List of extrasolar planets detected by microlensing
Encyclopedia
This is the list of 12 extrasolar planets detected by microlensing
, sorted by projected separations. To find planets using that method, the background star is temporarily magnified by a foreground star because of the gravity that bends light. If the foreground star has a planet, the light from background star would be slightly brighter than the star with no planet. Studying the brightness difference of background star between the foreground star with planets and foreground star with no planets, then mass can be estimated. The projected separation can be determined from how much the light bended.
The most massive planet detected by microlensing is OGLE-2005-BLG-071Lb
, which masses 3.5 MJ; the least massive is MOA-2007-BLG-192Lb
, which masses 0.010 MJ or 3.3 M⊕. The widest separation between a planet and a star is OGLE-2006-BLG-109Lc, which is 4.5 AU; the shortest separation is MOA-2007-BLG-192Lb, which is 0.62 AU.
There are 2 members of the multi-planet systems.
Yellow rows donate the members of the multi-planet system
Gravitational microlensing
Gravitational microlensing is an astronomical phenomenon due to the gravitational lens effect. It can be used to detect objects ranging from the mass of a planet to the mass of a star, regardless of the light they emit. Typically, astronomers can only detect bright objects that emit lots of light ...
, sorted by projected separations. To find planets using that method, the background star is temporarily magnified by a foreground star because of the gravity that bends light. If the foreground star has a planet, the light from background star would be slightly brighter than the star with no planet. Studying the brightness difference of background star between the foreground star with planets and foreground star with no planets, then mass can be estimated. The projected separation can be determined from how much the light bended.
The most massive planet detected by microlensing is OGLE-2005-BLG-071Lb
OGLE-2005-BLG-071Lb
OGLE-2005-BLG-071Lb is an planet discovered by the Optical Gravitational Lensing Experiment and others in 2005, using gravitational microlensing. According to the best fit model, it has about 3.5 times the mass of Jupiter and a projected separation of 3.6 astronomical units from the star...
, which masses 3.5 MJ; the least massive is MOA-2007-BLG-192Lb
MOA-2007-BLG-192Lb
MOA-2007-BLG-192Lb, occasionally shortened to MOA-192 b, is an extrasolar planet approximately 3,000 light-years away in the constellation of Sagittarius. The planet was discovered orbiting the brown dwarf or low-mass star MOA-2007-BLG-192L. At a mass of approximately 3.3 times Earth, it is one of...
, which masses 0.010 MJ or 3.3 M⊕. The widest separation between a planet and a star is OGLE-2006-BLG-109Lc, which is 4.5 AU; the shortest separation is MOA-2007-BLG-192Lb, which is 0.62 AU.
There are 2 members of the multi-planet systems.
Yellow rows donate the members of the multi-planet system
| Planet Extrasolar planet An extrasolar planet, or exoplanet, is a planet outside the Solar System. A total of such planets have been identified as of . It is now known that a substantial fraction of stars have planets, including perhaps half of all Sun-like stars... |
Mass Planetary mass Planetary mass is a measure of the mass of a planet. Within the Solar System, planets are usually measured in the astronomical system of units, where the unit of mass is the solar mass, the mass of the Sun... (MJ Jupiter mass Jupiter mass , is the unit of mass equal to the total mass of the planet Jupiter . Jupiter mass is used to describe masses of the gas giants, such as the outer planets and extrasolar planets. It is also used in describing brown dwarfs.... ) |
Projected separation (AU Astronomical unit An astronomical unit is a unit of length equal to about or approximately the mean Earth–Sun distance.... ) |
Year of discovery |
|---|---|---|---|
| MOA-2007-BLG-192Lb MOA-2007-BLG-192Lb MOA-2007-BLG-192Lb, occasionally shortened to MOA-192 b, is an extrasolar planet approximately 3,000 light-years away in the constellation of Sagittarius. The planet was discovered orbiting the brown dwarf or low-mass star MOA-2007-BLG-192L. At a mass of approximately 3.3 times Earth, it is one of... |
0.01 | 0.62 | 2008 |
| MOA-2007-BLG-400Lb MOA-2007-BLG-400Lb MOA-2007-BLG-400Lb is an extrasolar planet located approximately 20000 light-years away in the constellation of Sagittarius, orbiting the star MOA-2007-BLG-400L. This planet was detected on September 18, 2008 by the gravitational microlensing by Dong. It has mass between 50% to 130% of Jupiter and... |
0.88 | 0.83 | 2008 |
| MOA-2008-BLG-310Lb MOA-2008-BLG-310Lb MOA-2008-BLG-310Lb is an extrasolar planet which orbits probably the late K-type star MOA-2008-BLG-310L, located at least 20000 light years away in the constellation Scorpius. This planet has mass 23% of Jupiter or 77% of Saturn and orbits at 1.25 AU from the star. This planet was discovered by... |
0.23 | 1.24 | 2009 |
| MOA-2009-BLG-387Lb MOA-2009-BLG-387Lb MOA-2009-BLG-387Lb is a planet in the orbit of the red dwarf MOA-2009-BLG-387L. Its discovery was announced on February 21, 2011, making it the eleventh planet discovered using gravitational microlensing. The planet is thought to be over twice the mass of Jupiter and to have an orbit 80 percent... |
2.58 | 1.79 | 2011 |
| MOA-2009-BLG-319Lb | 0.16 | 1.87 | 2010 |
| OGLE-2006-BLG-109Lb | 0.73 | 2.31 | 2008 |
| OGLE-2005-BLG-169Lb OGLE-2005-BLG-169Lb OGLE-2005-BLG-169Lb is an extrasolar planet located approximately 2700 parsecs away in the constellation of Sagittarius, orbiting the star OGLE-2005-BLG-169L. This planet was discovered by the OGLE project using the gravitational microlensing method. Based on a most likely mass for the host star of... |
0.04 | 2.76 | 2006 |
| OGLE-2005-BLG-390Lb OGLE-2005-BLG-390Lb OGLE-2005-BLG-390Lb is a 'super-Earth' extrasolar planet orbiting the star OGLE-2005-BLG-390L, which is situated 21,500 ± 3,300 light years away from Earth, near the center of the Milky Way galaxy... |
0.02 | 2.76 | 2006 |
| OGLE-2007-BLG-368Lb OGLE-2007-BLG-368Lb OGLE-2007-BLG-368Lb is an extrasolar planet located approximately 19,230 light-years away in the constellation of Scorpius, orbiting the star OGLE-2007-BLG-368L. This planet was detected on December 8, 2009 by the gravitational microlensing by Sumi. It has mass 6.94% of Jupiter and is located 3.3... |
0.07 | 3.14 | 2009 |
| OGLE-2005-BLG-071Lb OGLE-2005-BLG-071Lb OGLE-2005-BLG-071Lb is an planet discovered by the Optical Gravitational Lensing Experiment and others in 2005, using gravitational microlensing. According to the best fit model, it has about 3.5 times the mass of Jupiter and a projected separation of 3.6 astronomical units from the star... |
3.46 | 3.53 | 2005 |
| OGLE-2003-BLG-235Lb OGLE-2003-BLG-235Lb OGLE-2003-BLG-235Lb/MOA-2003-BLG-53Lb is an extrasolar planet discovered in April 2004 by the OGLE and MOA collaborations. Its high mass indicates that it is most probably a gas giant planet similar to Jupiter. It is located around 4.3 AU away from its parent star.- External links :***SPACE.com: ... |
2.64 | 4.31 | 2004 |
| OGLE-2006-BLG-109Lc | 0.27 | 4.54 | 2008 |