DiademvsZosma
Zosma has a higher Luminosity (26 vs 5 × Sun), while Diadem has a higher Color Index (B-V) (0 vs 0), while Diadem has a higher Absolute Magnitude (3 vs 1 mag).
Brightness
4
Apparent Magnitude
3
3
Absolute Magnitude
1
5
Luminosity
26
Physical Properties
58
Distance
58
6,600
Surface Temperature
8,766
0
Color Index (B-V)
0
Position
13
Right Ascension
11
18
Declination
21
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Data sourced from HYG Database (Free for any purpose, including commercial).