List of Solar System objects by size - wikipedia List of Solar System objects by size Solar System Objects by orbit by size by discovery date Lists Gravitationally - rounded ( equilibrium ) objects Possible dwarf planets Moons ( natural satellites ) Minor planets Comets Asteroids Solar System portal Star portal This is a partial list of Solar System objects by size, arranged in descending order of mean volumetric radius, and subdivided into several size classes. These lists can also be sorted according to an object 's mass and, for the largest objects, volume, density and surface gravity, insofar as these values are available. This list contains the Sun, the planets, dwarf planets, many of the larger small Solar System bodies ( which includes the asteroids ), all named natural satellites, and a number of smaller objects of historical or scientific interest, such as comets and near - Earth objects. The ordering may be different depending on whether one chooses radius or mass, because some objects are denser than others. For instance, Uranus is larger than Neptune but less massive, and although Ganymede and Titan are larger than Mercury, they have less than half Mercury 's mass. This means some objects in the lower tables, despite their smaller radii, may be more massive than objects in the upper tables because they have a higher density. Many trans - Neptunian objects ( TNOs ) have been discovered, and their approximate locations in this list are shown, even though there can be a large uncertainty in their measurement. Solar System objects more massive than 10 kilograms ( one yottagram ( Yg ) ) are known or expected to be approximately spherical. Astronomical bodies relax into rounded shapes ( ellipsoids ), achieving hydrostatic equilibrium, when the gravity of their mass is sufficient to overcome the structural strength of their material. Objects made of ice become round more easily than those made of rock, and many icy objects are spheroidal at far lower sizes. The cutoff boundary for roundness is somewhere between 100 km and 200 km in radius. The larger objects in the mass range between 10 kg to 10 kg ( 1 to 1000 zettagrams ( Zg ) ), such as Tethys, Ceres, and Mimas, have relaxed to an oblate - spheroid equilibrium due to their gravity, whereas the less massive rubble piles ( e.g. Amalthea and Janus ) are roughly rounded, but not spherical, dubbed `` irregular ''. Spheroidal bodies typically have some polar flattening due to the centrifugal force from their rotation, and can sometimes even have quite different equatorial diameters ( scalene ellipsoids such as Haumea ). Unlike bodies such as Haumea, the irregular bodies deviate significantly from the shape of an ellipsoid. There can be difficulty in determining the diameter ( within a factor of about 2 ) for typical objects beyond Saturn. ( See 2060 Chiron as an example. ) For TNOs there is some confidence in the diameters, but for non-binary TNOs there is no real confidence in the masses / densities. Many TNOs are often just assumed to have Pluto 's density of 2.0 g / cm, but it is just as likely that they have a comet - like density of only 0.5 g / cm. For example, if a TNO is poorly assumed to have a mass of 3.59 × 10 kg based on a radius of 350 km with a density of 2 g / cm and is later discovered to only have a radius of 175 km with a density of 1 g / cm, the mass estimate would be only 2.24 × 10 kg. The sizes and masses of many of the moons of Jupiter and Saturn are fairly well known due to numerous observations and interactions of the Galileo and Cassini orbiters. But many of the moons with a radius less than ~ 100 km, such as Jupiter 's Himalia, still have unknown masses. Again, as we get further from the Sun than Saturn, things get less clear. There has not yet been an orbiter around Uranus or Neptune for long - term study of their moons. For the small outer irregular moons of Uranus, such as Sycorax, which were not discovered by the Voyager 2 flyby, even different NASA web pages, such as the National Space Science Data Center and JPL Solar System Dynamics, have somewhat contradictory size and albedo estimates depending on which research paper is being cited. Data for objects has varying reliability including uncertainties in the figures for mass and radius, and irregularities in the shape and density, with accuracy often depending on how close it is to Earth or whether it has been visited by a probe. Contents 1 Graphical overview 2 List of objects by radius 2.1 Larger than 400 km 2.2 From 200 to 400 km 2.3 From 100 to 200 km 2.4 From 50 to 100 km 2.5 From 20 to 50 km 2.6 From 1 to 20 km 2.7 Below 1 km 3 Surface gravity 4 Notes 5 References 6 Further reading 7 External links Graphical Overview Relative sizes of the fifty largest bodies in the Solar System, colored by orbital region. Values are diameters in kilometers. Relative masses of the bodies of the Solar System. Objects smaller than Saturn are not visible at this scale. Relative masses of the Solar planets. Jupiter at 71 % of the total and Saturn at 21 % dominate the system. Mercury is not visible at this scale. Relative masses of the solid bodies of the Solar System. Earth at 48 % and Venus at 39 % dominate. Bodies less massive than Pluto are not visible at this scale. Relative masses of the rounded moons of the Solar System. Mimas, Enceladus, and Miranda are too small to be visible at this scale. List of objects by radius Larger than 400 km It was once expected that any icy body larger than approximately 200 km in radius was likely to be in hydrostatic equilibrium ( HE ). However, Rhea is the smallest body where detailed measurements have been made and are consistent with hydrostatic equilibrium, whereas Iapetus is the largest determined not to be in hydrostatic equilibrium, bracketing a radius of 750 km. For simplicity and comparative purposes, the values are manually calculated assuming a sphericity of 1. The size of solid bodies does not include an object 's atmosphere. For example, Titan looks bigger than Ganymede, but its solid body is smaller. For the giant planets, the `` radius '' is the point at which the atmosphere reaches 1 bar of atmospheric pressure. The radius of Saturn 's main rings is 136,775 km. Body Image Radius Volume Mass Density Gravity Type Shape # ( km ) ( R ) ( 10 km ) ( V ) ( 10 kg ) ( M ) ( g / cm ) ( m / s ) ( ⊕ ) Sun 7005696342000000000 ♠ 696 342 ± 65 109.3 1,414,300,000 1,305,700 1,988,550,000 333,000 1.408 274.0 27.94 star round ( HE ) Jupiter 7004699110000000000 ♠ 69 911 ± 6 10.97 1,431,280 1,321 1,898,600 317.83 1.326 24.79 2.528 planet ( gas giant ) ; has rings round ( HE ) Saturn 7004582320000000000 ♠ 58 232 ± 6 ( w / o rings ) 9.140 827,130 764 568,460 95.162 0.687 10.445 1.065 planet ( gas giant ) ; has rings round ( HE ) Uranus 7004253620000000000 ♠ 25 362 ± 7 3.981 68,340 63.1 86,832 14.536 1.27 8.69 0.90 planet ( ice giant ) ; has rings round ( HE ) Neptune 7004246220000000000 ♠ 24 622 ± 19 3.865 62,540 57.7 102,430 17.147 1.638 11.15 1.137 planet ( ice giant ) ; has rings round ( HE ) 5 Earth 7003637100000000000 ♠ 6371. 0 ± 0.01 1,083.21 5,973.6 5.514 9.80665 planet ( terrestrial ) round ( HE ) 6 Venus 7003605180000000000 ♠ 6051. 8 ± 1.0 ( w / o gas ) 0.9499 928.43 0.857 4,868.5 0.815 5.243 8.872 0.905 planet ( terrestrial ) round ( HE ) 7 Mars 7003338950000000000 ♠ 3389. 5 ± 0.2 0.5320 163.18 0.151 641.85 0.107 3.9335 ± 0.0004 3.7 0.38 planet ( terrestrial ) round ( HE ) 8 Ganymede Jupiter III 7003263410000000000 ♠ 2634. 1 ± 0.3 0.4135 76.30 0.0704 148.2 0.0248 1.936 1.428 0.15 moon of Jupiter round ( HE ) 9 Titan Saturn VI 7003257600000000000 ♠ 2576 ± 2 ( w / o gas ) 0.4043 71.52 0.0660 134.5 0.0225 1.8798 ± 0.0044 1.354 0.14 moon of Saturn round ( HE ) 10 Mercury 7003243969999999999 ♠ 2439. 7 ± 1.0 0.3829 60.83 0.0562 330.2 0.0553 5.427 3.7 0.38 planet ( terrestrial ) round ( HE ) 11 Callisto Jupiter IV 7003241030000000000 ♠ 2410. 3 ± 1.5 0.3783 58.65 0.0541 107.6 0.018 1.8344 ± 0.0034 1.23603 0.126 moon of Jupiter round ( HE ) 12 Io Jupiter I 7003182160000000000 ♠ 1821. 6 ± 0.5 0.2859 25.32 0.0234 89.3 0.015 3.528 ± 0.006 1.797 0.183 moon of Jupiter round ( HE ) 13 Moon Earth I 7003173710000000000 ♠ 1737. 1 0.2727 21.958 0.0203 73.5 0.0123 3.3464 1.625 0.166 moon of Earth round ( HE ) 14 Europa Jupiter II 7003156080000000000 ♠ 1560. 8 ± 0.5 0.2450 15.93 0.0147 48 0.008035 3.013 ± 0.005 1.316 0.134 moon of Jupiter round ( HE ) 15 Triton Neptune I 7003135340000000000 ♠ 1353. 4 ± 0.9 0.2124 10.38 0.0096 21.5 0.003599 2.061 0.782 0.0797 moon of Neptune round ( HE ) 16 Pluto 134340 7003118600000000000 ♠ 1186 ± 2 0.186 6.95 0.0064 13.105 0.0022 1.87 ± 0.02 0.61 0.062 dwarf planet ; plutino ; multiple round ( HE ) 17 Eris 136199 7003116300000000000 ♠ 1163 ± 6 0.1825 6.59 0.006 16.7 0.0028 2.52 ± 0.05 0.659 0.0672 dwarf planet ; SDO ; binary round ( HE ) 18 Titania Uranus III 7002788400000000000 ♠ 788.4 ± 0.6 0.1237 2.06 0.0019 3.526 0.00059 1.711 ± 0.005 0.378 0.0385 moon of Uranus round 19 2007 OR 225088 7002767000000000000 ♠ 767 + 38 − 113 0.1200 1.88 0.0017 resonant KBO ( 3 : 10 ) unknown 20 Rhea Saturn V 7002763800000000000 ♠ 763.8 ± 1.0 0.1199 1.87 0.0017 2.3166 0.00039 1.236 ± 0.005 0.26 0.027 moon of Saturn round ( HE, disputed ) 21 Oberon Uranus IV 7002761400000000000 ♠ 761.4 ± 2.6 0.1195 1.85 0.0017 3.014 0.0005 1.63 ± 0.05 0.347 0.035 moon of Uranus round 22 Iapetus Saturn VIII 7002734500000000000 ♠ 734.5 ± 2.8 0.1153 1.55 0.0014 1.9739 0.00033 1.088 ± 0.013 0.223 0.0227 moon of Saturn round ( not in HE ) 23 Makemake 136472 7002715000000000000 ♠ 715 + 19 − 11 0.112 1.7. 0016 2.3 ± 0.9 dwarf planet ; cubewano round 24 Haumea 136108 7002620000000000000 ♠ 620 + 34 − 29 0.097 1.3 -- 1.6 0.001 4.006 0.00067 2.55 0.44 0.045 dwarf planet ; resonant KBO ( 7 : 12 ) ; trinary round ( scalene ellipsoid ) 25 Charon Pluto I 7002606000000000000 ♠ 606 ± 3 0.0951 0.87 0.0008 1.52 0.00025 1.702 ± 0.021 0.279 0.028 moon of Pluto round 26 Umbriel Uranus II 7002584700000000000 ♠ 584.7 ± 2.8 0.0918 0.84 0.0008 1.2 0.00020 1.39 ± 0.16 0.234 0.024 moon of Uranus round 27 Ariel Uranus I 7002578900000000000 ♠ 578.9 ± 0.6 0.0909 0.81 0.0007 1.35 0.000226 1.66 ± 0.15 0.269 0.027 moon of Uranus round 28 Dione Saturn IV 7002561400000000000 ♠ 561.4 ± 0.4 0.0881 0.73 0.0007 1.096 0.000183 1.478 ± 0.003 0.232 0.0237 moon of Saturn round ( not in HE ) 29 Quaoar 50000 7002555000000000000 ♠ 555 ± 3 0.0871 1.4 ± 0.1 0.0002 2.2 ± 0.4 0.125 0.0127 cubewano ; binary unknown 30 Tethys Saturn III 7002531100000000000 ♠ 531.1 ± 0.6 0.0834 0.624 0.0006 0.6173 0.000103 0.984 ± 0.003 0.145 0.015 moon of Saturn round ( not in HE ) 31 Sedna 90377 7002500000000000000 ♠ 500 ± 80 0.0785 sednoid ; detached object unknown 32 Ceres 7002473000000000000 ♠ 473 0.0742 0.433 0.0004 0.939 0.000157 2.17 0.29 0.030 dwarf planet ; belt asteroid round ( HE ) 33 2002 MS 307261 7002467000000000000 ♠ 467 ± 24 0.0733 cubewano unknown 34 Orcus 90482 7002458000000000000 ♠ 458 ± 13 0.0719 2.47 plutino ; binary unknown 35 Salacia 120347 7002425000000000000 ♠ 425 ± 23 0.0667 0.45 ± ? 