AlphardvsAlruba
Alruba has a higher Declination (54 vs -9 °), while Alphard has a higher Color Index (B-V) (1 vs 0), while Alruba has a higher Absolute Magnitude (0 vs -2 mag).
Brightness
2
Apparent Magnitude
6
-2
Absolute Magnitude
0
426
Luminosity
117
Physical Properties
180
Distance
533
3,886
Surface Temperature
9,918
1
Color Index (B-V)
0
Position
9
Right Ascension
18
-9
Declination
54
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Data sourced from HYG Database (Free for any purpose, including commercial).