IC 3598

IC 3598 is a spiral galaxy in the constellation Coma Berenices about 356 million ly from Earth. It spans roughly 150,000 ly, about the width of our Milky Way. It is receding from us at about 7,626 km/s.

Because its light is 356 million ly from home, you are seeing IC 3598 as it looked roughly 356 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).