Castor BvsSeginus
Seginus has a higher Luminosity (37 vs 16 × Sun), while Castor B has a higher Absolute Magnitude (2 vs 1 mag), while Seginus has a higher Right Ascension (15 vs 8 h).
Brightness
3
Apparent Magnitude
3
2
Absolute Magnitude
1
16
Luminosity
37
Physical Properties
52
Distance
87
N/A
Surface Temperature
8,233
N/A
Color Index (B-V)
0
Position
8
Right Ascension
15
32
Declination
38
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Data sourced from HYG Database (Free for any purpose, including commercial).