Castor BvsSubra
Castor B has a higher Absolute Magnitude (2 vs 1 mag), while Subra has a higher Luminosity (54 vs 16 × Sun), while Castor B has a higher Declination (32 vs 10 °).
Brightness
3
Apparent Magnitude
4
2
Absolute Magnitude
1
16
Luminosity
54
Physical Properties
52
Distance
130
N/A
Surface Temperature
6,317
N/A
Color Index (B-V)
1
Position
8
Right Ascension
10
32
Declination
10
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Data sourced from HYG Database (Free for any purpose, including commercial).