AldebaranvsAltair
Altair has a higher Absolute Magnitude (2 vs -1 mag), while Aldebaran has a higher Luminosity (163 vs 11 × Sun), while Aldebaran has a higher Color Index (B-V) (2 vs 0).
Brightness
1
Apparent Magnitude
1
-1
Absolute Magnitude
2
163
Luminosity
11
Physical Properties
67
Distance
17
3,737
Surface Temperature
8,004
2
Color Index (B-V)
0
Position
5
Right Ascension
20
17
Declination
9
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Data sourced from HYG Database (Free for any purpose, including commercial).