IC 343

IC 343

IC 343 is a lenticular galaxy in the constellation Eridanus about 87 million ly from Earth. It spans roughly 38,000 ly, about 38% of our Milky Way's width. It is receding from us at about 1,869 km/s.

Illustration from its catalogued shape, not a photograph

Lenticular
type · S0-a
87 million ly
from Earth · from redshift
38k ly
across
13.2
apparent magnitude
1,869 km/s
receding (RC3)

Because its light is 87 million ly from home, you are seeing IC 343 as it looked roughly 87 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 1452Lenticular2.1 million ly
apart
NGC 1407Elliptical3.4 million ly
apart
IC 346Lenticular4.6 million ly
apart
NGC 1383Lenticular4.8 million ly
apart
IC 1953Spiral5.1 million ly
apart
IC 1962Barred spiral5.1 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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