NGC 7366

NGC 7366 is a galaxy in the constellation Pegasus about 542 million ly from Earth. It spans roughly 54,000 ly, about 54% of our Milky Way's width. The light reaching us tonight left it about 542 million years ago.

Because its light is 542 million ly from home, you are seeing NGC 7366 as it looked roughly 542 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).