OnkariavsThuban
Onkaria has a higher Absolute Magnitude (14 vs -1 mag), while Onkaria has a higher Color Index (B-V) (2 vs 0), while Thuban has a higher Luminosity (256 vs 0 × Sun).
Brightness
15
Apparent Magnitude
4
14
Absolute Magnitude
-1
0
Luminosity
256
Physical Properties
42
Distance
303
3,465
Surface Temperature
10,781
2
Color Index (B-V)
0
Position
17
Right Ascension
14
5
Declination
64
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Data sourced from HYG Database (Free for any purpose, including commercial).