NGC 5342

NGC 5342 is a lenticular galaxy in the constellation Ursa Major about 103 million ly from Earth. It spans roughly 28,000 ly, about 28% of our Milky Way's width. It is receding from us at about 2,211 km/s.

Because its light is 103 million ly from home, you are seeing NGC 5342 as it looked roughly 103 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).