IC 4391
IC 4391
Illustration from its catalogued shape, not a photograph
Spiral
type · Sab
135 million ly
from Earth · from redshift
38k ly
across
14.4
apparent magnitude
Because its light is 135 million ly from home, you are seeing IC 4391 as it looked roughly 135 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 4393Spiral1,000,000 ly
apartIC 4430Lenticular7.9 million ly
apartNGC 5464Barred spiral10 million ly
apartNGC 5494Spiral13 million ly
apartIC 4351Barred spiral14 million ly
apartIC 4323Barred spiral25 million ly
apart
Worlds in the same direction on the sky→apartIC 4430Lenticular7.9 million ly
apartNGC 5464Barred spiral10 million ly
apartNGC 5494Spiral13 million ly
apartIC 4351Barred spiral14 million ly
apartIC 4323Barred spiral25 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).