IC 1938

IC 1938

IC 1938 is a barred spiral galaxy in the constellation Horologium about 423 million ly from Earth. It spans roughly 100,000 ly, about the width of our Milky Way. It is receding from us at about 9,110 km/s.

Illustration from its catalogued shape, not a photograph

Barred spiral
type · Sb
423 million ly
from Earth · from redshift
101k ly
across
15.5
apparent magnitude
9,110 km/s
receding (RC3)

Because its light is 423 million ly from home, you are seeing IC 1938 as it looked roughly 423 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 1912Spiral25 million ly
apart
IC 2021Barred spiral37 million ly
apart
IC 1908Barred spiral40 million ly
apart
IC 1960Spiral51 million ly
apart
IC 2028Spiral54 million ly
apart
IC 2023Spiral56 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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