OGLE-2006-BLG-109L
OGLE-2006-BLG109L is one of the earth 5000 light years distant planetary system , which among astronomers for its similarity to the solar system causes a stir. The system was discovered by utilizing the so-called microlens or general gravitational lens effect .
The star
The star is about half the size of our sun and significantly cooler and darker.
The planets
Two exoplanets have been discovered in the system so far. The larger of the two, called OGLE-2006-BLG-109L b , has about 70 percent of Jupiter's mass and orbits its star at a distance of 2.3 AU , i.e. 2.3 times the distance between the earth and the sun. The smaller of the two planets is called OGLE-2006-BLG-109L c , has approx. 27% of Jupiter's mass and orbits its sun at a distance of 4.5 AU.
Specialty
The peculiarity of the system is that the conditions within the system are largely similar to those of the earth and thus share significantly more properties with our solar system than all other extrasolar solar systems discovered so far. The distance between the inner of the two planets and the sun is roughly half the distance between the outer planet and its star. This is the same with Jupiter and Saturn in our solar system . The larger of the two planets also has three times as much mass as the smaller one - another parallel to the two solar gas planets .
swell
- ↑ Similar planets: Astronomers discover smaller versions of the solar system. In: Spiegel Online . February 15, 2008, accessed January 22, 2017 .
- ↑ BS Gaudi, DP Bennett a. a .: Discovery of a Jupiter / Saturn analog with gravitational microlensing. In: Science. Volume 319, number 5865, February 2008, pp. 927-930, doi : 10.1126 / science.1151947 , PMID 18276883 .