CastorvsVega
Castor has a higher Color Index (B-V) (0 vs 0), while Castor has a higher Apparent Magnitude (2 vs 0 mag), while Vega has a higher Right Ascension (19 vs 8 h).
Brightness
2
Apparent Magnitude
0
1
Absolute Magnitude
1
49
Luminosity
50
Physical Properties
51
Distance
25
9,720
Surface Temperature
10,138
0
Color Index (B-V)
0
Position
8
Right Ascension
19
32
Declination
39
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Data sourced from HYG Database (Free for any purpose, including commercial).