CFBDSIR 2149−0403
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| File:Eso1245b.jpg The small dim blue dot in the center of this image (click to enlarge) is captured by the SOFI instrument on ESO’s New Technology Telescope at the La Silla Observatory and shows the free-floating planet CFBDSIR J214947.2-040308.9, in infrared light. | |
| Discovery[1] | |
|---|---|
| Discovered by | Delorme et al. |
| CFBDSIR wide field survey | |
| Physical characteristics | |
| Mass | 4-7 Jupiter masses |
| Temperature | ~700 K |
Spectral type | late T dwarf |
CFBDSIR 2149-0403 (full designation CFBDSIR J214947.2-040308.9) is a brown dwarf and probable rogue planet,[2] likely (with 87% probability) part of the AB Doradus moving group (ABDMG) as indicated by its position and proper motion.[1][2]
Discovery
CFBDSIR 2149-0403 has been discovered by the Canada-France Brown Dwarfs Survey, a near infrared sky survey, and confirmed by WISE data.[1]
Distance
As of November 2012, this rogue planet is the closest that has ever been spotted.[3] If the object belongs to the ABDMG 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.[1]
Age
CFBDSIR 2149-0403 age is estimated to be between 20 and 200 million years. If it belongs to the ABDMG then its age can be constrained between 50 and 120 million years.[1]
Atmosphere
Spectroscopy observations have found absorption by gaseous methane and water.[1]
References
- ^ a b c d e f Delorme, P. (2012). "CFBDSIR2149-0403: a 4-7 Jupiter-mass free-floating planet in the young moving group AB Doradus ?". Astronomy & Astrophysics. arXiv:1210.0305.
{{cite journal}}:|access-date=requires|url=(help); Unknown parameter|coauthors=ignored (|author=suggested) (help) - ^ a b "'Rogue planet' spotted 100 light-years away". BBC. 14 November 2012. Retrieved 14 November 2012.
- ^ "Astronomers find 'homeless' planet wandering through space". Phys.org. 14 November 2012. Retrieved 14 November 2012.
Further reading
- Wall, Mike (14 November 2012). "'Orphan' Alien Planet Found Nearby Without Parent Star". Space.com. Retrieved 14 November 2012.
- "Lost in Space: Rogue Planet Spotted?". ESO. 14 November 2012. Retrieved 14 November 2012.
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