IC 4320

IC 4320

IC 4320 is a lenticular galaxy in the constellation Hydra about 315 million ly from Earth. It spans roughly 120,000 ly, about the width of our Milky Way. It is receding from us at about 6,818 km/s.

Illustration from its catalogued shape, not a photograph

Lenticular
type · S0-a
315 million ly
from Earth · from redshift
120k ly
across
14.3
apparent magnitude
6,818 km/s
receding (RC3)

Because its light is 315 million ly from home, you are seeing IC 4320 as it looked roughly 315 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 4298Spiral10 million ly
apart
NGC 5260Spiral22 million ly
apart
IC 4374Elliptical30 million ly
apart
IC 4350Lenticular35 million ly
apart
NGC 5495Spiral35 million ly
apart
NGC 5393Barred spiral40 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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