# List of smallest known stars

This is a list of stars, neutron stars, white dwarfs and brown dwarfs which are the least voluminous known (the smallest stars by volume).

## List
### Notable small stars

This is a list of small stars that are notable for characteristics that are not separately listed.
| Star name | Star mean radius, kilometres | Star class | Notes |
| SGR 1935+2154 | 4.35 | soft gamma repeater | |
| RX J0720.4−3125 | 4.50+0.08 −0.09 – 5.38+0.13 −0.14 | Neutron star | Neutron stars are stellar remnants produced when a star of around 8–9 solar masses or more explodes in a supernova at the end of its life. They are usually produced by stars of less than 20 solar masses, although a more massive star may produce a neutron star in certain cases. |
| 4U 1820-30 | 9.1 | Pulsar | |
| Lich Pulsar (PSR B1257+12) | 10 | Pulsar | Orbited by three planets. |
| Crab Pulsar (PSR B0531+21) | 10 | Pulsar | Relatively young at 7200 (or 970 relative to Earth) years old as of May 2024. |
| Geminga | 10 | Pulsar | |
| XTE J1739-285 | 10.9 | Pulsar (quark star?) | |
| PSR J1906+0746 | 11.99 – 12.85 | Pulsar | |
| PSR J2043+1711 | 12.13 – 12.96 | Pulsar | |
| PSR J1933–6211 | 12.15 – 12.98 | Pulsar | |
| Vela pulsar | 12.52 – 13.30 | Pulsar | |
| PSR J0348+0432 A | 13 ± 2 | Pulsar | Orbited by a white dwarf star (see below) |
| PSR J1614−2230 | 13 ± 2 | Pulsar | |
| GX 13+1 | ≲14.50 | Neutron star | |
| PSR J1748-2446ad | <16 | Pulsar | Fastest-spinning pulsar known. |
| RX J1856.5−3754 | 19 | Neutron star | Closest neutron star discovered to date. |
| PSR B1620-26 | 24 | Pulsar | An exoplanet orbits PSR B1620-26 and its white dwarf companion (see below) in a circumbinary orbit. |
| HD 49798 | 1,600 | White dwarf | One of the smallest white dwarf stars known. |
| ZTF J1901+1458 | 1,809 | White dwarf | Currently the most massive white dwarf known. |
| Janus | 3,400 | White dwarf | A white dwarf with a side of hydrogen and another side of helium. |
| Wolf 1130 B | 3,480 | White dwarf | |
| IK Pegasi B | 4,174 | White dwarf | The nearest supernova candidate. (Type Ia) |
| Sirius B | 5,466 | White dwarf | Historically first detected white dwarf star |
| LB 1497 | 5,494.5 | White dwarf | |
| 40 Eridani B | 5,547.5 | White dwarf | |
| U Geminorum white dwarf | 5,565 | White dwarf | |
| BPM 37093 | 5,750 | White dwarf | |
| Gliese 742 (GRW +70 8247) | 5,950 | White dwarf | |
| Gliese 915 (WD 2359-434) | 6,748.3 | White dwarf | |
| AE Aquarii A | 6,950 | White dwarf | |
| AR Scorpii | 6,950 | White dwarf | |
| G 29-38 | 6,950 | White dwarf | |
| LP 145-141 | 6,950 | White dwarf | 4th nearest white dwarf. |
| WD B1620−26 (PSR B1620-26 B) | 6,950 | White dwarf | An exoplanet orbits WD B1620−26 and its pulsar companion (see above) in a circumbinary orbit. |
| Van Maanen's Star (Van Maanen 2) | 6,950 | White dwarf | 3rd nearest white dwarf. |
| WD 0810–353 | 6,950 | White dwarf | |
| YZ Leonis Minoris A | 6,950 | White dwarf | |
| QS Virginis A | 7,658 | White dwarf | |
| Stein 2051 B | 7,930 | White dwarf | |
