IC 5101

IC 5101

IC 5101 is a barred spiral galaxy in the constellation Pavo about 240 million ly from Earth. It spans roughly 77,000 ly, about 77% of our Milky Way's width. It is receding from us at about 5,166 km/s.

Illustration from its catalogued shape, not a photograph

Barred spiral
type · SBc
240 million ly
from Earth · from redshift
77k ly
across
13.3
apparent magnitude
5,166 km/s
receding (RC3)

Because its light is 240 million ly from home, you are seeing IC 5101 as it looked roughly 240 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 5100Barred spiral1.2 million ly
apart
IC 5107Spiral3.0 million ly
apart
IC 5142Spiral20 million ly
apart
IC 5074Spiral24 million ly
apart
IC 5147Spiral27 million ly
apart
IC 4970Elliptical36 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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