AlcorvsTarf
Alcor has a higher Absolute Magnitude (2 vs -1 mag), while Tarf has a higher Luminosity (292 vs 14 × Sun), while Tarf has a higher Color Index (B-V) (1 vs 0).
Brightness
4
Apparent Magnitude
4
2
Absolute Magnitude
-1
14
Luminosity
292
Physical Properties
82
Distance
303
8,411
Surface Temperature
3,822
0
Color Index (B-V)
1
Position
13
Right Ascension
8
55
Declination
9
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Data sourced from HYG Database (Free for any purpose, including commercial).