NGC 846

NGC 846

NGC 846 is a barred spiral galaxy in the constellation Andromeda about 237 million ly from Earth. It spans roughly 130,000 ly, about the width of our Milky Way. It is receding from us at about 4,894 km/s.

Illustration from its catalogued shape, not a photograph

Barred spiral
type · SBab
237 million ly
from Earth · from redshift
132k ly
across
13.1
apparent magnitude
4,894 km/s
receding (RC3)

Because its light is 237 million ly from home, you are seeing NGC 846 as it looked roughly 237 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 812Spiral8.4 million ly
apart
IC 1799Spiral14 million ly
apart
NGC 913Galaxy15 million ly
apart
NGC 909Elliptical16 million ly
apart
NGC 910Elliptical18 million ly
apart
NGC 898Spiral22 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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