| Ross 548 (ZZ Ceti) | 8,209 | White dwarf | |
| CR Boötis A | 8,350 | White dwarf | |
| DQ Herculis A | 8,420 | White dwarf | A slow, bright nova that reached peak brightness on 22 December 1934 with an apparent magnitude of 1.5. |
| Procyon B | 8,595 | White dwarf | Second nearest white dwarf. |
| GD 165 A | 8,626.5 | White dwarf | |
| ESO 439-26 | 8,775.5 | White dwarf | Faintest known white dwarf. |
| Gliese 293 | 8,900 | White dwarf | |
| Wolf 489 | 9,044 | White dwarf | |
| HD 44120 C | 9,044 | White dwarf | |
| WD 1856+534 | 9,113.67 | White dwarf | |
| Epsilon Reticuli B | 9,185 | White dwarf | |
| KOI-256 B | 9,350 | White dwarf | |
| RR Caeli white dwarf | 10,908.5 | White dwarf | |
| WD 1145+017 | 13,926.84 | White dwarf | Host star of one of the smallest exoplanets. |
| NN Serpentis white dwarf | 14,679.5 | White dwarf | |
| Beta Crateris B | 18,800 | White dwarf | |
| Feige 55 | 19,450 | White dwarf | |
| Central star of the Dumbbell Nebula | 38,265 | White dwarf | |
| KPD 0005+5106 | 41,045 | White dwarf | |
| PSR J0348+0432 B | 45,268 | White dwarf | A white dwarf that orbits its pulsar companion (see above) |
| TMTS J052610.43+593445.1 | 45,916 | B-type subdwarf | Smallest known non-degenerate star. |
| WISEA 1810−1010 | 46,840 | Brown dwarf | Smallest known brown dwarf. |
| EPIC 201702477 [fr] | 54,120 | Brown dwarf | |
| BE Ursae Majoris A | 54,250 | O-type subdwarf | |
| LP 40-365 | 54,250 | White dwarf | A white dwarf that might have formed in a type Iax supernova. Range of values of 40,350 to 82,095 km |
| Epsilon Indi Ba | 55,656 | Brown dwarf | |
| LHS 6343 C | 55,978 | Brown dwarf | |
| Epsilon Indi Bb | 57,050 | Brown dwarf | |
| 54 Piscium B | 57,050 | Brown dwarf | |
| 2MASS J1126−5003 | 57,193.5 | Brown dwarf | |
| UGPS J0521+3640 | 57,193.5 | Brown dwarf | |
| Wolf 1130 C | 58,625 | Brown dwarf | |
| Gliese 570 D | 59,350 to 66,090 | Brown dwarf | |
| EBLM J0555-57Ab | 60,000 | Red dwarf | This red dwarf has a size comparable to that of the planet Saturn. As of 2019, it is the second lightest hydrogen-fusing star known, marginally heavier (0.0777-0.0852M$_☉$) than the 2MASS J0523-1403. Although its mass is comparable to that of TRAPPIST-1, its radius is 1/3 smaller. |
| Luhman 16 A | 60,768 | Brown dwarf | Luhman 16 A and Luhman 16 B are the closest brown dwarf stars to Earth, and the third-nearest star system to the Solar System. |
| SSSPM J0829-1309 | 61,300 | Red dwarf | An L2 dwarf that is fusing hydrogen. Similarly to 2MASS J0523-1403, SSSPM J0829-1309 is one of the least luminous and massive hydrogen-fusing stars, and is smaller than Jupiter. |
| WISE 1405+5534 | 61,483 | Brown dwarf | |
| 2MASS 0939-2448 B | 62,600 | Brown dwarf | |
| WISE 0855−0714 | 63,500 | Brown dwarf | Coolest known brown dwarf. |
| 2MASS 0243−2453 | 64,000 | Brown dwarf | |
| W1906+40 | 64,350 | Brown dwarf | In 2015 it was shown to have on its surface a storm the size of Jupiter's Great Red Spot. |
| 2MASS J0348−6022 | 64,700 | Brown dwarf | |
| SDSS J1416+1348 A | 65,772.5 | Brown dwarf | |
