Castor BvsMirach
Castor B has a higher Absolute Magnitude (2 vs -2 mag), while Mirach has a higher Luminosity (474 vs 16 × Sun), while Castor B has a higher Right Ascension (8 vs 1 h).
Brightness
3
Apparent Magnitude
2
2
Absolute Magnitude
-2
16
Luminosity
474
Physical Properties
52
Distance
197
N/A
Surface Temperature
3,683
N/A
Color Index (B-V)
2
Position
8
Right Ascension
1
32
Declination
36
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Data sourced from HYG Database (Free for any purpose, including commercial).