2012 KP24
| Discovery[1] | |
|---|---|
| Discovered by | MLS |
| Discovery site | Mount Lemmon Obs. |
| Discovery date | 23 May 2012 |
| Designations | |
| 2012 KP24 | |
| Apollo·NEO[2] | |
| Orbital characteristics[2] | |
| Epoch2022-Aug-09 (JD2459800.5) | |
| Uncertainty parameter6 | |
| Observation arc | 5 days |
| Aphelion | 2.0514AU(Q) |
| Perihelion | 0.94483AU(q) |
| 1.4981 AU(a) | |
| Eccentricity | 0.36932(e) |
| 1.83 years | |
| 182.83°(M) | |
| 0° 32m14.388s/day | |
| Inclination | 18.467°(i) |
| 67.445°(Ω) | |
| ~2023-Jul-04 | |
| 221.51°(ω) | |
| EarthMOID | 0.0002AU(30,000km;0.078LD) |
| Physical characteristics | |
| 17m[3] | |
| Mass | 7.2×106kg(est.)[3] |
| 0.041667h[2] | |
| 13.3(2012 passage)[4] 21.6?(2023 passage)[5] | |
| 26.4[2] | |
2012 KP24(also written2012 KP24) is aChelyabinsk-sizednear-Earthasteroidwith anobservation arcof only 5 days and has a modestly determinedorbitfor an object of its size.[2]Around 31 May 2023 ±3 days it will pass between 0.19–24lunar distances(73,000–9,200,000km) from Earth.[2]Nominally theasteroidis expected to pass 0.026AU(3,900,000km;10LD) from Earth and brighten to aroundapparent magnitude21.6.[5]
It is afast rotatorthat rotates in 0.04 hours (2.4 min).[2]The asteroid is estimated to be 17 meters (56 ft) in diameter.[3]It will next come toperihelion(closest approach to the Sun) around 4 July 2023.[2]It has an orbitaluncertainty parameterof 6.[2]
2012
[edit]It was discovered on 23 May 2012 by theMount Lemmon Surveyat anapparent magnitudeof 20.8 using a 1.5-meter (59 in)reflecting telescope.[1]On 28 May 2012 at 15:20UT,the asteroid passed 0.00038AU(57,000km;35,000mi) from the center-point of Earth.[2]It then reached perihelion on 2 July 2012. It was removed from theSentry Risk Tableon 8 August 2013 after Sentry updated to planetaryephemeris(DE431).[6]
2032
[edit]Newer versions of Sentry returned the object to the risk table. Virtual clones of the asteroid that fit the uncertainty region in the known trajectory show a 1 in 2.1 million chance that the asteroid couldimpactEarth on 2032 May 28.[3]With aPalermo Technical Scaleof −6.30,[3]the odds of impact by2012 KP24in 2032 are about 2 million times less[7]than the background hazard level of Earth impacts which is defined as the average risk posed by objects of the same size or larger over the years until the date of the potential impact.[8]
References
[edit]- ^ab"MPEC 2012-K52: 2012 KP24".IAU Minor Planet Center.24 May 2010.Retrieved2 March2013.(K12K24P)
- ^abcdefghij"JPL Small-Body Database: (2012 KP24)"(last observation: 2012-05-28;arc:5 days).Archivedfrom the original on 8 March 2013.Retrieved1 April2016.
- ^abcde"Earth Impact Risk Summary: 2012 KP24".NASA/JPL Near-Earth Object Program Office.Archivedfrom the original on 12 May 2013.Retrieved18 October2022.(1.1e-07= 1 in 9,091,000 chance)
- ^"2012KP24 Ephemerides for 28 May 2012".NEODyS (Near Earth Objects – Dynamic Site).Retrieved2 March2013.
- ^ab"Horizons Batch for 2023-05-31 NOMINAL".JPL Horizons.Retrieved18 October2022.
- ^"Date/Time Removed".NASA/JPL Near-Earth Object Program Office. Archived fromthe originalon 18 October 2013.Retrieved11 August2013.
- ^Math: 106.30= 1,995,262
- ^"The Palermo Technical Impact Hazard Scale".NASA/JPL Near-Earth Object Program Office. 31 August 2005. Archived fromthe originalon 21 March 2002.Retrieved14 October2011.
External links
[edit]- 2012 KP24atNeoDyS-2, Near Earth Objects—Dynamic Site
- 2012 KP24atESA–space situational awareness
- 2012 KP24at theJPL Small-Body Database
2012 in space | ||
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Space probe launches |
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| SelectedNEOs | ||
| Exoplanets |
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| Space exploration | ||
