2012 KT42

Asteroid February 2018 yes #FFC2E0 2012 KT 42 Apollo NEO 0.55470 1.5977 AU Gm on 0.71144 AU Gm on 261.31° 2.1932° 69.515° 94.628° 2.02 yr (737.60 d) 2.4839 AU Gm on on ~4 - 10 metres 29 29.0 13 January 2016 (JD 2457400.5) 259.13° 0.48807 ms / day 0.06057 h min on on 5 0.000968708 AU km on 2012 KT 42 is an Apollo near-Earth asteroid first observed by astronomer Alex R. Gibbs of the Mount Lemmon Survey with a 1.5-meter reflecting telescope on 28 May 2012. Overview The asteroid had a close approach to the Earth on 29 May 2012, approaching to only ~8950 miles (~14,440 km) above the planet's surface. This means 2012 KT 42 came inside the Clarke Belt of geosynchronous satellites. In May 2012, the estimated 5- to 10-metre-wide asteroid ranked #6 on the top 20 list of closest-approaches to Earth. There was no danger of a collision during the close approach. 2012 KT 42 passed roughly 0.01 AU km mi on on from Venus on 8 July 2012. It is estimated that an impact would produce an upper atmosphere air burst equivalent to 11 kt TNT, roughly equal to Hiroshima's Little Boy. The asteroid would be vaporized as these small impacts occur approximately once per year. A comparable-sized object caused the Sutter's Mill meteorite in California on 2 April 2012. It was removed from the Sentry Risk Table on 30 May 2012. References last observation: 2012-05-29; arc: 1 day; uncertainty: 5 JPL Close-Approach Data: (2012 KT42) http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2012KT42;cad=1#cad 1 April 2016 Earth Impact Risk Summary: 2012 KT42 NASA/JPL Near-Earth Object Program Office http://neo.jpl.nasa.gov/risk/2012kt42.html 2012-05-29June 2021 medicmedic 2012-05-29 2012 KT42 Orbit Minor Planet Center http://www.minorplanetcenter.net/db_search/show_object?object_id=2012+KT42 2012-05-30 Conversion of Absolute Magnitude to Diameter Minor Planet Center http://www.minorplanetcenter.net/iau/lists/Sizes.html 2012-05-30 Date/Time Removed NASA/JPL Near-Earth Object Program Office http://neo.jpl.nasa.gov/risk/removed.html https://web.archive.org/web/20020602101400/http://neo.jpl.nasa.gov/risk/removed.html dead 2002-06-02 2012-05-30 External links JPL Small-Body Database Browser for 2012 KT42 2012 KT42 - Close Approach (Remanzacco Observatory in Italy) Images from Flyby (spaceweather.com) MPEC 2012-K66 : 2012 KT42 (Minor Planet Center Discovery announcement) Planetary Defense Blog post on 2012 KT42 Video: Tiny Asteroid 2012 KT42 Crossing The Sky (universetoday 29 May 2012) The Peculiar Flyby of Asteroid 2012 KT42 (Pasquale Tricarico : 29 May 2012) 2012+KT42 2012KT42 # Category:Minor planet object articles (unnumbered) # 20120529 20120528