NGC 623
NGC 623 is an elliptical galaxy in the constellation Sculptor about 417 million ly from Earth. It spans roughly 240,000 ly, about 2.4 times the width of our Milky Way. It is receding from us at about 8,955 km/s.
Illustration from its catalogued shape, not a photograph
Because its light is 417 million ly from home, you are seeing NGC 623 as it looked roughly 417 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.
apartNGC 619Barred spiral20 million ly
apartNGC 572Lenticular26 million ly
apartIC 1728Barred spiral30 million ly
apartIC 1739Barred spiral32 million ly
apartNGC 698Spiral37 million ly
apart
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).