Korea Microlensing Telescope Network    

Discovery of a new Earth-mass planet

2017-04-28 / AM 10:04:42

A new planet with the mass of Earth has been discovered from combining the observation data by our ground-based KMTNet and NASA’s Spitzer space telescope.

The new planet, called OGLE-2016-BLG-1195Lb, has 1.43 times the Earth-mass and orbits around its host star at 1.16 AU, the nearly same distance from our Earth to the Sun. The planet is likely far too cold to be habitable for life, because the host star turned out to be an ultracool dwarf with only 7.8 percent of the Solar mass. The new planet is nearly 13,000 light-years away from us and lies in the Galactic disk.

Research article : Shvartzvald et al. ApJL, 840, L3, Press release : NASA/JPL Link
Artist’s concept to show the new planet OGLE-2016-BLG-1195Lb orbiting around a red ultracool dwarf
(Credits: NASA/JPL-Caltech)

Schematic diagram to show joint observations of a microlensing event using the ground-based KMTNet and Spitzer space telescope