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A p p e a r a n c e
F r o m W i k i p e d i a , t h e f r e e e n c y c l o p e d i a
Scheila (minor planet designation : 596 Scheila ) is a main-belt asteroid [1] main-belt comet [2] Sun . It was discovered on 21 February 1906 by August Kopff from Heidelberg .[1] [5]
Overview
[ edit ] Scheila imaged by the Hubble Space Telescope on 7 December 2010, with visible features marked. Scheila imaged by Neil Gehrels Swift Observatory 's ultraviolet-optical telescope on 15 December 2010
On 11 December 2010, Steve Larson of the Catalina Sky Survey detected a comet-like appearance to asteroid Scheila: it displayed a "coma " of about magnitude 13.5.[6] [7] Faulkes Telescope North revealed a linear tail in the anti-sunward direction and an orbital tail, indicative of larger slower particles.[8]
When first detected it was unknown what drove the ejecta plumes. Scheila's gravity is too large for electrostatics to launch dust.[2] outgassing could not be ruled out until detailed spectroscopic observations indicated the absence of gas in Scheila's plumes.[4] Hubble Space Telescope and the Neil Gehrels Swift Observatory 's ultraviolet-optical telescope make it most likely that Scheila was impacted at ~5 km/s by a previously unknown asteroid ~35 meters in diameter.[3] [4] [4]
As a consequence of the 2010 impact, the surface spectrum of Scheila changed, from a moderately red T-type spectrum to a more reddish D-type spectrum , showing how "fresh" material weathers over time in space. This is similar to laboratory experiments done on the Tagish Lake meteorite .[9]
Scheila last came to perihelion on 2022 May 26.[1]
See also
[ edit ]
References
[ edit ]
^ a b c Jewitt, David; Weaver, H.; Mutcher, M.; Larson, S.; Agarwal, J. (2011). "Hubble Space Telescope Observations of Main Belt Comet (596) Scheila". Astrophysical Journal Letters . 733 (1 ): L4. arXiv :1103.5456 Bibcode :2011ApJ...733L...4J . doi :10.1088/2041-8205/733/1/l4 . S2CID 50809352 .
^ a b c d e Bodewits, Dennis; Kelley, M. S.; Li, J. -Y.; Landsman, W. B.; Besse, S.; A'Hearn, M. F. (2011). "Collisional Excavation of Asteroid (596) Scheila". Astrophysical Journal Letters . 733 (1 ): L3. arXiv :1104.5227 Bibcode :2011ApJ...733L...3B . doi :10.1088/2041-8205/733/1/L3 . S2CID 54187826 .
^ Schmadel, Lutz D. (2003). Dictionary of Minor Planet Names ISBN 978-3-540-00238-3
^ Ernesto Guido & Giovanni Sostero (12 December 2010). "Comet-like appearance of (596) Scheila" . Remanzacco Observatory in Italy (blog). Archived from the original on 7 January 2011. Retrieved 12 December 2010 .
^ Mike Simonsen (12 December 2010). "A Comet Masquerading as an Asteroid" . Simostronomy (blog). Retrieved 12 December 2010 .
^ Richard Miles's posting on Yahoo minor planet mailing list (MPML)
^
External links
[ edit ]
Comet-like appearance of (596) Scheila (Remanzacco Observatory)
What's up with Scheila (596) (AARTScope Blog)
Joseph Brimacombe animation on flickr
(596) Scheila 2010-12-12 10:45:39UT (cbellh47 @ flickr)
(596) Scheila by Rolando Ligustri (CAST-Italia)
Comet-like appearance of (596) Scheila [dead link MPML at Yahoo Groups)
Asteroid 596 Scheila "Outburst" (Unmanned SpaceFlight)
asteroid 596 Scheila goes cometary! (Cloudy Nights)
UA Catalina Sky Survey Discovers Possible Extinct Comet [usurped]
NASA's Swift and Hubble Probe Asteroid Collision Debris (04.28.11)
Yang, Bin; Hsieh, Henry (2011). "Near-Infrared Observations of Comet-Like Asteroid (596) Scheila". The Astrophysical Journal . 737 (2 ): L39. arXiv :1107.3845 Bibcode :2011ApJ...737L..39Y . doi :10.1088/2041-8205/737/2/L39 .
