(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]
| Discovery[1][2] | |
|---|---|
| Discovered by | CSS |
| Discovery site | Catalina Stn. |
| Discovery date | 17 November 2009 |
| Designations | |
| (529366) 2009 WM1 | |
| 2009 WM1 | |
| Orbital characteristics[3] | |
| Epoch 27 April 2019 (JD 2458600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 8.99 yr (3,283 d) |
| Aphelion | 1.3798 AU |
| Perihelion | 0.9810 AU |
| 1.1804 AU | |
| Eccentricity | 0.1689 |
| 1.28 yr (468 d) | |
| 144.70° | |
| 0° 46m 6.6s / day | |
| Inclination | 25.768° |
| 240.27° | |
| 162.62° | |
| Earth MOID | 0.0001 AU (0.039 LD) |
| Physical characteristics | |
Mean diameter | 280 m (est.)[4] |
| Mass | 2.9×1010 kg[4] |
| 20.4[1][3] | |
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
- ^ a b c d "529366 (2009 WM1)". Minor Planet Center. Retrieved 29 May 2019.
- ^ "MPEC 2009-W30 : 2009 WM1". IAU Minor Planet Center. 18 November 2009. Retrieved 26 June 2012. (K09W01M)
- ^ a b c d e "JPL Small-Body Database Browser: 529366 (2009 WM1)" (2018-11-13 last obs.). Jet Propulsion Laboratory. Retrieved 29 May 2019.
- ^ a b c d "Earth Impact Risk Summary: 2009 WM1". Wayback Machine: NASA/JPL Near-Earth Object Program Office. Archived from the original on 27 November 2009. Retrieved 27 July 2013.
- ^ "Date/Time Removed". NASA/JPL Near-Earth Object Program Office. Archived from the original on 2 June 2002. Retrieved 2 September 2013.
- ^ "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 29 May 2019.
- ^ a b c "JPL Close-Approach Data: (2009 WM1)" (2013-07-06). Retrieved 31 January 2013.
- ^ a b "2009WM1 Ephemerides for 1 May 2014 through 15 June 2014". NEODyS (Near Earth Objects – Dynamic Site). Retrieved 1 February 2014.
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 WM1 at NeoDyS-2, Near Earth Objects—Dynamic Site
- (529366) 2009 WM1 at ESA–space situational awareness
- (529366) 2009 WM1 at the JPL Small-Body Database