CastorvsNahn
Castor has a higher Absolute Magnitude (1 vs 0 mag), while Nahn has a higher Color Index (B-V) (1 vs 0), while Nahn has a higher Distance (373 vs 51 light-years).
Brightness
2
Apparent Magnitude
5
1
Absolute Magnitude
0
49
Luminosity
98
Physical Properties
51
Distance
373
9,720
Surface Temperature
4,816
0
Color Index (B-V)
1
Position
8
Right Ascension
9
32
Declination
22
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Data sourced from HYG Database (Free for any purpose, including commercial).