IC 3654

IC 3654 is an elliptical galaxy in the constellation Coma Berenices about 397 million ly from Earth. It spans roughly 45,000 ly, about 45% of our Milky Way's width. The light reaching us tonight left it about 397 million years ago.

Because its light is 397 million ly from home, you are seeing IC 3654 as it looked roughly 397 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). Distance computed by gravityfinder from redshift via Hubble's law (H0 = 70 km/s/Mpc).