NGC 2807B

NGC 2807B is a lenticular galaxy in the constellation Cancer about 378 million ly from Earth. It spans roughly 90,000 ly, about the width of our Milky Way. The light reaching us tonight left it about 378 million years ago.

Because its light is 378 million ly from home, you are seeing NGC 2807B as it looked roughly 378 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).