ArcturusvsCastor B
Castor B has a higher Absolute Magnitude (2 vs 0 mag), while Castor B has a higher Apparent Magnitude (3 vs 0 mag), while Arcturus has a higher Luminosity (116 vs 16 × Sun).
Brightness
0
Apparent Magnitude
3
0
Absolute Magnitude
2
116
Luminosity
16
Physical Properties
37
Distance
52
4,234
Surface Temperature
N/A
1
Color Index (B-V)
N/A
Position
14
Right Ascension
8
19
Declination
32
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Data sourced from HYG Database (Free for any purpose, including commercial).