AltairvsCopernicus
Altair has a higher Luminosity (11 vs 1 × Sun), while Copernicus has a higher Apparent Magnitude (6 vs 1 mag), while Copernicus has a higher Color Index (B-V) (1 vs 0).
Brightness
1
Apparent Magnitude
6
2
Absolute Magnitude
6
11
Luminosity
1
Physical Properties
17
Distance
40
8,004
Surface Temperature
5,081
0
Color Index (B-V)
1
Position
20
Right Ascension
9
9
Declination
28
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Data sourced from HYG Database (Free for any purpose, including commercial).