IC 1173

IC 1173

IC 1173 is a spiral galaxy in the constellation Hercules about 487 million ly from Earth. It spans roughly 130,000 ly, about the width of our Milky Way. It is receding from us at about 10,871 km/s.

Illustration from its catalogued shape, not a photograph

Spiral
type · SABc
487 million ly
from Earth · from redshift
130k ly
across
14.6
apparent magnitude
10,871 km/s
receding (RC3)

Because its light is 487 million ly from home, you are seeing IC 1173 as it looked roughly 487 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 1186Barred spiral3.0 million ly
apart
IC 1185Spiral3.1 million ly
apart
IC 1178Elliptical9.2 million ly
apart
NGC 6055Elliptical10 million ly
apart
NGC 6054Elliptical11 million ly
apart
NGC 6039Elliptical11 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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