AliothvsCastor
Castor has a higher Color Index (B-V) (0 vs 0), while Castor has a higher Absolute Magnitude (1 vs 0 mag), while Alioth has a higher Luminosity (110 vs 49 × Sun).
Brightness
2
Apparent Magnitude
2
0
Absolute Magnitude
1
110
Luminosity
49
Physical Properties
83
Distance
51
10,408
Surface Temperature
9,720
0
Color Index (B-V)
0
Position
13
Right Ascension
8
56
Declination
32
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Data sourced from HYG Database (Free for any purpose, including commercial).