CFBDSIR 2149-0403

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*{{cite web|last=Wall|first=Mike|title='Orphan' Alien Planet Found Nearby Without Parent Star|url=http://www.space.com/18461-rogue-alien-planet-discovery.html|publisher=Space.com|accessdate=14 November 2012|date=14 November 2012}}
*{{cite web|last=Wall|first=Mike|title='Orphan' Alien Planet Found Nearby Without Parent Star|url=http://www.space.com/18461-rogue-alien-planet-discovery.html|publisher=Space.com|accessdate=14 November 2012|date=14 November 2012}}
*{{cite web|title=Lost in Space: Rogue Planet Spotted?|url=http://www.eso.org/public/news/eso1245/|publisher=ESO|accessdate=14 November 2012|date=14 November 2012}}
*{{cite web|title=Lost in Space: Rogue Planet Spotted?|url=http://www.eso.org/public/news/eso1245/|publisher=ESO|accessdate=14 November 2012|date=14 November 2012}}
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Versione delle 10:41, 15 nov 2012

CFBDSIR 2149-0403 (full designation CFBDSIR J214947.2-040308.9) is a brown dwarf and probable rogue planet,[1] likely (with 87% probability) part of the AB Doradus moving group as indicated by its position and proper motion.[2][1] Its age is estimated to be between 20 and 200 million years.[2]

Indice

Discovery

CFBDSIR 2149-0403 has been discovered by the Canada-France Brown Dwarfs Survey, a near infrared sky survey, and confirmed by WISE data.[2]

Distance

As of November 2012, this rogue planet is the closest that has ever been spotted.[3] If the object belongs to the AB Doradus moving group then its distance is estimated to be 40±4 parsecs (130±13 light years) from Earth; other possible estimates range from 25 to 50 parsecs.[2]

Atmosphere

Spectroscopy observations have found absorption by gaseous methane and water.[2]

References

  1. 1,0 1,1 Template:Cite web
  2. Errore nella funzione Cite: Marcatore <ref> non valido; non è stato indicato alcun testo per il marcatore Delorme2012
  3. Template:Cite web

Further reading

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