NGC 6156

NGC 6156 is a spiral galaxy in the constellation Triangulum Australe about 153 million ly from Earth. It spans roughly 83,000 ly, about 83% of our Milky Way's width. It is receding from us at about 3,250 km/s.

Because its light is 153 million ly from home, you are seeing NGC 6156 as it looked roughly 153 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).