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Dark nebula

The Corona Australis Cloud

Also Corona Australis molecular cloud · R CrA cloud

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A nearby dark cloud forming young stars around the variable star R Coronae Australis.

Measured

Distance
about 506 light-years (published estimates 479–538)
Constellation
Corona Australis
Position (J2000)
RA 19h 13m 59s, Dec −37.00°

How far, from the Sun

About 506 light-years. To cross it:

  • Light506 years
  • Voyager 1's speed8.98 million years
  • Driving at 100 km/h5.46 billion 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 one of the closest regions of active star formation to the Sun.
  • Its distance comes from where stars behind it start to look dimmed and reddened by its dust, measured with Gaia.

Where this comes from

  • Zucker et al. 2020, A&A 633, A51 (155 pc on the sightline used; their sightlines across the cloud span 147–165 pc)
  • 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.