IC 101

IC 101

IC 101 is a barred spiral galaxy in the constellation Pisces about 111 million ly from Earth. It spans roughly 40,000 ly, about 40% of our Milky Way's width. The light reaching us tonight left it about 111 million years ago.

Illustration from its catalogued shape, not a photograph

Barred spiral
type · Sb
111 million ly
from Earth · from redshift
40k ly
across
15.0
apparent magnitude

Because its light is 111 million ly from home, you are seeing IC 101 as it looked roughly 111 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 524Lenticular2.4 million ly
apart
NGC 516Lenticular2.5 million ly
apart
NGC 532Spiral4.7 million ly
apart
IC 114Lenticular5.0 million ly
apart
NGC 502Lenticular5.1 million ly
apart
NGC 509Lenticular5.2 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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