IC 1991
IC 1991
Illustration from its catalogued shape, not a photograph
Spiral
type · Sc
536 million ly
from Earth · from redshift
131k ly
across
16.2
apparent magnitude
Because its light is 536 million ly from home, you are seeing IC 1991 as it looked roughly 536 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 1989Elliptical17 million ly
apartIC 1958Spiral17 million ly
apartIC 1968Spiral18 million ly
apartIC 1950Spiral23 million ly
apartIC 1947Spiral24 million ly
apartNGC 1506Elliptical25 million ly
apart
Worlds in the same direction on the sky→apartIC 1958Spiral17 million ly
apartIC 1968Spiral18 million ly
apartIC 1950Spiral23 million ly
apartIC 1947Spiral24 million ly
apartNGC 1506Elliptical25 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).