NGC 4104

NGC 4104 is a lenticular galaxy in the constellation Coma Berenices about 400 million ly from Earth. It spans roughly 290,000 ly, about 2.9 times the width of our Milky Way. It is receding from us at about 8,207 km/s.

Because its light is 400 million ly from home, you are seeing NGC 4104 as it looked roughly 400 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). Recession velocity from RC3 (de Vaucouleurs et al. 1991, via NASA/HEASARC, public domain). Distance computed by gravityfinder from redshift via Hubble's law (H0 = 70 km/s/Mpc).