NGC 2643

NGC 2643 is a lenticular galaxy in the constellation Cancer about 213 million ly from Earth. It spans roughly 42,000 ly, about 42% of our Milky Way's width. The light reaching us tonight left it about 213 million years ago.

Because its light is 213 million ly from home, you are seeing NGC 2643 as it looked roughly 213 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).