AchernarvsMira
Mira has a higher Absolute Magnitude (2 vs -3 mag), while Mira has a higher Color Index (B-V) (1 vs 0), while Achernar has a higher Luminosity (1,052 vs 19 × Sun).
Brightness
0
Apparent Magnitude
6
-3
Absolute Magnitude
2
1,052
Luminosity
19
Physical Properties
139
Distance
299
12,650
Surface Temperature
4,826
0
Color Index (B-V)
1
Position
2
Right Ascension
2
-57
Declination
-3
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Data sourced from HYG Database (Free for any purpose, including commercial).