AlkesvsCastor B
Castor B has a higher Declination (32 vs -18 °), while Alkes has a higher Distance (159 vs 52 light-years), while Alkes has a higher Luminosity (48 vs 16 × Sun).
Brightness
4
Apparent Magnitude
3
1
Absolute Magnitude
2
48
Luminosity
16
Physical Properties
159
Distance
52
4,561
Surface Temperature
N/A
1
Color Index (B-V)
N/A
Position
11
Right Ascension
8
-18
Declination
32
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Data sourced from HYG Database (Free for any purpose, including commercial).