“NEAR Shoemaker”的概念、定义、翻译、参考文献-科学参考

NEAR Shoemaker

Astronomy

A NASA space probe launched in 1996 February to the asteroid Eros. Originally known as Near-Earth Asteroid Rendezvous (NEAR), it was renamed NEAR Shoemaker after entering orbit around Eros in honour of E. Shoemaker. On the way to Eros it passed and photographed (253) Mathilde, a C-type (carbonaceous) asteroid, at a distance of under 1200 km in 1997 June, and underwent an Earth gravity-assist in 1998 January. The spacecraft flew past Eros at a distance of 3827 km in 1998 December. After making one orbit of the Sun, the spacecraft re-encountered Eros and went into orbit around it in 2000 February, photographing its surface in detail and studying it with an X-ray/gamma-ray spectrometer, a near-infrared imaging spectrograph, a laser rangefinder, and a magnetometer. The mission ended when NEAR Shoemaker made a low-speed descent to the surface in 2001 February, continuing to transmit data for over two weeks. It was the first of NASA’s Discovery class of low-cost missions.
http://near.jhuapl.edu/ Official mission website.

Space Exploration

A spacecraft launched on 17 February 1996 that carried out fly-bys of asteroids 253 Mathilde on 17 June 1997 and asteroid 433 Eros on 23 December 1998. It returned to orbit Eros on 14 February 2000. With an original orbit of 320×366 km above Eros, the orbit was lowered during the summer of 2000, to a near circular orbit of 35 km where the spacecraft spent several weeks. NEAR Shoemaker was the first spacecraft to soft land on an asteroid. The mission's science objectives were to map Eros's surface, and determine its size, shape, rotation rate, mass, density, and composition. Its instruments included an imager, infrared spectrometer, X-ray/gamma-ray spectrometer, magnetometer, and a lidar.
NEAR Shoemaker was built by the Johns Hopkins University Applied Physics Laboratory, Maryland, who also managed the project.
http://near.jhuapl.edu/ Images and scientific results from the NEAR Shoemaker mission to 433 Eros. Articles provide background on mission design and operations. The site has a good selection of asteroid and spacecraft animations and a comprehensive Frequently Asked Questions list.

单词	NEAR Shoemaker
释义	NEAR Shoemaker Astronomy A NASA space probe launched in 1996 February to the asteroid Eros. Originally known as Near-Earth Asteroid Rendezvous (NEAR), it was renamed NEAR Shoemaker after entering orbit around Eros in honour of E. Shoemaker. On the way to Eros it passed and photographed (253) Mathilde, a C-type (carbonaceous) asteroid, at a distance of under 1200 km in 1997 June, and underwent an Earth gravity-assist in 1998 January. The spacecraft flew past Eros at a distance of 3827 km in 1998 December. After making one orbit of the Sun, the spacecraft re-encountered Eros and went into orbit around it in 2000 February, photographing its surface in detail and studying it with an X-ray/gamma-ray spectrometer, a near-infrared imaging spectrograph, a laser rangefinder, and a magnetometer. The mission ended when NEAR Shoemaker made a low-speed descent to the surface in 2001 February, continuing to transmit data for over two weeks. It was the first of NASA’s Discovery class of low-cost missions. http://near.jhuapl.edu/ Official mission website. Space Exploration A spacecraft launched on 17 February 1996 that carried out fly-bys of asteroids 253 Mathilde on 17 June 1997 and asteroid 433 Eros on 23 December 1998. It returned to orbit Eros on 14 February 2000. With an original orbit of 320×366 km above Eros, the orbit was lowered during the summer of 2000, to a near circular orbit of 35 km where the spacecraft spent several weeks. NEAR Shoemaker was the first spacecraft to soft land on an asteroid. The mission's science objectives were to map Eros's surface, and determine its size, shape, rotation rate, mass, density, and composition. Its instruments included an imager, infrared spectrometer, X-ray/gamma-ray spectrometer, magnetometer, and a lidar. NEAR Shoemaker was built by the Johns Hopkins University Applied Physics Laboratory, Maryland, who also managed the project. http://near.jhuapl.edu/ Images and scientific results from the NEAR Shoemaker mission to 433 Eros. Articles provide background on mission design and operations. The site has a good selection of asteroid and spacecraft animations and a comprehensive Frequently Asked Questions list.
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