NGC 2454

NGC 2454 is a lenticular galaxy in the constellation Gemini about 226 million ly from Earth. It spans roughly 77,000 ly, about 77% of our Milky Way's width. The light reaching us tonight left it about 226 million years ago.

Because its light is 226 million ly from home, you are seeing NGC 2454 as it looked roughly 226 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).