2010 AU118

Mars-crossing asteroid February 2018 {{DISPLAYTITLE:2010 AU118}} #FA8072 2010 AU 118 WISE (C51) 27 May 2010 2010 AU 118 2025 ES 3 Mars-crossing 21 November 2025 2 5,556 days (15.21 years) 0.401984 AU km on 4.40099 AU (Q) 1.37270 AU (q) 2.88684 AU (a) 0.524497 4.90505 years (1,791.57 days) 42.4926° 49.5165° 115.811° (M) 18.2944° ~1.9 km 9.7e11 kg (assumed) 17.28 2010 AU 118 is a Mars-crosser asteroid on an eccentric and highly inclined orbit with an observation arc of 5,556 days. It was announced on 27 May 2010 based on images taken by the Wide-field Infrared Survey Explorer (WISE) on 13–15 January 2010. It was removed from the Sentry Risk Table on 14 June 2014 as a result of an update to the Sentry software. Another software update restored it to the Sentry Risk Table in 2017. It was again removed from the sentry list on 3 October 2018. The asteroid was rediscovered as 2025 ES 3 on 1 March 2025. This extended the observation arc from 1.4 days to 15 years.IAU Minor Planet Center https://www.minorplanetcenter.net/db_search/show_object?utf8=%E2%9C%93&object_id=K10AB8U 2026-02-13 www.minorplanetcenter.net 2010 AU 118 was observed 19 times over a very short observation arc of 1.4 days during 13–15 January 2010, and a further 19 times up to 31 March 2025. On 14 January 2010 the asteroid was estimated to have been 1.8 AU km mi on from Earth with an uncertainty in the asteroids distance of ±300 million km. The asteroid's orbit might not get closer than Mars and/or reach beyond Jupiter. WISE estimates the asteroid to be 1900 m ft us in diameter. In 2018, 2010 AU 118 was the largest object listed on the Sentry Risk Table. It has an uncertainty parameter of 2. Virtual clones of the asteroid that fit the uncertainty region in the known trajectory, showed a 1 in 770 million chance that the asteroid would have impacted the Earth on 20 October 2020. With a Palermo Technical Scale of −3.14, the odds of an impact by 2010 AU 118 in 2020 were about 1400 times less than the background hazard level of Earth impacts, which is defined as the average risk posed by objects of the same size or larger over the years until the date of the potential impact. NEODyS lists the nominal 20 October 2020 Earth distance as 3 AU km mi on. References last observation: 2025-03-31; arc: 5,556 days JPL Small-Body Database Browser: (2010 AU118) http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2010AU118 https://archive.today/20121213124020/http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2010AU118 2012-12-13 live Jet Propulsion Laboratory 2012-03-17 MPEC 2010-K65 : 2010 AU118 IAU Minor Planet Center 2010-05-27 http://www.minorplanetcenter.org/mpec/K10/K10K65.html 2012-03-17 (K10AB8U) Earth Impact Risk Summary: 2010 AU118 NASA/JPL Near-Earth Object Program Office https://cneos.jpl.nasa.gov/sentry/details.html#?des=2010%20AU118 2014-06-27 https://web.archive.org/web/20140403145151/http://neo.jpl.nasa.gov/risk/2010au118.html 2014-04-03 live Math: 103.14 = 1380 31 Aug 2005 The Palermo Technical Impact Hazard Scale NASA/JPL Near-Earth Object Program Office http://neo.jpl.nasa.gov/risk/doc/palermo.html https://web.archive.org/web/20020321092747/http://neo.jpl.nasa.gov/risk/doc/palermo.html dead 21 March 2002 2011-10-14 Date/Time Removed 2016-12-25 NASA/JPL Near-Earth Object Program Office http://neo.jpl.nasa.gov/risk/removed.html dead https://web.archive.org/web/20161225181905/http://neo.jpl.nasa.gov/risk/removed.html 2016-12-25 2010AU118 Ephemerides for 20 October 2020 NEODyS (Near Earth Objects Dynamic Site) http://newton.spacedys.com/neodys/index.php?pc=1.1.3.1&n=2010AU118&oc=500&y0=2020&m0=10&d0=15&h0=0&mi0=0&y1=2020&m1=10&d1=25&h1=0&mi1=0&ti=1.0&tiu=days 2018-01-23 External links 2010+AU118 2010AU118 3525641 Category:Minor planet object articles (unnumbered) # # 20100527