AchernarvsArkab Posterior
Arkab Posterior has a higher Color Index (B-V) (0 vs 0), while Arkab Posterior has a higher Absolute Magnitude (1 vs -3 mag), while Achernar has a higher Luminosity (1,052 vs 29 × Sun).
Brightness
0
Apparent Magnitude
4
-3
Absolute Magnitude
1
1,052
Luminosity
29
Physical Properties
139
Distance
134
12,650
Surface Temperature
7,158
0
Color Index (B-V)
0
Position
2
Right Ascension
19
-57
Declination
-45
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Data sourced from HYG Database (Free for any purpose, including commercial).