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A list of known near-Earth asteroid close approaches less than 1 lunar distance (384,400 km or 0.00257 AU) from Earth in 2012. [note 1] Rows highlighted red indicate objects which were not discovered until after closest approach
Asteroid designation Date of impact Location of impact Method of detection Estimated size Reference 2008 TC 3: October 7, 2008: Nubian Desert in Sudan: visual, weather satellite, meteorite recovery: 4 m (13 ft) [1] 2014 AA: January 2, 2014: Central Atlantic Ocean: infrasound: 2–4 m (6.6–13.1 ft) [2] 2018 LA: June 2, 2018: Botswana/South ...
2012 EG5 is an Apollo near-Earth asteroid with an estimated diameter of 47 meters (154 ft). [3] The asteroid was discovered on March 13, 2012. The asteroid came within 0.001539 AU (230,200 km; 143,100 mi) of Earth during its closest approach on April 1, 2012, [2] just over half the distance between Earth and the Moon's orbit.
The asteroid, described as "very small" by NASA, impacted Earth's atmosphere around 11:14 a.m. ET and created a fireball over eastern Russia, the space agency said in a post on X.
The asteroid, measuring just about 70cm in diameter, was spotted “on a collision course” with the Earth just 12 hours before its appearance in the sky, the European Space Agency said.
In August 2014, scientists from the University of Tennessee determined that 1950 DA is a rubble pile rotating faster than the breakup limit for its density, implying the asteroid is held together by van der Waals forces rather than gravity. [19] [20] 1950 DA made distant approaches to Earth on 20 May 2012, 5 February 2021 and 5 February 2023. [17]
Observations made by two telescopes of the Beta Pictoris system, located 63 light-years from Earth, suggest a collision occurred between asteroids about 20 years ago.
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).