CastorvsSegin
Castor has a higher Absolute Magnitude (1 vs -2 mag), while Castor has a higher Color Index (B-V) (0 vs 0), while Segin has a higher Luminosity (634 vs 49 × Sun).
Brightness
2
Apparent Magnitude
3
1
Absolute Magnitude
-2
49
Luminosity
634
Physical Properties
51
Distance
412
9,720
Surface Temperature
12,489
0
Color Index (B-V)
0
Position
8
Right Ascension
2
32
Declination
64
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Data sourced from HYG Database (Free for any purpose, including commercial).