NGC 7639

NGC 7639 is an elliptical galaxy in the constellation Pegasus about 375 million ly from Earth. It spans roughly 81,000 ly, about 81% of our Milky Way's width. The light reaching us tonight left it about 375 million years ago.

Because its light is 375 million ly from home, you are seeing NGC 7639 as it looked roughly 375 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).