DiademvsNihal
Diadem has a higher Declination (18 vs -21 °), while Diadem has a higher Absolute Magnitude (3 vs -1 mag), while Nihal has a higher Luminosity (158 vs 5 × Sun).
Brightness
4
Apparent Magnitude
3
3
Absolute Magnitude
-1
5
Luminosity
158
Physical Properties
58
Distance
160
6,600
Surface Temperature
5,260
0
Color Index (B-V)
1
Position
13
Right Ascension
5
18
Declination
-21
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Data sourced from HYG Database (Free for any purpose, including commercial).