CastorvsCastor B
Castor has a higher Luminosity (49 vs 16 × Sun), while Castor B has a higher Absolute Magnitude (2 vs 1 mag), while Castor B has a higher Apparent Magnitude (3 vs 2 mag).
Brightness
2
Apparent Magnitude
3
1
Absolute Magnitude
2
49
Luminosity
16
Physical Properties
51
Distance
52
9,720
Surface Temperature
N/A
0
Color Index (B-V)
N/A
Position
8
Right Ascension
8
32
Declination
32
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Data sourced from HYG Database (Free for any purpose, including commercial).