NGC 4829

NGC 4829 is an elliptical galaxy in the constellation Virgo about 181 million ly from Earth. It spans roughly 31,000 ly, about 31% of our Milky Way's width. The light reaching us tonight left it about 181 million years ago.

Because its light is 181 million ly from home, you are seeing NGC 4829 as it looked roughly 181 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). Distance computed by gravityfinder from redshift via Hubble's law (H0 = 70 km/s/Mpc).