NGC 7738

NGC 7738

NGC 7738 is a barred spiral galaxy in the constellation Pisces about 316 million ly from Earth. It spans roughly 110,000 ly, about the width of our Milky Way. It is receding from us at about 6,771 km/s.

Illustration from its catalogued shape, not a photograph

Barred spiral
type · Sb
316 million ly
from Earth · from redshift
109k ly
across
14.2
apparent magnitude
6,771 km/s
receding (RC3)

Because its light is 316 million ly from home, you are seeing NGC 7738 as it looked roughly 316 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 7739Elliptical8.5 million ly
apart
NGC 7746Lenticular15 million ly
apart
IC 5352Lenticular17 million ly
apart
NGC 7787Lenticular18 million ly
apart
IC 5357Elliptical19 million ly
apart
IC 1515Barred spiral19 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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