Ishiguro, Masateru; Hanayama, Hidekazu; Hasegawa, Sunao; Sarugaku, Yuki; Watanabe, Jun-Ichi; Fujiwara, Hideaki; Terada, Hiroshi; Hsieh, Henry H.; Vaubaillon, Jeremie J.; Kawai, Nobuyuki; Yanagisawa, Kenshi; Kuroda, Daisuke; Miyaji, Takeshi; Fukushima, Hideo; Ohta, Kouji; Hamanowa, Hiromi; Kim, Junhan; Pyo, Jeonghyun; Nakamura, Akiko M. (2011). "Interpretation of (596) Scheila's Triple Dust Tails". The Astrophysical Journal . 741 (1 ): L24. arXiv :1110.1150 Bibcode :2011ApJ...741L..24I . doi :10.1088/2041-8205/741/1/L24 .
The cause of asteroid Scheila’s outburst (EPSC-DPS JOINT MEETING 2011 PRESS NOTICE)
Lightcurve plot of 596 Scheila , Palmer Divide Observatory, B. D. Warner
596 Scheila at AstDyS-2, Asteroids—Dynamic Site
596 Scheila at the JPL Small-Body Database
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R e t r i e v e d f r o m " https://en.wikipedia.org/w/index.php?title=596_Scheila&oldid=1213101918 " C a t e g o r i e s : ● M i n o r p l a n e t o b j e c t a r t i c l e s ( n u m b e r e d ) ● B a c k g r o u n d a s t e r o i d s ● A c t i v e a s t e r o i d s ● D i s c o v e r i e s b y A u g u s t K o p f f ● N a m e d m i n o r p l a n e t s ● S m a l l - a s t e r o i d s c o l l i s i o n ● P C D - t y p e a s t e r o i d s ( T h o l e n ) ● T - t y p e a s t e r o i d s ( S M A S S ) ● A s t r o n o m i c a l o b j e c t s d i s c o v e r e d i n 1 9 0 6 H i d d e n c a t e g o r i e s : ● A r t i c l e s w i t h s h o r t d e s c r i p t i o n ● S h o r t d e s c r i p t i o n m a t c h e s W i k i d a t a ● U s e d m y d a t e s f r o m O c t o b e r 2 0 1 9 ● A l l a r t i c l e s w i t h d e a d e x t e r n a l l i n k s ● A r t i c l e s w i t h d e a d e x t e r n a l l i n k s f r o m D e c e m b e r 2 0 2 3 ● A r t i c l e s w i t h J P L S B D B i d e n t i f i e r s ● A r t i c l e s w i t h M P C i d e n t i f i e r s
● T h i s p a g e w a s l a s t e d i t e d o n 1 1 M a r c h 2 0 2 4 , a t 0 4 : 0 1 ( U T C ) . ● T e x t i s a v a i l a b l e u n d e r t h e C r e a t i v e C o m m o n s A t t r i b u t i o n - S h a r e A l i k e L i c e n s e 4 . 0 ;
a d d i t i o n a l t e r m s m a y a p p l y . B y u s i n g t h i s s i t e , y o u a g r e e t o t h e T e r m s o f U s e a n d P r i v a c y P o l i c y . W i k i p e d i a ® i s a r e g i s t e r e d t r a d e m a r k o f t h e W i k i m e d i a F o u n d a t i o n , I n c . , a n o n - p r o f i t o r g a n i z a t i o n . ● P r i v a c y p o l i c y ● A b o u t W i k i p e d i a ● D i s c l a i m e r s ● C o n t a c t W i k i p e d i a ● C o d e o f C o n d u c t ● D e v e l o p e r s ● S t a t i s t i c s ● C o o k i e s t a t e m e n t ● M o b i l e v i e w
