NGC 3563A

NGC 3563A is a lenticular galaxy in the constellation Leo about 501 million ly from Earth. It spans roughly 85,000 ly, about 85% of our Milky Way's width. The light reaching us tonight left it about 501 million years ago.

Because its light is 501 million ly from home, you are seeing NGC 3563A as it looked roughly 501 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).