AltairvsNahn
Altair has a higher Absolute Magnitude (2 vs 0 mag), while Nahn has a higher Distance (373 vs 17 light-years), while Nahn has a higher Luminosity (98 vs 11 × Sun).
Brightness
1
Apparent Magnitude
5
2
Absolute Magnitude
0
11
Luminosity
98
Physical Properties
17
Distance
373
8,004
Surface Temperature
4,816
0
Color Index (B-V)
1
Position
20
Right Ascension
9
9
Declination
22
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Data sourced from HYG Database (Free for any purpose, including commercial).