how far from earth is 3C 273
Of these very bright objects, 3C 273 is the brightest in our skies. If it was located 30 light-years from our own planet â roughly seven times the distance between Earth and Proxima Centauri, the nearest star to us after the sun â it would still appear as bright as the sun in the sky.f these very bright objects, 3C 273 is the brightest in our skies. If it was located 30 light-years from our own planet â roughly seven times the distance between Earth and Proxima Centauri, the nearest star to us after the sun â it would still appear as bright as the sun in the sky.