NGC 6687

NGC 6687 is a spiral galaxy in the constellation Draco about 157 million ly from Earth. It spans roughly 57,000 ly, about 57% of our Milky Way's width. The light reaching us tonight left it about 157 million years ago.

Because its light is 157 million ly from home, you are seeing NGC 6687 as it looked roughly 157 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).