CFBDSIR 2149-0403
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| + | [[Immagine:Eridanus_epsilon_location.png|thumb|right|200px|Rappresentazione artistica del pianeta vagabondo (fonte: L. Calçada, P. Delorme, Nick Risinger, R. Saito, European Southern Observatory/VVV Consortium).]] | ||
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'''CFBDSIR 2149-0403''' (full designation '''CFBDSIR J214947.2-040308.9''') is a [[brown dwarf]] and probable [[rogue planet]],<ref name="bbc">{{cite web|title='Rogue planet' spotted 100 light-years away|url=http://www.bbc.co.uk/news/science-environment-20309762|publisher=BBC|accessdate=14 November 2012|date=14 November 2012}}</ref> likely (with 87% probability) part of the [[AB Doradus moving group]] as indicated by its position and [[proper motion]].<ref name="Delorme2012"></ref><ref name="bbc"></ref> Its age is estimated to be between 20 and 200 million years.<ref name="Delorme2012"></ref> | '''CFBDSIR 2149-0403''' (full designation '''CFBDSIR J214947.2-040308.9''') is a [[brown dwarf]] and probable [[rogue planet]],<ref name="bbc">{{cite web|title='Rogue planet' spotted 100 light-years away|url=http://www.bbc.co.uk/news/science-environment-20309762|publisher=BBC|accessdate=14 November 2012|date=14 November 2012}}</ref> likely (with 87% probability) part of the [[AB Doradus moving group]] as indicated by its position and [[proper motion]].<ref name="Delorme2012"></ref><ref name="bbc"></ref> Its age is estimated to be between 20 and 200 million years.<ref name="Delorme2012"></ref> | ||
Versione delle 10:44, 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]
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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
- ↑ 1,0 1,1 Template:Cite web
- ↑ Errore nella funzione Cite: Marcatore
<ref>non valido; non è stato indicato alcun testo per il marcatoreDelorme2012 - ↑ Template:Cite web
