[{"@context":"http:\/\/schema.org\/","@type":"BlogPosting","@id":"https:\/\/wiki.edu.vn\/en\/wiki40\/354p-linear-wikipedia\/#BlogPosting","mainEntityOfPage":"https:\/\/wiki.edu.vn\/en\/wiki40\/354p-linear-wikipedia\/","headline":"354P\/LINEAR – Wikipedia","name":"354P\/LINEAR – Wikipedia","description":"From Wikipedia, the free encyclopedia Small solar system body 354P\/LINEAR, provisionally designated P\/2010 A2 (LINEAR), is a small main-belt asteroid","datePublished":"2014-11-16","dateModified":"2014-11-16","author":{"@type":"Person","@id":"https:\/\/wiki.edu.vn\/en\/wiki40\/author\/lordneo\/#Person","name":"lordneo","url":"https:\/\/wiki.edu.vn\/en\/wiki40\/author\/lordneo\/","image":{"@type":"ImageObject","@id":"https:\/\/secure.gravatar.com\/avatar\/c9645c498c9701c88b89b8537773dd7c?s=96&d=mm&r=g","url":"https:\/\/secure.gravatar.com\/avatar\/c9645c498c9701c88b89b8537773dd7c?s=96&d=mm&r=g","height":96,"width":96}},"publisher":{"@type":"Organization","name":"Enzyklop\u00e4die","logo":{"@type":"ImageObject","@id":"https:\/\/wiki.edu.vn\/wiki4\/wp-content\/uploads\/2023\/08\/download.jpg","url":"https:\/\/wiki.edu.vn\/wiki4\/wp-content\/uploads\/2023\/08\/download.jpg","width":600,"height":60}},"image":{"@type":"ImageObject","@id":"https:\/\/upload.wikimedia.org\/wikipedia\/commons\/thumb\/b\/bd\/P_2010_A2_Orbit.gif\/350px-P_2010_A2_Orbit.gif","url":"https:\/\/upload.wikimedia.org\/wikipedia\/commons\/thumb\/b\/bd\/P_2010_A2_Orbit.gif\/350px-P_2010_A2_Orbit.gif","height":"186","width":"350"},"url":"https:\/\/wiki.edu.vn\/en\/wiki40\/354p-linear-wikipedia\/","about":["Wiki"],"wordCount":4048,"articleBody":"From Wikipedia, the free encyclopediaSmall solar system body354P\/LINEAR, provisionally designated P\/2010 A2 (LINEAR), is a small main-belt asteroid that was impacted by another asteroid sometime before 2010. It was discovered by the Lincoln Near-Earth Asteroid Research (LINEAR) at Socorro, New Mexico on 6 January 2010. The asteroid possesses a dusty, comet-like trail of debris that remained for nearly a decade since impact.[5] This was the first time a small-body collision had been observed; since then, minor planet 596 Scheila has also been seen to undergo a collision, in late 2010. The tail is created by millimeter-sized particles being pushed back by solar radiation pressure.[7][8]Table of ContentsOverview[edit]See also[edit]References[edit]External links[edit]Overview[edit]  Orbit of P\/2010 A2 at the time of its discoveryP\/2010 A2 was discovered on 6 January 2010 by Lincoln Near-Earth Asteroid Research (LINEAR) using a 1-meter (36″) reflecting telescope with a CCD camera.[1]  It was LINEAR’s 193rd comet discovery.[9][10]  It has been observed over a 112-day arc of the 3.5 year orbit.[4]  It appears to have come to perihelion (closest approach to the Sun) around the start of December 2009,[4] about a month before it was discovered.With an aphelion (furthest distance from the Sun) of only 2.6\u00a0AU,[4] P\/2010 A2 spends all of its time inside of the frostline at 2.7\u00a0AU.[11] Beyond the frostline volatile ices are generally more common.  Early observations did not detect water vapor or other gases.[12] Within less than a month of its discovery it was doubtful that the tail of P\/2010 A2 was generated via active outgassing from sublimation of ices hidden beneath the crust.[13]  Early modeling indicated that the asteroid became active in late March 2009, reached maximum activity in early June 2009, and eased activity in early December 2009.[14]  354P\/LINEAR as seen an 8 min photo with a 24″ telescopeObservations with the Hubble Space Telescope[15] and the narrow angle camera on board the Rosetta spacecraft[16] indicate that the dust trail seen was probably created by the impact of a small meter size object on the larger asteroid in February or March 2009, although it cannot be ruled out that the asteroid’s rotation increased from solar radiation resulting in a loss of mass that formed a comet-like tail.[17]P\/2010 A2 is likely about 150 meters (460\u00a0feet) in diameter.[12] Even when it was discovered it was suspected of being less than 500 meters in diameter.