NGC 1646

NGC 1646 is an elliptical galaxy in the constellation Eridanus about 224 million ly from Earth. It spans roughly 97,000 ly, about the width of our Milky Way. The light reaching us tonight left it about 224 million years ago.

Because its light is 224 million ly from home, you are seeing NGC 1646 as it looked roughly 224 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).