name visual magnitude* and spectrum distance in visual luminosity
light-years**
A*** B*** A*** B***
Sirius -1.50 A1 V +7.20 dA5 8.6 23.0 0.0080
Canopus -0.73 F0 Ib 98.0 1,450.0
Alpha Centauri +0.10 G2 V +1.50 K5 V 4.3 1.3 0.3600
Vega +0.04 A0 V 26.0 52.0
Arcturus 0.00 K2 III 36.0 110.0
Capella +0.05 G III +10.20 M1 V 45.0 160.0
Rigel +0.08 B8 Ia +6.60 B9 600.0 25,000.0 70.0000
Procyon +0.34 F5 IV +10.80 d 11.4 7.6 0.0005
Betelgeuse +0.41 M2 I (var.) 600.0 21,000.0
Achernar +0.47 B5 IV-V 65.0 210.0
Beta Centauri +0.61 B1 II B2(?) 300.0 3,600.0 ?
Altair +0.77 B7 V 16.6 10.0
Alpha Crucis +1.58 B1 IV-V +2.09 B3 V 390.0 2,760.0 1,600.0000
Aldebaran +0.86 K5 III +13.00 M2 V 52.0 100.0 0.0013
Spica +1.12 B1.5 V +3.10 B3 V 274.0 2,000.0 330.0000
Antares +0.90 M1 Ib (var.) +5.10 B4e V 420.0 6,000.0 115.0000
Pollux +1.15 K0 III 37.0 170.0
Fomalhaut +1.18 A3 V +6.50 K4 V 22.6 13.0 0.1000
Deneb +1.26 A2 Ia 1,400.0 47,000.0
Beta Crucis +1.24 B0.5 V 500.0 5,700.0
*Negative magnitudes are brightest, and one magnitude difference corresponds to a
difference in brightness of 2.5 times; e.g., a star of magnitude -1 is 10 times
brighter than one of magnitude +1.5. **One light-year equals about 9.46(10^12) kilometres;
^ indicates exponentiation. ***A and B are brighter and fainter components, respectively, of star.
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