88 modern constellations by area

The International Astronomical Union (IAU) names 88 constellations of stars. In the table below, they are ranked by the solid angle that they subtend in the sky, measured in square degrees and millisteradians.
These solid angles depend on borders between the constellations: the list below is based on constellation borders drawn up by Eugène Delporte in 1930 for the IAU and published in Délimitation scientifique des constellations (Cambridge University Press). Before Delporte's work, there was no standard list of the borders of each constellation.

Delporte drew the borders along vertical and horizontal lines of right ascension and declination; however, he did so for the epoch B1875.0, which means that due to precession of the equinoxes, the borders on a modern star map (e.g., for epoch J2000) are already somewhat distorted and no longer perfectly vertical or horizontal.  This distortion will increase over the centuries to come. However, this does not change the solid angle of any constellation.
RankAbbrev.ConstellationSolid angle("Area")(sq. deg.) The total solid angle of all constellations is the total solid angle of the sky, which is exactly 4π steradians, or 4π × (180/π)2 = 129,600/π square degrees, or approximately 41,252.961 square degrees. The figures in the table do not sum precisely to this number due to rounding errors, which vanish when the areas are rounded instead to one decimal place.Solid angle(millisteradians)Per­cent­ageRight ascension(hours & mins) Average of the most eastward and most westward RA.Decli­nation(degs & mins) Average of the most northern and most southern declination.Quad "Quad" names the quadrant of the sky as N for North or S for South, Quadrants 1 (–), 2 (–), 3 (–), or 4 (–).01HyaHydra1302.844396.8693.16% +11 36.73−14 31.91SQ202VirVirgo1294.428394.3053.14% +13 24.39−04 09.51SQ303UMaUrsa Major1279.660389.8073.10% +11 18.76 +50 43.27NQ204CetCetus1231.411375.1092.99% +01 40.10−07 10.76SQ105HerHercules1225.148373.2012.97% +17 23.16 +27 29.93NQ306EriEridanus1137.919346.6302.76% +03 18.02−28 45.37SQ107PegPegasus1120.794341.4132.72% +22 41.84 +19 27.98NQ408DraDraco1082.952329.8862.63% +15 08.64 +67 00.40NQ309CenCentaurus1060.422323.0232.57% +13 04.27−47 20.72SQ310AqrAquarius979.854298.4812.38% +22 17.38−10 47.35SQ411OphOphiuchus948.340288.8812.30% +17 23.69−07 54.74SQ312LeoLeo946.964288.4622.30% +10 40.03 +13 08.32NQ213BooBoötes906.831276.2372.20% +14 42.64 +31 12.16NQ314PscPisces889.417270.9322.16% +00 28.97 +13 41.23NQ115SgrSagittarius867.432264.2352.10% +19 05.94−28 28.61SQ416CygCygnus803.983244.9071.95% +20 35.28 +44 32.70NQ417TauTaurus797.249242.8561.93% +04 42.13 +14 52.63NQ118CamCamelopardalis756.828230.5431.83% +08 51.37 +69 22.89NQ219AndAndromeda722.278220.0181.75% +00 48.46 +37 25.91NQ120PupPuppis673.434205.1401.63% +07 15.48−31 10.64SQ221AurAuriga657.438200.2671.59% +06 04.42 +42 01.68NQ222AqlAquila652.473198.7551.58% +19 40.02 +03 24.65NQ423SerSerpensSerpens is divided into two parts:  Serpens Caput ("Serpent's Head"; 428.484 sq. deg.; midpoint: RA: 15 46.49, Dec: +10 58.20), and  Serpens Cauda ("Serpent's Tail"; 208.444 sq. deg.; midpoint: RA: 18 07.60, Dec: -04 51.73)636.928194.0191.54% +16 57.04 +06 07.32NQ324PerPerseus614.997187.3391.49% +03 10.50 +45 00.79NQ125CasCassiopeia598.407182.2851.45% +01 19.16 +62 11.04NQ126OriOrion594.120180.9791.44% +05 