Castor BvsDubhe
Castor B has a higher Absolute Magnitude (2 vs -1 mag), while Dubhe has a higher Luminosity (233 vs 16 × Sun), while Dubhe has a higher Distance (123 vs 52 light-years).
Brightness
3
Apparent Magnitude
2
2
Absolute Magnitude
-1
16
Luminosity
233
Physical Properties
52
Distance
123
N/A
Surface Temperature
4,601
N/A
Color Index (B-V)
1
Position
8
Right Ascension
11
32
Declination
62
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Data sourced from HYG Database (Free for any purpose, including commercial).