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Tuesday, December 6, 2016

On the outskirts of the Solar system was found the most distant planet


An international team of astronomers announced that, using the CFHT telescope in Hawaii, they have found beyond the orbit of Neptune previously unknown dwarf planet. Open the heavenly body was named 2015 RR245, and it is, according to experts, is furthest from the sun planet in the Solar system.

2015 RR245 located approximately 120 times farther from the Sun than Earth and twice on Neptune. A complete revolution around the Sun heavenly body, by calculations of experts, makes about 700 “terrestrial” years. The diameter of the dwarf planet is about 700 kilometers, although for a more accurate assessment would require additional measurements, experts say. According to one of the authors of the opening, Michelle Bannister from the University of Victoria in Vancouver, open a celestial body is a small, but bright or big, but dim. Objects, like dwarf planet discovered, often have neither sufficient size nor sufficient brightness, so finding them is very difficult, despite the fact that every such discovery for science is very valuable specialists.

According to experts, the study RR245 2015 will significantly better understand the history of the Solar system since its inception. It is known that most of the objects are sized dwarf planet that formed in the early stages of development were destroyed or thrown out when the gas giants began to move to their current positions. However, some relatively large celestial bodies, including Pluto, Eris and 2015 RR245, lucky to be in the Solar system. In addition, these space objects, as a rule, have a very unusual “landscape” is also very interesting to explore.

In 2096 2015 RR245, the orbit of which is very extended, will fit fairly close to the Sun, being only 29 times further away than the Earth — about the same distance from the sun is Pluto.

The main difference between planets and dwarf planets “normal” is that they are unable to clear the area of its orbit from other objects. In the rest of the “requirements” they have to meet the same: they must turn in its orbit around the Sun, to maintain hydrostatic equilibrium and to have a close to spherical shape, and also not be a satellite of any other planet.

Yesterday astrophysicists was discovered brown dwarf, rotating around its axis with record speed.

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