 | This article needs to be updated. (August 2014) |
This is a list of exoplanets detected by gravitational microlensing. The phenomenon results in the background star's light being warped around a foreground object, causing a distorted image. If the foreground object is a star with an orbiting planet, we would observe an abnormally bright image. By comparing the luminosity and light distortion of the background star to theoretical models, we can estimate the planet's mass and the distance from its star.
The least massive planet detected by microlensing is KMT-2020-BLG-0414Lb, which has a mass about 1.9 times the mass of earth, or OGLE-2013-BLG-0341LBb, which has a mass about 2 times the mass of earth.[1][2] The widest separation between a planet and a star is OGLE-2008-BLG-092Lb, which is ~18 AU; the shortest separation is MOA-2015-BLG-337Lb, which is 0.24 AU. There are 7 known multi-planetary systems detected by microlensing, all of which have two planets.[3]
- ^ Zhang, Keming; Zang, Weicheng; El-Badry, Kareem; Lu, Jessica R.; et al. (September 2024). "An Earth-Mass Planet and a Brown Dwarf in Orbit Around a White Dwarf". Accepted for publication. arXiv:2409.02157.
- ^ Cite error: The named reference
Gould_2014was invoked but never defined (see the help page). - ^ "Planetary Systems Composite Data". NASA Exoplanet Archive. Retrieved 19 February 2023.