1.16 + 0.59 − 0.36 cubewano ; binary unknown 36 Notes : Name of body, including alternative names using Roman numerals to designate moons ( such as `` Jupiter I '' for Io ), and numbers to designate minor planets Mean radius including uncertainties Given as surface gravity ( 1 bar for gaseous planets ) Ranking by radius of the largest bodies in the Solar System, may not reflect the latest updates of measured radii star giant planet terrestrial planet the Moon, moon of Earth moon of Jupiter moon of Saturn moon of Uranus moon of Neptune moon of Pluto From 200 to 400 km All imaged icy moons except Proteus with radii greater than 200 km are round, although those under 400 km that have had their shapes carefully measured are not in hydrostatic equilibrium. Most asteroids are rockier and less likely to be round ; for example, 10 Hygiea is not, while 2 Pallas and 4 Vesta are borderline. Body Image Radius ( km ) Mass ( 10 kg ) Density ( g / cm ) Type Remarks -- shape Refs r M 2013 FY 27 265 -- 550 -- -- SDO large range of estimated diameters r M 2002 AW 55565 7002384000000000000 ♠ 384 + 20 − 18 -- -- other TNO, detached object -- 2003 AZ 208996 7002385000000000000 ♠ 385 -- -- plutino ; binary -- r M V774104 7002375000000000000 ♠ ~ 375 - - -- - Varda 174567 7002358000000000000 ♠ 358 7000265000000000000 ♠ 2.65 7000125000000000000 ♠ 1.25 cubewano ; binary -- 2015 RR 245 7002350000000000000 ♠ ~ 350 - - resonant KBO ( 2 : 9 ) -- - Dysnomia Eris I 7002342000000000000 ♠ 342 ± 25 -- -- moon of Eris large range of estimated diameters 100 -- 660 km M 2004 GV 90568 7002340000000000000 ♠ 340 ± 40 -- -- cubewano -- r M 2005 RN 145452 7002340000000000000 ♠ 340 ± 40 -- -- cubewano -- r M 2002 UX 55637 7002335000000000000 ♠ 335 ± 17 7000125000000000000 ♠ 1.25 6999820000000000000 ♠ 0.82 cubewano ; binary -- 2007 JJ 278361 7002335000000000000 ♠ 335 ± 150 -- -- cubewano -- r M Varuna 20000 7002334000000000000 ♠ 334 + 77 − 43 7000370000000000000 ♠ 3.7 6999990000000000000 ♠ 0.99 cubewano -- M Ixion 28978 7002325000000000000 ♠ 325 + 130 − 110 -- -- plutino -- r M 2007 UK 229762 7002300000000000000 ♠ 300 ± 40 -- -- SDO -- r M Chaos 19521 7002300000000000000 ♠ 300 ± 70 -- -- cubewano -- r M 2010 KZ 39 7002300000000000000 ♠ ~ 300 -- -- cubewano -- r M 2012 VP 113 7002300000000000000 ♠ ~ 300 -- -- sednoid -- r M 2010 RF 43 7002300000000000000 ♠ ~ 300 -- -- SDO -- r M 2005 RM 145451 7002300000000000000 ♠ ~ 300 -- -- SDO -- r M 2001 UR 42301 7002300000000000000 ♠ ~ 300 -- -- SDO -- r M 2002 TC 84522 7002290000000000000 ♠ 290 ± 50 -- -- resonant KBO ( 2 : 5 ) -- r M 2002 XV 93 7002280000000000000 ♠ 280 ± 10 -- -- plutino -- r M 2003 UZ 455502 7002280000000000000 ♠ ~ 280 -- -- plutino -- r M 2008 ST 291 7002318000000000000 ♠ ~ 318 -- -- SDO -- r M 2010 RE 64 7002280000000000000 ♠ ~ 280 -- -- SDO -- r M 2010 FX 86 7002280000000000000 ♠ ~ 280 -- -- cubewano -- r M 2006 QH 181 7002280000000000000 ♠ ~ 280 -- -- SDO -- r M 2014 UM 472271 7002270000000000000 ♠ ~ 270 -- -- cubewano -- r M 2004 XR 190 7002270000000000000 ♠ ~ 270 -- -- SDO -- r M Vesta 7002262700000000000 ♠ 262.7 ± 0.1 7000259000000000000 ♠ 2.59 7000346000000000000 ♠ 3.46 belt asteroid formerly round ( not in hydrostatic equilibrium : frozen - in ellipsoidal shape and large impact basins ) 2003 VS 84922 7002260000000000000 ♠ 260 ± 20 -- -- plutino -- r M 2004 TY 120348 7002260000000000000 ♠ ~ 260 -- -- cubewano -- r M 2010 VK 201 7002260000000000000 ♠ ~ 260 -- -- cubewano -- r M Pallas 7002256000000000000 ♠ 256 ± 3 7000211000000000000 ♠ 2.11 ± 0.26 7000300000000000000 ♠ 3.0 ± 0.5 belt asteroid uncertain Enceladus Saturn II 7002252100000000000 ♠ 252.1 ± 0.2 7000108000000000000 ♠ 1.08 7000161000000000000 ♠ 1.61 moon of Saturn round ( not in hydrostatic equilibrium : frozen - in ellipsoidal shape ) r M 2005 UQ 202421 7002250000000000000 ♠ 250 ± 40 -- -- cubewano -- r M 2003 QX 113 7002250000000000000 ♠ ~ 250 -- -- SDO -- r M 2014 FC 69 7002250000000000000 ♠ ~ 250 -- -- -- -- r M 2002 WC 119979 7002245000000000000 ♠ 245 -- -- twotino ; binary -- r M 2010 EK 471143 7002240000000000000 ♠ 240 ± 70 -- -- SDO -- r M Miranda Uranus V 7002235800000000000 ♠ 235.8 ± 0.7 6999660000000000000 ♠ 0.66 7000120000000000000 ♠ 1.2 moon of Uranus round r M 2005 TB 145480 7002230000000000000 ♠ 230 ± 30 -- -- detached object -- r M 1999 DE 26375 7002230000000000000 ♠ 230 ± 20 -- -- resonant KBO ( 2 : 5 ) -- r M 2003 FY 120132 7002230000000000000 ♠ 230 ± 10 -- -- SDO -- r M Huya 38628 7002229000000000000 ♠ 229 ± 5 -- -- plutino -- r M 2002 VR 84719 7002220000000000000 ♠ 220 ± 20 -- -- plutino -- r M 2010 TJ 7002220000000000000 ♠ ~ 220 -- -- SDO -- r M 2010 VZ 445473 7002220000000000000 ♠ ~ 220 -- -- SDO -- r M 2011 FW 62 7002220000000000000 ♠ ~ 220 -- -- other TNO -- r M Hygiea 10 7002215000000000000 ♠ 215 ± 4 -- -- belt asteroid irregular r M Proteus Neptune VIII 7002210000000000000 ♠ 210 ± 7 6999440000000000000 ♠ 0.44 7000130000000000000 ♠ ~ 1.3 moon of Neptune irregular r M 2005 QU 303775 7002210000000000000 ♠ 210 ± 40 -- -- SDO -- r M 2004 NT 444030 7002210000000000000 ♠ 210 ± 40 -- -- cubewano -- r M 1999 CD 469306 7002210000000000000 ♠ ~ 210 -- -- resonant KBO ( 4 : 7 ) -- r M 2004 PF 175113 7002203000000000000 ♠ 203 ± 43 -- -- plutino -- r M 2011 GM 471288 7002201000000000000 ♠ ~ 201 -- -- cubewano -- r M 1998 SN 35671 7002200000000000000 ♠ 200 ± 20 -- -- cubewano -- r M 2001 QF 469372 7002200000000000000 ♠ 200 ± 20 -- -- plutino -- r M 2000 YW 82075 7002200000000000000 ♠ ~ 200 -- -- SDO -- r M 1996 GQ 26181 7002200000000000000 ♠ ~ 200 -- -- SDO -- r M Notes : Name of body, including alternative names using Roman numerals to designate moons ( such as `` Saturn II '' for Enceladus ), and numbers to designate minor planets Mean radius including uncertainties Figures from default source Johnston 's Archive -- List of Known Trans - Neptunian Objects, if otherwise not mentioned in References Legend : belt asteroid moon of Saturn moon of Uranus moon of Neptune Dysnomia, moon of Eris SDO -- scattered disc object cubewano -- classical Kuiper belt object plutino - trans - Neptunian object in Pluto - like orbit From 100 to 200 km This list contains a selection of objects estimated to be between 100 and 200 km in radius ( 200 and 400 km in diameter ). The largest of these may lie above the boundary for hydrostatic equilibrium, but most are irregular. Most of the trans - Neptunian objects listed with a radius smaller than 200 km have `` assumed sizes based on a generic albedo of 0.09 '' since they are too far away to directly measure their sizes with existing instruments. Mass switches from 10 kg to 10 kg ( Zg ). Main - belt asteroids have orbital elements constrained by ( 2.0 AU < a < 3.2 AU ; q > 1.666 AU ) according to JPL Solar System Dynamics ( JPLSSD ). This list is not complete, missing many poorly known TNOs. Body Image Radius ( km ) Mass ( 10 kg ) Type Remarks -- shape Refs r M Mimas Saturn I 7002198200000000000 ♠ 198.2 ± 0.4 7001374900000000000 ♠ 37.49 ± 0.03 satellite of Saturn round ( smallest known body currently known to have an ellipsoidal shape, but not in hydrostatic equilibrium ) r M Vanth Orcus I 7002190000000000000 ♠ 190 ± 50 satellite of Orcus -- M 2010 TY 53 7002183000000000000 ♠ ~ 183 extended centaur -- r M Ilmarë Varda I 7002180000000000000 ♠ 180 ± 20 satellite of Varda -- r M 1996 TL 15874 7002170000000000000 ♠ 170 ± 10 SDO -- r M Nereid Neptune II 7002170000000000000 ♠ 170 ± 30 satellite of Neptune -- r M 2004 XA 230965 7002170000000000000 ♠ 170 ± 60 SDO -- r M 2001 FP 82158 7002166000000000000 ♠ 166 ± 28 SDO -- r M Interamnia 704 7002163000000000000 ♠ 163 ± 1 7001370000000000000 ♠ 37 belt asteroid ( F ) irregular shape r M Hiʻiaka Haumea I 7002160000000000000 ♠ 160 7001200000000000000 ♠ 20 satellite of Haumea -- M S / ( 225088 ) 1 2007 OR10 I 7002160000000000000 ♠ ~ 160 satellite of 2007 OR10 -- r M 2002 KX 119951 7002159000000000000 ♠ 159 cubewano -- r M Europa 52 7002158000000000000 ♠ 158 ± 4 7001165000000000000 ♠ 16.5 belt asteroid ( C ) irregular shape r M 1995 SN 55 7002150000000000000 ♠ ~ 150 Lost -- centaur or transient TNO -- r M Davida 511 7002145000000000000 ♠ 145 ± 10 7001438000000000000 ♠ 43.8 belt asteroid ( C ) irregular shape r M Sylvia 87 7002143000000000000 ♠ 143 ± 5 7001147800000000000 ♠ 14.78 belt asteroid ( outer ) ( X ) ; trinary irregular shape r M Actaea Salacia I 7002140000000000000 ♠ 140 ± 10 satellite of 120347 Salacia -- r M Cybele 65 7002136000000000000 ♠ 136 ± 6 7001178000000000000 ♠ 17.8 belt asteroid ( outer ) ( C ) irregular shape r M Juno 7002136000000000000 ♠ 136 ± 11 7001267000000000000 ♠ 26.7 belt asteroid ( S ) irregular shape M Hyperion Saturn VII 7002135000000000000 ♠ 135 ± 4 7000558000000000000 ♠ 5.58 satellite of Saturn irregular shape r M Eunomia 15 7002134000000000000 ♠ 134 ± 7 31.2 belt asteroid ( S ) irregular shape r M Camilla 107 7002129000000000000 ♠ 129 ± 7 11.2 belt asteroid ( outer ) ( C ) ; binary irregular shape r M Euphrosyne 31 7002128000000000000 ♠ 128 ± 3 6.23 belt asteroid ( C ) irregular shape r M Psyche 16 7002127000000000000 ♠ 127 ± 2 21.9 belt asteroid ( M ) irregular shape r M 2005 RR 145453 7002126000000000000 ♠ 126 cubewano ; Haumea family -- M Sila 79360 7002125000000000000 ♠ 125 + 15 − 16 11 cubewano ; binary w / Nunam double classical Kuiper belt object 79360 Sila -- Nunam M Chariklo 10199 7002124000000000000 ♠ 124 ± 9 centaur has rings r M 2007 RW 309239 7002124000000000000 ♠ 124 ± 15 TNO -- quasi-satellite of Neptune -- r M Nunam 79360 7002118000000000000 ♠ 118 + 14 − 15 cubewano ; binary w / Sila double classical Kuiper belt object 79360 Sila -- Nunam M Bamberga 324 7002117000000000000 ♠ 117 ± 4 10 belt asteroid ( C ) r M Patientia 451 7002117000000000000 ♠ 117 ± 5 belt asteroid irregular shape r M 2001 QC 298 7002117000000000000 ♠ 117 + 11 − 12 7001118800000000000 ♠ 11.88 ± 0.14 hot classical ; binary -- M Chiron 2060 or 95P / Chiron 7002116000000000000 ♠ 116 ± 7 centaur has rings r M Thisbe 88 7002113000000000000 ♠ 113 ± 6 10.5 belt asteroid ( B ) irregular shape r M Hektor 624 7002113000000000000 ♠ 113 ± 8 10 Jupiter trojan ( L ) ; binary irregular shape r M Ceto 65489 7002112000000000000 ♠ 112 ± 10 5.4 extended centaur ; binary -- r Herculina 532 7002111000000000000 ♠ 111 ± 2 belt asteroid ( S ) irregular shape r M Doris 48 7002111000000000000 ♠ 111 ± 4 belt asteroid irregular shape r M Eugenia 45 7002107000000000000 ♠ 107 ± 2 5.69 belt asteroid ( F ) ; trinary irregular shape r M Phoebe Saturn IX 7002106500000000000 ♠ 106.5 ± 0.7 7000828999999999999 ♠ 8.29 ± 0.01 satellite of Saturn formerly round r M Amphitrite 29 7002106000000000000 ♠ 106 ± 3 11.8 belt asteroid ( S ) irregular shape r M Bienor 54598 7002105000000000000 ♠ 105 ± 15 centaur -- r M Deucalion 53311 7002105000000000000 ♠ ~ 105 cubewano -- r M Diotima 423 7002104000000000000 ♠ 104 ± 3 belt asteroid ( C ) irregular shape r M Egeria 13 7002104000000000000 ♠ 104 ± 4 16.3 belt asteroid ( G ) irregular shape r M Fortuna 19 7002104000000000000 ♠ 104 ± 6 12.7 belt asteroid ( G ) irregular shape r M Aurora 94 7002102000000000000 ♠ 102 ± 2 belt asteroid irregular shape r M Iris 7 7002100000000000000 ♠ 100 ± 5 13.6 belt asteroid ( S ) irregular shape r M Daphne 41 7002100000000000000 ♠ 100 ± 5 belt asteroid irregular shape r M Themis 24 7002100000000000000 ♠ 100 ± 10 11.3 belt asteroid ( C ) ; Themis family -- r M Notes : Name of body, including alternative names using Roman numerals to designate moons ( such as `` Saturn I '' for Mimas ), and numbers to designate minor planets Mean radius including uncertainties Reference column specifically for radius ( r ) and mass ( M ) citations Legend : Jupiter trojan moon of Saturn moon of Neptune moon of Haumea belt asteroid -- types : B C F G M S X From 50 to 100 km This list contains a selection of objects 50 and 100 km in radius ( 100 km to 200 km in average diameter ). The listed objects currently include most objects in the asteroid belt and moons of the giant planets in this size range, but many newly discovered objects in the outer Solar System are missing, such as those included in the following reference. Asteroid spectral types are mostly Tholen, but some might be SMASS. Body Image Radius ( km ) Mass ( 10 kg ) Type -- remarks Alauda 702 7001970000000000000 ♠ 97 ± 2 7000605000000000000 ♠ 6.05 belt asteroid ( C ) ; binary Larissa Neptune VII 7001970000000000000 ♠ 97 ± 3 moon of Neptune Ursula 375 7001960000000000000 ♠ 96 ± 2 belt asteroid 2001 QC 298 I 7001960000000000000 ♠ 96 + 9 − 10 satellite of 2001 QC Hermione 121 7001950000000000000 ♠ 95 7000538000000000000 ♠ 5.38 outer belt asteroid ( C ) ; binary Palma 372 7001960000000000000 ♠ 96 ± 2 belt asteroid Metis 9 7001950000000000000 ♠ 95 7001113000000000000 ♠ 11.3 belt asteroid Nemesis 128 7001920000000000000 ♠ 92 ± 3 7000700000000000000 ♠ 7 belt asteroid ( C ) Hebe 6 7001930000000000000 ♠ 93 7001128000000000000 ♠ 12.8 belt asteroid ( S ) Pholus 5145 7001920000000000000 ♠ 92 ± 8 7000660000000000000 ♠ 6.6 centaur Bertha 154 7001930000000000000 ♠ 93 ± 1 belt asteroid ( C ) Freia 76 7001920000000000000 ♠ 92 ± 2 7000650000000000000 ♠ 6.5 outer belt asteroid ; Cybele Elektra 130 7001910000000000000 ♠ 91 ± 6 7000660000000000000 ♠ 6.6 belt asteroid ( G ) ; binary Rhadamanthus 38083 7002100500000000000 ♠ 100.5 1999 HX ; plutino ? Janus Saturn X 7001895000000000000 ♠ 89.5 ± 1.4 7000191200000000000 ♠ 1.912 moon of Saturn Aletheia 259 7001950000000000000 ♠ 95 ± 3 7000597000000000000 ♠ 5.97 belt asteroid Galatea Neptune VI 7001880000000000000 ♠ 88 ± 4 7000212000000000000 ♠ 2.12 moon of Neptune Teharonhiawako 88611 7001890000000000000 ♠ 89 + 16 − 18 trans - Neptunian object ; cubewano ; primary of Sawiskera Typhon 42355 7001810000000000000 ♠ 81 ± 4 trans - Neptunian object ; binary Lachesis 120 7001870000000000000 ♠ 87 7000550000000000000 ♠ 5.5 belt asteroid Winchester 747 7001850000000000000 ♠ 85 ± 3 belt asteroid Hilda 153 7001850000000000000 ♠ 85 7000520000000000000 ♠ 5.2 belt asteroid ; Hildas Namaka Haumea II 7001850000000000000 ♠ ~ 85 7000200000000000000 ♠ 2 moon of Haumea Puck Uranus XV 7001810000000000000 ♠ 81 ± 2 moon of Uranus Aegle 96 7001840000000000000 ♠ 84 ± 3 7000509999999999999 ♠ 5.1 belt asteroid Germania 241 7001890000000000000 ♠ 89 ± 4 7000505000000000000 ♠ 5.05 belt asteroid ( C ) Prokne 194 7001850000000000000 ♠ 85 ± 3 7000500000000000000 ♠ 5 belt asteroid ( C ) Stereoskopia 566 7001840000000000000 ♠ 84 outer belt asteroid ; Cybele Amalthea Jupiter V 7001840000000000000 ♠ 84 ± 2 7000208000000000000 ♠ 2.08 ± 0.15 moon of Jupiter Agamemnon 911 7001830000000000000 ♠ 83 Jupiter trojan Kalliope 22 7001900000000000000 ♠ 90 ± 2 7000809000000000000 ♠ 8.09 belt asteroid ( M ) ; binary Borasisi 66652 7001815000000000000 ♠ 81.5 + 16 − 33 trans - Neptunian object ; cubewano ; binary Siegena 386 7001850000000000000 ♠ 85 ± 4 belt asteroid ( C ) Elpis 59 7001820000000000000 ♠ 82 ± 3 belt asteroid Diomedes 1437 7001820000000000000 ♠ 82 ± 2 7000459999999999999 ♠ 4.6 Jupiter trojan Gyptis 444 7001820000000000000 ♠ 82 ± 5 7001125000000000000 ♠ 12.5 belt asteroid ( C ) Aspasia 409 7001880000000000000 ♠ 88 ± 2 7000442000000000000 ♠ 4.42 belt asteroid ( C ) Dido 209 7001700000000000000 ♠ 70 ± 5 7000428000000000000 ♠ 4.28 belt asteroid ( C ) Chicago 334 7001840000000000000 ♠ 84 ± 4 belt asteroid ( C ) Hispania 804 7001740000000000000 ♠ 74 ± 2 7000994999999999999 ♠ 9.95 belt asteroid ( P ) Eunike 185 7001800000000000000 ♠ 80 ± 3 7000409000000000000 ♠ 4.09 belt asteroid Juewa 139 7001810000000000000 ♠ 81 ± 4 7000400000000000000 ♠ 4 belt asteroid S / 2015 ( 136472 ) 1 Makemake I 7001800000000000000 ♠ 80 moon of Makemake Io 85 7001800000000000000 ♠ 80 7000340000000000000 ♠ 3.4 belt asteroid Loreley 165 7001820000000000000 ♠ 82 ± 4 7000391000000000000 ♠ 3.91 belt asteroid ( C ) Pretoria 790 7001804900000000000 ♠ 80.49 outer belt asteroid ; Cybele Ino 173 7001800000000000000 ♠ 80 ± 3 belt asteroid ( C ) Altjira 148780 7002123000000000000 ♠ 123 + 19 − 70 trans - Neptunian object ; cubewano ; binary ; secondary S / 2007 ( 148780 ) 1 Eleonora 354 7001770000000000000 ♠ 77 ± 3 belt asteroid ( S ) Laetitia 39 7001769000000000000 ♠ 76.9 7000350000000000000 ♠ 3.5 belt asteroid Irene 14 7001760000000000000 ♠ 76 7000819999999999999 ♠ 8.2 belt asteroid Julia 89 7001740000000000000 ♠ 74 ± 4 7000360000000000000 ♠ 3.6 belt asteroid ( S ) Merapi 536 7001760000000000000 ♠ 76 ± 2 belt asteroid Berbericia 776 7001760000000000000 ♠ 76 ± 2 belt asteroid Adeona 145 7001750000000000000 ♠ 75 ± 3 7000360000000000000 ♠ 3.6 belt asteroid ; Adena Nuwa 150 7001730000000000000 ♠ 73 ± 5 7000362000000000000 ♠ 3.62 belt asteroid ( C ) Despina Neptune V 7001750000000000000 ♠ 75 ± 3 moon of Neptune Sycorax Uranus XVII 7001750000000000000 ♠ ~ 75 7000229999999999999 ♠ 2.3 moon of Uranus Manwë 385446 7001750000000000000 ♠ ~ 75 resonant KBO ( 4 : 7 ) Pales 49 7001749000000000000 ♠ 74.9 7000269000000000000 ♠ 2.69 belt asteroid ( C ) S / 2007 ( 148780 ) 1 Altjira I 7002111000000000000 ♠ 111 + 17 − 63 trans - Neptunian object ; cubewano ; binary Secondary of 148780 Altjira Lomia 117 7001700000000000000 ♠ ~ 70 7000340000000000000 ♠ 3.4 belt asteroid ( C ) Hypatia 238 7001700000000000000 ♠ ~ 70 belt asteroid ( C ) Sibylla 168 7001700000000000000 ♠ ~ 70 7000342000000000000 ♠ 3.42 belt asteroid ( C ) Emma 283 7001700000000000000 ♠ ~ 70 7000137999999999999 ♠ 1.38 belt asteroid ; binary Nemausa 51 7001700000000000000 ♠ ~ 70 belt asteroid Dione 106 7001700000000000000 ♠ ~ 70 belt asteroid ( G ) Meliboea 137 7001700000000000000 ♠ ~ 70 7000320000000000000 ♠ 3.2 belt asteroid Massalia 20 7001700000000000000 ♠ ~ 70 7000567000000000000 ♠ 5.67 belt asteroid Isolda 211 7001700000000000000 ♠ ~ 70 7000307000000000000 ♠ 3.07 belt asteroid ( C ) Äneas 1172 7001700000000000000 ♠ ~ 70 Jupiter trojan Vibilia 144 7001700000000000000 ♠ ~ 70 7000300000000000000 ♠ 3 belt asteroid Princetonia 508 7001700000000000000 ♠ ~ 70 belt asteroid Helio 895 7001700000000000000 ♠ ~ 70 belt asteroid ( B ) Bononia 361 7001700000000000000 ♠ ~ 70 belt asteroid ( D ) Bertholda 420 7001700000000000000 ♠ ~ 70 belt asteroid ( P ) Minerva 93 7001700000000000000 ♠ ~ 70 7000290000000000000 ♠ 2.9 belt asteroid ( C ) ; trinary Patroclus 617 7001700000000000000 ♠ ~ 70 Jupiter trojan ; binary Polyxo 308 7001700000000000000 ♠ ~ 70 belt asteroid ( T ) Melpomene 18 7001700000000000000 ♠ ~ 70 7000300000000000000 ♠ 3 belt asteroid Adorea 268 7001700000000000000 ♠ ~ 70 belt asteroid Dembowska 349 7001700000000000000 ♠ ~ 70 belt asteroid ( R ) Comacina 489 7001700000000000000 ♠ ~ 70 belt asteroid Hesperia 69 7001700000000000000 ♠ ~ 70 7000275999999999999 ♠ 2.76 belt asteroid ( M ) Alexandra 54 7001700000000000000 ♠ ~ 70 belt asteroid Pulcova 762 7001700000000000000 ♠ ~ 70 belt asteroid ( C ) ; binary Pabu Borasisi I 7001700000000000000 ♠ ~ 70 Secondary of 66652 Borasisi Philomela 196 7001700000000000000 ♠ ~ 70 belt asteroid ( S ) Medea 212 7001700000000000000 ♠ ~ 70 7000264000000000000 ♠ 2.64 belt asteroid Arethusa 95 7001700000000000000 ♠ ~ 70 7000260000000000000 ♠ 2.6 belt asteroid Portia Uranus XII 7001680000000000000 ♠ 68 ± 4 7000170000000000000 ♠ 1.7 moon of Uranus Achilles 588 7001700000000000000 ♠ ~ 70 Jupiter trojan Wratislavia 690 7001700000000000000 ♠ ~ 70 belt asteroid Ate 111 7001700000000000000 ♠ ~ 70 belt asteroid ( C ) Eukrate 247 7001700000000000000 ♠ ~ 70 belt asteroid ( C ) Erminia 705 7001700000000000000 ♠ ~ 70 belt asteroid Papagena 471 7001700000000000000 ♠ ~ 70 belt asteroid ( C ) Phorcys < Ceto I 7001860000000000000 ♠ 86 ± 5 7000167000000000000 ♠ 1.67 Satellite of 65489 Ceto Protogeneia 147 7001700000000000000 ♠ ~ 70 7000250000000000000 ♠ 2.5 belt asteroid Menoetius Patroclus I 7001700000000000000 ♠ ~ 70 Secondary of 617 Patroclus Desiderata 344 7001700000000000000 ♠ ~ 70 belt asteroid ( C ) Lucina 146 7001700000000000000 ♠ ~ 70 7000240000000000000 ♠ 2.4 belt asteroid Lumen 141 7001700000000000000 ♠ ~ 70 7000160000000000000 ♠ 1.6 belt asteroid ( C ) Liguria 356 7001700000000000000 ♠ ~ 70 belt asteroid Parthenope 11 7001700000000000000 ♠ ~ 70 7000615000000000000 ♠ 6.15 belt asteroid Lamberta 187 7001700000000000000 ♠ ~ 70 7000237000000000000 ♠ 2.37 belt asteroid ( C ) 1992 QB 15760 54 - 84 cubewano Himalia Jupiter VI 7001670000000000000 ♠ 67 ± 10 7000419000000000000 ♠ 4.19 moon of Jupiter -- Himalia group Aurelia 419 7001600000000000000 ♠ ~ 60 belt asteroid ( F ) Dynamene 200 7001600000000000000 ♠ ~ 60 belt asteroid Flora 8 7001600000000000000 ♠ ~ 60 7000847000000000000 ♠ 8.47 belt asteroid ( S ) ; Flora Boliviana 712 7001600000000000000 ♠ ~ 60 belt asteroid ( X ) Zelinda 654 7001600000000000000 ♠ ~ 60 belt asteroid Hippo 426 7001600000000000000 ♠ ~ 60 belt asteroid Aglaja 47 7001600000000000000 ♠ ~ 60 belt asteroid ( C ) Thule 279 7001600000000000000 ♠ ~ 60 belt asteroid ( D ) Undina 92 7001600000000000000 ♠ ~ 60 7000210000000000000 ♠ 2.1 belt asteroid ( M ) Anchises 1173 7001600000000000000 ♠ ~ 60 Jupiter trojan Odysseus 1143 7001600000000000000 ♠ ~ 60 Jupiter trojan ( L ) Argentina 469 7001600000000000000 ♠ ~ 60 belt asteroid ; Cybele Aemilia 159 7001600000000000000 ♠ ~ 60 7000139999999999999 ♠ 1.4 belt asteroid Thia 405 7001600000000000000 ♠ ~ 60 belt asteroid ( C ) Marianna 602 7001600000000000000 ♠ ~ 60 belt asteroid Hestia 46 7001600000000000000 ♠ ~ 60 7000350000000000000 ♠ 3.5 -- 21 belt asteroid Kleopatra 216 7001600000000000000 ♠ ~ 60 belt asteroid ( M ) ; trinary Klymene 104 7001600000000000000 ♠ ~ 60 7000200000000000000 ♠ 2 belt asteroid Chloris 410 7001600000000000000 ♠ ~ 60 belt asteroid ( C ) Sophrosyne 134 7001600000000000000 ♠ ~ 60 7000200000000000000 ♠ 2 belt asteroid Gudrun 328 7001600000000000000 ♠ ~ 60 7000194000000000000 ♠ 1.94 belt asteroid ( S ) Deiphobus 1867 7001600000000000000 ♠ ~ 60 Jupiter trojan Leto 68 7001600000000000000 ♠ ~ 60 belt asteroid ( S ) Panopaea 70 7001600000000000000 ♠ ~ 60 belt asteroid ( C ) Sawiskera Teharonhiawako I 7001650000000000000 ♠ 65 + 12 − 13 Secondary of 88611 Teharonhiawako Johanna 127 7001600000000000000 ♠ ~ 60 belt asteroid Adelheid 276 7001600000000000000 ♠ ~ 60 belt asteroid Iduna 176 7001600000000000000 ♠ ~ 60 belt asteroid ( G ) Xanthippe 156 7001600000000000000 ♠ ~ 60 belt asteroid ( S ) Bellona 28 7001600000000000000 ♠ ~ 60 belt asteroid ( C ) Semele 86 7001600000000000000 ♠ ~ 60 belt asteroid ( C ) Diana 78 7001600000000000000 ♠ ~ 60 belt asteroid ( C ) Myrrha 381 7001600000000000000 ♠ ~ 60 belt asteroid ( C ) Henrietta 225 7001600000000000000 ♠ ~ 60 7000183000000000000 ♠ 1.83 belt asteroid ( C ) ; Cybele Elfriede 618 7001600000000000000 ♠ ~ 60 belt asteroid ( C ) Artemis 105 7001600000000000000 ♠ ~ 60 7000180000000000000 ♠ 1.8 belt asteroid ( C ) Terpsichore 81 7001600000000000000 ♠ ~ 60 belt asteroid ( C ) Astraea 5 7001600000000000000 ♠ ~ 60 7000290000000000000 ♠ 2.9 belt asteroid Galatea 74 7001600000000000000 ♠ ~ 60 7000180000000000000 ♠ 1.8 belt asteroid ( C ) Ornamenta 350 7001600000000000000 ♠ ~ 60 belt asteroid ( C ) Tanete 772 7001600000000000000 ♠ ~ 60 belt asteroid ( C ) Hedwig 476 7001600000000000000 ♠ ~ 60 belt asteroid Freda 1093 7001600000000000000 ♠ ~ 60 belt asteroid Ophelia 171 7001600000000000000 ♠ ~ 60 belt asteroid ( C ) ; Themis Ulla 909 7001600000000000000 ♠ ~ 60 belt asteroid Paris 3317 7001600000000000000 ♠ ~ 60 Jupiter trojan Pompeja 203 7001600000000000000 ♠ ~ 60 belt asteroid Makhaon 3063 7001600000000000000 ♠ ~ 60 7000160000000000000 ♠ 1.6 Jupiter trojan 2006 SQ 308933 7001600000000000000 ♠ ~ 60 trans - Neptunian object Leda 38 7001600000000000000 ♠ ~ 60 7000160000000000000 ♠ 1.6 belt asteroid Carlova 360 7001600000000000000 ♠ ~ 60 belt asteroid Brixia 521 7001600000000000000 ♠ ~ 60 belt asteroid Veritas 490 7001600000000000000 ♠ ~ 60 belt asteroid ; Veritas family Tisiphone 466 7001600000000000000 ♠ ~ 60 belt asteroid ( C ) Kalypso 53 7001600000000000000 ♠ ~ 60 belt asteroid Alcathous 2241 7001600000000000000 ♠ ~ 60 Jupiter trojan Charybdis 388 7001600000000000000 ♠ ~ 60 belt asteroid ( C ) Circe 34 7001600000000000000 ♠ ~ 60 7000150000000000000 ♠ 1.5 belt asteroid ( C ) Epimetheus Saturn XI 7001580000000000000 ♠ 58 ± 2 6999530400000000000 ♠ 0.5304 moon of Saturn Scheila 596 7001600000000000000 ♠ ~ 60 belt asteroid Melete 56 7001600000000000000 ♠ ~ 60 7000150000000000000 ♠ 1.5 belt asteroid Antigone 129 7001600000000000000 ♠ ~ 60 7000200000000000000 ♠ 2 belt asteroid ; nickel -- iron Victoria 12 7001600000000000000 ♠ ~ 60 belt asteroid ( S ) Mnemosyne 57 7001600000000000000 ♠ ~ 60 belt asteroid Messalina 545 7001600000000000000 ♠ ~ 60 belt asteroid Teucer 2797 7001600000000000000 ♠ ~ 60 Jupiter trojan ( L ) Automedon 2920 7001600000000000000 ♠ ~ 60 Jupiter trojan ( L ) Aegina 91 7001500000000000000 ♠ ~ 50 7000139999999999999 ♠ 1.4 belt asteroid ( C ) Siwa 140 7001500000000000000 ♠ ~ 50 7000139999999999999 ♠ 1.4 belt asteroid Tauris 814 7001500000000000000 ♠ ~ 50 belt asteroid Polyxena 595 7001500000000000000 ♠ ~ 50 belt asteroid Athamantis 230 7001500000000000000 ♠ ~ 50 belt asteroid ( S ) Nestor 659 7001500000000000000 ♠ ~ 50 Jupiter trojan Fides 37 7001500000000000000 ♠ ~ 50 7000130000000000000 ♠ 1.3 belt asteroid ( S ) Armida 514 7001500000000000000 ♠ ~ 50 belt asteroid Thalia 23 7001500000000000000 ♠ ~ 50 7000130000000000000 ♠ 1.3 belt asteroid ( S ) Mandeville 739 7001500000000000000 ♠ ~ 50 belt asteroid ( X ) Harmonia 40 7001500000000000000 ♠ ~ 50 7000130000000000000 ♠ 1.3 belt asteroid ( S ) Eucharis 181 7001500000000000000 ♠ ~ 50 7000120000000000000 ♠ 1.2 belt asteroid ( K ) Hermentaria 346 7001500000000000000 ♠ ~ 50 belt asteroid ( S ) Ninina 357 7001500000000000000 ♠ ~ 50 belt asteroid Marion 506 7001500000000000000 ♠ ~ 50 belt asteroid ( C ) Corduba 365 7001500000000000000 ♠ ~ 50 belt asteroid ( C ) Atalante 36 7001500000000000000 ♠ ~ 50 belt asteroid Luscinia 713 7001500000000000000 ♠ ~ 50 belt asteroid ( C ) Rollandia 1269 7001500000000000000 ♠ ~ 50 belt asteroid Eva 164 7001500000000000000 ♠ ~ 50 belt asteroid ( C ) Ianthe 98 7001500000000000000 ♠ ~ 50 7000120000000000000 ♠ 1.2 belt asteroid ( C ) Vanadis 240 7001500000000000000 ♠ ~ 50 belt asteroid ( C ) Eos 221 7001500000000000000 ♠ ~ 50 belt asteroid ( K ) Hohensteina 788 7001500000000000000 ♠ ~ 50 belt asteroid Ani 791 7001500000000000000 ♠ ~ 50 belt asteroid Troilus 1208 7001500000000000000 ♠ ~ 50 Jupiter trojan Nausikaa 192 7001500000000000000 ♠ ~ 50 belt asteroid ( S ) Ausonia 63 7001500000000000000 ♠ ~ 50 7000110000000000000 ♠ 1.1 belt asteroid ( S ) Leukothea 35 7001500000000000000 ♠ ~ 50 7000110000000000000 ♠ 1.1 belt asteroid ( C ) Kythera 570 7001500000000000000 ♠ ~ 50 belt asteroid Asterope 233 7001500000000000000 ♠ ~ 50 belt asteroid ( T ) Euforbo 4063 7001500000000000000 ♠ ~ 50 Jupiter trojan Antilochus 1583 7001500000000000000 ♠ ~ 50 Jupiter trojan Abastumani 1390 7001500000000000000 ♠ ~ 50 belt asteroid Helga 522 7001500000000000000 ♠ ~ 50 belt asteroid ; Cybele Andromache 175 7001500000000000000 ♠ ~ 50 belt asteroid ( C ) Kolga 191 7001500000000000000 ♠ ~ 50 7000108000000000000 ♠ 1.08 belt asteroid ( C ) Gerlinde 663 7001500000000000000 ♠ ~ 50 belt asteroid Notburga 626 7001500000000000000 ♠ ~ 50 belt asteroid Aquitania 387 7001500000000000000 ♠ ~ 50 belt asteroid ( S ) Isis 42 7001500000000000000 ♠ ~ 50 belt asteroid ( S ) Urania 30 7001500000000000000 ♠ ~ 50 belt asteroid ( S ) Notes : Name of body, including alternative names using Roman numerals to designate moons ( such as `` Saturn I '' for Mimas ), and numbers to designate minor planets Mean radius including uncertainties Legend : Jupiter trojan moon of Jupiter moon of Saturn moon of Uranus moon of Neptune moon of Haumea moon of Makemake belt asteroid -- types : C D F G K M P R S T X From 20 to 50 km This list contains a few examples because there are about 589 asteroids in the asteroid belt with a measured radius between 20 and 50 km. Many thousands of objects of this size range have yet to be discovered in the Trans - Neptunian region. The number of digits is not an endorsement of significant figures. The table switches from × 10 kg to × 10 kg ( Eg ), and many of these mass values are assumed. ( See list of minor planets. ) Body Image Radius ( km ) Mass ( 10 kg ) Type -- notes Refs r M 21 Lutetia 7001500000000000000 ♠ ~ 50 7003170000000000000 ♠ 1700 belt asteroid ( M ) r 50 Virginia 7001500000000000000 ♠ ~ 50 asteroid r M 114 Kassandra 7001500000000000000 ♠ ~ 50 7003100000000000000 ♠ 1000 belt asteroid ( T ) r M 1021 Flammario 7001500000000000000 ♠ ~ 50 asteroid r M 162 Laurentia 7001500000000000000 ♠ ~ 50 belt asteroid r M 401 Ottilia 7001500000000000000 ♠ ~ 50 belt asteroid r M Thebe Jupiter XIV 7001500000000000000 ♠ ~ 50 moon of Jupiter r M 148 Gallia 7001500000000000000 ♠ ~ 50 7002980000000000000 ♠ 980 belt asteroid ( R ) r M 404 Arsinoe 7001500000000000000 ♠ ~ 50 belt asteroid ( C ) r M 27 Euterpe 7001500000000000000 ♠ ~ 50 belt asteroid ( S ) r M 773 Irmintraud 7001500000000000000 ♠ ~ 50 asteroid ( D ) r M 62 Erato 7001500000000000000 ♠ ~ 50 7002910000000000000 ♠ 910 belt asteroid ; Themis r M 26 Proserpina 7001450000000000000 ♠ ~ 45 7002900000000000000 ♠ 900 asteroid r M 345 Tercidina 7001450000000000000 ♠ ~ 45 belt asteroid ( C ) r M Juliet Uranus XI 7001450000000000000 ♠ ~ 45 moon of Uranus r M 58 Concordia 7001450000000000000 ♠ ~ 45 7002850000000000000 ♠ 850 asteroid r M 229 Adelinda 7001450000000000000 ♠ ~ 45 belt asteroid ( C ) r M 379 Huenna 7001450000000000000 ♠ ~ 45 7002480000000000000 ♠ 480 belt asteroid ( C ) r M 103 Hera 7001450000000000000 ♠ ~ 45 7002790000000000000 ♠ 790 asteroid r M 17 Thetis 7001450000000000000 ♠ ~ 45 7003120000000000000 ♠ 1200 asteroid r M 143 Adria 7001450000000000000 ♠ ~ 45 7002760000000000000 ♠ 760 belt asteroid r M 109 Felicitas 7001450000000000000 ♠ ~ 45 7002750000000000000 ♠ 750 asteroid r M 100 Hekate 7001450000000000000 ♠ ~ 45 7003100000000000000 ♠ 1000 asteroid r M 90 Antiope A 7001450000000000000 ♠ ~ 45 7002410000000000000 ♠ 410 asteroid ( C ) ; binary r M 227 Philosophia 7001450000000000000 ♠ ~ 45 belt asteroid r M Prometheus Saturn XVI 7001450000000000000 ♠ ~ 45 7002156600000000000 ♠ 156.6 moon of Saturn r M 110 Lydia 7001450000000000000 ♠ ~ 45 7002670000000000000 ♠ 670 asteroid r M Elara Jupiter VII 7001450000000000000 ♠ ~ 45 moon of Jupiter ; Himalia group r M 72 Feronia 7001450000000000000 ♠ ~ 45 7002670000000000000 ♠ 670 asteroid r M Echidna Typhon I 7001440000000000000 ♠ 44 ± 3 satellite of 42355 Typhon r M Thorondor Manwë I 7001400000000000000 ♠ ~ 40 satellite of Manwë r M 60558 Echeclus 174P / Echeclus 7001400000000000000 ♠ ~ 40 centaur r M S / 2000 ( 90 ) 1 7001400000000000000 ♠ ~ 40 asteroid moon of 90 Antiope r M 71 Niobe 7001400000000000000 ♠ ~ 40 7002610000000000000 ♠ 610 asteroid r M 102 Miriam 7001400000000000000 ♠ ~ 40 asteroid r M 97 Klotho 7001400000000000000 ♠ ~ 40 7002590000000000000 ♠ 590 asteroid r M 61 Danae 7001400000000000000 ♠ ~ 40 asteroid r M Thalassa Neptune IV 7001400000000000000 ♠ ~ 40 moon of Neptune r M 122 Gerda 7001400000000000000 ♠ ~ 40 7002570000000000000 ♠ 570 belt asteroid ( S ) r M Pandora Saturn