IC 4730

IC 4730

IC 4730 is a lenticular galaxy in the constellation Pavo about 209 million ly from Earth. It spans roughly 87,000 ly, about the width of our Milky Way. The light reaching us tonight left it about 209 million years ago.

Illustration from its catalogued shape, not a photograph

Lenticular
type · S0-a
209 million ly
from Earth · from redshift
87k ly
across
14.5
apparent magnitude

Because its light is 209 million ly from home, you are seeing IC 4730 as it looked roughly 209 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 4731Lenticular2.6 million ly
apart
IC 4726Lenticular2.6 million ly
apart
IC 4727Elliptical2.7 million ly
apart
IC 4748Lenticular3.1 million ly
apart
IC 4765Elliptical3.5 million ly
apart
IC 4742Elliptical3.8 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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