AlbireovsAlcor
Alcor has a higher Absolute Magnitude (2 vs -3 mag), while Albireo has a higher Luminosity (931 vs 14 × Sun), while Albireo has a higher Color Index (B-V) (1 vs 0).
Brightness
3
Apparent Magnitude
4
-3
Absolute Magnitude
2
931
Luminosity
14
Physical Properties
434
Distance
82
4,541
Surface Temperature
8,411
1
Color Index (B-V)
0
Position
20
Right Ascension
13
28
Declination
55
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Data sourced from HYG Database (Free for any purpose, including commercial).