Hydra is the mucklest constellation.
The buird ablo ranks the 88 modern constellations bi the solid angle that thay subtend in the lift, measured in square degrees n millisteradians .
Thir solid angles depend oan arbitrie boundaries atween the constellations: the leet ablo is based oan constellation boundaries drawn up bi Eugène Delporte in 1930 oan behalf o the IAU n publeesht in Délimitation scientifique des constellations (Cambridge Varsity Press). Afore Delporte's wairk, thaur wis nae precise leet o the boundaries o ilka constellation.
Delporte drew the boundaries alang verteecal n horizontal lines o richt ascension n declination ; houever, he did sae fer the epoch B1875.0 , this means that cause o the precession o the equinoxes, the borders oan ae modern stair cairt (e.g., fer epoch J2000 ) ar awreadie ae wee bit aff kilter n ar nae langer perfectlie vertical or horizontal. This skew will graw ower the years n centuairs tae come. Houever, this disna chynge the solid angle o onie constellation.
Rank
Familie [ 1]
Abbrev.
Constellation
Solid angle ("Aurie") (sq. deg.) [ 2]
Solid angle (millisteradians)
Percentage
Richt ascension (hoors & mins) [ 3]
Declinaition (degs & mins)
Quad [ 4]
01
Her
Hya
Hydra
1302.844
396.869
3.16%
11 36.73
−14 31.91
SQ2
02
Zod
Vir
Virgo
1294.428
394.305
3.14%
13 24.39
−04 09.51
SQ3
03
Urs
UMa
Ursa Major
1279.660
389.807
3.10%
11 18.76
+50 43.27
NQ2
04
Per
Cet
Cetus
1231.411
375.109
2.99%
01 40.10
−07 10.76
SQ1
05
Her
Her
Hercules
1225.148
373.201
2.97%
17 23.16
+27 29.93
NQ3
06
Wat
Eri
Eridanus
1137.919
346.630
2.76%
03 18.02
−28 45.37
SQ1
07
Per
Peg
Pegasus
1120.794
341.413
2.72%
22 41.84
+19 27.98
NQ4
08
Urs
Dra
Draco
1082.952
329.886
2.63%
15 08.64
+67 00.40
NQ3
09
Her
Cen
Centaurus
1060.422
323.023
2.57%
13 04.27
−47 20.72
SQ3
10
Zod
Aqr
Aquarius
979.854
298.481
2.38%
22 17.38
−10 47.35
SQ4
11
Her
Oph
Ophiuchus
948.340
288.881
2.30%
17 23.69
−07 54.74
SQ3
12
Zod
Leo
Leo
946.964
288.462
2.30%
10 40.03
+13 08.32
NQ2
13
Urs
Boo
Boötes
906.831
276.237
2.20%
14 42.64
+31 12.16
NQ3
14
Zod
Psc
Pisces
889.417
270.932
2.16%
00 28.97
+13 41.23
NQ1
15
Zod
Sgr
Sagittarius
867.432
264.235
2.10%
19 05.94
−28 28.61
SQ4
16
Her
Cyg
Cygnus
803.983
244.907
1.95%
20 35.28
+44 32.70
NQ4
17
Zod
Tau
Taurus
797.249
242.856
1.93%
04 42.13
+14 52.63
NQ1
18
Urs
Cam
Camelopardalis
756.828
230.543
1.83%
08 51.37
+69 22.89
NQ2
19
Per
And
Andromeda
722.278
220.018
1.75%
00 48.46
+37 25.91
NQ1
20
Wat
Pup
Puppis
673.434
205.140
1.63%
07 15.48
−31 10.64
SQ2
21
Per
Aur
Auriga
657.438
200.267
1.59%
06 04.42
+42 01.68
NQ2
22
Her
Aql
Aquila
652.473
198.755
1.58%
19 40.02
+03 24.65
NQ4
