IC 4522

IC 4522

IC 4522 is a barred spiral galaxy in the constellation Apus about 134 million ly from Earth. It spans roughly 120,000 ly, about the width of our Milky Way. The light reaching us tonight left it about 134 million years ago.

Illustration from its catalogued shape, not a photograph

Barred spiral
type · Sb
134 million ly
from Earth · from redshift
117k ly
across
13.1
apparent magnitude

Because its light is 134 million ly from home, you are seeing IC 4522 as it looked roughly 134 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 5967Spiral5.6 million ly
apart
NGC 5967ASpiral6.2 million ly
apart
NGC 5612Spiral8.9 million ly
apart
IC 4555Barred spiral10 million ly
apart
NGC 5833Barred spiral11 million ly
apart
NGC 5799Lenticular13 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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