AlpheccavsDubhe
Alphecca has a higher Absolute Magnitude (0 vs -1 mag), while Dubhe has a higher Color Index (B-V) (1 vs 0), while Dubhe has a higher Luminosity (233 vs 60 × Sun).
Brightness
2
Apparent Magnitude
2
0
Absolute Magnitude
-1
60
Luminosity
233
Physical Properties
75
Distance
123
9,743
Surface Temperature
4,601
0
Color Index (B-V)
1
Position
16
Right Ascension
11
27
Declination
62
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Data sourced from HYG Database (Free for any purpose, including commercial).