AltairvsSchedar
Altair has a higher Absolute Magnitude (2 vs -2 mag), while Schedar has a higher Luminosity (542 vs 11 × Sun), while Altair has a higher Right Ascension (20 vs 1 h).
Brightness
1
Apparent Magnitude
2
2
Absolute Magnitude
-2
11
Luminosity
542
Physical Properties
17
Distance
228
8,004
Surface Temperature
4,368
0
Color Index (B-V)
1
Position
20
Right Ascension
1
9
Declination
57
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Data sourced from HYG Database (Free for any purpose, including commercial).