54509 YORP (provisional designation2000 PH5) is an Earth co-orbital asteroid[5] discovered on 3 August 2000 by the Lincoln Laboratory Near-Earth Asteroid Research (LINEAR) Team at Lincoln Laboratory Experimental Test Site in Socorro, New Mexico. Measurements of the rotation rate of this object provided the first observational evidence of the YORP effect, hence the name of the asteroid. The asteroid's rate of rotation is increasing at the rate of (2.0 ± 0.2) × 10−4 deg/day2 which between 2001 and 2005 caused the asteroid to rotate about 250° further than its spin rate in 2001 would have predicted.[4] Simulations of the asteroid suggest that it may reach a rotation period of ~20 seconds near the end of its expected lifetime, which has a 75% probability of happening within the next 35 million years.[6] The simulations also ruled out the possibility that close encounters with the Earth have been the cause of the increased spin rate.[6]
On 2 January 2104, asteroid YORP will pass 0.00526 AU (787,000 km; 489,000 mi) from Earth.[7]
YORP is the largest member of a candidate asteroid family, another member of which is 2017 FZ2, that would have been formed through shedding of fragments of YORP or the breakup of a larger progenitor due to the YORP effect.[8]
^ abcdeTaylor, Patrick A.; et al. (13 April 2007). "Spin Rate of Asteroid (54509) 2000 PH5 Increasing Due to the YORP Effect" (PDF). Science. 316 (5822): 274–277. Bibcode:2007Sci...316..274T. doi:10.1126/science.1139038. PMID 17347415. S2CID 29191700.
^Christou, Apostolos A.; Asher, David J. (2011). "A long-lived horseshoe companion to the Earth". Preprint. 414 (4): 2965–2969. arXiv:1104.0036. Bibcode:2011MNRAS.414.2965C. doi:10.1111/j.1365-2966.2011.18595.x. S2CID 13832179.
^ abLowry, Stephen C.; et al. (13 April 2007). (PDF). Science. 316 (5822): 272–274. Bibcode:2007Sci...316..272L. doi:10.1126/science.1139040. PMID 17347414. S2CID 26687221. Archived from the original (PDF) on 24 July 2011.
^de la Fuente Marcos, Carlos; de la Fuente Marcos, Raúl (21 January 2018). "Asteroid 2017 FZ2 et al.: signs of recent mass-shedding from YORP?". Monthly Notices of the Royal Astronomical Society. 473 (3): 3434–3453. arXiv:1709.09379. Bibcode:2018MNRAS.473.3434D. doi:10.1093/mnras/stx2540.
Further readingedit
Mueller, Michael (2007). "Surface Properties of Asteroids from Mid-Infrared Observations and Thermophysical Modeling". Doctoral Dissertation.
External linksedit
54509 YORP at NeoDyS-2, Near Earth Objects—Dynamic Site
Ephemerides · Observation prediction · Orbital info · MOID · Proper elements · Observational info · Close approaches · Physical info · Orbit animation
Close approach · Discovery · Ephemeris · Orbit diagram · Orbital elements · Physical parameters
April 12, 2024
54509, yorp, provisional, designation, 2000, earth, orbital, asteroid, discovered, august, 2000, lincoln, laboratory, near, earth, asteroid, research, linear, team, lincoln, laboratory, experimental, test, site, socorro, mexico, measurements, rotation, rate, t. 54509 YORP provisional designation 2000 PH5 is an Earth co orbital asteroid 5 discovered on 3 August 2000 by the Lincoln Laboratory Near Earth Asteroid Research LINEAR Team at Lincoln Laboratory Experimental Test Site in Socorro New Mexico Measurements of the rotation rate of this object provided the first observational evidence of the YORP effect hence the name of the asteroid The asteroid s rate of rotation is increasing at the rate of 2 0 0 2 10 4 deg day2 which between 2001 and 2005 caused the asteroid to rotate about 250 further than its spin rate in 2001 would have predicted 4 Simulations of the asteroid suggest that it may reach a rotation period of 20 seconds near the end of its expected lifetime which has a 75 probability of happening within the next 35 million