CastorvsLiesma
Liesma has a higher Color Index (B-V) (1 vs 0), while Castor has a higher Luminosity (49 vs 4 × Sun), while Liesma has a higher Distance (289 vs 51 light-years).
Brightness
2
Apparent Magnitude
8
1
Absolute Magnitude
3
49
Luminosity
4
Physical Properties
51
Distance
289
9,720
Surface Temperature
5,605
0
Color Index (B-V)
1
Position
8
Right Ascension
14
32
Declination
54
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Data sourced from HYG Database (Free for any purpose, including commercial).