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OGLE-2005-BLG-390

The red dwarf, which wouldn't be detectable with normal instruments, showed as a microlense (similar to MACHO-98-BLG-35). Thereby around it has a planet been discovered with only 5.5 times the mass of Earth. This orbits its star every 10 years in 2.6 AU distance. Its surface temperature is estimated to be only 53 kelvin.

Constellation: Sagittarius
Distance: 25 000 light-years
Luminosity: 0.001 * Sun
Mass: 0.2 * Sun

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    OGLE-2005-BLG-390
Artist impression of the planet and its star.
Graphic: ESO

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