MerakvsTarf
Merak has a higher Absolute Magnitude (0 vs -1 mag), while Tarf has a higher Color Index (B-V) (1 vs 0), while Merak has a higher Declination (56 vs 9 °).
Brightness
2
Apparent Magnitude
4
0
Absolute Magnitude
-1
60
Luminosity
292
Physical Properties
80
Distance
303
9,731
Surface Temperature
3,822
0
Color Index (B-V)
1
Position
11
Right Ascension
8
56
Declination
9
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Data sourced from HYG Database (Free for any purpose, including commercial).