3C 273vsAlcor
Alcor has a higher Absolute Magnitude (2 vs -7 mag), while 3C 273 has a higher Luminosity (61,376 vs 14 × Sun), while 3C 273 has a higher Distance (326,156 vs 82 light-years).
Brightness
13
Apparent Magnitude
4
-7
Absolute Magnitude
2
61,376
Luminosity
14
Physical Properties
326,156
Distance
82
8,839
Surface Temperature
8,411
0
Color Index (B-V)
0
Position
12
Right Ascension
13
2
Declination
55
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Data sourced from HYG Database (Free for any purpose, including commercial).