AltairvsMirfak
Altair has a higher Absolute Magnitude (2 vs -4 mag), while Mirfak has a higher Luminosity (4,040 vs 11 × Sun), while Mirfak has a higher Distance (506 vs 17 light-years).
Brightness
1
Apparent Magnitude
2
2
Absolute Magnitude
-4
11
Luminosity
4,040
Physical Properties
17
Distance
506
8,004
Surface Temperature
6,476
0
Color Index (B-V)
0
Position
20
Right Ascension
3
9
Declination
50
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Data sourced from HYG Database (Free for any purpose, including commercial).