|Extrasolar planet||List of extrasolar planets|
|Right ascension||(α)||17h 50m 09s|
|Declination||(δ)||–34° 40′ 23″|
|Distance||approx. 11000 ly
(approx. 3300 pc)
|Projected separation||(d)||3.6 ± 0.2
or 2.1 ± 0.1 AU
or 3.4 ± 0.3 MJ
|Discovery date||27 May 2005|
|Discoverer(s)||Udalski et al.|
|Discovery method||Gravitational microlensing|
EWS 2005-BUL-071Lb, EWS 2005-BLG-071Lb
OGLE-2005-BLG-071Lb is an planet discovered by the Optical Gravitational Lensing Experiment (OGLE) and others in 2005, using gravitational microlensing. 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).
- 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.
- 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.
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