| WISEPC J205628.90+145953.3 | 66,487.5 | Brown dwarf | |
| WISE 1738+2732 | 66,487.5 | Brown dwarf | |
| SCR 1845−6357 A | 66,790 | Red dwarf | |
| 2MASS 0937+2931 | 67,200 | Brown dwarf | |
| WISE 0359−5401 | 67,200 | Brown dwarf | In June 2023, it became the first Y-dwarf with a spectral energy distribution measured by the James Webb Space Telescope. |
| 2MASS J22282889–4310262 | 67,200 | Brown dwarf | |
| SDSS J1416+1348 B | 67,200 | Brown dwarf | |
| DENIS J081730.0−615520 | 67,200 | Brown dwarf | |
| WISE 2150–7520 B | 67,900 | Brown dwarf | |
| Kelu-1 B | 67,900 | Brown dwarf | |
| Kelu-1 A | 68,180 | Brown dwarf | |
| LHS 1070 C | 68,180 | Brown dwarf | Certainly a brown dwarf based on its mass |
| DENIS 0255−4700 | 69,570 | Brown dwarf | |
| R Aquarii B | 69,570 | White dwarf | Part of a symbiotic binary star system containing a red giant and a white dwarf. |
| HD 114762 B | 69,570 | Red dwarf | |
| 2MASS J0407+1546 | 69,570 | Brown dwarf | |
| HN Pegasi B | 70,265 | Brown dwarf | |
| 2MASS J0523-1403 | 70,600 | Red dwarf | As in 2019, with mass 67.54±12.79M$_J$ (0.0523-0.0767M$_☉$) is the lowest known mass hydrogen-burning star. |
| GD 165 B | 71,492 | Brown dwarf | |
| 15 Sagittae B | 71,492 | Brown dwarf | |
| DENIS-P J1058.7−1548 | 71,492 | Brown dwarf | |
| LHS 2924 | 71,657 | Red dwarf | |
| 2MASS 0036+1821 | 72,200 | Brown dwarf | |
| CoRoT-3 b | 72,200 | Brown dwarf | |
| LHS 1070 B | 72,350 | Brown dwarf | Likely a brown dwarf based on its mass |
| UGPS 0722-05 | 72,850 | Brown dwarf | Possibly a rogue planet |
| WISE 2150–7520 A | 73,635 | Brown dwarf | |
| Luhman 16 B | 74,350 | Brown dwarf | Luhman 16 B and Luhman 16 A are the closest brown dwarf stars to Earth, and the third-nearest star system to the Solar System. |
| DENIS J1048−3956 | 75,135.5 | Red dwarf | |
| DX Cancri | 76,527 | Red dwarf | |
| LHS 292 | 76,527 | Red dwarf | |
| TVLM 513-46546 | 76,527 | Red dwarf | Has one confirmed exoplanet |
| Gliese 229 B | 79,000 | Brown dwarf | |
| HR 2562 B | 79,350 | Brown dwarf | Its mass is quite uncertain, at 29±15 M$_J$ . It is cited by the NASA Exoplanet Archive as the most massive exoplanet known. |
| KELT-1 B | 79,350 | Brown dwarf | |
| OGLE-TR-122B | 81,100 | Red dwarf | This was once the smallest known actively fusing star, when found in 2005, through 2013. It is the smallest eclipsing red dwarf, and smallest observationally measured diameter. |
| CoRoT-15b | 82,200 | Brown dwarf | |
| VB 10 | 82,300 | Red dwarf | It was the smallest known star from 1948 to 1981. |
| TRAPPIST-1 | 82,925 | Red dwarf | Hosts a planetary system with at least seven rocky planets. |
| LHS 2090 | 83,500 | Red dwarf | |
| Teegarden's Star | 83,500 | Red dwarf | Has two potentially habitable planets. |
| VB 8 | 84,450 | Red dwarf | |
| SPECULOOS-3 | 85,570 | Red dwarf | Second-smallest star known to host a transiting exoplanet after TRAPPIST-1 |
| 2MASS 0939-2448 A | 87,220 | Brown dwarf | |
| Teide 1 | 88,130 | Brown dwarf | The first brown dwarf to be verified, in 1995. |
| Gliese 412 B | 90,400 | Red dwarf | |
