NGC 783

NGC 783

NGC 783 is a spiral galaxy in the constellation Triangulum about 242 million ly from Earth. It spans roughly 97,000 ly, about the width of our Milky Way. It is receding from us at about 5,110 km/s.

Illustration from its catalogued shape, not a photograph

Spiral
type · Sc
242 million ly
from Earth · from redshift
97k ly
across
12.7
apparent magnitude
5,110 km/s
receding (RC3)

Because its light is 242 million ly from home, you are seeing NGC 783 as it looked roughly 242 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 789Barred spiral3.0 million ly
apart
IC 200Barred spiral6.3 million ly
apart
NGC 804Lenticular6.9 million ly
apart
NGC 798Elliptical7.0 million ly
apart
NGC 750Elliptical7.1 million ly
apart
NGC 777Elliptical8.7 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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