IC 4705

IC 4705

IC 4705 is a barred spiral galaxy in the constellation Pavo about 168 million ly from Earth. It spans roughly 85,000 ly, about 85% of our Milky Way's width. It is receding from us at about 2,948 km/s.

Illustration from its catalogued shape, not a photograph

Barred spiral
type · SBa
168 million ly
from Earth · from redshift
85k ly
across
12.8
apparent magnitude
2,948 km/s
receding (RC3)

Because its light is 168 million ly from home, you are seeing IC 4705 as it looked roughly 168 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 4704Elliptical2.2 million ly
apart
IC 4682Barred spiral2.8 million ly
apart
IC 4712Barred spiral6.7 million ly
apart
NGC 6392Spiral13 million ly
apart
NGC 6719Barred spiral16 million ly
apart
IC 4724Galaxy17 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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