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(529366) 2009 WM1
(529366) 2009 WM1, provisional designation 2009 WM1, is a sub-kilometer asteroid and near-Earth object of the Apollo group, approximately 280 meters (920 feet) in diameter.[4] After its discovery by the Catalina Sky Survey at the Catalina Station in Arizona, United States, this potentially hazardous asteroid was briefly listed at a Torino Scale of 1 and a cumulative Palermo Scale of −0.87.[4] It was removed from the Sentry Risk Table on 26 June 2013.[5] Numbering and namingThis minor planet was numbered by the Minor Planet Center on 18 May 2019 (M.P.C. 114667).[6] As of 2019, it has not been named.[1] Orbit and classification2009 WM1 orbits the Sun at a distance of 0.98–1.38 AU once every 15 months (468 days; semi-major axis of 1.18 AU). Its orbit has an eccentricity of 0.17 and an inclination of 26° with respect to the ecliptic.[3] Even though 2009 WM1 has an Earth MOID of 0.00009 AU (13,000 km; 8,400 mi), the orbit and future close approaches are well determined with an orbital uncertainty of 1.[3] On 23 November 2059, 2009 WM1 will pass 0.0046 AU (690,000 km; 430,000 mi) from Earth.[7] On 23 November 2199, it will make another close approach at a distance of 0.0005 AU (75,000 km; 46,000 mi) to 0.069 AU, but since it is a close approach and the exact distance in uncertain, future close approaches after 2199 are uncertain.[7] 2014 passageThe 21 May 2014 Earth close approach of 0.3622 AU (54,180,000 km; 33,670,000 mi) should allow a refinement to the orbit.[7] From 7 May 2014 until 2 June 2014 the asteroid will be brighter than apparent magnitude 20.[8] The asteroid will come to opposition on 18 May 2014 when it will be up all night.[8] References
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