IC 1803

IC 1803 is an elliptical galaxy in the constellation Aries about 449 million ly from Earth. It spans roughly 60,000 ly, about 60% of our Milky Way's width. The light reaching us tonight left it about 449 million years ago.

Because its light is 449 million ly from home, you are seeing IC 1803 as it looked roughly 449 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).