NGC 6458

NGC 6458 is a lenticular galaxy in the constellation Hercules about 149 million ly from Earth. It spans roughly 47,000 ly, about 47% of our Milky Way's width. It is receding from us at about 3,200 km/s.

Because its light is 149 million ly from home, you are seeing NGC 6458 as it looked roughly 149 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).