CFBDSIR 2149-0403

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Rappresentazione artistica del pianeta vagabondo (fonte: L. Calçada, P. Delorme, Nick Risinger, R. Saito, European Southern Observatory/VVV Consortium).

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.

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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