NGC 1158

NGC 1158 is a lenticular galaxy in the constellation Eridanus about 394 million ly from Earth. It spans roughly 110,000 ly, about the width of our Milky Way. The light reaching us tonight left it about 394 million years ago.

Because its light is 394 million ly from home, you are seeing NGC 1158 as it looked roughly 394 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).