IC 391

IC 391 is a spiral galaxy in the constellation Camelopardalis about 73 million ly from Earth. It spans roughly 30,000 ly, about 30% of our Milky Way's width. It is receding from us at about 1,574 km/s.

Because its light is 73 million ly from home, you are seeing IC 391 as it looked roughly 73 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).