Castor BvsPollux
Castor B has a higher Apparent Magnitude (3 vs 1 mag), while Pollux has a higher Luminosity (32 vs 16 × Sun), while Castor B has a higher Absolute Magnitude (2 vs 1 mag).
Brightness
3
Apparent Magnitude
1
2
Absolute Magnitude
1
16
Luminosity
32
Physical Properties
52
Distance
34
N/A
Surface Temperature
4,764
N/A
Color Index (B-V)
1
Position
8
Right Ascension
8
32
Declination
28
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Data sourced from HYG Database (Free for any purpose, including commercial).