34.59 +05 56.94NQ127CepCepheus587.787179.0501.42% +02 32.64 +71 00.51NQ428LynLynx545.386166.1341.32% +07 59.53 +47 28.00NQ229LibLibra538.052163.9001.30% +15 11.96−15 14.08SQ330GemGemini513.761156.5011.25% +07 04.24 +22 36.01NQ231CncCancer505.872154.0971.23% +08 38.96 +19 48.35NQ232VelVela499.649152.2021.21% +09 34.64−47 10.03SQ233ScoScorpius496.783151.3291.20% +16 53.24−27 01.89SQ334CarCarina494.184150.5371.20% +08 41.70−63 13.16SQ235MonMonoceros481.569146.6941.17% +07 03.63 +00 16.93NQ236SclSculptor474.764144.6211.15% +00 26.28−32 05.30SQ137PhePhoenix469.319142.9631.14% +00 55.91−48 34.84SQ138CVnCanes Venatici465.194141.7061.13% +13 06.96 +40 06.11NQ339AriAries441.395134.4571.07% +02 38.16 +20 47.54NQ140CapCapricornus413.947126.0951.00% +21 02.93−18 01.39SQ441ForFornax397.502121.0860.96% +02 47.88−31 38.07SQ142ComComa Berenices386.475117.7270.94% +12 47.27 +23 18.34NQ343CMaCanis Major380.118115.7910.92% +06 49.74−22 08.42SQ244PavPavo377.666115.0440.92% +19 36.71−65 46.89SQ445GruGrus365.513111.3420.89% +22 27.39−46 21.11SQ446LupLupus333.683101.6460.81% +15 13.21−42 42.53SQ347SexSextans313.51595.5020.76% +10 16.29−02 36.88SQ248TucTucana294.55789.7270.71% +23 46.64−65 49.80SQ449IndIndus294.00689.5590.71% +21 58.33−59 42.40SQ450OctOctans291.04588.6570.71% +23 00.00−82 09.12SQ451LepLepus290.29188.4280.70% +05 33.95−19 02.78SQ152LyrLyra286.47687.2660.69% +18 51.17 +36 41.36NQ453CrtCrater282.39886.0230.68% +11 23.75−15 55.74SQ254ColColumba270.18482.3030.65% +05 51.76−35 05.67SQ155VulVulpecula268.16581.6880.65% +20 13.88 +24 26.56NQ456UMiUrsa Minor255.86477.9410.62% +15 00.00 +77 41.99NQ357TelTelescopium251.51276.6150.61% +19 19.54−51 02.21SQ458HorHorologium248.88575.8150.60% +03 16.56−53 20.18SQ159PicPictor246.73975.1610.60% +05 42.46−53 28.45SQ160PsAPiscis Austrinus245.37574.7450.59% +22 17.07−30 38.53SQ461HyiHydrus243.03574.0330.59% +02 20.65−69 57.39SQ162AntAntlia238.90172.7730.58% +10 16.43−32 29.01SQ263AraAra237.05772.2120.57% +17 22.49−56 35.30SQ364LMiLeo Minor231.95670.6580.56% +10 14.72 +32 08.08NQ265PyxPyxis220.83367.2700.54% +08 57.16−27 21.10SQ266MicMicroscopium209.51363.8210.51% +20 57.88−36 16.49SQ467ApsApus206.32762.8510.50% +16 08.65−75 18.00SQ368LacLacerta200.68861.1330.49% +22 27.68 +46 02.51NQ469DelDelphinus188.54957.4350.46% +20 41.61 +11 40.26NQ470CrvCorvus183.80155.9890.45% +12 26.52−18 26.20SQ371CMiCanis Minor183.36755.8570.44% +07 39.17 +06 25.63NQ272DorDorado179.17354.5790.43% +05 14.51−59 23.22SQ173CrBCorona Borealis178.71054.4380.43% +15 50.59 +32 37.49NQ374NorNorma165.29050.3500.40% +15 54.18−51 21.09SQ375MenMensa153.48446.7540.37% +05 24.90−77 30.24SQ176VolVolans141.35443.0590.34% +07 47.73−69 48.07SQ277MusMusca138.35542.1450.34% +12 35.28−70 09.66SQ378TriTriangulum131.84740.1630.32% +02 11.07 +31 28.56NQ179ChaChamaeleon131.59240.0850.32% +10 41.53−79 12.30SQ280CrACorona Australis127.69638.8980.31% +18 38.79−41 08.85SQ481CaeCaelum124.86538.0360.30% +04 42.27−37 52.90SQ182RetReticulum113.93634.7070.28% +03 55.27−59 59.85SQ183TrATriangulum Australe109.97833.5010.27% +16 04.95−65 23.28SQ384SctScutum109.11433.2380.26% +18 40.39−09 53.32SQ485CirCircinus93.35328.4370.23% +14 34.54−63 01.82SQ386SgeSagitta79.93224.3490.19% +19 39.05 +18 51.68NQ487EquEquuleus71.64121.8230.17% +21 11.26 +07 45.49NQ488CruCrux68.44720.8500.17% +12 26.99−60 11.19SQ3

 References 

Category:Constellations