IC 4939
IC 4939
Illustration from its catalogued shape, not a photograph
Spiral
type · Sc
174 million ly
from Earth · from redshift
37k ly
across
15.1
apparent magnitude
Because its light is 174 million ly from home, you are seeing IC 4939 as it looked roughly 174 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
IC 4906Elliptical4.2 million ly
apartIC 4938Barred spiral6.2 million ly
apartIC 4936Barred spiral9.2 million ly
apartIC 4968Barred spiral17 million ly
apartNGC 6776ABarred spiral18 million ly
apartNGC 6769Spiral19 million ly
apart
Worlds in the same direction on the sky→apartIC 4938Barred spiral6.2 million ly
apartIC 4936Barred spiral9.2 million ly
apartIC 4968Barred spiral17 million ly
apartNGC 6776ABarred spiral18 million ly
apartNGC 6769Spiral19 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).