NGC 7181

NGC 7181

NGC 7181 is a lenticular galaxy in the constellation Aquarius about 368 million ly from Earth. It spans roughly 78,000 ly, about 78% of our Milky Way's width. The light reaching us tonight left it about 368 million years ago.

Illustration from its catalogued shape, not a photograph

Lenticular
type · S0
368 million ly
from Earth · from redshift
78k ly
across
15.4
apparent magnitude

Because its light is 368 million ly from home, you are seeing NGC 7181 as it looked roughly 368 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 7182Lenticular10 million ly
apart
IC 1411Elliptical11 million ly
apart
IC 1410Elliptical14 million ly
apart
IC 1403Galaxy26 million ly
apart
NGC 7170Elliptical29 million ly
apart
NGC 7239Elliptical29 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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