NGC 803

NGC 803

NGC 803 is a spiral galaxy in the constellation Aries about 98 million ly from Earth. It spans roughly 76,000 ly, about 76% of our Milky Way's width. The light reaching us tonight left it about 98 million years ago.

Illustration from its catalogued shape, not a photograph

Spiral
type · Sc
98 million ly
from Earth · from redshift
76k ly
across
12.4
apparent magnitude

Because its light is 98 million ly from home, you are seeing NGC 803 as it looked roughly 98 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 473Lenticular18 million ly
apart
NGC 821Elliptical18 million ly
apart
NGC 772Barred spiral19 million ly
apart
NGC 525Lenticular20 million ly
apart
IC 114Lenticular21 million ly
apart
NGC 532Spiral22 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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