XVII 7001400000000000000 ♠ ~ 40 7002135600000000000 ♠ 135.6 moon of Saturn r M 83 Beatrix 7001400000000000000 ♠ ~ 40 7002560000000000000 ♠ 560 belt asteroid ( X ) r M 32 Pomona 7001400000000000000 ♠ ~ 40 asteroid r M Belinda Uranus XIV 7001400000000000000 ♠ ~ 40 moon of Uranus r M 115 Thyra 7001400000000000000 ♠ ~ 40 asteroid r M Cressida Uranus IX 7001400000000000000 ♠ ~ 40 moon of Uranus r M 135 Hertha 7001400000000000000 ♠ ~ 40 asteroid r M 84 Klio 7001400000000000000 ♠ ~ 40 7002520000000000000 ♠ 520 asteroid r M 80 Sappho 7001400000000000000 ♠ ~ 40 asteroid r M 1001 Gaussia 7001400000000000000 ♠ ~ 40 asteroid r M 58534 Logos 7001400000000000000 ♠ ~ 40 7002270000000000000 ♠ 270 Kuiper belt object ; cubewano ; binary r M 124 Alkeste 7001400000000000000 ♠ ~ 40 7002470000000000000 ♠ 470 belt asteroid ( S ) r M 55576 Amycus 7001400000000000000 ♠ ~ 40 centaur r M 25 Phocaea 7001400000000000000 ♠ ~ 40 asteroid r M Weywot Quaoar I 7001350000000000000 ♠ ~ 35 satellite of Quaoar r M 8405 Asbolus 7001350000000000000 ♠ ~ 35 centaur r M 112 Iphigenia 7001350000000000000 ♠ ~ 35 asteroid r M Rosalind Uranus XIII 7001350000000000000 ♠ ~ 35 7002250000000000000 ♠ 250 moon of Uranus r M Caliban Uranus XVI 7001350000000000000 ♠ ~ 35 moon of Uranus r M 99 Dike 7001350000000000000 ♠ ~ 35 7002390000000000000 ♠ 390 asteroid r M 66 Maja 7001350000000000000 ♠ ~ 35 asteroid r M 116 Sirona 7001350000000000000 ♠ ~ 35 belt asteroid r M 44 Nysa 7001350000000000000 ♠ ~ 35 7002370000000000000 ♠ 370 belt asteroid ( E ) r M 10370 Hylonome 7001350000000000000 ♠ ~ 35 centaur r M 77 Frigga 7001350000000000000 ♠ ~ 35 7002350000000000000 ♠ 350 asteroid r M 55 Pandora 7001350000000000000 ♠ ~ 35 asteroid r M 133 Cyrene 7001350000000000000 ♠ ~ 35 7002310000000000000 ♠ 310 belt asteroid ( S ) r M 79 Eurynome 7001350000000000000 ♠ ~ 35 asteroid r M Zoe Logos I 7001350000000000000 ♠ ~ 35 satellite of 58534 Logos r M Naiad Neptune III 7001350000000000000 ♠ ~ 35 moon of Neptune r M 43 Ariadne 7001350000000000000 ♠ ~ 35 asteroid r M 101 Helena 7001350000000000000 ♠ ~ 35 7002300000000000000 ♠ 300 asteroid r M 108 Hecuba 7001300000000000000 ♠ ~ 30 7002390000000000000 ♠ 390 asteroid r M Desdemona Uranus X 7001300000000000000 ♠ ~ 30 moon of Uranus r M Halimede Neptune IX 7001300000000000000 ♠ ~ 30 moon of Neptune r M 52975 Cyllarus 7001300000000000000 ♠ ~ 30 centaur r M 82 Alkmene 7001300000000000000 ♠ ~ 30 asteroid r M 60 Echo 7001300000000000000 ♠ ~ 30 asteroid r M Crantor 83982 7001300000000000000 ♠ ~ 30 centaur r M Comet Hale -- Bopp C / 1995 O1 7001300000000000000 ♠ ~ 30 comet r M Pasiphae Jupiter VIII 7001300000000000000 ♠ ~ 30 moon of Jupiter r M 7066 Nessus 7001300000000000000 ♠ ~ 30 centaur r M Neso Neptune XIII 7001300000000000000 ♠ ~ 30 moon of Neptune r M 64 Angelina 7001300000000000000 ♠ ~ 30 belt asteroid ( E ) r M 67 Asia 7001300000000000000 ♠ ~ 30 asteroid r M 119 Althaea 7001300000000000000 ♠ ~ 30 7002200000000000000 ♠ 200 belt asteroid ( S ) r M 75 Eurydike 7001300000000000000 ♠ ~ 30 7002180000000000000 ♠ 180 belt asteroid ( M ) r M 142 Polana 7001300000000000000 ♠ ~ 30 7002180000000000000 ♠ 180 belt asteroid ( F ) r M 253 Mathilde 7001264000000000000 ♠ 26.4 7002103300000000000 ♠ 103.3 belt asteroid ( C ) r M 52872 Okyrhoe 7001250000000000000 ♠ ~ 25 centaur r M 2014 MU69 486958 7001250000000000000 ♠ ~ 25 KBO, cubewano, TNO r M Bianca Uranus VIII 7001250000000000000 ♠ ~ 25 7001920000000000000 ♠ 92 moon of Uranus r M Prospero Uranus XVIII 7001250000000000000 ♠ ~ 25 7001850000000000000 ♠ 85 moon of Uranus r M Setebos Uranus XIX 7001250000000000000 ♠ ~ 25 7001750000000000000 ♠ 75 moon of Uranus r M 123 Brunhild 7001250000000000000 ♠ ~ 25 belt asteroid r M 4348 Poulydamas 7001250000000000000 ♠ ~ 25 asteroid ; Jupiter Trojan r M 1000 Piazzia 7001250000000000000 ♠ ~ 25 belt asteroid r M 113 Amalthea 7001250000000000000 ♠ ~ 25 7002100000000000000 ♠ 100 belt asteroid r M Carme Jupiter XI 7001250000000000000 ♠ ~ 25 7002130000000000000 ♠ 130 moon of Jupiter ; Carme group r M 138 Tolosa 7001250000000000000 ♠ ~ 25 7001990000000000000 ♠ 99 belt asteroid ( S ) r M 126 Velleda 7001200000000000000 ♠ ~ 20 7001940000000000000 ♠ 94 belt asteroid r M 73 Klytia 7001200000000000000 ♠ ~ 20 7001920000000000000 ♠ 92 asteroid r M Sao Neptune XI 7001200000000000000 ♠ ~ 20 moon of Neptune r M 125 Liberatrix 7001200000000000000 ♠ ~ 20 7001870000000000000 ♠ 87 belt asteroid ( M ) r M Metis Jupiter XVI 7001200000000000000 ♠ ~ 20 7001360000000000000 ♠ 36 moon of Jupiter r M 132 Aethra 7001200000000000000 ♠ ~ 20 7001820000000000000 ♠ 82 belt asteroid ( M ) r M Ophelia Uranus VII 7001200000000000000 ♠ ~ 20 7001530000000000000 ♠ 53 moon of Uranus r M Laomedeia Neptune XII 7001200000000000000 ♠ ~ 20 moon of Neptune r M 118 Peitho 7001200000000000000 ♠ ~ 20 7001760000000000000 ♠ 76 belt asteroid r M 208 Lacrimosa 7001200000000000000 ♠ ~ 20 7001739000000000000 ♠ 73.9 belt asteroid ( S ) Koronis r M 136 Austria 7001200000000000000 ♠ ~ 20 7001680000000000000 ♠ 68 belt asteroid ( M ) r M 131 Vala 7001200000000000000 ♠ ~ 20 7001690000000000000 ♠ 69 belt asteroid r M Cordelia Uranus VI 7001200000000000000 ♠ ~ 20 7001440000000000000 ♠ 44 moon of Uranus r M Siarnaq Saturn XXIX 7001200000000000000 ♠ ~ 20 moon of Saturn r M Notes : Name of body, including alternative names using Roman numerals to designate moons ( such as `` Saturn I '' for Mimas ), and numbers to designate minor planets Mean radius including uncertainties Reference column specifically for radius ( r ) and mass ( M ) citations Legend : moon of Jupiter moon of Saturn moon of Uranus moon of Neptune belt asteroid -- types : C D E F M R S T X From 1 to 20 km This list contains only a few examples of objects between 1 and 20 km in radius. Body Image Radius ( km ) Mass ( 10 kg ) Type -- notes Refs r M 167 Urda 7001200000000000000 ♠ ~ 20 7001667000000000000 ♠ 66.7 belt asteroid ; Koronis family ; S - type r M Sinope Jupiter IX 7001200000000000000 ♠ ~ 20 7001760000000000000 ♠ 76 moon of Jupiter r M Psamathe Neptune X 7001200000000000000 ♠ ~ 20 7001370000000000000 ♠ 37 moon of Neptune r M 29P / Schwassmann -- Wachmann 7001200000000000000 ♠ ~ 20 comet ; centaur r M Lysithea Jupiter X 7001200000000000000 ♠ ~ 20 7001630000000000000 ♠ 63 moon of Jupiter ; Himalia group r M 158 Koronis 7001200000000000000 ♠ ~ 20 belt asteroid ; Koronis family ; S - type r M Hidalgo 944 7001190000000000000 ♠ 19 centaur, first to be discovered in 1920 ; historically called asteroid. M Hydra Pluto III 7001190000000000000 ♠ 19 moon of Pluto M Helene Saturn XII, Dione B 7001176000000000000 ♠ 17.6 ± 0.4 7001250000000000000 ♠ 25 moon of Saturn ; Dione trojan M Nix Pluto II 7001175000000000000 ♠ 17.5 moon of Pluto M 243 Ida 7001157000000000000 ♠ 15.7 7001420000000000000 ♠ 42 belt asteroid ; Koronis family ; S - type ; binary M 1655 Comas Solà 7001153000000000000 ♠ 15.3 ± 1.1 belt asteroid ; B - type M Atlas Saturn XV 7001151000000000000 ♠ 15.1 ± 0.9 7001660000000000000 ♠ 66 moon of Saturn M 226 Weringia 7001150000000000000 ♠ ~ 15 belt asteroid ; S - type r M 433 Eros 7001150000000000000 ♠ ~ 15 7001669000000000000 ♠ 66.9 Amor / NEA r M Stephano Uranus XX 7001150000000000000 ♠ ~ 15 7001220000000000000 ♠ 22 moon of Uranus r M Albiorix Saturn XXVI 7001150000000000000 ♠ ~ 15 moon of Saturn r M 1036 Ganymed 7001150000000000000 ♠ ~ 15 7001330000000000000 ♠ 33 NEA r M 1815 Beethoven 7001150000000000000 ♠ ~ 15 belt asteroid r M 31824 Elatus 7001150000000000000 ♠ ~ 15 centaur r M Perdita Uranus XXV 7001150000000000000 ♠ ~ 15 7001130000000000000 ♠ 13 moon of Uranus r M Linus Kalliope I 7001150000000000000 ♠ ~ 15 7001600000000000000 ♠ 60 asteroid moon of 22 Kalliope r Ananke Jupiter XII 7001150000000000000 ♠ ~ 15 7001382000000000000 ♠ 38.2 moon of Jupiter r M Pan Saturn XVIII 7001141000000000000 ♠ 14.1 ± 1.3 7000495000000000000 ♠ 4.95 moon of Saturn Dioretsa 20461 7001140000000000000 ♠ 14 ± 3 centaur ; damocloid Phobos Mars I 7001112670000000000 ♠ 11.267 7001107000000000000 ♠ 10.7 moon of Mars r M Telesto Saturn XIII or Tethys B 7001100000000000000 ♠ ~ 10 moon of Saturn Tethys trojan r M Paaliaq Saturn XX 7001100000000000000 ♠ ~ 10 7000819999999999999 ♠ 8.2 moon of Saturn r M Francisco Uranus XXII 7001100000000000000 ♠ ~ 10 7000720000000000000 ♠ 7.2 moon of Uranus r M Calypso Saturn XIV or Tethys C 7001100000000000000 ♠ ~ 10 moons of Saturn ; Tethys trojan r M Leda Jupiter XIII 7001100000000000000 ♠ ~ 10 7001110000000000000 ♠ 11 moon of Jupiter ; Himalia group r M Ferdinand Uranus XXIV 7001100000000000000 ♠ ~ 10 7000540000000000000 ♠ 5.4 moon of Uranus r M Margaret Uranus XXIII 7001100000000000000 ♠ ~ 10 7000540000000000000 ♠ 5.4 moon of Uranus r M 149 Medusa 7001100000000000000 ♠ ~ 10 7000800000000000000 ♠ 8 belt asteroid r M Romulus Sylvia I 7001100000000000000 ♠ ~ 10 7000400000000000000 ♠ 4 asteroid moon of 87 Sylvia r M Ymir Saturn XIX 7001100000000000000 ♠ ~ 10 moon of Saturn r M Trinculo Uranus XXI 7001100000000000000 ♠ ~ 10 7000390000000000000 ♠ 3.9 moon of Uranus r M Cupid Uranus XXVII 7001100000000000000 ♠ ~ 10 7000380000000000000 ♠ 3.8 moon of Uranus r M S / 2004 N 1 7001100000000000000 ♠ ~ 10 moon of Neptune r M 2002 Euler 7001100000000000000 ♠ ~ 10 7000550000000000000 ♠ 5.5 belt asteroid r M Adrastea Jupiter XV 7001100000000000000 ♠ ~ 10 7000200000000000000 ♠ 2 moon of Jupiter r M Kiviuq Saturn XXIV 7001100000000000000 ♠ ~ 10 moon of Saturn r M 2000 Herschel 7001100000000000000 ♠ ~ 10 belt asteroid r M Tarvos Saturn XXI 7001100000000000000 ♠ ~ 10 moon of Saturn r M S / 2006 ( 624 ) 1 Hektor I 7001100000000000000 ♠ ~ 10 asteroid moon of 624 Hektor r M Kerberos Pluto IV 7001100000000000000 ♠ ~ 10 moon of Pluto r M 2685 Masursky 7001100000000000000 ♠ ~ 10 5 -- 11 belt asteroid r M Styx Pluto V 7001100000000000000 ♠ ~ 10 moon of Pluto r M 951 Gaspra 7000610000000000000 ♠ 6.1 ± 0.4 2 -- 3 belt asteroid M ( 65407 ) 2002 RP120 7000500000000000000 ♠ ~ 5 7000310000000000000 ♠ 3.1 Damocloid ( retrograde ) & possible ejected SDO r M Bestla Saturn XXXIX 7000500000000000000 ♠ ~ 5 moon of Saturn r M Petit - Prince Eugenia I 7000500000000000000 ♠ ~ 5 7000120000000000000 ♠ 1.2 asteroid moon of 45 Eugenia r M Deimos Mars II 7000500000000000000 ♠ ~ 5 7000148000000000000 ♠ 1.48 moon of Mars r M Ijiraq Saturn XXII 7000500000000000000 ♠ ~ 5 moon of Saturn r M S / 2002 ( 121 ) 1 Hermione I 7000500000000000000 ♠ ~ 5 7000160000000000000 ♠ 1.6 asteroid moon of 121 Hermione r M Halley 's Comet 7000500000000000000 ♠ ~ 5 6998300000000000000 ♠ 0.03 comet r S / 2001 ( 107 ) 1 Camilla I 7000500000000000000 ♠ ~ 5 