AcrabvsCastor
Castor has a higher Declination (32 vs -20 °), while Castor has a higher Color Index (B-V) (0 vs 0), while Castor has a higher Absolute Magnitude (1 vs -3 mag).
Brightness
3
Apparent Magnitude
2
-3
Absolute Magnitude
1
1,266
Luminosity
49
Physical Properties
404
Distance
51
11,016
Surface Temperature
9,720
0
Color Index (B-V)
0
Position
16
Right Ascension
8
-20
Declination
32
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Data sourced from HYG Database (Free for any purpose, including commercial).