NGC 6170

NGC 6170 is an elliptical galaxy in the constellation Draco about 429 million ly from Earth. It spans roughly 100,000 ly, about the width of our Milky Way. The light reaching us tonight left it about 429 million years ago.

Because its light is 429 million ly from home, you are seeing NGC 6170 as it looked roughly 429 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).