NGC 7173

NGC 7173

NGC 7173 is an elliptical galaxy in the constellation Piscis Austrinus about 126 million ly from Earth. It spans roughly 69,000 ly, about 69% of our Milky Way's width. It is receding from us at about 2,499 km/s.

Illustration from its catalogued shape, not a photograph

Elliptical
type · E
126 million ly
from Earth · from redshift
69k ly
across
12.0
apparent magnitude
2,499 km/s
receding (RC3)

Because its light is 126 million ly from home, you are seeing NGC 7173 as it looked roughly 126 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 7187Lenticular2.6 million ly
apart
NGC 7174Barred spiral3.9 million ly
apart
IC 5156Barred spiral4.3 million ly
apart
NGC 7172Spiral5.7 million ly
apart
NGC 7204ABarred spiral5.8 million ly
apart
NGC 7204BLenticular5.8 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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