PA-99-N2
PA-99-N2 is a microlensing event detected in the direction of the Andromeda Galaxy in 1999.Explanations
One possibility for the event is that a star in the disk of M31 gravitationally lensed a red giant also in the disk. The lensing star would have a mass between and with the most likely value near. In this case the lens profile makes it likely that the star has a planet.The possible exoplanet would have a mass of 6.34 Jupiter mass. If confirmed, it would be the first exoplanet found in another galaxy.
