3C 273vsCastor
Castor has a higher Absolute Magnitude (1 vs -7 mag), while 3C 273 has a higher Distance (326,156 vs 51 light-years), while 3C 273 has a higher Luminosity (61,376 vs 49 × Sun).
Brightness
13
Apparent Magnitude
2
-7
Absolute Magnitude
1
61,376
Luminosity
49
Physical Properties
326,156
Distance
51
8,839
Surface Temperature
9,720
0
Color Index (B-V)
0
Position
12
Right Ascension
8
2
Declination
32
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Data sourced from HYG Database (Free for any purpose, including commercial).