7000150000000000000 ♠ 1.5 asteroid moon of 107 Camilla r M Mab Uranus XXVI 7000500000000000000 ♠ ~ 5 moon of Uranus r M Erriapus Saturn XXVIII 7000500000000000000 ♠ ~ 5 moon of Saturn r M 26858 Misterrogers 7000500000000000000 ♠ ~ 5 belt asteroid r M Callirrhoe Jupiter XVII 7000500000000000000 ♠ ~ 5 moon of Jupiter r M Themisto Jupiter XVIII 7000500000000000000 ♠ ~ 5 6999690000000000000 ♠ 0.69 moon of Jupiter r M Remus Sylvia II 7000500000000000000 ♠ ~ 5 6999200000000000000 ♠ 0.2 asteroid moon of 87 Sylvia r M S / 2003 ( 379 ) 1 Huenna I 7000500000000000000 ♠ ~ 5 asteroid moon of 379 Huenna r M S / 2003 ( 130 ) 1 Elektra I 7000500000000000000 ♠ ~ 5 6999400000000000000 ♠ 0.4 asteroid moon of 130 Elektra r M S / 2004 ( 45 ) 1 Eugenia II 7000500000000000000 ♠ ~ 5 asteroid moon of 45 Eugenia r M 118401 LINEAR 7000500000000000000 ♠ ~ 5 6999230000000000000 ♠ 0.23 main - belt comet r M 4179 Toutatis 7000500000000000000 ♠ ~ 5 6998500000000000000 ♠ 0.05 NEA r M 3200 Phaethon 7000500000000000000 ♠ ~ 5 6999140000000000000 ♠ 0.14 Apollo asteroid ; B - type r M 2P / Encke 7000500000000000000 ♠ < 5 comet r M C / 1996 B2 Comet Hyakutake 7000500000000000000 ♠ < 5 comet r M 81P / Wild Wild 2 7000500000000000000 ♠ < 5 comet r M Polydeuces Saturn XXXIV or Dione C 7000500000000000000 ♠ < 5 6998300000000000000 ♠ 0.03 moon of Saturn ; Dione trojan r M 17P / Holmes 7000500000000000000 ♠ < 5 comet r M 5535 Annefrank 7000500000000000000 ♠ < 5 belt asteroid r M 3753 Cruithne 7000500000000000000 ♠ < 5 6999130000000000000 ♠ 0.13 Aten asteroid & quasi-satellite of Earth r M ( 285263 ) 1998 QE2 7000500000000000000 ♠ < 5 NEA ; binary r M 4055 Magellan 7000500000000000000 ♠ < 5 Amor asteroid ; V - type r M 9969 Braille 7000500000000000000 ♠ < 5 Mars - crosser asteroid r M 132524 APL 7000500000000000000 ♠ < 5 belt asteroid r M ( 6178 ) 1986 DA 7000500000000000000 ♠ < 5 6997200000000000000 ♠ 0.002 amor asteroid ; M - type r M Comet Comas Solà 7000420000000000000 ♠ 4.2 Jupiter - family comet M Daphnis Saturn XXXV 7000390000000000000 ♠ 3.9 ± 0.8 6998840000000000000 ♠ 0.084 moon of Saturn r 9P / Tempel 7000279999999999999 ♠ 2.8 6998750000000000000 ♠ 0.075 comet M 2867 Šteins 7000265000000000000 ♠ 2.65 belt asteroid ; E-type M 19P / Borrelly 7000240000000000000 ♠ 2.4 Jupiter - family comet M Pallene Saturn XXXIII 7000222000000000000 ♠ 2.22 ± 0.07 6998429999999999999 ♠ 0.043 moon of Saturn r M Comet Churyumov -- Gerasimenko 7000190000000000000 ♠ 1.9 Jupiter - family comet r M ( 53319 ) 1999 JM 8 7000175000000000000 ♠ 1.75 Apollo asteroid ; PHA M Methone Saturn XXXII 7000145000000000000 ♠ 1.45 ± 0.03 6998190000000000000 ♠ 0.019 moon of Saturn r M Notes : Name of body, including alternative names using Roman numerals to designate moons ( such as `` Saturn I '' for Mimas ), and numbers to designate minor planets Mean radius including uncertainties Reference column specifically for radius ( r ) and mass ( M ) citations Legend : moon of Mars moon of Jupiter moon of Saturn moon of Uranus moon of Neptune moon of Pluto Types : Main belt asteroids ; Comets ; NEA : Near - Earth asteroid ; Asteroid moon Below 1 km This list contains only a few examples of objects below 1 km in radius. In the asteroid belt alone there are estimated to be between 1.1 and 1.9 million objects with a radius above 0.5 km, many of which are in the range 0.5 -- 1.0 km. Countless more have a radius below 0.5 km. Very few objects in this size range have been explored or even imaged. The exceptions are objects that have been visited by a probe, or have passed close enough to Earth to be imaged. Radius is by mean geometric radius. Number of digits not an endorsement of significant figures. Mass scale shifts from × 10 to 10 kg, which is 10 grams ( Petagram -- Pg ). Currently most of the objects of mass between 10 kg to 10 kg ( less than 1000 teragrams ( Tg ) ) listed here are near - Earth asteroids ( NEAs ). ( See also List of NEAs by distance from Sun. ) 1994 WR has less mass than the Great Pyramid of Giza, 5.9 × 10 kg. For more about very small objects in the Solar System, see meteoroid, micrometeoroid, and interplanetary dust cloud. ( See also Visited / imaged bodies. ) Body Image Radius ( m ) Mass ( 10 kg ) Type -- notes Refs 1620 Geographos 7002885000000000000 ♠ 885 7000400000000000000 ♠ 4 NEA Apollo M 1862 Apollo 7002850000000000000 ♠ 850 7000509999999999999 ♠ 5.1 NEA Apollo Q - type r M ( 214869 ) 2007 PA 8 7002800000000000000 ♠ ~ 800 NEA Apollo M 100000 Astronautica 7002800000000000000 ♠ ~ 800 Inner belt asteroid M Dactyl 7002700000000000000 ♠ 700 Moon of 243 Ida r M 1566 Icarus 7002700000000000000 ♠ 700 7000290000000000000 ♠ 2.9 NEA Apollo U-type r M 4769 Castalia 7002700000000000000 ♠ 700 7000130000000000000 ♠ 1.3 NEA Apollo M ( 137108 ) 1999 AN 10 7002650000000000000 ♠ 650 NEA Apollo r M ( 29075 ) 1950 DA 7002600000000000000 ♠ 600 7000300000000000000 ♠ 3 NEA Apollo r M ( 66391 ) 1999 KW 4 7002600000000000000 ♠ 600 7000233000000000000 ♠ 2.33 NEA Aten Mercury - crosser r M 46P / Wirtanen 7002600000000000000 ♠ 600 Comet r M 103P / Hartley Hartley 2 7002570000000000000 ♠ 570 ± 80 6999300000000000000 ♠ 0.3 Comet r 3908 Nyx 7002520000000000000 ♠ 520 7000500000000000000 ♠ 5 NEA Amor V - type r M 14827 Hypnos 7002450000000000000 ♠ 450 Comet dormant comet M 2062 Aten 7002450000000000000 ♠ 450 6999760000000000000 ♠ 0.76 NEA Aten M 2007 CA 19 7002432000000000000 ♠ 432 7000120000000000000 ♠ 1.2 NEA Apollo r M 6489 Golevka 7002350000000000000 ♠ 350 NEA Apollo M 25143 Itokawa 7002346000000000000 ♠ 346 6998358000000000000 ♠ 0.0358 NEA Apollo r M Aegaeon Saturn LIII 7002330000000000000 ♠ 330 ± 60 moon of Saturn r M 2004 XP 14 7002300000000000000 ♠ 300 NEA Apollo r M ( 144898 ) 2004 VD 17 7002290000000000000 ♠ 290 7000300000000000000 ♠ 3 NEA Apollo r 101955 Bennu 7002275000000000000 ♠ 275 NEA Apollo PHO ( 308635 ) 2005 YU 55 7002180000000000000 ♠ 180 NEA Apollo PHO M 4660 Nereus 7002165000000000000 ♠ 165 NEA Apollo M ( 357439 ) 2004 BL 86 7002162500000000000 ♠ 162.5 NEA Apollo binary r M 99942 Apophis 7002162500000000000 ♠ 162.5 6998500000000000000 ♠ 0.05 NEA Aten PHO S / 2009 S 1 7002150000000000000 ♠ 150 moon of Saturn r M 2010 TK 7 7002150000000000000 ♠ 150 Earth trojan Apollo r M 2007 TU 24 7002125000000000000 ♠ 125 NEA Apollo PHO M 2002 JE 9 7002100000000000000 ♠ 100 NEA Apollo PHO r M 2010 XC 15 7002100000000000000 ♠ 100 NEA Apollo PHO r M 1994 WR 12 7001650000000000000 ♠ 65 6997200000000000000 ♠ 0.002 NEA Aten ( 410777 ) 2009 FD 7001650000000000000 ♠ 65 6997280000000000000 ♠ 0.0028 NEA Apollo 2008 HJ 7001180000000000000 ♠ 18 6994500000000000000 ♠ 0.000 005 NEA fast rotator, LCDB, ( 43 s ) 367943 Duende 7001150000000000000 ♠ 15 NEA r M 1998 KY 26 7001150000000000000 ♠ 15 NEA fast rotator ( 10 min ) M Notes : Name of body, including alternative names using Roman numerals to designate moons ( such as `` Saturn LIII '' for Aegaeon ), and numbers to designate minor planets Mean radius including uncertainties Reference column specifically for radius ( r ) and mass ( M ) citations Legend : minor - planet moon moon of Saturn NEA : near - Earth asteroid ; Apollo asteroids are a group of NEAs Surface gravity The surface gravity at the equator of a body can in most cases be accurately calculated using Newton 's law of universal gravitation and centrifugal force. The gravitational acceleration at the equator is given by Newton 's law of universal gravitation. The formula that follows from this law is : a g = G m r 2 ( displaystyle a_ ( g ) = G ( \frac ( m ) ( r ^ ( 2 ) ) ) ) where a is the magnitude of the gravitational acceleration G is the gravitational constant m is the mass of the celestial body r is the equatorial radius of the celestial body ( if this varies significantly, the mean equatorial radius is used ) The magnitude of the outward acceleration due to centrifugal force is given by a c = 4 π 2 r T 2 ( displaystyle a_ ( c ) = 4 pi ^ ( 2 ) ( \frac ( r ) ( T ^ ( 2 ) ) ) ) where T is the rotation period of the celestial body The surface gravity at the equator is then given by g = a g − a c = G m r 2 − 4 π 2 r T 2 ( displaystyle g = a_ ( g ) - a_ ( c ) = ( \frac ( Gm ) ( r ^ ( 2 ) ) ) - ( \frac ( 4 pi ^ ( 2 ) r ) ( T ^ ( 2 ) ) ) ) Notes Using equatorial radius and assuming body is spherical Using three radii and assuming body is spheroid * Radius is known only very approximately Radius has been determined by various methods, such as optical ( Hubble ), thermal ( Spitzer ), or direct imaging via spacecraft Unknown radius, generic assumed albedo of 0.09 Well studied asteroid or moon whose dimensions and mass are very well known. Asteroid sizes and masses taken from James Baer 's ( Bio ) personal website. Mass has been determined by perturbation. For asteroids, see James Baer 's personal website. Note : For many of the well - determined moons, radii were taken from the JPL Solar System Dynamics page. Radius has been determined by an occultation References Jump up ^ Brown, M. `` The Dwarf Planets ''. Caltech. Archived from the original on 2011 - 02 - 12. Retrieved 2008 - 09 - 25. Jump up ^ Britt, D.T. ; Consolmagno, G.J. ; Merline, W.J. ( 2006 ). `` Small Body Density and Porosity : New Data, New Insights '' ( PDF ). Lunar and Planetary Science XXXVII. Retrieved 2008 - 12 - 16. ^ Jump up to : `` Planetary Satellite Physical Parameters ''. JPL ( Solar System Dynamics ). 2008 - 10 - 24. Retrieved 2008 - 12 - 16. Jump up ^ Williams, D.R. ( 2007 - 11 - 23 ). `` Uranian Satellite Fact Sheet ''. NASA ( National Space Science Data Center ). Archived from the original on 2010 - 01 - 18. Retrieved 2008 - 12 - 12. Jump up ^ Mike Brown, How many dwarf planets are there in the outer solar system ? `` Archived copy ''. Archived from the original on 2011 - 10 - 18. Retrieved 2011 - 09 - 23. ^ Jump up to : Thomas, P.C. ( July 2010 ). `` Sizes, shapes, and derived properties of the saturnian satellites after the Cassini nominal mission '' ( PDF ). Icarus. 208 ( 1 ) : 395 -- 401. Bibcode : 2010Icar... 208... 395T. doi : 10.1016 / j. icarus. 2010.01. 025. Jump up ^ `` Iapetus ' peerless equatorial ridge ''. Jump up ^ `` Uranus Fact Sheet ''. Jump up ^ Emilio, M. ; Kuhn, J.R. ; Bush, R.I. ; Scholl, I.F. ( 2012 ). `` Measuring the Solar Radius from Space during the 2003 and 2006 Mercury Transits ''. The Astrophysical Journal. 750 ( 2 ) : 135. Bibcode : 2012ApJ... 750... 135E. arXiv : 1203.4898. doi : 10.1088 / 0004 - 637X / 750 / 2 / 135. Jump up ^ New Horizons press conference, 2015 - 7 - 24 Jump up ^ Sicardy, B. ; et al. ( 2011 ). `` Size, density, albedo and atmosphere limit of dwarf planet Eris from a stellar occultation '' ( PDF ). European Planetary Science Congress Abstracts. 