NGC 633

NGC 633

NGC 633 is a barred spiral galaxy in the constellation Sculptor about 240 million ly from Earth. It spans roughly 77,000 ly, about 77% of our Milky Way's width. It is receding from us at about 5,160 km/s.

Illustration from its catalogued shape, not a photograph

Barred spiral
type · SBb
240 million ly
from Earth · from redshift
77k ly
across
13.5
apparent magnitude
5,160 km/s
receding (RC3)

Because its light is 240 million ly from home, you are seeing NGC 633 as it looked roughly 240 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 597Barred spiral17 million ly
apart
IC 1734Spiral22 million ly
apart
NGC 527BBarred spiral23 million ly
apart
NGC 568Elliptical25 million ly
apart
NGC 526BLenticular27 million ly
apart
NGC 626Spiral28 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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