AltairvsDubhe
Altair has a higher Absolute Magnitude (2 vs -1 mag), while Dubhe has a higher Luminosity (233 vs 11 × Sun), while Dubhe has a higher Distance (123 vs 17 light-years).
Brightness
1
Apparent Magnitude
2
2
Absolute Magnitude
-1
11
Luminosity
233
Physical Properties
17
Distance
123
8,004
Surface Temperature
4,601
0
Color Index (B-V)
1
Position
20
Right Ascension
11
9
Declination
62
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Data sourced from HYG Database (Free for any purpose, including commercial).