AlkaphrahvsOgma
Ogma has a higher Absolute Magnitude (4 vs -2 mag), while Alkaphrah has a higher Luminosity (393 vs 3 × Sun), while Ogma has a higher Color Index (B-V) (1 vs 0).
Brightness
4
Apparent Magnitude
8
-2
Absolute Magnitude
4
393
Luminosity
3
Physical Properties
358
Distance
259
10,039
Surface Temperature
5,925
0
Color Index (B-V)
1
Position
9
Right Ascension
17
47
Declination
38
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Data sourced from HYG Database (Free for any purpose, including commercial).