NGC 3102

NGC 3102 is an elliptical galaxy in the constellation Ursa Major about 142 million ly from Earth. It spans roughly 40,000 ly, about 40% of our Milky Way's width. It is receding from us at about 3,065 km/s.

Because its light is 142 million ly from home, you are seeing NGC 3102 as it looked roughly 142 million years ago. The photons left before that much of history had passed, and are only now reaching us. This distance is estimated from the galaxy's redshift, so the lookback time is approximate.

Source: structural data (position, morphology, brightness, redshift) from OpenNGC (CC BY-SA). Recession velocity from RC3 (de Vaucouleurs et al. 1991, via NASA/HEASARC, public domain). Distance computed by gravityfinder from redshift via Hubble's law (H0 = 70 km/s/Mpc).