AchirdvsCastor
Castor has a higher Luminosity (49 vs 1 × Sun), while Achird has a higher Color Index (B-V) (1 vs 0), while Castor has a higher Right Ascension (8 vs 1 h).
Brightness
3
Apparent Magnitude
2
5
Absolute Magnitude
1
1
Luminosity
49
Physical Properties
19
Distance
51
6,019
Surface Temperature
9,720
1
Color Index (B-V)
0
Position
1
Right Ascension
8
58
Declination
32
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Data sourced from HYG Database (Free for any purpose, including commercial).