[18]The orbit of P\/2010 A2 is consistent with membership in the Flora asteroid family, produced by collisional shattering more than 100 million years ago.[12]  The Flora family of asteroids may be the source of the Chicxulub (Cretaceous\u2013Paleogene) impactor, the likely culprit in the extinction of the dinosaurs.[12]Debris fieldP\/2010 A2 is likely the debris left over from a recent collision between two very small asteroids.Surviving fragmentSurviving fragment seen to the lower left of debris fieldSee also[edit]References[edit]^ a b c Marsden, Brian G. (7 January 2010). “MPEC 2010-A32\u00a0: COMET P\/2010 A2 (LINEAR)”. IAU Minor Planet Center. Harvard-Smithsonian Center for Astrophysics. Retrieved 14 January 2010.^ “When is a comet not a comet? Rosetta finds out”. ESA News. 13 October 2010. Retrieved 15 October 2010.^ JPL Horizons Observer Location: @sun (Perihelion occurs when deldot changes from negative to positive.)^ a b c d “JPL Small-Body Database Browser: P\/2010 A2 (LINEAR)” (last observation: 2012-10-14; arc: 2.83 years). Retrieved 3 February 2010.^ a b c Kim, Yoonyoung; Ishiguro, Masateru; Lee, Myung Gyoon (June 2017). “New Observational Evidence of Active Asteroid P\/2010 A2: Slow Rotation of the Largest Fragment”. The Astrophysical Journal Letters. 842 (2): 5. arXiv:1706.03924. Bibcode:2017ApJ…842L..23K. doi:10.3847\/2041-8213\/aa7944. L23.^ This absolute asteroidal V magnitude has been calculated using comet\/asteroid magnitude analysis software “Comet for Windows” from value of R = 23.0\u00b10.5 taken from IAU Circular No. 9109. The mean V-R color index for asteroids is +0.4\u00b10.1.^ HST Sees Evidence of Colliding Asteroids, Astronomy Today, Feb.2, 2010^ Jewitt, David C. “P\/2010 A2 (LINEAR): Possible Asteroid Smash”. UCLA (Department of Earth and Space Sciences). Retrieved 3 February 2010.^ Hergenrother, Carl W.; The Curious Case of Comet LINEAR, The Transient Sky, 10 January 2010 (1.8-m telescope on Kitt Peak)^ Catalogue of Comet Discoveries, Comethunter.de^ “Glossary of Astronomical Terms (Ice line)”. Glossary of Astronomical Terms. Archived from the original on 14 February 2010. Retrieved 20 January 2010.^ a b c d Harrington, J. D.; Villard, Ray (2 February 2010). “Suspected Asteroid Collision Leaves Trailing Debris”. NASA Release\u00a0: 10-029. Retrieved 3 February 2010.^ Jewitt, David C. “P\/2010 A2 (LINEAR): The 5th Main-Belt Comet”. UCLA (Department of Earth and Space Sciences). Retrieved 20 January 2010.^ M\u00e9ndez, Javier (23 July 2010). “Comet P\/2010 A2, an Activated Asteroid from the Main Asteroid Belt”. Isaac Newton Group of Telescopes (ING). Retrieved 27 July 2010.^ Jewitt, David C.; Weaver, Harold; Agarwal, Jessica; Mutchler, Max;  et\u00a0al. (2010). “A recent disruption of the main-belt asteroid P\/2010?A2”. Nature. 467 (7317): 817\u20139. Bibcode:2010Natur.467..817J. doi:10.1038\/nature09456. PMID\u00a020944743. S2CID\u00a0205222567.^ Snodgrass, Colin; Tubiana, Cecilia; Vincent, Jean-Baptiste; Sierks, Holger; Hviid, Stubbe; Moissl, Richard; Boehnhardt, Hermann; Barbieri, Cesare;  et\u00a0al. (2010). “A collision in 2009 as the origin of the debris trail of asteroid P\/2010?A2”. Nature. 467 (7317): 814\u20136. arXiv:1010.2883. Bibcode:2010Natur.467..814S. doi:10.1038\/nature09453. PMID\u00a020944742. S2CID\u00a04330570.^ Harrington, J. D.; Weaver, Donna; Jewitt, David C. (13 October 2010). “Hubble Finds that a Bizarre X-Shaped Intruder Is Linked to an Unseen Asteroid Collision”. Hubblesite newscenter STScI-2010-34. Retrieved 15 October 2010.^ Shanklin, Jonathan (18 January 2010). “BAA Comet Section\u00a0: Comets discovered in 2010”. Institute of Astronomy (British Astronomical Association). Retrieved 21 January 2010.External links[edit]"},{"@context":"http:\/\/schema.org\/","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"item":{"@id":"https:\/\/wiki.edu.vn\/en\/wiki40\/#breadcrumbitem","name":"Enzyklop\u00e4die"}},{"@type":"ListItem","position":2,"item":{"@id":"https:\/\/wiki.edu.vn\/en\/wiki40\/354p-linear-wikipedia\/#breadcrumbitem","name":"354P\/LINEAR – Wikipedia"}}]}]