| CFBDSIR 1458+10 B | 90,450 | Brown dwarf | |
| CWISE J124909.08+362116.0 | 93,200 | Red dwarf | A high-velocity star travelling the Milky Way at 456 km/s. |
| Gliese 1002 | 95,310 | Red dwarf | Has two confirmed exoplanets |
| LHS 1070 A | 97,400 | Red dwarf | |
| LHS 3154 | 97,400 | Red dwarf | Has one confirmed exoplanet |
| Wolf 424 B | 97,400 | Red dwarf | |
| Wolf 359 | 100,180.8 | Red dwarf | Fifth-nearest star system to the Solar System. Has one unconfirmed exoplanet |
| NN Serpentis red dwarf | 103,660 | Red dwarf | |
| CFBDSIR 1458+10 A | 104,350 | Brown dwarf | |
| NY Virginis A | 105,050 | B-type subdwarf | |
| Gliese 1061 | 105,746.4 | Red dwarf | Has three confirmed exoplanets, two of them are in the habitable zone. |
| LP 890-9 | 106,580 | Red dwarf | Has two confirmed exoplanets, one of them (LP 890-9c) is in the habitable zone. |
| Proxima Centauri (Alpha Centauri C) | 107,277 | Red dwarf | Nearest star and nearest stellar system to the Sun. Has one confirmed potentially habitable exoplanet, one unconfirmed exoplanet and one disputed exoplanet |
| Luyten 726-8 B (UV Ceti) | 110,615 | Red dwarf | The archetypal type of the flare stars, and the eight-nearest star system to the Solar System. |
| GL Virginis | 111,300 | Red dwarf | |
| NY Virginis B | 111,300 | Red dwarf | |
| TZ Arietis | 112,000 | Red dwarf | Has one confirmed exoplanet |
| HD 984 B | 112,700 | Brown dwarf | |
| Luyten 726-8 A (BL Ceti) | 114,790 | Red dwarf | Luyten 726-8 A and B are the eight-nearest star system to the Solar System. |
| YZ Ceti | 116,877.5 | Red dwarf | Has three confirmed exoplanets |
| LP 791-18 (TOI-736) | 118,270 | Red dwarf | Has three confirmed exoplanets |
| HR 858 B | 118,270 | Red dwarf | |
| UY Sextantis | 118,270 | B-type subdwarf | |
| Wolf 424 A | 118,270 | Red dwarf | |
| Z Andromedae B | 118,270 – 250,450 | White dwarf | |
| Kepler-42 | 121,750 | Red dwarf | Has three confirmed exoplanets |
| EZ Aquarii A (Luyten 789-6 A) | 121,750 | Red dwarf | |
| HW Virginis B | 121,835 | Red dwarf | |
| Gliese 1151 | 123,900 | Red dwarf | Has one confirmed exoplanet |
| AB Doradus C | 124,100 | Red dwarf | Very low-mass star (0.09 M$_☉$) |
| GQ And (Groombridge 34 B) | 125,200 | Red dwarf | |
| Wolf 1069 | 126,130 | Red dwarf | Has one confirmed potentially habitable exoplanet |
| HW Virginis A | 127,404.6 | B-type subdwarf | |
| Gliese 3323 | 129,539.5 | Red dwarf | Has two confirmed exoplanets |
| Barnard's Star | 130,100 | Red dwarf | The star with the highest proper motion, and the second-nearest star system to the Solar system. Has a planet, Barnard's Star b / Barnard b. |
| Batsũ̀ (LHS 3844) | 131,500 | Red dwarf | Has one confirmed exoplanet |
| Ross 248 | 132,200 | Red dwarf | Tenth-nearest star system to the Solar System. |
| Gliese 1128 | 132,200 | Red dwarf | |
| Alpha Mensae B | 132,200 | Red dwarf | |
| WD 2134−125, central star of NGC 7094 [fr] | 134,000 | White dwarf | |
| Ross 128 | 136,844 | Red dwarf | Has one confirmed potentially habitable exoplanet |
| LTT 1445 C | 137,050 | Red dwarf | |
