AliothvsDiadem
Diadem has a higher Absolute Magnitude (3 vs 0 mag), while Diadem has a higher Color Index (B-V) (0 vs 0), while Alioth has a higher Luminosity (110 vs 5 × Sun).
Brightness
2
Apparent Magnitude
4
0
Absolute Magnitude
3
110
Luminosity
5
Physical Properties
83
Distance
58
10,408
Surface Temperature
6,600
0
Color Index (B-V)
0
Position
13
Right Ascension
13
56
Declination
18
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Data sourced from HYG Database (Free for any purpose, including commercial).