IC 3618

IC 3618 is a lenticular galaxy in the constellation Coma Berenices about 306 million ly from Earth. It spans roughly 45,000 ly, about 45% of our Milky Way's width. It is receding from us at about 6,518 km/s.

Because its light is 306 million ly from home, you are seeing IC 3618 as it looked roughly 306 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).