IC 984

IC 984

IC 984 is a barred spiral galaxy in the constellation Boötes about 238 million ly from Earth. It spans roughly 130,000 ly, about the width of our Milky Way. It is receding from us at about 5,116 km/s.

Illustration from its catalogued shape, not a photograph

Barred spiral
type · Sb
238 million ly
from Earth · from redshift
131k ly
across
14.4
apparent magnitude
5,116 km/s
receding (RC3)

Because its light is 238 million ly from home, you are seeing IC 984 as it looked roughly 238 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
NGC 5490Elliptical7.0 million ly
apart
NGC 5513Lenticular10 million ly
apart
NGC 5504Barred spiral11 million ly
apart
NGC 5504BBarred spiral12 million ly
apart
NGC 5504CSpiral13 million ly
apart
IC 983Barred spiral16 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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