Castor BvsFulu
Castor B has a higher Absolute Magnitude (2 vs -3 mag), while Fulu has a higher Luminosity (962 vs 16 × Sun), while Castor B has a higher Right Ascension (8 vs 1 h).
Brightness
3
Apparent Magnitude
4
2
Absolute Magnitude
-3
16
Luminosity
962
Physical Properties
52
Distance
593
N/A
Surface Temperature
13,489
N/A
Color Index (B-V)
0
Position
8
Right Ascension
1
32
Declination
54
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Data sourced from HYG Database (Free for any purpose, including commercial).