Chinese observed killer asteroids orbit toward the earth or if the Sohu of science and technology g-area meru

Chinese observed "killer asteroids orbit toward the earth – or if the Sohu of science and technology 7, purple mountain observatory station observation in Xuyi researchers checked in before observation Neos telescope operating state. Near Earth Asteroid 2009ES movement — a white band along the Green Cross orbit prediction shown in operation. This version of the picture Xinhua News Agency reporter Li Xiang according to Xinhua news agency, on the evening of 7, with Asia’s largest "earth sentry" said the 1.2 m-diameter Neos telescope, Purple Mountain Observatory, Chinese Academy of Sciences in Xuyi Observatory researchers first observed asteroid 2009ES. The asteroid is one of the world’s most threatened near Earth Asteroids by the International Astronomical community. The asteroid two indicators are dangerous in scope recently, Chinese Academy of Sciences, chief researcher at the Purple Mountain Observatory near the astronomical telescope missions to an asteroid Zhao Haibin received international joint observation organization "task", with the potential risk of the earth’s near Earth Asteroid 2009ES in September 5th in place, want to choose the following observation. The asteroid survey network information display, 2009ES 150 meters in diameter between -470 meters, away from the nearest to the earth is about 18.8 times the distance of the moon (lunar distance of 380 thousand km), these two indicators are belong to the "dangerous" range. More special is that the orbit of Mars orbit and the distance of 2009ES recently when only 0.0012 astronomical units (180 thousand km), susceptible to gravitational perturbation and Mars orbit may be farther away from the earth and may also directly into the earth." Zhao Haibin said that some of the planets are no signs of an asteroid incident, often because of the gravity of Mars or Jupiter perturbation. The world has 8 stations have observed the earth "killer" in Xuyi station of Purple Mountain Observatory 1.2 m Schmidt telescope near earth objects, on the evening of 7 captured a black-and-white photos of the stars. "That’s it!" Pointing to the picture on the track, the central computer across the small bar Zhao Haibin said: "this guy ran very fast." It is understood that the 2009ES is in the state of Arizona Levin Mengshan survey project found in 2009. Previously, the world has 8 stations have observed it, and the evening of 7 is the first time the Chinese astronomers to trace this dangerous". Due to the distance from the earth, it is very fast movement, running 27 seconds per second. Zhao Haibin said: according to our calculations, and the position of the previous prediction is very good, this table tomorrow’s literary circles on the asteroid orbit accuracy has been mastered high." The diameter of 10 kilometers ultra can destroy the Earth Asteroid comet collision with Jupiter in 1994 after the incident, the international astronomical community will gradually pay attention to risk of hitting the earth near earth objects. At present, researchers have found 1640 potential threat to near earth asteroids". The international astronomical community in the United States National Aeronautics and Space Administration, the nearest to the asteroid observation system for the target two times, the first time was in 1998 during the -2008 years, the news agency相关的主题文章: