IC 645
IC 645
Illustration from its catalogued shape, not a photograph
Galaxy
morphology
307 million ly
from Earth · from redshift
43k ly
across
15.4
apparent magnitude
Because its light is 307 million ly from home, you are seeing IC 645 as it looked roughly 307 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.
Nearest galaxies
NGC 3541Spiral36 million ly
apartNGC 3635Spiral48 million ly
apartNGC 3638Barred spiral49 million ly
apartIC 690Spiral52 million ly
apartIC 632Barred spiral53 million ly
apartNGC 3688Barred spiral53 million ly
apart
Worlds in the same direction on the sky→apartNGC 3635Spiral48 million ly
apartNGC 3638Barred spiral49 million ly
apartIC 690Spiral52 million ly
apartIC 632Barred spiral53 million ly
apartNGC 3688Barred spiral53 million ly
apart
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).