Castor BvsKeid
Castor B has a higher Declination (32 vs -8 °), while Castor B has a higher Luminosity (16 vs 0 × Sun), while Keid has a higher Absolute Magnitude (6 vs 2 mag).
Brightness
3
Apparent Magnitude
4
2
Absolute Magnitude
6
16
Luminosity
0
Physical Properties
52
Distance
16
N/A
Surface Temperature
5,221
N/A
Color Index (B-V)
1
Position
8
Right Ascension
4
32
Declination
-8
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Data sourced from HYG Database (Free for any purpose, including commercial).