IC 209

IC 209

IC 209 is a barred spiral galaxy in the constellation Cetus about 185 million ly from Earth. It spans roughly 81,000 ly, about 81% of our Milky Way's width. The light reaching us tonight left it about 185 million years ago.

Illustration from its catalogued shape, not a photograph

Barred spiral
type · SBbc
185 million ly
from Earth · from redshift
81k ly
across
13.8
apparent magnitude

Because its light is 185 million ly from home, you are seeing IC 209 as it looked roughly 185 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 829Barred spiral5.4 million ly
apart
NGC 830Elliptical6.1 million ly
apart
NGC 788Lenticular8.8 million ly
apart
NGC 842Lenticular8.9 million ly
apart
NGC 879Irregular9.1 million ly
apart
IC 183Lenticular9.8 million ly
apart
Worlds in the same direction on the sky

Source: structural data (position, morphology, brightness, redshift) from OpenNGC (CC BY-SA). Recession velocity from RC3 (de Vaucouleurs et al. 1991, via NASA/HEASARC, public domain). Distance computed by gravityfinder from redshift via Hubble's law (H0 = 70 km/s/Mpc).

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