Sky & Deep Sky
Tables Bright Cold
(*) Always below horizon Name Magn. Dist. (L.Y.) Temp.°K Type Greek Const. Mira 3.04 200 2.640 M7 Omicron Cet Ras Algethi 3.48 219 2.800 M5 Alpha Her Proxima * 10.7 4.24 2.800 M5 Alpha C Cen Gorgonea III 3.39 500 2.920 M4 Rho Per Tejat p. 2.88 163 3.040 M3 Mu Gem Auva 3.38 269 3.040 M3 Delta Vir Tejat a. 3.28 186 3.040 M3 Eta Gem Scheat 2.42 233 3.160 M2 Beta Peg Erakis 4.08 1.090 3.160 M2 Mu Cep Ruchba 5.44 - 3.160 M2 Omega Cyg Antares 0.96 330 3.280 M1 Alpha Sco Menkar 2.53 200 3.280 M1 Alpha Cet Betelgeuse 0.50 310 3.280 M1 Alpha Ori Mirak 2.06 170 3.400 M0 Beta And Yed Prior 2.74 170 3.400 M0 Delta Oph Zaurak 2.95 170 3.400 M0 Gamma Eri
Hot
(*) Always below horizon Name Magn. Dist. (L.Y.) Temp.°K Type Greek Const. Naos 2.25 2.040 40.000 O5 Zeta Pup Trapezium C star 5.13 1.470 37.600 O6 - Ori Menkhib 4.04 820 35.200 O7 Xi Per Meissa 3.54 2.170 32.800 O8 Lambda Ori Suhail al Muhlif * 1.78 148 30.400 O9 Gamma Vel Alnitak 2.05 1.120 30.400 O9 Zeta Ori Mintaka 2.23 1.300 30.400 O9 Delta Ori Fieht 2.56 530 30.400 O9 Zeta Oph Nair al Saif 2.77 1.810 30.400 O9 Iota Ori Alnilam 1.70 1.210 28.000 B0 Epsilon Ori Saiph 2.06 68 28.000 B0 Kappa Ori Dschubba 2.32 550 28.000 B0 Delta Sco Spica 0.98 220 25.600 B1 Alpha Vir Mirzam 1.98 720 25.600 B1 Beta CMa Graffias 2.62 820 25.600 B1 Beta1 Sco
Close
(*) Always below horizon
Name Magn. Dist. (L.Y.) Temp.°K Type Greek Const. Proxima * 10.7 4.24 2.800 M5 Alpha C Cen
Rigel Kent. * -0.27 4.39 5.800 G2 Alpha A Cen
Sirius -1.46 8.6 9.680 A1 Alpha CMa Procyon 0.38 11.2 6.600 F5 Alpha CMi Keid 4.43 15.6 4.680 K1 Omicron 2 Eri Altair 0.77 16 8.000 A7 Alpha Aql Alsafi 4.68 18.4 4.800 K0 Sigma Dra Achird 3.44 18.5 6.120 F9 Eta Cas Fomalhaut 1.16 21.9 9.040 A3 Alpha PsA Tabit 3.19 23.8 6.480 F6 Pi 3 Ori Alula Aus. 4.87 23.8 6.000 G0 Xi UMa Marfak 5.17 25.1 5.500 G5 Mu Cas Chara 4.26 27.9 6.000 G0 Beta CVn Rana 3.54 28.8 4.800 K0 Delta Eri Muphrid 2.68 30 6.000 G0 Eta Boo Zavijava 3.61 31 6.120 F9 Beta Vir
Far
Name Magn. Dist. (L.Y.) Temp.°K Type Greek Const. Almaaz 2.99 4.660 7.400 F0 Epsilon Aur Wezen 1.84 2.520 6.240 F8 Delta CMa Aludra 2.45 2.510 16.000 B5 Eta CMa Meissa 3.54 2.170 32.800 O8 Lambda Ori Naos 2.25 2.040 40.000 O5 Zeta Pup Nair al Saif 2.77 1.810 30.400 O9 Iota Ori Thabit 4.62 1.810 28.000 B0 Upsilon Ori Aladfar 4.39 1.630 23.200 B2 Eta Lyr Marfik 5.00 1.630 5.080 G8 Kappa Her Deneb 1.25 1.480 9.360 A2 Alpha Cyg Algiebba 3.36 1.420 25.600 B1 Eta Ori Mintaka 2.23 1.300 30.400 O9 Delta Ori Alnilam 1.70 1.210 28.000 B0 Epsilon Ori Alnitak 2.05 1.120 30.400 O9 Zeta Ori Erakis 4.08 1.090 3.160 M2 Mu Cep
Absolute Magnitude (visual > 2.0)
What are apparent and absolute magnitudes? Apparent is how bright the appear to us in the sky. The
scale is somewhat arbitrary but a magnitude difference of 5 has been set to exactly a factor of 100 in intensity. Absolute magnitudes are how bright a star would appear from some standard distance, arbitrarily set as 10 parsecs or about 32.6 light years. Stars can be as bright as absolute magnitude -8 and as faint as absolute magnitude +16 or fainter.
