NGC 1531

NGC 1531 is an elliptical galaxy in the constellation Eridanus about 49 million ly from Earth. It spans roughly 21,000 ly, about 21% of our Milky Way's width. It is receding from us at about 1,190 km/s.

Because its light is 49 million ly from home, you are seeing NGC 1531 as it looked roughly 49 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).