Found the largest planetary system
Astronomers at the Australian national University has discovered the largest known planetary systems. Therein, except for the Central star has a large planet.
This planet makes a complete revolution around the sun in nearly a million years. This gas giant is at a distance of one billion kilometers from the star, which exceeds in 140 times the distance between Pluto and the Sun. Reported by the BBC.
Thus far, there are only a few of these planetary systems.
The exoplanet, which received the designation 2MASS J2126-8140 has a lot of 12-15 Jupiter. It was discovered in the programme of observations of young stars and brown dwarfs in the immediate galactic environment of the Sun. Astronomers came to realize that they see not two independent object at the same distance from the Sun is about 100 light years away, a planetary system.
“We were very surprised by the discovery of an object with such a relatively small mass so far from the Central star. Unlike Solar, this system could not occur from a huge gas-dust clouds,” says Dr. Simon Murphy from the Australian national University.
The diameter of this planetary system is almost three times the size of previously identified counterparts.
“We assume they created 10-45 million years ago, streams of gas, moving in one direction, says Dr. Murphy. – They were to occur in the almost complete absence of gravitational perturbations from other stars. Between them the relationship is so weak that any neighboring star completely would distort their mutual orbit”.
For eight years, astronomers believed that the object 2MASS J2126-8140 is a brown dwarf, that is “nedrow”, or a planet that revolves around some star.
However, new data allowed to identify not only the orbit of the planet around distant from her stars, but to clarify the mass of this celestial body.