596 Scheila.pdf

596 Scheila 596 Scheila is a main-belt asteroid [1] and main-belt comet [2] orbiting the Sun. It was discovered on 21 Febru- ary 1906 by August Kopff from Heidelberg. [1] Kopff named the asteroid after a female English student with whom he was acquainted. [5] On December 11.4 2010, Steve Larson of the Catalina Sky Survey detected a comet-like appearance to aster- oid Scheila: it displayed a coma of about magnitude 13.5. [6] Inspection of archival Catalina Sky Survey obse
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  596 Scheila 596 Scheila  is a main-belt asteroid [1] and main-beltcomet [2] orbiting the Sun. It was discovered on 21 Febru-ary 1906 by August Kopff from Heidelberg. [1] Kopffnamed the asteroid after a female English student withwhom he was acquainted. [5] On December 11.4 2010, Steve Larson of the CatalinaSky Survey detected a comet-like appearance to aster-oid Scheila: it displayed a coma of about magnitude 13.5. [6] InspectionofarchivalCatalinaSky Surveyobser-vations showed the activity was triggered between 2010November 11 and December 3. [7] Imaging with the 2-meter Faulkes Telescope North revealed a linear tail inthe anti-sunward direction and an orbital tail, indicativeof larger slower particles. [8] When first detected it was unknown what drove the ejectaplumes. Scheila’s gravity is too large for electrostatics tolaunch dust. [2] Cometary outgassing could not be ruledoutuntildetailedspectroscopicobservationsindicatedtheabsence of gas in Scheila’s plumes. [4] Observations by theHubbleSpaceTelescopeandtheSwiftGammaRayBurstMission’s UV-optical telescope make it most likely thatScheilawasimpactedat~5km/sbyapreviouslyunknown asteroid~35metersindiameter. [3][4] In2010, theHubbleSpaceTelescopeobservedtheaftermathofacatastrophiccollision that destroyed the much smaller asteroid P/2010A2. Each asteroid the size of Scheila might be hit by animpactor10–100metersindiameterapproximatelyevery1000 years, so with 200 asteroids of this size or bigger inthe asteroid belt, we can observe a collision as often asevery 5 years. [4] Scheila last came to perihelion on 2012 May 19. [1] 1 References [1] “JPL Small-Body Database Browser: 596 Scheila (1906UA) . 2010-11-14 last obs. Retrieved 2012-12-12.Check date values in: |date= (help)[2] David C. Jewitt. “Main Belt Comets”. UCLA, Depart- ment of Earth and Space Sciences. Retrieved 2010-12-15.[3] Jewitt, David; Weaver, H.; Mutcher, M.; Larson, S.;Agarwal, J. (2011). “Hubble Space Telescope Obser-vations of Main Belt Comet (596) Scheila”.  ApJL  733 :L4. arXiv:1103.5456. Bibcode:2011arXiv1103.5456J. doi:10.1088/2041-8205/733/1/l4. [4] Bodewits, Dennis; Kelley, M. S.; Li, J. -Y.; Landsman,W. B.; Besse, S.; A'Hearn, M. F. (2011). “CollisionalExcavation of Asteroid (596) Scheila”.  ApJ Letters   733 :L3. arXiv:1104.5227. Bibcode:2011ApJ...733L...3B. doi:10.1088/2041-8205/733/1/L3. [5] Lutz D. Schmadel,  Dictionary of Minor Planet Names  , p.61[6] Ernesto Guido & Giovanni Sostero (2010-12-12).“Comet-like appearance of (596) Scheila”. RemanzaccoObservatory in Italy (blog). Archived from the srcinalon 7 January 2011. Retrieved 2010-12-12.[7] Mike Simonsen (2010-12-12). “A Comet Masqueradingas an Asteroid”. Simostronomy (blog). Retrieved 2010-12-12.[8] Richard Miles’s posting on Yahoo minor planet mailinglist (MPML) 2 External links ã  Orbital simulation from JPL (Java) / Ephemeris ã  Comet-like appearance of (596) Scheila (Remanza-cco Observatory) ã  What’s up with Scheila (596) (AARTScope Blog) ã  Joseph Brimacombe animation on flckr ã  (596) Scheila 2010-12-12 10:45:39UT (cbellh47 @flckr) ã  (596) Scheila by Rolando Ligustri (CAST-Italia) ã  Comet-like appearance of (596) Scheila (MPML at Yahoo Groups) ã  Asteroid596Scheila“Outburst”(UnmannedSpace-Flight) ã  asteroid 596 Scheila goes cometary! (CloudyNights) ã  UA Catalina Sky Survey Discovers Possible ExtinctComet (University of Arizona 2010 Dec 21) ã  NASA’s Swift and Hubble Probe Asteroid CollisionDebris (04.28.11) ã  NearInfraredObservationsofComet-LikeAsteroid(596) Scheila (arXiv:1107.3845 : 19 Jul 2011) ã  Interpretation of (596) Scheila’s Triple Dust Tails(arXiv:1110.1150 : 6 Oct 2011) ã  ThecauseofasteroidScheila’soutburst(EPSC-DPSJOINT MEETING 2011 PRESS NOTICE)1  2  3 TEXT AND IMAGE SOURCES, CONTRIBUTORS, AND LICENSES  3 Text and image sources, contributors, and licenses 3.1 Text ã  596 Scheila  Source:  Contributors:   Merovingian, Jyril, Python eggs, RichFarmbrough, Kwamikagami, Rjwilmsi, Mike s, YurikBot, RussBot, Mairibot, JorisvS, Thijs!bot, TAnthony, .anacondabot, Magioladi-tis, T@nn, Kheider,, TXiKiBoT, Alexbot, Scapler, Addbot, NjardarBot, Numbo3-bot, Lightbot, Drpickem, Luckas-bot,Yobot, Amirobot, Việt Chi, AnomieBOT, Obersachsebot, Xqbot, Arsia Mons, GrouchoBot, SassoBot, Fotaun, Alexchen4836, DASHBot,EmausBot, ZéroBot, Makecat, Fjörgynn, Bibcode Bot and Anonymous: 8 3.2 Images ã  File:596-2010-12-12-12hr-UT.jpg  Source: License:   CC-BY-SA-3.0  Contributors:   This image was taken by Kevin Heider using LB-001 at LightBuckets in Rodeo, NM Raw image from telescope (Wiki version rotated 180 degrees to match Wikisky view) Original artist:   Kevin Heider @ LightBuckets 3.3 Content license ã  Creative Commons Attribution-Share Alike 3.0
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