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Exoplanet

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OGLE-2019-BLG-0960Lb
Discovery
Discovered by	Jennifer C. Yee, et al.
Discovery site	OGLE
Discovery date	January 2021
Detection method	Microlensing
Orbital characteristics
Semi-major axis	1.45±0.28—1.90±0.43 AU
Star	OGLE-2019-BLG-0960L
Physical characteristics
Mass	1.8±0.4—2.5±0.6 M_🜨
^ Multiple models in Table 4; low and high values quoted here.

OGLE-2019-BLG-0960Lb is an exoplanet that was discovered in January 2021 by gravitational microlensing. It is approximately twice the mass of Earth, making it a super-Earth. At the time of discovery, it was the lowest mass-ratio planet to be detected via microlensing; that is, the least massive planet relative to the mass of its host star. Its host star, OGLE-2019-BLG-0960L, has an mass between 0.3 and 0.6 M_☉.

References

^ Yee, Jennifer C.; Zang, Weicheng; Udalski, Andrzej; Ryu, Yoon-Hyun; Green, Jonathan; Hennerley, Steve; Marmont, Andrew; Sumi, Takahiro; Mao, Shude; Gromadzki, Mariusz; Mróz, Przemek (2021-01-12). "OGLE-2019-BLG-0960 Lb: The Smallest Microlensing Planet". The Astronomical Journal. 162 (5): 180. arXiv:2101.04696. Bibcode:2021AJ....162..180Y. doi:10.3847/1538-3881/ac1582. S2CID 231592669.

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