NGC 5126

NGC 5126 is a lenticular galaxy in the constellation Centaurus about 215 million ly from Earth. It spans roughly 120,000 ly, about the width of our Milky Way. It is receding from us at about 4,706 km/s.

Because its light is 215 million ly from home, you are seeing NGC 5126 as it looked roughly 215 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).