IC 4618

IC 4618

IC 4618 is a barred spiral galaxy in the constellation Apus about 139 million ly from Earth. It spans roughly 69,000 ly, about 69% of our Milky Way's width. It is receding from us at about 3,017 km/s.

Illustration from its catalogued shape, not a photograph

Barred spiral
type · SBbc
139 million ly
from Earth · from redshift
69k ly
across
12.6
apparent magnitude
3,017 km/s
receding (RC3)

Because its light is 139 million ly from home, you are seeing IC 4618 as it looked roughly 139 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 4633Spiral2.8 million ly
apart
IC 4608Barred spiral3.0 million ly
apart
IC 4635Spiral3.3 million ly
apart
NGC 5967Spiral11 million ly
apart
NGC 5967ASpiral14 million ly
apart
IC 4555Barred spiral16 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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