Andromeda
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Galaxy

NGC 7331

Also Caldwell 30

Open in OuranosCompare its size

A large spiral galaxy in Pegasus, often called a twin of the Milky Way.

Measured

Distance
45.9 million light-years
Size
about 140,000 light-years across (approximate)
Constellation
Pegasus
Position (J2000)
RA 22h 37m 04s, Dec +34.42°

How far, from the Sun

45.9 million light-years. To cross it:

  • Light45.9 million years
  • Voyager 1's speed815 billion years
  • Driving at 100 km/h495 trillion years

Voyager 1 at the speed it moved outward over the year to 2026-10-25 (JPL Horizons). Driving: nonstop, never refuelling.

Facts

  • It is the dominant galaxy of the Deer Lick Group, a chance grouping on the sky: the small galaxies beside it lie far behind it.
  • It is moving away from us at about 820 km/s (NASA/IPAC NED).

Where this comes from

  • Cosmicflows-3, Tully, Courtois & Sorce 2016, AJ 152, 50 (14.06 Mpc)
  • This research has made use of the SIMBAD database, CDS, Strasbourg, France (Wenger et al. 2000, A&AS 143, 9).
  • This research has made use of the VizieR catalogue access tool, CDS, Strasbourg, France (DOI: 10.26093/cds/vizier).

Every catalogue Ouranos draws is credited on the credits page.