MOA-2009-BLG-387Lb

MOA-2009-BLG-387Lb
Discovery
Discovered by	Virginie Batista et al.
Discovery site	SAAO/Perth/Canopus; AO/FCO/Wise/HO/SSO/LSO/ORM
Discovery date	Published February 21, 2011
Detection method	Gravitational microlensing
Orbital characteristics
Semi-major axis	1.8 +0.9; −0.7 AU
Orbital period (sidereal)	1970 +2.2; −1.6 d; 5.4 y
Star	MOA-2009-BLG-387L
Physical characteristics
Mass	2.6 +4.1; −1.6 MJ

MOA-2009-BLG-387Lb is an exoplanet in the orbit of the red dwarf MOA-2009-BLG-387L. Its discovery was announced on February 21, 2011, making it the eleventh planet discovered using gravitational microlensing. The planet is thought to be over twice the mass of Jupiter and to have an orbit 80 percent larger than that of Earth's, lasting approximately 1,970 days. However, its exact characteristics are difficult to constrain because the characteristics of the host star are not well known.

^ ^a ^b ^c ^d Cite error: The named reference Batista2011 was invoked but never defined (see the help page).
^ ^a ^b ^c Cite error: The named reference EPE was invoked but never defined (see the help page).

[Batista2011-1] Cite error: The named reference Batista2011 was invoked but never defined (see the help page).

[EPE-2] Cite error: The named reference EPE was invoked but never defined (see the help page).

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Discovery
Discovered by	Virginie Batista et al. ^[1]
Discovery site	SAAO/Perth/Canopus AO/FCO/Wise/HO/SSO/LSO/ORM^[1]
Discovery date	Published February 21, 2011 ^[1]
Detection method	Gravitational microlensing
Orbital characteristics
Semi-major axis	1.8 ^+0.9 _−0.7^[2] AU
Orbital period (sidereal)	1970 ^+2.2 _−1.6^[2] d 5.4 ^[1] y
Star	MOA-2009-BLG-387L
Physical characteristics
Mass	2.6 ^+4.1 _−1.6^[2] `M`_J