| Ross 154 | 139,140 | Red dwarf | Ninth-nearest star system to our Solar System. |
| Gliese 1062 | 141,000 | Red dwarf | Other sources cites 258,800 km (0.372 R$_☉$) and 285,935 km (0.411 R$_☉$) |
| Kepler-70 | 141,225 | B-type subdwarf | Has two unconfirmed exoplanets, which may be the hottest exoplanets known. |
| RR Caeli red dwarf | 141,225 | Red dwarf | |
| Gliese 1214 | 141,922 | Red dwarf | Has a confirmed exoplanet |
| Gliese 754 | 142,618.5 | Red dwarf | |
| LHS 1140 | 142,618.5 | Red dwarf | Has two confirmed exoplanets |
| EZ Aquarii B (Luyten 789-6 B) | 146,100 | Red dwarf | |
| Gliese 1132 | 149,575 | Red dwarf | Has two confirmed exoplanets |
| LSR J1835+3259 | 150,133 | Brown dwarf | |
| CT Chamaeleontis B (CT Cha B) | 157,300 | Brown dwarf | Either planet or brown dwarf |
| Fomalhaut C | 160,000 | Red dwarf | |
| V391 Pegasi | 160,000 | B-type subdwarf | Has one exoplanet candidate |
| Kepler-1649 | 161,400 | Red dwarf | Has two confirmed exoplanets |
| LTT 1445 B | 164,185 | Red dwarf | |
| CM Draconis B (CM Dra B) | 166,700 | Red dwarf | |
| Kepler-429 | 167,000 | B-type subdwarf | Has three exoplanet candidates |
| Kruger 60 B | 167,000 | Red dwarf | |
| Ross 695 | 167,000 | Red dwarf | |
| TOI-715 | 167,000 | Red dwarf | Has one confirmed, potentially habitable exoplanet |
| 2M1207 A | 173,925 | Brown dwarf | Has one confirmed exoplanet |
| CM Draconis A (CM Dra A) | 176,000 | Red dwarf | |
| DG Canum Venaticorum | 176,000 | Red dwarf | |
| Gliese 625 | 177,400 | Red dwarf | |
| Gliese 12 | 182,065 | Red dwarf | Has one known exoplanet |
| AM Herculis red dwarf | 180,882 | Red dwarf | |
| 55 Cancri B | 186,447.5 | Red dwarf | |
| LTT 1445 A | 188,500 | Red dwarf | Has three confirmed exoplanets, one of them is in the habitable zone |
| Struve 2398 B | 189,925 | Red dwarf | |
| Gliese 105 B (268 G. Ceti B) | 193,405 | Red dwarf | |
| LHS 475 | 194,030.5 | Red dwarf | Has one confirmed exoplanet |
| HR 7703 B | 194,800 | Red dwarf | |
| Gliese 445 | 198,275 | Red dwarf | |
| Mu Cassiopeiae Ab | 201,750 | Red dwarf | |
| Kapteyn's Star | 202,448.7 | Red dwarf | This is the closest halo star to the Sun. |
| Stein 2051 A | 203,150 | Red dwarf | |
| HN Librae | 208,000 | Red dwarf | Has one confirmed planet and one unconfirmed |
| Gliese 402 | 208,700 | Red dwarf | |
| L 98-59 | 210,800 | Red dwarf | Has four confirmed exoplanets and one unconfirmed |
| Gliese 581 | 215,650 | Red dwarf | Has three confirmed exoplanets |
| 40 Eridani C | 215,650 | Red dwarf | |
| Wolf 1061 | 221,900 | Red dwarf | Has three confirmed exoplanets |
| Gliese 3929 | 222,600 | Red dwarf | Has two confirmed exoplanets |
| Xi Ursae Majoris Ab | 222,600 | Red dwarf | |
| Kepler-296 B | 224,000 | Red dwarf | |
| YZ Canis Minoris | 225,400 | Red dwarf | |
| LHS 1678 | 228,285 | Red dwarf | Has three known exoplanets |
| Wolf 437 (Gar) | 228,190 | Red dwarf | Has one confirmed exoplanet |
| Gliese 1 | 229,580 | Red dwarf | |
| Wolf 1130 A | 229,580 | Red dwarf | |
| Gliese 357 | 231,650 | Red dwarf | Has three confirmed exoplanets |
