IC 4687

IC 4687

IC 4687 is a spiral galaxy in the constellation Pavo about 244 million ly from Earth. It spans roughly 82,000 ly, about 82% of our Milky Way's width. It is receding from us at about 5,188 km/s.

Illustration from its catalogued shape, not a photograph

Spiral
type · SABb
244 million ly
from Earth · from redshift
82k ly
across
14.3
apparent magnitude
5,188 km/s
receding (RC3)

Because its light is 244 million ly from home, you are seeing IC 4687 as it looked roughly 244 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 4689Spiral3.9 million ly
apart
IC 4709Spiral11 million ly
apart
IC 4686Galaxy12 million ly
apart
IC 4692Barred spiral17 million ly
apart
IC 4722Spiral21 million ly
apart
IC 4672Spiral23 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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