AlkaphrahvsMerak
Merak has a higher Absolute Magnitude (0 vs -2 mag), while Alkaphrah has a higher Luminosity (393 vs 60 × Sun), while Merak has a higher Color Index (B-V) (0 vs 0).
Brightness
4
Apparent Magnitude
2
-2
Absolute Magnitude
0
393
Luminosity
60
Physical Properties
358
Distance
80
10,039
Surface Temperature
9,731
0
Color Index (B-V)
0
Position
9
Right Ascension
11
47
Declination
56
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Data sourced from HYG Database (Free for any purpose, including commercial).