(*) Canopus is not visible from latitudes above 37 degrees
north
Name Greek Const. Visual Magn. Absol. Magn. Sun=1 Dist. (L.Y.) Temp.°K Type Class
Rigel Beta
Orion
0.12
-8.2 60.000
910
12.400
B8
Supergiant (I)
Canopus * Alpha
Carina
-0.72
-8 15.000
313
7.400
F0
Bright Giant (II)
Alnilam Epsilon
Orion
1.70
-7.0 40.000
1.210
28.000
B0
Supergiant (I)
Alnitak Zeta
Orion
2.05
-6.4 35.000
1.120
30.400
O9
Supergiant (I)
Deneb Alpha
Cygnus
1.25
-6.2 60.000
1.480
9.360
A2
Supergiant (I)
Wezen Delta
Canis Major
1.84
-5.9 60.000
2.520
6.240
F8
Supergiant (I)
Betelgeuse Alpha
Orion
0.50
-5.2 15.000
310
3.280
M1
Supergiant (I)
Antares Alpha
Scorpio
0.96
-5.0 9.000
330
3.280
M1
Supergiant (I)
Mirzam Beta
Canis Major
1.98
-4.5 7.600
720
25.600
B1
Bright Giant (II)
Adhara Epsilon
Canis Major
1.50
-4.4 9.000
570
23.200
B2
Bright Giant (II)
Mirphak Alpha
Perseus
1.79
-3.9 4.000
630
6.600
F5
Supergiant (I)
Polaris Alpha
Ursa Minor
2.02
-3.7 4.000
820
6.360
F7
Supergiant (I)
Bellatrix Gamma
Orion
1.64
-3.4 4.000
360
23.200
B2
Supergiant (I)
Shaula Lambda
Scorpio
1.63
-3.0 1.700
330
23.200
B2
Subgiant (IV)
Spica Alpha
Virgo
0.98
-2.9 2.300
220
25.600
B1
Giant (III)
Nath Beta
Taurus
1.65
-1.5 1.700
140
13.600
B7
Giant (III)
Kaus Australis Epsilon
Sagittarius
1.85
-1.3 250
76
11.200
B9
Giant (III)
Capella Alpha
Auriga
0.08
-0.6 160
41
5.500
G5
Giant (III)
Aldebaran Alpha
Taurus
0.85
-0.6 125
60
4.200
K5
Giant (III)
Dubhe Alpha
Ursa Major
1.79
-0.5 145
100
4.800
K0
Giant (III)
Arcturus Alpha
Bootes
-0.04
-0.3 115
34
4.680
K1
Giant (III)
Regulus Alpha
Leo
1.35
-0.2 160
72
13.600
B7
Main Seq. (V)
Alioth Epsilon
Ursa Major
1.77
-0.2 85
65
10.000
A0
Main Seq. (V)
Alhena Gamma
Gemini
1.93
-0.1 160
57
10.000
A0
Subgiant (IV)
Vega Alpha
Lyra
0.03
0.5 58
94
10.000
A0
Main Seq. (V)
Castor Alpha
Gemini
1.88
0.9 36
49
9.360
A2
Main Seq. (V)
Pollux Beta
Gemini
1.14
1.0 35
35
4.800
K0
Giant (III)
Sirius Alpha
Canis Major
-1.46
1.5 23
8.6
9.680
A1
Main Seq. (V)
Alkaid Eta
Ursa Major
1.86
1.6 630
140
20.800
B3
Main Seq. (V)
Altair Alpha
Aquila
0.77
2.4 9
16
8.000
A7
Main Seq. (V)
Procyon Alpha
Canis Minor
0.38
2.7 6
11.2
6.600
F5
Subgiant (IV)
Sun -
-
-26.72
4.8 1
8 min.
5.800
G2
Main Seq. (V)
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Constellation pictures are modified screen displaies of Voyager II™ version 2.0 for the Macintosh™, the Astronomy Program of Carina Software, 12919 Alcosta Blvd Suite #7, San Ramon, CA 94583
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