NGC 4598

NGC 4598 is a lenticular galaxy in the constellation Virgo about 91 million ly from Earth. It spans roughly 40,000 ly, about 40% of our Milky Way's width. It is receding from us at about 1,961 km/s.

Because its light is 91 million ly from home, you are seeing NGC 4598 as it looked roughly 91 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).