AlphardvsCanopus
Alphard has a higher Apparent Magnitude (2 vs -1 mag), while Canopus has a higher Luminosity (13,855 vs 426 × Sun), while Alphard has a higher Color Index (B-V) (1 vs 0).
Brightness
2
Apparent Magnitude
-1
-2
Absolute Magnitude
-5
426
Luminosity
13,855
Physical Properties
180
Distance
309
3,886
Surface Temperature
8,453
1
Color Index (B-V)
0
Position
9
Right Ascension
6
-9
Declination
-53
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Data sourced from HYG Database (Free for any purpose, including commercial).