2011年7月30日星期六

Earth asteroid companion

Have been travelling around the Earth and the Sun and the Moon for a long time, space, and does not only rock hunk.

Canada scientists is also accompanied by a companion, the Earth has found a "Trojan horse"-forward all the time about the same orbit around the Sun to travel a certain distance: asteroids share

Mars, Jupiter and Neptune, as other planets in our solar system, including similar objects have been found to travel.

"By the way, these are the sort of secondary satellite" says Martin Connors, who led Thursday's issue of nature found in Alberta and published in the scientist said.

Asteroid Moon known as t k 7 2010 as Earth gravity's control and stable orbit with the Earth at least 10,000 years. However, unlike the Trojan asteroids, the Moon Trojan satellite-Earth orbit. Seen from the Earth, the asteroid from the Sun sits 60 degrees.

"The planet's gravitational pull would necessarily think asteroids," Connors said. "But does not move closer to the Sun, so it is fast, and gravity of the Sun and then back away from the planet."

Follow the Earth's orbit, one of only two objects, such as when an asteroid is sitting at a 60 degree angle to the point that it is a Trojan planet Earth and the Sun's gravity is based off of that, it's almost Earth balance each other objects remain fixed.

Other nearby asteroid 2010 T k 7 is rather large compared to about 300 meters across the making. According to NASA, approximately 80 million kilometers from Earth now. By comparison, the Moon is average 384000 km.

Connors, Canada Research Chair at the University of Athabasca, who has been held by the space science search skies for about 15 years near the Trojan horse.

Search your area is 60 degrees because it's easier to look at the Earth, very close to the Sun or not. In other words shortly before sunrise or sunset for a short time immediately after the object is visible.

NASA's wise (wide-field infrared survey Explorer) Connors telescope data collected by the University of California at Los Angeles researchers combed through. After warming up in the Sun and Earth orbit emitting infrared radiation detected the asteroids for the scan. So why on earth does not make it through the atmosphere, that radiation is not visible.

They appeared to be a Trojan horse, after two asteroid in search of the University of Western Ontario in Paul Wiegert Connors, who like to use a computer to model an object reference, the data transfer operation. The researchers have observed that it is more of an asteroid to a Trojan horse that made it clear.

They are Christian Veillet, Director of the telescope's orbit the asteroid for six days last April that will scrutinize Canada France Hawaii Telescope in Hawaii to heed the call of Kamuela. Observations have confirmed the Trojan asteroids.

Connors said the discovery of a Trojan orbit with the Earth means that there are likely others. Visit the space probe near an asteroid much energy on such, since they would not need a similar orbit on the earth so is closed, he said. But it is not a good candidate for a visit, such as the 2010 TK7 itself, the Earth's tilted relative to the orbit.

Trojan asteroids of the solar system as they are of interest to scientists, the remaining material can be held in the formation, Connors said. Meteorites also contain such material, they usually had a long wandering the streets, they never quite be sure and scientists come from anywhere near Earth asteroids and possibly for a long time Troy. remains and is likely to occur near the district containing the material.

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