IC 187

IC 187

IC 187 is a spiral galaxy in the constellation Triangulum about 241 million ly from Earth. It spans roughly 160,000 ly, about 1.6 times the width of our Milky Way. It is receding from us at about 5,102 km/s.

Illustration from its catalogued shape, not a photograph

Spiral
type · Sa
241 million ly
from Earth · from redshift
157k ly
across
13.8
apparent magnitude
5,102 km/s
receding (RC3)

Because its light is 241 million ly from home, you are seeing IC 187 as it looked roughly 241 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 188Spiral6.9 million ly
apart
NGC 765Spiral7.7 million ly
apart
NGC 780Barred spiral8.0 million ly
apart
IC 1764Barred spiral11 million ly
apart
NGC 776Spiral17 million ly
apart
IC 180Barred spiral17 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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