IC 401

IC 401

IC 401 is a barred spiral galaxy in the constellation Eridanus about 157 million ly from Earth. It spans roughly 80,000 ly, about 80% of our Milky Way's width. It is receding from us at about 3,286 km/s.

Illustration from its catalogued shape, not a photograph

Barred spiral
type · SBb
157 million ly
from Earth · from redshift
80k ly
across
13.9
apparent magnitude
3,286 km/s
receding (RC3)

Because its light is 157 million ly from home, you are seeing IC 401 as it looked roughly 157 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 402Spiral3.0 million ly
apart
NGC 1779Lenticular5.3 million ly
apart
NGC 1752Spiral12 million ly
apart
IC 400Galaxy17 million ly
apart
NGC 1723Spiral18 million ly
apart
IC 415Galaxy19 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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