| Gliese 667 C | 231,650 | Red dwarf | Has two confirmed exoplanets |
| Kepler-47 B | 235,150 | Red dwarf | There are three exoplanets orbiting Kepler-47 B and its companion, Kepler-47 A, in a circumbinary orbit. |
| Luyten's Star (Gliese 273) | 243,500 | Red dwarf | Has two confirmed exoplanets and other two unconfirmed |
| Kruger 60 A | 243,500 | Red dwarf | |
| Struve 2398 A | 246,300 | Red dwarf | |
| EV Lacertae | 250,500 | Red dwarf | On 25 April 2008, a record-setting stellar flare was observed on its surface by NASA's Swift, that was thousands of times more powerful than any solar flare. |
| Theta Cygni B | 250,500 | Red dwarf | |
| Gliese 251 | 253,235 | Red dwarf | Has one confirmed exoplanet |
| DT Virginis B (Ross 458) | 256,000 | Red dwarf | |
| AT Microscopii B (AT Mic B) | 257,400 | Red dwarf | |
| Regulus C | 257,400 | Red dwarf | |
| Gliese 876 (Ross 780) | 258,800 | Red dwarf | Has four confirmed exoplanets |
| LHS 6343 A (KOI-959 A) | 259,495 | Red dwarf | |
| LTT 3780 (TOI-732) | 260,190 | Red dwarf | Has two confirmed exoplanets |
| TOI-270 | 263,000 | Red dwarf | Has three confirmed exoplanets |
| Gliese 412 A | 264,400 | Red dwarf | |
| KIC 4150611 Ab2 | 264,400 | Red dwarf | |
| GX And (Groombridge 34 A) | 267,800 | Red dwarf | Has two confirmed exoplanets |
| L 34-26 | 270,000 | Red dwarf | It hosts the exoplanet with the longest known orbital period, COCONUTS-2b, which takes about 1.1 million years to complete an orbit around its star. |
| Gliese 908 (BR Piscium) | 271,323 | Red dwarf | |
| Gliese 1252 | 272,000 | Red dwarf | Has one confirmed exoplanet, an ultra-short-period planet with a daytime temperature measured at 1140 °C. |
| Sharjah (HIP 79431) | 272,000 | Red dwarf | Has one confirmed exoplanet. Other sources cites radius of 307,500 km (0.442 R$_☉$) and 375,680 km (0.54 R$_☉$) |
| Lalande 21185 | 273,500 | Red dwarf | Sixth-nearest star system to the Solar System. Has two confirmed exoplanets and one unconfirmed |
| LHS 6343 B | 274,100 | Red dwarf | |
| Gliese 22 B | 274,100 | Red dwarf | |
| Gliese 179 | 278,300 | Red dwarf | Has two confirmed exoplanets |
| HIP 57050 | 278,300 | Red dwarf | Has two confirmed exoplanets |
| KOI-4777 | 278,300 | Red dwarf | Has one confirmed exoplanet |
| Gliese 163 | 284,550 | Red dwarf | Has five confirmed exoplanets |
| AT Microscopii A (AT Mic A) | 285,250 | Red dwarf | |
| Gliese 588 | 292,200 | Red dwarf | |
| Gliese 686 | 292,200 | Red dwarf | Has a confirmed exoplanet |
| KIC 4150611 Ab1 | 292,200 | Red dwarf | |
| TOI 700 | 292,200 | Red dwarf | Has four confirmed exoplanets |
| QS Virginis B | 292,404 | Red dwarf | |
| Gliese 180 | 294,211.5 | Red dwarf | Has two confirmed exoplanets |
| AD Leonis (Gliese 388) | 294,500 | Red dwarf | |
| Gliese 408 | 299,150 | Red dwarf | |
| Gliese 3634 | 299,150 | Red dwarf | Has a confirmed exoplanet |
| Gliese 569 A | 299,150 | Red dwarf | |
| U Geminorum red dwarf | 299,150 | Red dwarf | |
| Gliese 436 | 300,542 | Red dwarf | Has a confirmed exoplanet |