23
Her
Ser
Serpens [ 5]
636.928
194.019
1.54%
16 57.04
+06 07.32
NQ3
24
Per
Per
Perseus
614.997
187.339
1.49%
03 10.50
+45 00.79
NQ1
25
Per
Cas
Cassiopeia
598.407
182.285
1.45%
01 19.16
+62 11.04
NQ1
26
Ori
Ori
Orion
594.120
180.979
1.44%
05 34.59
+05 56.94
NQ1
27
Per
Cep
Cepheus
587.787
179.050
1.42%
02 32.64
+71 00.51
NQ4
28
Urs
Lyn
Lynx
545.386
166.134
1.32%
07 59.53
+47 28.00
NQ2
29
Zod
Lib
Libra
538.052
163.900
1.30%
15 11.96
−15 14.08
SQ3
30
Zod
Gem
Gemini
513.761
156.501
1.25%
07 04.24
+22 36.01
NQ2
31
Zod
Cnc
Cancer
505.872
154.097
1.23%
08 38.96
+19 48.35
NQ2
32
Wat
Vel
Vela
499.649
152.202
1.21%
09 34.64
−47 10.03
SQ2
33
Zod
Sco
Scorpius
496.783
151.329
1.20%
16 53.24
−27 01.89
SQ3
34
Wat
Car
Carina
494.184
150.537
1.20%
08 41.70
−63 13.16
SQ2
35
Ori
Mon
Monoceros
481.569
146.694
1.17%
07 03.63
+00 16.93
NQ2
36
Lac
Scl
Sculptor
474.764
144.621
1.15%
00 26.28
−32 05.30
SQ1
37
Bay
Phe
Phoenix
469.319
142.963
1.14%
00 55.91
−48 34.84
SQ1
38
Urs
CVn
Canes Venatici
465.194
141.706
1.13%
13 06.96
+40 06.11
NQ3
39
Zod
Ari
Aries
441.395
134.457
1.07%
02 38.16
+20 47.54
NQ1
40
Zod
Cap
Capricornus
413.947
126.095
1.00%
21 02.93
−18 01.39
SQ4
41
Lac
For
Fornax
397.502
121.086
0.96%
02 47.88
−31 38.07
SQ1
42
Urs
Com
Coma Berenices
386.475
117.727
0.94%
12 47.27
+23 18.34
NQ3
43
Ori
CMa
Canis Major
380.118
115.791
0.92%
06 49.74
−22 08.42
SQ2
44
Bay
Pav
Pavo
377.666
115.044
0.92%
19 36.71
−65 46.89
SQ4
45
Bay
Gru
Grus
365.513
111.342
0.89%
22 27.39
−46 21.11
SQ4
46
Her
Lup
Lupus
333.683
101.646
0.81%
15 13.21
−42 42.53
SQ3
47
Her
Sex
Sextans
313.515
95.502
0.76%
10 16.29
−02 36.88
SQ2
48
Bay
Tuc
Tucana
294.557
89.727
0.71%
23 46.64
−65 49.80
SQ4
49
Bay
Ind
Indus
294.006
89.559
0.71%
21 58.33
−59 42.40
SQ4
50
Lac
Oct
Octans
291.045
88.657
0.71%
23 00.00
−82 09.12
SQ4
51
Ori
Lep
Lepus
290.291
88.428
0.70%
05 33.95
−19 02.78
SQ1
52
Her
Lyr
Lyra
286.476
87.266
0.69%
18 51.17
+36 41.36
NQ4
53
Her
Crt
Crater
282.398
86.023
0.68%
11 23.75
−15 55.74
SQ2
54
Wat
Col
Columba
270.184
82.303
0.65%
05 51.76
−35 05.67
SQ1
55
Her
Vul
Vulpecula
268.165
81.688
0.65%
20 13.88
+24 26.56
NQ4
56
Urs
UMi
Ursa Minor
255.864
77.941
0.62%
15 00.00
+77 41.99
NQ3
57
Lac
Tel
Telescopium
251.512
76.615
0.61%
19 19.54
−51 02.21
SQ4
58
Lac
Hor
Horologium
248.885
75.815
0.60%
03 16.56
−53 20.18
SQ1
59
Lac
Pic
Pictor
246.739
75.161
0.60%
05 42.46
−53 28.45
SQ1
60
Wat
PsA
Piscis Austrinus
245.375
74.745
0.59%
22 17.07
−30 38.53
SQ4
61
Bay
Hyi
Hydrus
243.035
74.033
0.59%
02 20.65
−69 57.39
SQ1
62
Lac
Ant
Antlia
238.901
72.773
0.58%
10 16.43
−32 29.01
SQ2
63
Her
Ara
Ara
237.057
72.212
0.57%
17 22.49
−56 35.30
SQ3
64
Urs
