NGC 3658

NGC 3658 is a lenticular galaxy in the constellation Ursa Major about 95 million ly from Earth. It spans roughly 48,000 ly, about 48% of our Milky Way's width. It is receding from us at about 2,043 km/s.

Because its light is 95 million ly from home, you are seeing NGC 3658 as it looked roughly 95 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).