Castor BvsSirius
Castor B has a higher Declination (32 vs -17 °), while Castor B has a higher Apparent Magnitude (3 vs -1 mag), while Castor B has a higher Distance (52 vs 9 light-years).
Brightness
3
Apparent Magnitude
-1
2
Absolute Magnitude
1
16
Luminosity
23
Physical Properties
52
Distance
9
N/A
Surface Temperature
10,014
N/A
Color Index (B-V)
0
Position
8
Right Ascension
7
32
Declination
-17
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Data sourced from HYG Database (Free for any purpose, including commercial).