AltairvsNunki
Altair has a higher Absolute Magnitude (2 vs -2 mag), while Altair has a higher Color Index (B-V) (0 vs 0), while Altair has a higher Declination (9 vs -26 °).
Brightness
1
Apparent Magnitude
2
2
Absolute Magnitude
-2
11
Luminosity
643
Physical Properties
17
Distance
228
8,004
Surface Temperature
12,178
0
Color Index (B-V)
0
Position
20
Right Ascension
19
9
Declination
-26
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Data sourced from HYG Database (Free for any purpose, including commercial).