years 6 The simulations also ruled out the possibility that close encounters with the Earth have been the cause of the increased spin rate 6 54509 YORPRadar image and 3D model of YORPDiscovery 1 Discovered byLINEARDiscovery siteLincoln Lab s ETSDiscovery date3 August 2000DesignationsMPC designation 54509 YORPNamed afterYORP effectAlternative designations2000 PH5Minor planet categoryApollo NEOOrbital characteristics 2 3 Epoch 20 March 2003 JD 2452718 5 Uncertainty parameter 0Observation arc1826 days 5 00 yr Aphelion1 22998 AU 184 002 Gm Perihelion0 77013 AU 115 210 Gm Semi major axis1 00005 AU 149 605 Gm Eccentricity0 22991Orbital period sidereal 1 00 yr 365 29 d Average orbital speed29 31 km sMean anomaly314 13265 Mean motion0 59m 7 901s dayInclination1 83313 Longitude of ascending node281 88673 Argument of perihelion274 101 Earth MOID0 00268922 AU 402 302 km Jupiter MOID3 72701 AU 557 553 Gm TJupiter6 056Physical characteristicsDimensions150 128 93 m 4 Synodic rotation period0 2029 h 12 17 min Sidereal rotation period0 2029 h12 174 min 3 Axial tilt173 4 Pole ecliptic latitude 85 4 Pole ecliptic longitude180 4 Geometric albedo0 10 Temperature 278 KAbsolute magnitude H 22 7On 2 January 2104 asteroid YORP will pass 0 00526 AU 787 000 km 489 000 mi from Earth 7 YORP is the largest member of a candidate asteroid family another member of which is 2017 FZ2 that would have been formed through shedding of fragments of YORP or the breakup of a larger progenitor due to the YORP effect 8 Contents 1 Gallery 2 See also 3 References 4 Further reading 5 External linksGallery editAnimation of 54509 YORP orbit from 1600 to 2500 nbsp Relative to Sun and Earth nbsp Around Earth nbsp Around Sun Sun Earth 54509 YORPSee also edit1620 Geographos 1862 Apollo 25143 ItokawaReferences edit Discovery Circumstances Numbered Minor Planets The Asteroid Orbital Elements Database astorb Lowell Observatory a b 54509 YORP JPL Small Body Database Jet Propulsion Laboratory SPK ID 54509 Retrieved 12 April 2016 a b c d e Taylor Patrick A et al 13 April 2007 Spin Rate of Asteroid 54509 2000 PH5 Increasing Due to the YORP Effect PDF Science 316 5822 274 277 Bibcode 2007Sci 316 274T doi 10 1126 science 1139038 PMID 17347415 S2CID 29191700 Christou Apostolos A Asher David J 2011 A long lived horseshoe companion to the Earth Preprint 414 4 2965 2969 arXiv 1104 0036 Bibcode 2011MNRAS 414 2965C doi 10 1111 j 1365 2966 2011 18595 x S2CID 13832179 a b Lowry Stephen C et al 13 April 2007 Direct Detection of the Asteroidal YORP Effect PDF Science 316 5822 272 274 Bibcode 2007Sci 316 272L doi 10 1126 science 1139040 PMID 17347414 S2CID 26687221 Archived from the original PDF on 24 July 2011 JPL Close Approach Data 54509 YORP 2000 PH5 last observation 2005 08 03 arc 5 yr Retrieved 28 February 2015 de la Fuente Marcos Carlos de la Fuente Marcos Raul 21 January 2018 Asteroid 2017 FZ2 et al signs of recent mass shedding from YORP Monthly Notices of the Royal Astronomical Society 473 3 3434 3453 arXiv 1709 09379 Bibcode 2018MNRAS 473 3434D doi 10 1093 mnras stx2540 Further reading editMueller Michael 2007 Surface Properties of Asteroids from Mid Infrared Observations and Thermophysical Modeling Doctoral Dissertation External links edit54509 YORP at NeoDyS 2 Near Earth Objects Dynamic Site Ephemerides Observation prediction Orbital info MOID Proper elements Observational info Close approaches Physical info Orbit animation 54509 YORP at ESA space situational awareness Ephemerides Observations Orbit Physical properties Summary 54509 YORP at the JPL Small Body Database nbsp Close approach Discovery Ephemeris Orbit diagram Orbital elements Physical parameters Retrieved from https en wikipedia org w index php title 54509 YORP amp oldid 1197583360, wikipedia, wiki, book, books, library,
