 Artist's impression of OGLE-2007-BLG-349Lb(foreground) orbiting its parent stars(upper right). | |
| Discovery | |
|---|---|
| Discovered by | Hubble Space Telescope |
| Discovery date | 22 September 2016 |
| Gravitational microlensing | |
| Orbital characteristics | |
| Star | OGLE-2007-BLG-349 |
| Physical characteristics | |
| Mass | 80 (± 13)[1]M🜨 |
OGLE-2007-BLG-349Lb[note 1][2] is acircumbinaryextrasolar planet about 8,000light-years away in theconstellation ofSagittarius.[3] It is the first circumbinary exoplanet to be discovered using themicrolensing method of detecting exoplanets.[1]
OGLE-2007-BLG-349Lb is asuper-Neptune, an exoplanet that has a mass and radius larger than that ofNeptune. It has a mass of around 80M🜨.[1] This is somewhat close to the mass ofSaturn, 95M🜨, so OGLE-2007-BLG-349Lb can also be considered agas giant. It orbits at a distance of around 2.9 AU in a circumbinary orbit, meaning it orbits around two stars.
The planet orbits in a circumbinary (M-type)binary star system namedOGLE-2007-BLG-349L. They orbit around each other roughly every 9 days.[1] The stars have masses of 0.41 and 0.30M☉, respectively. The age of the system, radii and temperatures of the stars are not known. In comparison, theSun is 4.6 billion years old[4][5] and has a surface temperature of 5778 K.[6] The star'sapparent magnitude, or how bright it appears from Earth's perspective, is 14.3. Therefore, it is too dim to be seen with the naked eye.
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