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2011 MD is a bright micro-asteroid, classified as near-Earth object of the Apollo and Amor group, respectively. [1] [3] On 27 June 2011, at around 17:00 UTC (13:00 EDT), the object passed exceptionally close to Earth's surface at a distance of approximately 12,000 kilometers (7,500 mi), roughly the diameter of the Earth.
A list of known near-Earth asteroid close approaches less than 1 lunar distance (384,400 km or 0.00257 AU) from Earth in 2011. [note 1] Rows highlighted red indicate objects which were not discovered until after closest approach
(436724) 2011 UW 158, provisionally known as 2011 UW 158, is a stony, walnut-shaped asteroid and fast rotator, classified as near-Earth object and potentially hazardous asteroid of the Apollo group, approximately 300 meters in diameter.
June 27, 1857: First asteroid named after living person: 87 Sylvia: 261: May 16, 1866: First asteroid known to have more than one moon (determined in 2005) 90 Antiope: 80×80: October 1, 1866: Double asteroid with two nearly equal components; its double nature was discovered using adaptive optics in 2000 92 Undina: 126: 1867 July 7
Images taken by satellite show plumes from the asteroid impact, but it could take weeks to monitor for changes in the asteroid’s trajectory. NASA's DART mission was a success. Images taken by ...
Business and economy Greek economic crisis: The Parliament of Greece begins debate on unpopular austerity measures designed to avert the threat of bankruptcy through a 78-billion- euro rescue package. (Reuters via Yahoo News) (Bloomberg) The governor of the central bank of Greece, George Provopoulos, criticizes the government's latest austerity measures, saying it does not emphasize cutting ...
NASA's DART mission was a success. Images taken by satellite show plumes from the asteroid impact, but it could take weeks to monitor for changes in the asteroid’s trajectory.
More than one asteroid per year may be listed if its geocentric distance [note 1] is within a tenth of the lunar distance, or 0.10 LD. For comparison, since a satellite in a geostationary orbit has an altitude of about 36,000 km (22,000 mi), then its geocentric distance is 0.11 LD (approximately three times the width of the Earth).