IC 4644
IC 4644
Illustration from its catalogued shape, not a photograph
Barred spiral
type · Sb
230 million ly
from Earth · from redshift
117k ly
across
15.5
apparent magnitude
Because its light is 230 million ly from home, you are seeing IC 4644 as it looked roughly 230 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 4661Spiral7.7 million ly
apartIC 4654Spiral13 million ly
apartNGC 6183Spiral23 million ly
apartIC 4640Spiral25 million ly
apartIC 4647Lenticular26 million ly
apartNGC 6653Elliptical26 million ly
apart
Worlds in the same direction on the sky→apartIC 4654Spiral13 million ly
apartNGC 6183Spiral23 million ly
apartIC 4640Spiral25 million ly
apartIC 4647Lenticular26 million ly
apartNGC 6653Elliptical26 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).