IC 1231

IC 1231

IC 1231 is a spiral galaxy in the constellation Draco about 247 million ly from Earth. It spans roughly 140,000 ly, about the width of our Milky Way. It is receding from us at about 5,107 km/s.

Illustration from its catalogued shape, not a photograph

Spiral
type · Sc
247 million ly
from Earth · from redshift
135k ly
across
13.2
apparent magnitude
5,107 km/s
receding (RC3)

Because its light is 247 million ly from home, you are seeing IC 1231 as it looked roughly 247 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 6213Galaxy5.4 million ly
apart
NGC 6198Elliptical7.7 million ly
apart
NGC 6291Elliptical9.3 million ly
apart
NGC 6187Lenticular13 million ly
apart
NGC 6246Barred spiral13 million ly
apart
NGC 6206Lenticular13 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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