2009 WM1
Discovery[1] | |
---|---|
Discovered by | Catalina Sky Survey (703) 0.68-m Schmidt |
Discovery date | 2009 Nov 17 |
Designations | |
MPC designation | 2009 WM1 |
Apollo NEO, PHA[2] |
|
Orbital characteristics[2] | |
Epoch 13 January 2016 (JD 2457400.5) | |
Uncertainty parameter 0 | |
Observation arc | 1642 days (4.50 yr) |
Aphelion | 1.3801 AU (206.46 Gm) (Q) |
Perihelion | 0.98103 AU (146.760 Gm) (q) |
1.1806 AU (176.62 Gm) (a) | |
Eccentricity | 0.16902 (e) |
1.28 yr (468.53 d) | |
302.65° (M) | |
Inclination | 25.765° (i) |
240.28° (Ω) | |
162.58° (ω) | |
Earth MOID | 0.000480406 AU (71,867.7 km) |
Jupiter MOID | 3.98384 AU (595.974 Gm) |
Physical characteristics | |
Dimensions | ~280 metres (920 ft)[3] |
Mass | 2.9×1010 kg[3] |
20.4[2] | |
2009 WM1 is an Apollo near-Earth asteroid[4] that is estimated to be 280 metres in diameter with an estimated mass of 2.9×1010 kg.[3] When the asteroid was first discovered for about a month it was briefly listed at a Torino Scale of 1 and a cumulative Palermo Scale of −0.87.[3] It was removed from the Sentry Risk Table on 26 June 2013.[5] 2009 WM1 will pass 0.0046 AU (690,000 km; 430,000 mi) from Earth on 2059-Nov-23.[6]
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.[2] 2009 WM1 will pass Earth at a distance of 0.0005 AU (75,000 km; 46,000 mi) to 0.069AU on 2199-Nov-23,[6] but since it is a close approach and the exact distance in uncertain, future close approaches after 2199 are uncertain.
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.[6] From 7 May 2014 until 2 June 2014 the asteroid will be brighter than apparent magnitude 20.[7] The asteroid will come to opposition on 18 May 2014 when it will be up all night.[7]
References
- ↑ Lua error in package.lua at line 80: module 'strict' not found. (K09W01M)
- ↑ 2.0 2.1 2.2 2.3 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ 3.0 3.1 3.2 3.3 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ smallbodies 13:52 9.10.11
- ↑ Lua error in package.lua at line 80: module 'strict' not found.
- ↑ 6.0 6.1 6.2 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ 7.0 7.1 Lua error in package.lua at line 80: module 'strict' not found.
External links
- Orbital simulation from JPL (Java) / Horizons Ephemeris
- 2009 WM1 at the JPL Small-Body Database
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