Choose the design that fits your site. This decreased the velocity by 279 m/s and lowered perihelion from 0.99 AU to 0.95 AU. the orbit of Mars. Updates? low-gravity impact, a signal continued after the "landing" system to estimate the gravity field of the asteroid. "The shape of 433 Eros from the NEAR-Shoemaker Laser Rangefinder". Tutum kontrolü 0.1 dereceye kadardı, görüş hattı işaret kararlılığı bir saniyede 50 mikroradyan içindeydi ve işlem sonrası tutum bilgisi 50 mikroradyan içindir. a signal from its new home. [2], At 7 p.m. EST on February 28, 2001 the last data signals were received from NEAR Shoemaker before it was shut down. Görev, asteroide yaklaşmayı başardı ve birkaç kez yörüngeye oturdu, sonunda 12 Şubat 2001'de asteroide dokunarak sona erdi. The root cause of this incident has not been determined, but software and operational errors contributed to the severity of the anomaly.[5]. 3 Ocak 1999'da NEAR'ın yörünge hızını Eros'unkiyle eşleştirmek için bir itici yanmasını içeren bir randevu manevrası yapıldı. Find out more, This article is about the robotic space probe named NEAR Shoemaker. It then NEAR-Shoemaker was the first spacecraft to orbit and (though this was not originally planned) 28 Şubat 2001, saat 19: 00'da, kapatılmadan önce NEAR Shoemaker'dan son veri sinyalleri alındı. To the surprise of the controllers, the spacecraft was undamaged and operational after the landing at an estimated speed of 1.5 to 1.8 meters per second (thus becoming the first spacecraft to soft-land on an asteroid). Spacecraft guidance was achieved through the use of a sensor suite of five digital solar attitude detectors, an inertial measurement unit, (IMU) and a star tracker camera pointed opposite the instrument pointing direction. The Near mission was roughly five years from launch (February 17, 1996) until the end of the extended mission on the surface of Eros (February 28, 2001). Eros, yaklaşık 13 × 13 × 33 km boyutunda S-tipi bir asteroittir ve Dünya'ya yakın ikinci en büyük asteroittir. Uzay aracının iticileri , anormallik sırasında binlerce kez ateş açtı ve programın itici marjını sıfıra indiren 29 kg itici gaz harcadı. NSSDCA Asteroid Home Page John M. Logsdon is Professor Emeritus of Political Science and International Affairs at George Washington University’s Elliott School of International Affairs. Eros uyduları için aramalar 28 Ocak ve 4 ve 9 Şubat tarihlerinde gerçekleşti; hiçbiri bulunamadı. NEAR-Shoemaker did not prove or disprove this link to the satisfaction of scientists. Built and operated by the Applied Physics Laboratory at Johns Hopkins University, But with all of its objectives fulfilled, it was decided to try to Our editors will review what you’ve submitted and determine whether to revise the article. The NEAR mission was the first launch of NASA's Discovery Program, a series of small-scale spacecraft designed to proceed from development to flight in under three years for a cost of less than $150 million. NSSDCA Planetary Home Page, A graph of the measurements of the gamma-ray spectrometer, Detailed NEAR Spacecraft and Mission Information. (charge-coupled device) array to determine the size, shape, and spin characteristics A graph of the measurements of the gamma-ray spectrometer Searches for satellites of Eros took place on January 28, and 4 and 9 February, none were found. The mission succeeded in closing in with the asteroid and orbited it several times, finally terminating by touching down on the asteroid on 12 February 2001. asteroid 433 Eros. Eco, Cookies help us deliver our services. This anomaly almost resulted in the loss of the spacecraft due to lack of solar orientation and subsequent battery drain. Contact between the spacecraft and mission control could not be established for over 24 hours. burn and the mission had to be rescoped for a 23 December 1998 flyby of Eros Eros çevresinde yörüngesel yerleştirme , 14 Şubat 2000 tarihinde UT 15: 33'te (10:33 EST), NEAR, Eros'un yörüngesine çok yakın olan 13 aylık bir güneş merkezli yörüngeyi tamamladıktan sonra gerçekleşti. Bu bağlantı kurulduktan sonra, göktaşı malzemesi büyük, karmaşık ve gelişen ekipmanlarla incelenebilir ve sonuçlar uzaydaki cisimlere ekstrapole edilebilir. 24 Ocak 2001'den itibaren uzay aracı yüzeye bir dizi yakın geçiş (5 ila 6 km) başlattı ve 28 Ocak'ta asteroitten 2 ila 3 km uzaklaştı. Dünya'ya Yakın Asteroid buluşma - Shoemaker gezegen bilimci onuruna onun 1996 lansmanından sonra yeniden adlandırılmış (YAKIN Shoemaker), Eugene Shoemaker , bir oldu robotik uzay sondası tarafından tasarlanan Johns Hopkins Üniversitesi Uygulamalı Fizik Laboratuvarı için NASA incelemek için yakın Dünya asteroid Eros dan bir yıl boyunca yakın yörünge. On July 3, 1997 NEAR executed the first major deep space maneuver, a two-part burn of the main 450 N thruster. Trombka JI, Squyres SW, Bruckner J, Boynton WV, Reedy RC, McCoy TJ, Gorenstein P, Evans LG, Arnold JR, Starr RD, Nittler LR, Murphy ME, Mikheeva I, McNutt RL, McClanahan TP, McCartney E, Goldsten JO, Gold RE, Floyd SR, Clark PE, Burbine TH, Bhangoo JS, Bailey SH, Petaev M (2000).
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