NGC 4054 NED03

NGC 4054 NED03 is a lenticular galaxy in the constellation Ursa Major about 480 million ly from Earth. It spans roughly 87,000 ly, about the width of our Milky Way. The light reaching us tonight left it about 480 million years ago.

Because its light is 480 million ly from home, you are seeing NGC 4054 NED03 as it looked roughly 480 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).