6 : 137. Bibcode : 2011epsc. conf... 137S. Retrieved 2011 - 09 - 14. Jump up ^ Brown, Michael E. ; Schaller, Emily L. ( 15 June 2007 ). `` The Mass of Dwarf Planet Eris ''. Science. 316 ( 5831 ) : 1585. Bibcode : 2007Sci... 316.1585 B. PMID 17569855. doi : 10.1126 / science. 1139415. Jump up ^ Pál, András ; et al. ( 2016 ). `` Large size and slow rotation of the trans - Neptunian object ( 225088 ) 2007 OR10 discovered from Herschel and K2 observations ''. The Astronomical Journal. 151 ( 5 ) : 117. doi : 10.3847 / 0004 - 6256 / 151 / 5 / 117. Jump up ^ M.E. Brown ( 2013 ). `` On the size, shape, and density of dwarf planet Makemake ''. The Astrophysical Journal Letters. 767 : L7 ( 5pp ). Bibcode : 2013ApJ... 767L... 7B. arXiv : 1304.1041. doi : 10.1088 / 2041 - 8205 / 767 / 1 / L7. ^ Jump up to : Lacerda, Pedro ; Jewitt, David ( 2006 ). `` Densities of Solar System Objects from their Rotational Lightcurves ''. The Astronomical Journal. 133 ( 4 ) : 1393. arXiv : astro - ph / 0612237. doi : 10.1086 / 511772. Jump up ^ Fornasier, S. ; et al. ( 2013 ). `` TNOs are Cool : A survey of the trans - Neptunian region. VIII. Combined Herschel PACS and SPIRE observations of 9 bright targets at 70 -- 500 μm ''. Astronomy & Astrophysics. 555 : A15. arXiv : 1305.0449. doi : 10.1051 / 0004 - 6361 / 201321329. Jump up ^ Roatsch Jaumann et al. 2009, p. 765, Tables 24.1 -- 2 Jump up ^ `` Agenda - NASA Exploration Science Forum 2015 ''. Jump up ^ Rayman, M.D. ( 28 May 2015 ). `` Dawn Journal, May 28, 2015 ''. Jet Propulsion Laboratory. Retrieved 23 July 2015. ^ Jump up to : Wm. Robert Johnston ( 24 March 2015 ). `` List of Known Trans - Neptunian Objects ''. Johnston 's Archive. Retrieved 21 July 2015. ^ Jump up to : Carry, B. ; et al. ( 2011 ). `` Integral - field spectroscopy of ( 90482 ) Orcus - Vanth ''. Astronomy & Astrophysics. 534 : A115. Bibcode : 2011A&A... 534A. 115C. arXiv : 1108.5963. doi : 10.1051 / 0004 - 6361 / 201117486. Jump up ^ J.A. Stansberry ( 2012 ). `` Physical Properties of Trans - Neptunian Binaries ( 120347 ) Salacia -- Actaea and ( 42355 ) Typhon -- Echidna ''. Icarus. 219 ( 2 ) : 676 -- 688. Bibcode : 2012Icar... 219... 676S. doi : 10.1016 / j. icarus. 2012.03. 029. Retrieved 2012 - 04 - 27. ^ Jump up to : Vilenius, E. ; et al. ( 2014 ). `` '' TNOs are Cool `` : A survey of the trans - Neptunian region X. Analysis of classical Kuiper belt objects from Herschel and Spitzer observations ''. Astronomy & Astrophysics. 564 : A35. arXiv : 1403.6309. doi : 10.1051 / 0004 - 6361 / 201322416. Jump up ^ Santos - Sanz, P. ; et al. ( 2012 ). `` '' TNOs are Cool `` : A Survey of the Transneptunian Region IV. Size / albedo characterization of 15 scattered disk and detached objects observed with Herschel Space Observatory - PACS ''. Astronomy & Astrophysics. 541 : A92. arXiv : 1202.1481. doi : 10.1051 / 0004 - 6361 / 201118541. Jump up ^ M.E. Brown ( 4 November 2013 ). `` The density of mid-sized Kuiper belt object 2002 UX25 and the formation of the dwarf planets ''. The Astrophysical Journal. 778 ( 2 ) : L34. arXiv : 1311.0553. doi : 10.1088 / 2041 - 8205 / 778 / 2 / L34. Jump up ^ `` Pushing the Limits of K2 : Observing Trans - Neptunian Objects S3K2 : Solar System Studies with K2 '' ( PDF ). Archived from the original ( PDF ) on 2016 - 03 - 05. Jump up ^ Lorenzi, V. ; Pinilla - Alonso, N. ; Licandro, J.P. ; Dalle Ore, C.M. ; Emery ( 24 January 2014 ). `` Rotationally resolved spectroscopy of ( 20000 ) Varuna in the near - infrared ''. Astronomy & Astrophysics. 562 : A85. Bibcode : 2014A&A... 562A... 85L. arXiv : 1401.5962. doi : 10.1051 / 0004 - 6361 / 201322251. cited data from : Lellouch et al., 2013, of estimated diameter of 668 ( + 154, − 86 ) km Jump up ^ `` 2010 KZ39 ''. IAU Minor Planet Center. Archived from the original on 2012 - 07 - 15. Retrieved 2011 - 08 - 18. Jump up ^ Fu, R.R. ; Hager, B.H. ; Ermakov, A.I. ; Zuber, M.T. ( 2013 ). `` Early Viscous Relaxation of Asteroid Vesta and Implications for Late Impact - Driven Despinning '' ( PDF ). 44th Lunar and Planetary Science Conference. 44 : 2115. Bibcode : 2013LPI... 44.2115 F. CS1 maint : Multiple names : authors list ( link ) Jump up ^ Asmar, S.W. ; Konopliv, A.S. ; Park, R.S. ; Bills, B.G. ; Gaskell, R. ; Raymond, C.A. ; Russell, C.T. ; Smith, D.E. ; Toplis, M.J. ; Zuber, M.T. ( 2012 ). `` The Gravity Field of Vesta and Implications for Interior Structure '' ( PDF ). 43rd Lunar and Planetary Science Conference. 43 : 2600. Bibcode : 2012LPI... 43.2600 A. CS1 maint : Multiple names : authors list ( link ) ^ Jump up to : Russell, C.T. ; et al. ( 2012 ). `` Dawn at Vesta : Testing the Protoplanetary Paradigm ''. Science. 336 ( 6082 ) : 684 -- 686. Bibcode : 2012Sci... 336... 684R. PMID 22582253. doi : 10.1126 / science. 1219381. ^ Jump up to : Carry, B. ; et al. ( 2009 ). `` Physical properties of ( 2 ) Pallas ''. Icarus. 205 ( 2 ) : 460. arXiv : 0912.3626. doi : 10.1016 / j. icarus. 2009.08. 007. Jump up ^ Baer, James ; Steven R. Chesley ( 2008 ). `` Astrometric masses of 21 asteroids, and an integrated asteroid ephemeris '' ( PDF ). Celestial Mechanics and Dynamical Astronomy. 100 ( 2008 ) : 27 -- 42. Bibcode : 2008CeMDA. 100... 27B. doi : 10.1007 / s10569 - 007 - 9103 - 8. Retrieved 11 November 2008. Jump up ^ `` JPL definition of Main - belt Asteroid ( MBA ) ''. JPL Solar System Dynamics. Retrieved 2009 - 03 - 12. Jump up ^ Ragozzine, D. ; Brown, M.E. ( 2009 ). `` Orbits and Masses of the Satellites of the Dwarf Planet Haumea ( 2003 EL61 ) ''. The Astronomical Journal. 137 ( 6 ) : 4766 -- 4776. Bibcode : 2009AJ... 137.4766 R. arXiv : 0903.4213. doi : 10.1088 / 0004 - 6256 / 137 / 6 / 4766. ^ Jump up to : M. Kaasalainen ( 2002 ). `` Models of Twenty Asteroids from Photometric Data '' ( PDF ). Icarus. 159 ( 2 ) : 369 -- 395. Bibcode : 2002Icar... 159... 369K. doi : 10.1006 / icar. 2002.6907. Retrieved 2009 - 06 - 23. Jump up ^ Lim, L ; McConnochie, T ; Belliii, J ; Hayward, T ( 2005 ). `` Thermal infrared ( 8 ? 13 ? m ) spectra of 29 asteroids : The Cornell Mid-Infrared Asteroid Spectroscopy ( MIDAS ) Survey '' ( PDF ). Icarus. 173 ( 2 ) : 385. Bibcode : 2005Icar... 173... 385L. doi : 10.1016 / j. icarus. 2004.08. 005. ^ Jump up to : J. Torppa ; et al. ( 2003 ). `` Shapes and rotational properties of thirty asteroids from photometric data '' ( PDF ). Icarus. 164 ( 2 ) : 346 -- 383. Bibcode : 2003Icar... 164... 346T. doi : 10.1016 / S0019 - 1035 ( 03 ) 00146 - 5. Jump up ^ Carry, Benoit ; Snodgrass, Colin ; Lacerda, Pedro ; Hainaut, Olivier ; Dumas, Christophe ( 16 July 2012 ). `` Characterisation of candidate members of ( 136108 ) Haumea 's family : II. Follow - up observations '' ( PDF ). Astronomy & Astrophysics. 544 : A137. Bibcode : 2012A&A... 544A. 137C. arXiv : 1207.6491. doi : 10.1051 / 0004 - 6361 / 201219044. Archived from the original ( PDF ) on 7 November 2014. Retrieved 8 June 2014. ^ Jump up to : Grundy, W.M. ; Stansberry, J.A. ; Noll K.S. ; Stephens, D.C. ; et al. ( 2007 ). `` The orbit, mass, size, albedo, and density of ( 65489 ) Ceto / Phorcys : A tidally - evolved binary Centaur ''. Icarus. 191 : 286 -- 297. Bibcode : 2007Icar... 191... 286G. arXiv : 0704.1523. doi : 10.1016 / j. icarus. 2007.04. 004. Jump up ^ JPL / NASA, 2012 Apr 26. Cassini Finds Saturn Moon Has Planet - Like Qualities Jump up ^ Ďurech, J. ; et al. ( 2007 ). `` Physical models of ten asteroids from an observers ' collaboration network '' ( PDF ). Astronomy and Astrophysics. 465 : 331. Bibcode : 2007A&A... 465... 331D. doi : 10.1051 / 0004 - 6361 : 20066347. Jump up ^ `` Planetary occultations : 2001 results ''. Jump up ^ F. Marchis ; et al. ( 2006 ). `` Shape, size and multiplicity of main - belt asteroids I. Keck Adaptive Optics survey ''. Icarus. 185 ( 1 ) : 39 -- 63. Bibcode : 2006Icar... 185... 39M. PMC 2600456. PMID 19081813. doi : 10.1016 / j. icarus. 2006.06. 001. Jump up ^ Karkoschka, Erich ( 2001 ). `` Voyager 's Eleventh Discovery of a Satellite of Uranus and Photometry and the First Size Measurements of Nine Satellites ''. Icarus. 151 ( 1 ) : 69 -- 77. Bibcode : 2001Icar... 151... 69K. doi : 10.1006 / icar. 2001.6597. Jump up ^ `` JPL Small - Body Database Browser : 566 Stereoskopia ( 1905 QO ) '' ( 2010 - 06 - 24 last obs ). Retrieved 2010 - 09 - 05. ^ Jump up to : Carry, B. ( December 2012 ), `` Density of asteroids '', Planetary and Space Science, 73, pp. 98 -- 118, Bibcode : 2012P&SS... 73... 98C, arXiv : 1203.4336, doi : 10.1016 / j. pss. 2012.03. 009. See Table 1. Jump up ^ Tedesco ; et al. ( 2004 ). `` Supplemental IRAS Minor Planet Survey ( SIMPS ) ''. IRAS - A-FPA - 3 - RDR - IMPS - V6. 0. Planetary Data System. Archived from the original on January 17, 2010. Retrieved December 29, 2008. Jump up ^ Porco, Carolyn C. ; et al. ( March 2003 ). `` Cassini Imaging of Jupiter 's Atmosphere, Satellites, and Rings '' ( PDF ). Science. 299 ( 5612 ) : 1541 -- 1547. Bibcode : 2003Sci... 299.1541 P. PMID 12624258. doi : 10.1126 / science. 1079462. Jump up ^ Emelyanov, N.V. ; Archinal, B.A. ; A'hearn, M.F. ; et al. ( 2005 ). `` The mass of Himalia from the perturbations on other satellites ''. Astronomy and Astrophysics. 438 ( 3 ) : L33 -- L36. Bibcode : 2005A&A... 438L... 33E. doi : 10.1051 / 0004 - 6361 : 200500143. Jump up ^ Michalak, G. ( 2001 ). `` Determination of asteroid masses ''. Astronomy & Astrophysics. 374 ( 2 ) : 703 -- 711. Bibcode : 2001A&A... 374... 703M. doi : 10.1051 / 0004 - 6361 : 20010731. Retrieved 2008 - 11 - 10. Jump up ^ Bange, J.F ; A. Bec - Borsenberger ( 1997 ). `` DETERMINATION OF THE MASSES OF MINOR PLANETS '' ( PDF ) : 169. Retrieved 2008 - 11 - 10. Jump up ^ Spitale, J.N. ; et al. ( 2006 ). `` The orbits of Saturn 's small satellites derived from combined historic and Cassini imaging observations ''. The Astronomical Journal. 132 ( 2 ) : 692 -- 710. Bibcode : 2006AJ... 132... 