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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 naming[edit]

This 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 classification[edit]

2009 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 passage[edit]

The 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[edit]

External links[edit]

• List of the Potentially Hazardous Asteroids (PHAs), Minor Planet Center
• List Of Apollo Minor Planets (by designation), Minor Planet Center
• (529366) 2009 WM1atNeoDyS-2, Near Earth Objects—Dynamic Site
  • Ephemerides · Observation prediction · Orbital info · MOID · Proper elements · Observational info · Close approaches · Physical info · Orbit animation
• (529366) 2009 WM1atESA–space situational awareness
  • Ephemerides · Observations · Orbit · Physical properties · Summary
• (529366) 2009 WM1 at the JPL Small-Body Database
  • Close approach · Discovery · Ephemeris · Orbit diagram · Orbital elements · Physical parameters