MOA-2011-BLG-262L

MOA-2011-BLG-262L (MOA-2011-BLG-191/OGLE-2011-BLG-0462) is a red dwarf with an orbiting exoplanet, both detected through the gravitational microlensing event MOA-2011-BLG-262.

[3] It was once believed to be either an exoplanet with 3.2 times the mass of Jupiter and a exomoon with 0.47 times Earth's mass or a red dwarf with a mass of 0.11 solar masses orbited by a ~17 M🜨 planet,[2][4] but the latter scenario was confirmed in 2024 based on observations of the host star by the Keck telescope, 10 years after the ending of the microlensing event.

[3] The system is located 24,400 light-years from Earth, in the constellation Sagittarius.

[1] The host star is a red dwarf, with 19% the Sun's mass and a faint apparent magnitude of 22.3 in the K-band.

It has a transverse velocity of 541.3±65.75 km/s, the highest ever found for any star with a known exoplanet.

An artist's rendition of the system as a rogue planet with a moon (left) and a star with a planet (right); since 2024, the scenario on the right has been confirmed as the actual system