NGC 6799

NGC 6799 is an elliptical galaxy in the constellation Telescopium about 159 million ly from Earth. It spans roughly 85,000 ly, about 85% of our Milky Way's width. It is receding from us at about 5,990 km/s.

Because its light is 159 million ly from home, you are seeing NGC 6799 as it looked roughly 159 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).