Astronomy:(529366) 2009 WM1

From HandWiki
(529366) 2009 WM1
Discovery[1][2]
Discovered byCSS
Discovery siteCatalina Stn.
Discovery date17 November 2009
Designations
(529366) 2009 WM1
2009 WM1
Minor planet category
Orbital characteristics[3]
Epoch 27 April 2019 (JD 2458600.5)
Uncertainty parameter 0
Observation arc8.99 yr (3,283 d)
|{{{apsis}}}|helion}}1.3798 AU
|{{{apsis}}}|helion}}0.9810 AU
1.1804 AU
Eccentricity0.1689
Orbital period1.28 yr (468 d)
Mean anomaly144.70°
Mean motion0° 46m 6.6s / day
Inclination25.768°
Longitude of ascending node240.27°
162.62°
Earth MOID0.0001 AU (0.039 LD)
Physical characteristics
Mean diameter280 m (est.)[4]
Mass2.9×1010 kg[4]
Absolute magnitude (H)20.4[1][3]


(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

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

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 astronomical unit|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 astronomical unit|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

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

  1. ↑ 1.0 1.1 1.2 1.3 "529366 (2009 WM1)". Minor Planet Center. https://www.minorplanetcenter.net/db_search/show_object?object_id=529366. Retrieved 29 May 2019. 
  2. ↑ "MPEC 2009-W30 : 2009 WM1". IAU Minor Planet Center. 2009-11-18. https://www.minorplanetcenter.net/mpec/K09/K09W30.html. Retrieved 2012-06-26.  (K09W01M)
  3. ↑ 3.0 3.1 3.2 3.3 3.4 "JPL Small-Body Database Browser: 529366 (2009 WM1)". Jet Propulsion Laboratory. https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2529366;cad=1. Retrieved 29 May 2019. 
  4. ↑ 4.0 4.1 4.2 4.3 "Earth Impact Risk Summary: 2009 WM1". Wayback Machine: NASA/JPL Near-Earth Object Program Office. Archived from the original on November 27, 2009. https://web.archive.org/web/20091127152621/http://neo.jpl.nasa.gov/risk/2009wm1.html. Retrieved 2013-07-27. 
  5. ↑ "Date/Time Removed". NASA/JPL Near-Earth Object Program Office. http://neo.jpl.nasa.gov/risk/removed.html. Retrieved 2013-09-02. 
  6. ↑ "MPC/MPO/MPS Archive". Minor Planet Center. https://www.minorplanetcenter.net/iau/ECS/MPCArchive/MPCArchive_TBL.html. Retrieved 29 May 2019. 
  7. ↑ 7.0 7.1 7.2 "JPL Close-Approach Data: (2009 WM1)". https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2009WM1;cad=1#cad. Retrieved 2013-01-31. 
  8. ↑ 8.0 8.1 "2009WM1 Ephemerides for 1 May 2014 through 15 June 2014". NEODyS (Near Earth Objects – Dynamic Site). https://newton.spacedys.com/neodys/index.php?pc=1.1.3.1&n=2009WM1&oc=500&y0=2014&m0=5&d0=1&h0=0&mi0=0&y1=2014&m1=6&d1=15&h1=0&mi1=0&ti=1.0&tiu=days. Retrieved 2014-02-01. 

External links



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