83 Leonis Bb

83 Leonis Bb, also catalogued as HD 99492 b or abbreviated 83 Leo Bb, is an extrasolar planet approximately 59 light-years away in the constellation of Leo (the Lion). The planet was discovered in January 2005 by the California and Carnegie Planet Search team, who use the Doppler spectroscopy method to detect planets.[2] It orbits in a close orbit around the star, completing one orbit in about 17 days.[1]

83 Leonis Bb

Discovery
Discovered by	Marcy, Butler, Vogt et al.
Discovery site	United States
Discovery date	25 January 2005
Detection method	Doppler spectroscopy
Orbital characteristics
Semi-major axis	0.12186 ± 0.00002 AU (18,230,000 ± 3,000 km)[1]
Eccentricity	0.13 ± 0.07[1]
Orbital period	17.054 ± 0.003[1] d
Time of periastron	2,450,449 ± 2[1]
Argument of periastron	196 ± 32[1]
Semi-amplitude	7.9 ± 0.6[1]
Star	83 Leonis B

References

1. Meschiari, Stefano; et al. (2011). "The Lick-Carnegie Survey: Four New Exoplanet Candidates". The Astrophysical Journal. 727 (2). 117. arXiv:1011.4068. Bibcode:2011ApJ...727..117M. doi:10.1088/0004-637X/727/2/117.
2. Marcy, Geoffrey W.; et al. (2005). "Five New Extrasolar Planets". The Astrophysical Journal. 619 (1): 570–584. Bibcode:2005ApJ...619..570M. doi:10.1086/426384.

External links

• "83 Leonis AB". SolStation. Archived from the original on 25 July 2008. Retrieved 2008-06-20.
• "Notes for planet HD 99492 b". The Extrasolar Planets Encyclopaedia. Retrieved 2008-06-20.