2007 TU24

Near-Earth asteroid February 2018 yes #FFC2E0 2007 TU 24 Catalina Sky Survey 11 October 2007 Apollo NEO PHA 21 November 2025 (JD 2461000.5) 2.0436 AU Gm on 0.95375 AU Gm on 3.1334 AU Gm on on 0.53330 2.92 yr (1067.1 d) 5.6256° 126.970° 334.325° 42.684° ~250 metersNASA Scientists Get First Images of Earth Flyby Asteroid NASA/JPL 2008-01-25 http://www.jpl.nasa.gov/news/news.cfm?release=2008-014 2008-01-26 https://web.archive.org/web/20080129062350/http://www.jpl.nasa.gov/news/news.cfm?release=2008-014 29 January 2008 live < 2.4e10 kg unknown unknown < 0.58 km/hradius of 0.125 km; volume of a sphere * maximum likely density of 3 g/cm3 (though it could be a loose rubble pile) yields an improbable mass of 2.45e10 kg and an improbable escape velocity of 0.58 km/h. 26 h d on on 20.2JPL Small-Body Database Browser: 2007TU24 20.32 0.24 Kelvin unknown 2007 TU24 radar image 20080128.jpg Radar image of 2007 TU 24 0.33754 ms / day 3,492 days (9.56 yr) 0 0.00133656 AU km on 2.0715 AU Gm on 2007 TU 24 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 250 m ft 0 us in diameter. The asteroid passed 554,209 kilometer (344,370 mile or 1.4-lunar distance)Asteroid Zooms by Earth NASA/JPL 2008-01-29 http://www.jpl.nasa.gov/news/news.cfm?release=2008-014a 2008-01-30 2 February 2008 https://web.archive.org/web/20080202033417/http://www.jpl.nasa.gov/news/news.cfm?release=2008-014a dead 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,Near-Earth Asteroid 2007 TU24 to Pass Close to Earth on Jan. 29 - Should be Observable with Modest Sized Telescopes https://web.archive.org/web/20080124150947/http://neo.jpl.nasa.gov/news/news157.html 2008-01-24 but in 2010 2005 YU 55 was measured to be 400 meters in diameter.) At closest approach 2007 TU 24 had an apparent magnitude of 10.3 and was about 50 times fainter than the naked eye can see. It required about a 3 in mm on telescope to be seen. Impact risk assessment From the date of discovery of asteroid 2007 TU 24 on 11 October 2007, a total of 316 observations of it had been made by 31 January 2008, spanning 112 days. Now the asteroid has an observation arc of about 9.6 years and the trajectory is well defined. It was removed from the Sentry Risk Table on 4 December 2007 at 14:05 UTC.NEOs Removed from Impact Risks Tables 2008 passage thumb|left|A series of low-resolution radar images of asteroid 2007 TU24 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.2007 TU24planning.html https://web.archive.org/web/20080120161427/http://echo.jpl.nasa.gov/asteroids/2007TU24/2007TU24planning.html 2008-01-20 On 29 January 2008 at 08:33 UTC, 2007 TU 24 passed by the earth at a nominal distance of 0.0037043 AU km mi on on with a relative speed of 9.248 km/s.2017-05-03 last obs (arc=9.56 years) JPL Close-Approach Data: (2007 TU24) http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2007TU24 30 March 2016 Observations from Arecibo Observatory were taken on 1–4 February. It is a contact binary asteroid.2013-11-18 Binary and Ternary near-Earth Asteroids detected by radar NASA/JPL Asteroid Radar Research Lance A. M. Benner http://echo.jpl.nasa.gov/~lance/binary.neas.html https://web.archive.org/web/20040608071121/http://echo.jpl.nasa.gov/~lance/binary.neas.html 2004-06-08 2014-03-01 thumb|none|Animation of two photos taken from Slooh Teide observatory on 31 January 2008 Other close approaches Asteroid 2004 XP 14 was the closest potentially hazardous asteroid, passing Earth by 432,308 km mi on, 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, (137108) 1999 AN 10 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 List of exceptional asteroids Asteroid impact avoidance Asteroid naming conventions Radar astronomy References External links Asteroid to Make Rare Close Flyby of Earth https://web.archive.org/web/20120316084222/http://www.jpl.nasa.gov/news/news.cfm?release=2008-012 16 March 2012 (Catalina Sky Survey Photo) Huge asteroid to fly by past earth.Independent Online Asteroid 2007 TU24: No Danger to Earth https://web.archive.org/web/20111031131907/http://blogs.discovermagazine.com/badastronomy/2008/01/25/asteroid-2007-tu24-no-danger-to-earth/ 31 October 2011 (Phil Plait 25 January 2008) 2007TU24 2007TU24 # Category:Minor planet object articles (unnumbered) Category:Discoveries by the Catalina Sky Survey # # # # 20071011