OGLE-2005-BLG-071Lb

OGLE-2005-BLG-071Lb

Exoplanet		List of exoplanets
Parent star
Star		OGLE-2005-BLG-071L
Constellation		Scorpius
Right ascension	(α)	17^h 50^m 09^s
Declination	(δ)	–34° 40′ 23″
Distance		approx. 11000 ly (approx. 3300 pc)
Spectral type		M?
Observed separation
Projected separation	(d)	3.6 ± 0.2 or 2.1 ± 0.1 AU
Physical characteristics
Mass	(m)	3.8 +0.3 −0.4 or 3.4 ± 0.3 MJ
Discovery information
Discovery date		27 May 2005
Discoverer(s)		Udalski et al.
Discovery method		Gravitational microlensing
Discovery status		Published
Other designations
EWS 2005-BUL-071Lb, EWS 2005-BLG-071Lb
Database references
Extrasolar Planets Encyclopaedia		data
SIMBAD		data
Exoplanet Archive		data
Open Exoplanet Catalogue		data

OGLE-2005-BLG-071Lb is a planet discovered by the Optical Gravitational Lensing Experiment (OGLE) and others in 2005, using gravitational microlensing.^[1] According to the best fit model, it has about 3.5 times the mass of Jupiter and a projected separation of 3.6 astronomical units from the star. This would result in an effective temperature around 50 K, similar to that of Neptune. However, an alternative model which gives a slightly lower mass of 3.3 times that of Jupiter and a projected separation of 2.1 AU is only slightly less likely. It may be the most massive planet currently known around a red dwarf star (though only lower limits are known for those planets detected by the radial velocity method).^[2]

See also

• Optical Gravitational Lensing Experiment or OGLE

References

1. Udalski, A.; et al. (2005). "A Jovian-Mass Planet in Microlensing Event OGLE-2005-BLG-071". The Astrophysical Journal 628 (2): L109–L112. arXiv:astro-ph/0505451. Bibcode:2005ApJ...628L.109U. doi:10.1086/432795.
2. Dong, Subo; et al. (2009). "OGLE-2005-BLG-071Lb, the Most Massive M Dwarf Planetary Companion?". The Astrophysical Journal 695 (2): 970–987. arXiv:0804.1354. Bibcode:2009ApJ...695..970D. doi:10.1088/0004-637X/695/2/970.

Coordinates: 17^h 50^m 09^s, −34° 40′ 23″