3C 273vsSirius
Sirius has a higher Absolute Magnitude (1 vs -7 mag), while 3C 273 has a higher Declination (2 vs -17 °), while 3C 273 has a higher Apparent Magnitude (13 vs -1 mag).
Brightness
13
Apparent Magnitude
-1
-7
Absolute Magnitude
1
61,376
Luminosity
23
Physical Properties
326,156
Distance
9
8,839
Surface Temperature
10,014
0
Color Index (B-V)
0
Position
12
Right Ascension
7
2
Declination
-17
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Data sourced from HYG Database (Free for any purpose, including commercial).