The first observation of the earth China killer asteroids has potential threat to earth into orbit-rewrite攻略�

The first observation of the earth: Chinese killer asteroids has potential threat will orbit toward Earth Asteroid asteroid 2009ES 2009ES on 8 September, Xinhua news agency, Nanjing (reporter Cai Yugao, Jiang Fang) the evening of 7, with Asia’s largest "earth sentry" said the 1.2 meter telescope of Purple Mountain Observatory near earth objects, researchers at the Chinese Academy of Sciences in Xuyi Observatory for the first time observations of the asteroid 2009ES. The asteroid is one of the world’s most threatened near Earth Asteroids by the International Astronomical community. Recently, the 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. Located in Xuyi station of Purple Mountain Observatory 1.2 m Schmidt telescope near earth objects, occupies an important seat in the asteroid observation equipment, observation data for two consecutive years ranked top five in the world, first in asia. 7 evening, the earth sentinel once again show power. "Earth sentry" to capture the black-and-white images of star, in the eyes of ordinary people is rather boring, but observers as treasure as careful study. "Found!" Suddenly, Zhao Haibin jumped up from his seat!" 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". With the increase of observation data, observation personnel through the picture the positions of the stars to each pixel of the image position, accurate positioning to get the 2009ES. 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." Next, the researchers will further consolidate the observation data and sent to the international asteroid center. "This observation is significant." Zhao Haibin said that the increase in observation data will help to analyze the operation of the 2009ES, and then determine its.相关的主题文章: