NGC 5584

NGC 5584 is a spiral galaxy in the constellation Virgo about 77 million ly from Earth. It spans roughly 70,000 ly, about 70% of our Milky Way's width. It is receding from us at about 1,602 km/s.

Because its light is 77 million ly from home, you are seeing NGC 5584 as it looked roughly 77 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).