AnservsCastor B
Castor B has a higher Absolute Magnitude (2 vs 0 mag), while Anser has a higher Luminosity (121 vs 16 × Sun), while Anser has a higher Distance (297 vs 52 light-years).
Brightness
4
Apparent Magnitude
3
0
Absolute Magnitude
2
121
Luminosity
16
Physical Properties
297
Distance
52
3,791
Surface Temperature
N/A
2
Color Index (B-V)
N/A
Position
19
Right Ascension
8
25
Declination
32
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Data sourced from HYG Database (Free for any purpose, including commercial).