| Sigma Coronae Borealis C | 304,000 | Red dwarf | |
| HD 260655 (TOI-4599) | 305,400 | Red dwarf | Has two confirmed exoplanets |
| WR 93b | 306,108 | Wolf-Rayet | |
| Gliese 832 | 307,500 | Red dwarf | Has two exoplanets |
| Gliese 877 | 307,500 | Red dwarf | |
| Gliese 393 | 310,212.5 | Red dwarf | |
| Tabby's Star B (KIC 8462852 B) | 313,065 | Red dwarf | |
| Añañuca (Gliese 367) | 317,935 | Red dwarf | Has three confirmed exoplanets |
| Gliese 849 | 322,800 | Red dwarf | Has two confirmed exoplanets |
| K2-18 (EPIC 201912552) | 326,300 | Red dwarf | Has two confirmed exoplanets |
| Gliese 521 | 327,000 | Red dwarf | |
| BAT99-123 (Brey 93) | 327,000 | Wolf-Rayet | First WO star discovered in the Large Magellanic Cloud. |
| Lacaille 9352 (Gliese 887) | 329,750 | Red dwarf | Has two confirmed exoplanets and one unconfirmed |

### Smallest stars by type

List of the smallest stars by star type :
| Type | Star name | Radius Solar radii (Sun = 1) | Radius Jupiter radii (Jupiter = 1) | Radius Earth radii (Earth = 1) | Radius (km / mi) | Date | Notes |
| Red dwarf | EBLM J0555-57Ab | 0.084 | 0.84 | 9.41 | 60,000 km (37,000 mi) | 2017 | The red dwarf stars are considered the smallest stars known, and representative of the smallest star possible. |
| Brown dwarf | WISEA 1810−1010 | 0.067 | 0.655 | 7.29 | 46,840 km (29,110 mi) | | Brown dwarfs are not massive enough to build up the pressure in the central regions to allow nuclear fusion of hydrogen into helium. They are best described as extremely massive gas giants that were not able to ignite into a hydrogen-fusing star. |
| White dwarf | HD 49798 | 0.0023 | 0.023 | 0.25 | 1,600 km (990 mi) | 2021 | White dwarfs are stellar remnants produced when a star with around 8 solar masses or less sheds its outer layers into a planetary nebula. The leftover core becomes the white dwarf. It is thought that white dwarfs cool down over quadrillions of years to produce a black dwarf. |
| Neutron star | RX J0720.4−3125 | 0.0000064683 – 0.0000077332 | 0.00006294 – 0.00007525 | 0.0007055 – 0.0008435 | 4.50+0.08 −0.09 – 5.38+0.13 −0.14 | 2012 | Neutron stars are stellar remnants produced when stars with around 9 solar masses or more explode in supernovae at the ends of their lives. They are usually produced by stars with less than 20 solar masses, although a more massive star may produce a neutron star in certain cases. |

### Timeline of smallest red dwarf star recordholders

Red dwarfs are considered the smallest star known that are active fusion stars, and are the smallest stars possible that is not a brown dwarf.
List of smallest red dwarf titleholders :
| Star name | Date | Radius Solar radii (Sun = 1) | Radius Jupiter radii (Jupiter = 1) | Radius km (mi) | Notes |
| EBLM J0555-57Ab | 2017- | 0.084 | 0.84 | 60,000 km (37,000 mi) | This star has a size comparable to that of Saturn. |
| 2MASS J0523-1403 | 2013-2017 | 0.102 | 1.01 | 70,600 km (43,900 mi) | Lowest mass main sequence star as of 2020. |
| OGLE-TR-122B | 2005-2013 | 0.117 | 1.16 | 81,100 km (50,400 mi) | |