NGC 170

NGC 170 is an elliptical galaxy in the constellation Cetus about 199 million ly from Earth. It spans roughly 41,000 ly, about 41% of our Milky Way's width. The light reaching us tonight left it about 199 million years ago.

Because its light is 199 million ly from home, you are seeing NGC 170 as it looked roughly 199 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).