The Most Distant Planetoid

New insight into the origin of Pluto as a planet not much to asteroids have not had time to settle, but has found many adherents. It seemed that found harmony in the arrangement of the planets, which prevents the presence of "extra" the ninth planet.

New insight into the origin of Pluto as a planet not much to asteroids have not had time to settle, but has found many adherents. It seemed that found harmony in the arrangement of the planets, which prevents the presence of “extra” the ninth planet.

However, the discovery of new planetoids continued March 15, 2004 led to yet another breach of harmony among the planets. On this day, a group of U.S. astronomers led by Michael Brown, has announced that in the observations at the high Palomar Observatory (California) in November 2003, they opened the most distant objects in the solar system. It was located 90 times farther from the Sun than the Earth, and 3 times more than the “most distant” planet Pluto.

And such a huge deletion was only the closest to the Sun, part of its orbit. The diameter of the asteroid’s smaller than Pluto – about 1500 km. He was named Sedna, named sea nymphs, the ruler of the cold and the dark depths of the northern seas in the myths of the Eskimo (Inuit). Such a character was not chosen by chance – in fact, this planetoid “dives” into the dark and cold region the solar system, away from the sun 928 times farther than Earth and 19 times – than Pluto. So far away none of the known asteroids. Sedna is at once took the place of “rogue planet” formerly owned by Pluto. Its orbit is highly elongated again violated the established notions about the solar system.

One revolution around the Sun, it makes for a terrible time – 10 500 years! This planetoid is not considered to Kuiper belt, because even with the greatest convergence of Sedna is 1.5 times farther from the Sun than the outer boundary of this zone. The asteroid was a “Pluto the XXI Century” – an object whose role is unclear.

He is always in complete darkness, and the sun from its surface looks like a small star. He reigns eternal cold. At the same planetoid was painted in a fairly intense red color and inferior to the “reds” only to Mars. It is unclear whether alone or in Sedna is so far away, there are other planetoids – after capabilities of telescopes can detect an object with a similar orbit just over 1% of the time it turns around the Sun, when he is on the closest part of its trajectory. For a period of Sedna takes about 100 years, and then it goes to a distant region of more than 10 000 years, and then the object of its value in modern telescopes to discern possible.

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