NGC 4578

NGC 4578 is a lenticular galaxy in the constellation Virgo about 106 million ly from Earth. It spans roughly 77,000 ly, about 77% of our Milky Way's width. It is receding from us at about 2,287 km/s.

Because its light is 106 million ly from home, you are seeing NGC 4578 as it looked roughly 106 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).