NGC 7539

NGC 7539

NGC 7539 is a lenticular galaxy in the constellation Pegasus about 282 million ly from Earth. It spans roughly 95,000 ly, about the width of our Milky Way. It is receding from us at about 6,048 km/s.

Illustration from its catalogued shape, not a photograph

Lenticular
type · S0
282 million ly
from Earth · from redshift
95k ly
across
12.9
apparent magnitude
6,048 km/s
receding (RC3)

Because its light is 282 million ly from home, you are seeing NGC 7539 as it looked roughly 282 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
IC 5285Lenticular11 million ly
apart
NGC 7489Spiral13 million ly
apart
IC 5282Spiral17 million ly
apart
NGC 7660Elliptical26 million ly
apart
IC 5329Spiral28 million ly
apart
IC 5331Spiral29 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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