LMi
Leo Minor
231.956
70.658
0.56%
10 14.72
+32 08.08
NQ2
65
Wat
Pyx
Pyxis
220.833
67.270
0.54%
08 57.16
−27 21.10
SQ2
66
Lac
Mic
Microscopium
209.513
63.821
0.51%
20 57.88
−36 16.49
SQ4
67
Bay
Aps
Apus
206.327
62.851
0.50%
16 08.65
−75 18.00
SQ3
68
Per
Lac
Lacerta
200.688
61.133
0.49%
22 27.68
+46 02.51
NQ4
69
Wat
Del
Delphinus
188.549
57.435
0.46%
20 41.61
+11 40.26
NQ4
70
Her
Crv
Corvus
183.801
55.989
0.45%
12 26.52
−18 26.20
SQ3
71
Ori
CMi
Canis Minor
183.367
55.857
0.44%
07 39.17
+06 25.63
NQ2
72
Bay
Dor
Dorado
179.173
54.579
0.43%
05 14.51
−59 23.22
SQ1
73
Urs
CrB
Corona Borealis
178.710
54.438
0.43%
15 50.59
+32 37.49
NQ3
74
Lac
Nor
Norma
165.290
50.350
0.40%
15 54.18
−51 21.09
SQ3
75
Lac
Men
Mensa
153.484
46.754
0.37%
05 24.90
−77 30.24
SQ1
76
Bay
Vol
Volans
141.354
43.059
0.34%
07 47.73
−69 48.07
SQ2
77
Bay
Mus
Musca
138.355
42.145
0.34%
12 35.28
−70 09.66
SQ3
78
Per
Tri
Triangulum
131.847
40.163
0.32%
02 11.07
+31 28.56
NQ1
79
Bay
Cha
Chamaeleon
131.592
40.085
0.32%
10 41.53
−79 12.30
SQ2
80
Her
CrA
Corona Australis
127.696
38.898
0.31%
18 38.79
−41 08.85
SQ4
81
Lac
Cae
Caelum
124.865
38.036
0.30%
04 42.27
−37 52.90
SQ1
82
Lac
Ret
Reticulum
113.936
34.707
0.28%
03 55.27
−59 59.85
SQ1
83
Her
TrA
Triangulum Australe
109.978
33.501
0.27%
16 04.95
−65 23.28
SQ3
84
Her
Sct
Scutum
109.114
33.238
0.26%
18 40.39
−09 53.32
SQ4
85
Lac
Cir
Circinus
93.353
28.437
0.23%
14 34.54
−63 01.82
SQ3
86
Her
Sge
Sagitta
79.932
24.349
0.19%
19 39.05
+18 51.68
NQ4
87
Wat
Equ
Equuleus
71.641
21.823
0.17%
21 11.26
+07 45.49
NQ4
88
Her
Cru
Crux
68.447
20.850
0.17%
12 26.99
−60 11.19
SQ3
References
↑ 'Familie' abbreviations that correspond til the Constellation Familie Abbreviations: Per=Perseus, Urs=Ursa Mukle, Her=Hercules, Zod=Zodiacal, Ori=Orion, Wat=Heaenlie watters, Bay=J. Bayer, Lac=La Caille (see the Leet o constellations ).
↑ The total solid angle o aw constellations is the total solid angle o the lift, n this is exactlie 4π steradians , or 4π × (180/π)2 = 129,600/π square degrees, or approximatelie 41,252.961 square degrees. The figurs oan the buird dinna sum exactlie til this nummer cause o roundin mistaks, thir vanish whan the auries ar roundit in steid til yin decimal place.
↑ Richt ascension n declination o the midpoints o the constellations.
↑ "Quad" designates the quadrant o the lift aes N fer North or S fer South, Quadrant 1 throuch 4.
↑ Serpens is dividit intil the twa pairts: Serpens Caput ("The Serpant's Heid"; 428.484 sq. deg.; midpoint: RA: 15 46.49, Dec: +10 58.20), n Serpens Cauda ("The Serpant's Tail"; 208.444 sq. deg.; midpoint: RA: 18 07.60, Dec: -04 51.73)
Ootby airtins