The Coronet Cluster, also known as the R CrA cluster after its best-known member, is a small open cluster located about 170 parsecs away in the southern constellation Corona Australis, isolated at the edge of the Gould Belt. The Coronet Cluster is 3.5 times closer to the Earth than the Orion Nebula Cluster. The cluster center is composed of mostly young stars. The variable T Coronae Australis is also a member, only one arc minute from R CrA.
|Observation data (J2000.0 epoch)|
|Right ascension||19h 1m 54s|
|Distance||420–550 ly (130–170 pc)|
|Apparent magnitude (V)||8|
|Apparent dimensions (V)||26 arcmin|
|Radius||2.1 light years|
|Estimated age||0.5–2 million years|
|Notable features||relative scarcity of circumstellar discs|
|Other designations||R CRA, G359.93-17.85 by BDB2003 catalog|
- "APOD - Coronet in the Southern Crown". Retrieved 2016-12-30.
- Sicilia-Aguilar, Aurora; Henning, Thomas; Juha´sz, Attila; Bouwman, Jeroen; Garmire, Gordon; Garmire, Audrey (10 November 2008). "VERY LOW MASS OBJECTS IN THE CORONET CLUSTER: THE REALM OF THE TRANSITION DISKS" (PDF). The Astrophysical Journal. 687 (2): 1145–1167. arXiv:0807.2504. Bibcode:2008ApJ...687.1145S. doi:10.1086/591932.
- "Coronet Cluster: A Neighbor of Star Formation (A region of star formation about 420 light years from Earth.)". Retrieved 10 Jan 2013.[permanent dead link]
- Sicilia-Aguilar, Aurora; Henning, Thomas; Linz, Hendrik; Krause, Oliver; André, Philippe (2012). "The star formation and disk evolution history of a sparse region: The Coronet cluster". Proceedings of the Symposium "From Atoms to Pebbles: Herschel's View of Star and Planet Formation": 29. Bibcode:2012faph.confE..29S.
- Media related to Coronet Cluster at Wikimedia Commons