By Will Dunham
WASHINGTON (Reuters) -The mushroom specialized an object, about 435 miles (700 km), inhabited by the cold external tributaries of our solar system, which may be qualified as a dwarf planet, where he discovers it while traveling on a very elongated orbital path around the sun.
The researchers called it one of the most distant visual things in our solar system, and they said that its presence indicates that a large area of space outside the outer planet Neptune may not be paved, a region called a Keper belt, with a long thought. The Kuper belt is filled with many ice agencies.
Looking at the name of 2017 for the year 201, the object falls into a category called the organisms through the Neptune that revolves around the sun at a distance that exceeds those represented in Neptune. The object takes about 25,000 years to complete one orbit of the sun, compared to 365 days until the Earth does so.
The researchers said that the year 2017 in 201 was determined in the seven -year -old telescopes in Chile and Hawaii.
“The study with the collaborators,” Astronomical Physics, Siau Cheng, from the Institute of Advanced Study in Princeton, New Jersey, who led the study with collaborators, “
Its size is slightly smaller than Cres, the smallest dwarf planet recognized in the solar system and has a diameter of about 590 miles (950 km). Pluto, the largest of these dwarf planets, has a diameter of about 1477 miles (2,377 km).
The 2017 block 2017 is about 20,000 times smaller than the ground and 50 times younger than Pluto.
“We don’t know the shape yet. Unfortunately, it is very far and difficult to solve with telescopes,” said Cheng. “Its composition is completely unknown yet, but it is likely to resemble other ice bodies.”
This discovery was announced by the Center for the Small Planet of the International Astronomical Union, and an international organization for astronomers, and was detailed in a study published on the open access research site Arxiv. The study has not yet been reviewed.
The tropical distance of the Earth from the sun is called astronomical unit. 2017 is currently 2017 at a distance of 90.5 astronomical units of the sun, which means 90.5 times as much as Earth.
But at the maximum point during its orbit, 2017 for the year 201 is more than 1,600 astronomical units of the sun, while the closest point in its orbit is about 45 astronomical units. This means that sometimes it is closer to the sun than Pluto, which ranges orbits from 30 to 49 astronomical units while traveling an oval path around the sun.
Researchers suspect that the 2017 extremist orbit of 201 may be caused by a long -time confrontation with the impact of the gravity of a giant planet.
“We still do not know much about the solar system far away because it is currently difficult to see things directly exceeding 150 astronomical units,” said Cheng. “The presence of this individual organism indicates that there can be hundreds or so from other things with orbit and the same size. It is very far so that it cannot be discovered at the present time.”
The five dwarf planets recognized by the International Astronomical Union, according to the arrangement of the distance from the sun: Ceres, which is the largest in the asteroid belt between Mars and Jupiter, then Pluto, Homa, McCimick and Eris, which exceeds all orbit outside Neptune.
The organization determines a different dwarf and planet. The planet must revolve around the host star – in our case of the sun – and it must often be round and so large that its gravitational strength cleanses any other creatures of a similar size near their orbit. The sun dwarf should turn and often be round, but it has not wiped the orbit of other things.
Cheng said that the discovery of 2017 for 2017 has effects on the hypotheses that involve the potential existence of the ninth planet in our solar system, the planet X or the ninth planet.
This is because the 2017 year 2017 does not follow the style that other well -known things appear via Nebertoni, which tends to assemble together. Some scientists assumed that such a grouping was caused by the danger of a discovery planet that had not yet been discovered.
“The presence of 2017 for the year 201 as an out of such a grouping can challenge this hypothesis,” said Cheng.
(Participated in the reports of Will Doneham; Al -Tahrir by Daniel Walis)
