CastulavsDubhe
Castula has a higher Absolute Magnitude (1 vs -1 mag), while Dubhe has a higher Right Ascension (11 vs 1 h), while Dubhe has a higher Luminosity (233 vs 46 × Sun).
Brightness
5
Apparent Magnitude
2
1
Absolute Magnitude
-1
46
Luminosity
233
Physical Properties
200
Distance
123
4,848
Surface Temperature
4,601
1
Color Index (B-V)
1
Position
1
Right Ascension
11
59
Declination
62
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Data sourced from HYG Database (Free for any purpose, including commercial).