NGC 7420

NGC 7420

NGC 7420 is a barred spiral galaxy in the constellation Pegasus about 441 million ly from Earth. It spans roughly 110,000 ly, about the width of our Milky Way. The light reaching us tonight left it about 441 million years ago.

Illustration from its catalogued shape, not a photograph

Barred spiral
type · Sb
441 million ly
from Earth · from redshift
109k ly
across
14.9
apparent magnitude

Because its light is 441 million ly from home, you are seeing NGC 7420 as it looked roughly 441 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 7439Lenticular6.3 million ly
apart
NGC 7487Elliptical23 million ly
apart
NGC 7336Spiral51 million ly
apart
NGC 7620Spiral61 million ly
apart
NGC 7568Barred spiral71 million ly
apart
IC 5298Barred spiral74 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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