CastorvsYildun
Yildun has a higher Distance (172 vs 51 light-years), while Yildun has a higher Apparent Magnitude (4 vs 2 mag), while Yildun has a higher Declination (87 vs 32 °).
Brightness
2
Apparent Magnitude
4
1
Absolute Magnitude
1
49
Luminosity
44
Physical Properties
51
Distance
172
9,720
Surface Temperature
9,871
0
Color Index (B-V)
0
Position
8
Right Ascension
18
32
Declination
87
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Data sourced from HYG Database (Free for any purpose, including commercial).