Castor BvsMarsic B
Castor B has a higher Absolute Magnitude (2 vs -3 mag), while Marsic B has a higher Luminosity (1,146 vs 16 × Sun), while Marsic B has a higher Distance (2,104 vs 52 light-years).
Brightness
3
Apparent Magnitude
6
2
Absolute Magnitude
-3
16
Luminosity
1,146
Physical Properties
52
Distance
2,104
N/A
Surface Temperature
4,430
N/A
Color Index (B-V)
1
Position
8
Right Ascension
16
32
Declination
17
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Data sourced from HYG Database (Free for any purpose, including commercial).