IC 156
IC 156
Illustration from its catalogued shape, not a photograph
Spiral
type · Sa
250 million ly
from Earth · from redshift
110k ly
across
14.9
apparent magnitude
Because its light is 250 million ly from home, you are seeing IC 156 as it looked roughly 250 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 665Lenticular2.4 million ly
apartIC 161Lenticular3.5 million ly
apartIC 154Barred spiral8.5 million ly
apartNGC 683Barred spiral8.8 million ly
apartIC 1723Barred spiral10 million ly
apartNGC 673Spiral11 million ly
apart
Worlds in the same direction on the sky→apartIC 161Lenticular3.5 million ly
apartIC 154Barred spiral8.5 million ly
apartNGC 683Barred spiral8.8 million ly
apartIC 1723Barred spiral10 million ly
apartNGC 673Spiral11 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).