CastorvsMegrez
Megrez has a higher Color Index (B-V) (0 vs 0), while Megrez has a higher Absolute Magnitude (1 vs 1 mag), while Megrez has a higher Apparent Magnitude (3 vs 2 mag).
Brightness
2
Apparent Magnitude
3
1
Absolute Magnitude
1
49
Luminosity
25
Physical Properties
51
Distance
81
9,720
Surface Temperature
9,256
0
Color Index (B-V)
0
Position
8
Right Ascension
12
32
Declination
57
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Data sourced from HYG Database (Free for any purpose, including commercial).