IC 18
IC 18
Illustration from its catalogued shape, not a photograph
Barred spiral
type · Sb
286 million ly
from Earth · from redshift
90k ly
across
15.0
apparent magnitude
Because its light is 286 million ly from home, you are seeing IC 18 as it looked roughly 286 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 23Elliptical6.3 million ly
apartNGC 155Lenticular8.9 million ly
apartIC 22Lenticular13 million ly
apartIC 19Elliptical14 million ly
apartNGC 166Spiral14 million ly
apartNGC 163Elliptical15 million ly
apart
Worlds in the same direction on the sky→apartNGC 155Lenticular8.9 million ly
apartIC 22Lenticular13 million ly
apartIC 19Elliptical14 million ly
apartNGC 166Spiral14 million ly
apartNGC 163Elliptical15 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).