IC 1423

IC 1423

IC 1423 is a barred spiral galaxy in the constellation Pegasus about 380 million ly from Earth. It spans roughly 100,000 ly, about the width of our Milky Way. The light reaching us tonight left it about 380 million years ago.

Illustration from its catalogued shape, not a photograph

Barred spiral
type · Sb
380 million ly
from Earth · from redshift
102k ly
across
14.8
apparent magnitude

Because its light is 380 million ly from home, you are seeing IC 1423 as it looked roughly 380 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 1418Barred spiral8.8 million ly
apart
IC 5151Galaxy15 million ly
apart
IC 1406Elliptical25 million ly
apart
NGC 7149Elliptical29 million ly
apart
IC 1407Elliptical31 million ly
apart
IC 1405Spiral31 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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