AlmachvsCastor B
Castor B has a higher Absolute Magnitude (2 vs -3 mag), while Almach has a higher Luminosity (1,828 vs 16 × Sun), while Almach has a higher Distance (393 vs 52 light-years).
Brightness
2
Apparent Magnitude
3
-3
Absolute Magnitude
2
1,828
Luminosity
16
Physical Properties
393
Distance
52
4,000
Surface Temperature
N/A
1
Color Index (B-V)
N/A
Position
2
Right Ascension
8
42
Declination
32
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Data sourced from HYG Database (Free for any purpose, including commercial).