IC 2947

IC 2947

IC 2947 is a barred spiral galaxy in the constellation Ursa Major about 592 million ly from Earth. It spans roughly 130,000 ly, about the width of our Milky Way. It is receding from us at about 12,730 km/s.

Illustration from its catalogued shape, not a photograph

Barred spiral
type · SBm
592 million ly
from Earth · from redshift
129k ly
across
14.2
apparent magnitude
12,730 km/s
receding (RC3)

Because its light is 592 million ly from home, you are seeing IC 2947 as it looked roughly 592 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 2738Elliptical96 million ly
apart
NGC 3534BBarred spiral98 million ly
apart
IC 2744Elliptical100 million ly
apart
IC 2626Barred spiral100 million ly
apart
IC 2735Spiral100 million ly
apart
IC 2612Elliptical100 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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