Castor BvsRukbat
Castor B has a higher Declination (32 vs -41 °), while Castor B has a higher Absolute Magnitude (2 vs 0 mag), while Rukbat has a higher Luminosity (71 vs 16 × Sun).
Brightness
3
Apparent Magnitude
4
2
Absolute Magnitude
0
16
Luminosity
71
Physical Properties
52
Distance
182
N/A
Surface Temperature
11,658
N/A
Color Index (B-V)
0
Position
8
Right Ascension
19
32
Declination
-41
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Data sourced from HYG Database (Free for any purpose, including commercial).