692S. doi : 10.1086 / 505206. Archived from the original on 2011 - 02 - 12. Jump up ^ Chamberlin, Alan. `` JPL Small - Body Database Search Engine ''. Jump up ^ Jonathan Amos -- Asteroid Lutetia has thick blanket of debris ( 4 October 2010 ) -- BBC News Archived 12 February 2011 at WebCite Jump up ^ `` JPL Small - Body Database Browser : 60558 Echeclus ( 2000 EC98 ) '' ( 2008 - 05 - 07 last obs ). Retrieved 2008 - 09 - 09. Jump up ^ `` JPL Small - Body Database Browser : 944 Hidalgo ( 1920 HZ ) '' ( 2008 - 05 - 09 last obs ). Retrieved 2008 - 03 - 09. Jump up ^ Talbert, Tricia ( 15 July 2015 ). `` Hydra Emerges from the Shadows ''. ^ Jump up to : Thomas 2010. Jump up ^ `` New Horizons ''. Jump up ^ Britt, D.T. ; Yeomans, D.K. ; Housen, K. ; Consolmagno, G. ( 2002 ). `` Asteroid Density, Porosity, and Structure '' ( PDF ). Asteroids III. Tucson : University of Arizona : 485 -- 500. Bibcode : 2002aste. conf... 485B. Retrieved 2008 - 10 - 27. Jump up ^ `` JPL Small - Body Database Browser 1655 Comas Sola ''. NASA. Retrieved 2014 - 11 - 07. Physical Parameter Table, diameter, 30.57 Jump up ^ F. Marchis ; et al. ( 2003 ). `` A three - dimensional solution for the orbit of the asteroidal satellite of 22 Kalliope ''. Icarus. 165 ( 1 ) : 112 -- 120. Bibcode : 2003Icar... 165... 112M. doi : 10.1016 / S0019 - 1035 ( 03 ) 00195 - 7. Archived from the original on 2011 - 02 - 12. ^ Jump up to : Porco, C.C. ; et al. ( 2007 ). `` Saturn 's Small Inner Satellites : Clues to Their Origins ''. Science. 318 ( 5856 ) : 1602 -- 1607. Bibcode : 2007Sci... 318.1602 P. PMID 18063794. doi : 10.1126 / science. 1143977. Archived from the original on 2011 - 02 - 12. Jump up ^ Harris, Alan W. ; Delbó, Marco ; Binzel, Richard P. ; Davies, John K. ; Roberts, Julie ; Tholen, David J. ; Whiteley, Robert J. ( 1 October 2001 ). `` Visible to Thermal - Infrared Spectrophotometry of a Possible Inactive Cometary Nucleus ''. Icarus. 153 ( 2 ) : 332 -- 337. doi : 10.1006 / icar. 2001.6687 -- via ScienceDirect. Jump up ^ Chamberlin, Alan. `` JPL Small - Body Database Browser ''. Jump up ^ Chamberlin, Alan. `` JPL Small - Body Database Browser ''. Jump up ^ Veverka, J. ; Belton, M. ; Klaasen, K. ; Chapman, C. ( 1994 ). `` Galileo 's Encounter with 951 Gaspra : Overview ''. Icarus. 107 : 2. Bibcode : 1994Icar... 107... 2V. doi : 10.1006 / icar. 1994.1002. Jump up ^ Using the volume of an ellipsoid of 15x8x8km * an assumed rubble pile density of 0.6 g / cm yields a mass ( m = d * v ) of ~ 3.02 E + 14 kg Jump up ^ `` Comet Hyakutake Home Page ( JPL ) ''... jpl.nasa.gov. Archived from the original on 2011 - 02 - 12. Retrieved 2011 - 01 - 04. ^ Jump up to : `` List of Jupiter - Family and Halley - Family Comets ''. University of Central Florida : Physics. 28 July 2015. Retrieved 6 September 2015. Jump up ^ `` JPL Small - Body Database Browser 32P / Comas Sola ''. NASA. Retrieved 2014 - 11 - 07. Jump up ^ `` The Nucleus of Comet 9P / Tempel 1 : Shape & Geology From Two Flybys ''. Jump up ^ Keller, H. ; et al. ( 2010 ). `` E-Type Asteroid ( 2867 ) Steins as Imaged by OSIRIS on Board Rosetta ''. Science. 327 ( 5962 ) : 190. Bibcode : 2010Sci... 327... 190K. PMID 20056887. doi : 10.1126 / science. 1179559. Jump up ^ `` 19P / Borrelly - By the Numbers - Planets - NASA Solar System Exploration ''. ^ Jump up to : Thomas, P.C. ; Burns, J.A. ; Tiscareno, M.S. ; Hedman, M.M. ; et al. ( 2013 ). `` Saturn 's Mysterious Arc - Embedded Moons : Recycled Fluff ? '' ( PDF ). 44th Lunar and Planetary Science Conference. p. 1598. Retrieved 2013 - 05 - 21. Jump up ^ Diane Ainsworth. `` RADAR IMAGES CAPTURE BIG, SLOWLY TUMBLING ASTEROID ''. NASA / JPL Media Relations Office. Retrieved 2014 - 05 - 01. Jump up ^ Tedesco, Edward ; Metcalfe, Leo ( April 4, 2002 ). `` New study reveals twice as many asteroids as previously believed '' ( Press release ). European Space Agency. Retrieved 2009 - 10 - 20. Jump up ^ Asteroid Data Archive, Archive Planetary Science Institute Jump up ^ `` NASA Radar Images Asteroid 2007 PA8 ''. Jump up ^ Chamberlin, Alan. `` JPL Small - Body Database Browser ''. Jump up ^ `` Minor Planet No. 100,000 Named for Space Age 50th Anniversary ''. Jump up ^ Alan Chamberlin. `` JPL Small - Body Database Browser ''. Ssd.jpl.nasa.gov. Archived from the original on 2011 - 02 - 12. Retrieved 2011 - 01 - 04. Jump up ^ Lisse, C.M. ; Fernandez ; Reach ; Bauer ; A'Hearn ; Farnham ; et al. ( 2009 ). `` Spitzer Space Telescope Observations of the Nucleus of Comet 103P / Hartley 2 ''. Publications of the Astronomical Society of the Pacific. 121 ( 883 ) : 968 -- 975. Bibcode : 2009PASP... 121... 968L. JSTOR 10.1086 / 605546. arXiv : 0906.4733. doi : 10.1086 / 605546. Jump up ^ Whitman, Kathryn ; Alessandro Morbidelli & Robert Jedicke ( 2006 ). `` The Size - Frequency Distribution of Dormant Jupiter Family Comets ''. Icarus. 183 : 101 -- 114. Bibcode : 2006Icar... 183... 101W. arXiv : astro - ph / 0603106. doi : 10.1016 / j. icarus. 2006.02. 016. Jump up ^ `` JPL Small - Body Database Browser : 14827 Hypnos ( 1986 JK ) ''. Archived from the original on 2011 - 02 - 12. Retrieved 2008 - 02 - 08. Jump up ^ Benner, et al. -- Radar Detection of Near - Earth Asteroids 2062 Aten, 2101 Adonis, 3103 Eger, 4544 Xanthus, and 1992 QN ( 1997 ) Archived 2016 - 03 - 03 at the Wayback Machine. Jump up ^ Alan Chamberlin. `` JPL Small - Body Database Browser ''. Ssd.jpl.nasa.gov. Archived from the original on 2011 - 02 - 12. Retrieved 2011 - 01 - 04. ^ Jump up to : Based on an assumed density of 2.6 g / cm as given at the NASA NEO impact risk page `` Archived copy ''. Archived from the original on February 12, 2011. Retrieved 2015 - 11 - 29. Jump up ^ BBC -- Giant asteroid passes near Earth -- 9 November 2011 Jump up ^ Chamberlin, Alan. `` JPL Small - Body Database Browser ''. Jump up ^ M.W. Busch ; et al. ( March 31, 2012 ). `` Shape and Spin of Near - Earth Asteroid 308635 ( 2005 YU55 ) From Radar Images and Speckle Tracking '' ( PDF ). LPI. Retrieved 9 April 2012. Jump up ^ Alan Chamberlin. `` JPL Small - Body Database Browser ''. Ssd.jpl.nasa.gov. Archived from the original on 2011 - 02 - 12. Retrieved 2011 - 01 - 04. Jump up ^ ESA ( January 9, 2013 ). `` Herschel intercepts asteroid Apophis ''. European Space Agency ( ESA ). Retrieved 2013 - 01 - 09. Jump up ^ `` NASA Scientists Get First Images of Earth Flyby Asteroid ''. NASA / JPL. 2008 - 01 - 25. Archived from the original on 2011 - 02 - 12. Retrieved 2008 - 01 - 26. Jump up ^ NASA -- 1994 WR12 Earth Impact Risk Summary -- 2011 ^ Jump up to : 2009 FD Impact Risk Archived January 11, 2011, at the Wayback Machine. ^ Jump up to : BBC News -- Record spin for newfound asteroid ( 2008 ) Archived February 12, 2011, at WebCite Jump up ^ Alan Chamberlin. `` JPL Small - Body Database Browser ''. Ssd.jpl.nasa.gov. Archived from the original on 2011 - 02 - 12. Retrieved 2011 - 01 - 04. Further reading NASA Planetary Data System ( PDS ) Asteroids with Satellites Minor Planet discovery circumstances Supplemental IRAS Minor Planet Survey ( SIMPS ) and IRAS Minor Planet Survey ( IMPS ) SIMPS & IMPS ( V6, additional, from here ) Asteroid Data Archive ( dead link ) Archive Planetary Science Institute External links Planetary fact sheets Asteroid fact sheet All ( known ) Bodies in the Solar System Larger than 200 Miles in Diameter -- in an image, put side - by - side. Size comparison of asteroids and comets visited by space probe ( Parent article of image at The Planetary Society ) Scaled Solar System montage at TPS Blog The Solar System The Sun Mercury Venus Earth Mars Ceres Jupiter Saturn Uranus Neptune Pluto Haumea Makemake Eris Planets Terrestrial planets Mercury Venus Earth Mars Giant planets Jupiter Saturn Uranus Neptune Dwarf planets Ceres Pluto Haumea Makemake Eris Rings Jovian Saturnian ( Rhean ) Charikloan Chironean Uranian Neptunian Haumean Moons 1 Terrestrial ( Moon ) Other near - Earth objects 2 Martian Phobos Deimos 69 Jovian Ganymede Callisto Io Europa all 62 Saturnian Titan Rhea Iapetus Dione Tethys Enceladus Mimas Hyperion Phoebe all 27 Uranian Titania Oberon Umbriel Ariel Miranda all 14 Neptunian Triton Proteus Nereid all 5 Plutonian Charon Nix Hydra Kerberos Styx 2 Haumean Hiʻiaka Namaka 1 Makemakean ( S / 2015 ( 136472 ) 1 ) 1 Eridian ( Dysnomia ) Lists Solar System objects By size By discovery date Minor planets Gravitationally rounded objects Possible dwarf planets Natural satellites Comets Small Solar System bodies Meteoroids Minor planets moons Comets Damocloids Mercury - crossers Venus - crossers Venus trojans Near - Earth objects Earth - crossers Earth trojans Mars - crossers Mars trojans Asteroid belt Asteroids first discovered : Ceres Pallas Juno Vesta Families Notable asteroids Kirkwood gap Main - belt comets Jupiter trojans Jupiter - crossers Centaurs Saturn - crossers Uranus trojans Uranus - crossers Neptune trojans Cis - Neptunian objects Trans - Neptunian objects Neptune - crossers Plutoids Kuiper belt Plutinos Cubewanos Scattered disc Detached objects Sednoids Hills cloud Oort cloud Hypothetical objects Vulcan Vulcanoids Phaeton Planet V Theia Fifth giant Planets beyond Neptune Tyche Nemesis Planet Nine Exploration ( outline ) Discovery Astronomy Timeline Spaceflight Robotic spacecraft Human spaceflight Colonization List of probes Timeline Mercury Venus Moon Mars Ceres Asteroids Mining Comets Jupiter Saturn Uranus Neptune Pluto Deep space Outline of the Solar System Portals Solar System Astronomy Earth sciences Mars Jupiter Uranus Cosmology Solar System → Local Interstellar Cloud → Local Bubble → Gould Belt → Orion Arm → Milky Way → Milky Way subgroup → Local Group → Virgo Supercluster → Laniakea Supercluster → Pisces -- Cetus Supercluster Complex → Observable universe → Universe Each arrow ( → ) may be read as `` within '' or `` part of ''. Retrieved from `` https://en.wikipedia.org/w/index.php?title=List_of_Solar_System_objects_by_size&oldid=807333248 '' Categories : Lists of Solar System objects Hidden categories : CS1 maint : Multiple names : authors list All articles with dead external links Articles with dead external links from September 2017 Articles with permanently dead external links Articles with dead external links from November 2016 Webarchive template webcite links Webarchive template wayback links All articles with unsourced statements Articles with unsourced statements from July 2015 Articles with unsourced statements from December 2016 Talk Contents About Wikipedia Беларуская Български Boarisch Deutsch Euskara فارسی 한국어 Hrvatski Italiano Latina Bahasa Melayu 日本 語 Norsk Polski Português Русский Scots Slovenščina Tagalog Українська Tiếng Việt 中文 Edit links This page was last edited on 27 October 2017, at 09 : 08. Text is available under the Creative Commons Attribution - ShareAlike License ; additional terms may apply. By using this site, you agree to the Terms of Use and Privacy Policy. Wikipedia ® is a registered trademark of the Wikimedia Foundation, Inc., a non-profit organization. About Wikipedia

Question: largest moon in the solar system compared to earth
Answer: Ganymede