2007 TU24
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Template:Mp is an Apollo near-Earth asteroid that was discovered by the Catalina Sky Survey in Arizona on 11 October 2007. Imaging radar has estimated that it is Script error: No such module "convert". in diameter.[1] The asteroid passed 554,209 kilometer (344,370 mile or 1.4-lunar distance)[2] from Earth on 29 January 2008 at 08:33 UTC. (At the time of the passage it was believed the closest for any known potentially hazardous asteroid (PHA) of this size before 2027,[3] but in 2010 Template:Mpl was measured to be 400 meters in diameter.) At closest approach 2007 TU24 had an apparent magnitude of 10.3 and was about 50 times fainter than the naked eye can see. It required about a Script error: No such module "convert". telescope to be seen.[1]
Impact risk assessment
From the date of discovery of asteroid Template:Mp on 11 October 2007, a total of 316 observations of it had been made by 31 January 2008, spanning 112 days.[4] Now the asteroid has an observation arc of about 3 years and the trajectory is well defined.[4] It was removed from the Sentry Risk Table on 4 December 2007 at 14:05 UTC.[5]
2008 passage
Goldstone Observatory carried out radar observations on January 23 and 24 January 2008. As of then, the orbit of the asteroid was known with such a high precision that scientists were able to calculate close approaches from the year 67 AD to 2141 AD.[6] On 29 January 2008 at 08:33 UTC, Template:Mp passed by the earth at a nominal distance of Script error: No such module "convert". with a relative speed of 9.248 km/s.[7]
Observations from Arecibo Observatory were taken on 1–4 February.[1] It is a contact binary asteroid.[8]
Other close approaches
- Asteroid Template:Mpl was the closest potentially hazardous asteroid, passing Earth by Script error: No such module "convert"., 0.00289 AU, or just 1.1 times the Moon's average distance from Earth on 3 July 2006.
- Asteroid 4179 Toutatis (4.5 km diameter) came within 1.5 million km, 0.0104 AU (within 4 lunar distances) of the Earth on 29 September 2004.
- On 7 August 2027, Template:Mpl will pass within 388,960 km (0.0026 AU) of Earth
- On 13 April 2029, Apophis will pass the earth within the orbits of the geosynchronous communication satellites.
See also
References
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- ↑ a b c Cite error: Script error: No such module "Namespace detect".Script error: No such module "Namespace detect".
- ↑ Script error: No such module "citation/CS1".
- ↑ Near-Earth Asteroid 2007 TU24 to Pass Close to Earth on Jan. 29 - Should be Observable with Modest Sized Telescopes Template:Webarchive
- ↑ a b Cite error: Script error: No such module "Namespace detect".Script error: No such module "Namespace detect".
- ↑ NEOs Removed from Impact Risks Tables
- ↑ 2007 TU24planning.html Template:Webarchive
- ↑ Script error: No such module "citation/CS1".
- ↑ Script error: No such module "citation/CS1".
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External links
- Asteroid to Make Rare Close Flyby of Earth Template:Webarchive (Catalina Sky Survey Photo)
- Huge asteroid to fly by past earth.Independent Online
- Asteroid 2007 TU24: No Danger to Earth Template:Webarchive (Phil Plait 25 January 2008)
- Template:NeoDys
- Template:ESA-SSA
- Template:PAGENAMEBASE at the JPL Small-Body DatabaseTemplate:EditAtWikidata
Template:Planetary defense Script error: No such module "Navbox". Template:Authority control
- Pages with ignored display titles
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- Apollo asteroids
- Minor planet object articles (unnumbered)
- Discoveries by the Catalina Sky Survey
- Contact binary (small Solar System body)
- Radar-imaged asteroids
- Near-Earth objects removed from the Sentry Risk Table
- Potentially hazardous asteroids
- Astronomical objects discovered in 2007