IC 728

IC 728

IC 728 is a barred spiral galaxy in the constellation Virgo about 397 million ly from Earth. It spans roughly 140,000 ly, about the width of our Milky Way. The light reaching us tonight left it about 397 million years ago.

Illustration from its catalogued shape, not a photograph

Barred spiral
type · Sb
397 million ly
from Earth · from redshift
138k ly
across
14.5
apparent magnitude

Because its light is 397 million ly from home, you are seeing IC 728 as it looked roughly 397 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 702Lenticular44 million ly
apart
NGC 3679Elliptical49 million ly
apart
NGC 3685Elliptical50 million ly
apart
NGC 3601Barred spiral70 million ly
apart
IC 2871Spiral76 million ly
apart
IC 774Lenticular77 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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