IC 1870

IC 1870

IC 1870 is a spiral galaxy in the constellation Eridanus about 72 million ly from Earth. It spans roughly 32,000 ly, about 32% of our Milky Way's width. It is receding from us at about 1,467 km/s.

Illustration from its catalogued shape, not a photograph

Spiral
type · Sm
72 million ly
from Earth · from redshift
32k ly
across
13.5
apparent magnitude
1,467 km/s
receding (RC3)

Because its light is 72 million ly from home, you are seeing IC 1870 as it looked roughly 72 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 1087Spiral4.4 million ly
apart
NGC 1022Barred spiral8.6 million ly
apart
NGC 955Spiral8.7 million ly
apart
NGC 991Spiral9.3 million ly
apart
NGC 963Irregular9.3 million ly
apart
NGC 1052Elliptical9.4 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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