NGC 973

NGC 973

NGC 973 is a barred spiral galaxy in the constellation Triangulum about 234 million ly from Earth. It spans roughly 220,000 ly, about 2.2 times the width of our Milky Way. The light reaching us tonight left it about 234 million years ago.

Illustration from its catalogued shape, not a photograph

Barred spiral
type · Sb
234 million ly
from Earth · from redshift
223k ly
across
13.6
apparent magnitude

Because its light is 234 million ly from home, you are seeing NGC 973 as it looked roughly 234 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 940Lenticular8.3 million ly
apart
NGC 931Barred spiral9.0 million ly
apart
IC 1823Spiral9.0 million ly
apart
NGC 1060Elliptical11 million ly
apart
NGC 978AElliptical14 million ly
apart
IC 1815Lenticular15 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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