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P a g e s f o r l o g g e d o u t e d i t o r s l e a r n m o r e ● C o n t r i b u t i o n s ● T a l k
( T o p )
1 D i s c o v e r y a n d n a m i n g
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T o g g l e t h e t a b l e o f c o n t e n t s
( 5 2 8 2 1 9 ) 2 0 0 8 K V 42
1 3 l a n g u a g e s
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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
( R e d i r e c t e d f r o m 2 0 0 8 K V 4 2 )
(528219) 2008 KV42 provisional designation : 2008 KV42 ; nicknamed Drac )[3] trans-Neptunian object and the first one with a retrograde orbit to be discovered. This retrograde motion with an orbital inclination of 103° suggests that it is the missing link between its source in the Hills cloud and Halley-type comets , thus providing further insight into the evolution of the outer Solar System . The object measures approximately 77 kilometers (48 miles) in diameter. With a semi-major axis of 42 AU Sun .
Officially discovered on 31 May 2008, the discovery was announced on 16 July 2008, by the Canada–France Ecliptic Plane Survey team led by Brett Gladman . The discovery team nicknamed 2008 KV42 "Drac" after Count Dracula .
Discovery and naming
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The discovery of 2008 KV42 was announced on 16 July 2008 by the Canada–France Ecliptic Plane Survey team led by Brett Gladman from the University of British Columbia .[9] Baltimore , Maryland , followed by a Minor Planet Electronic Circular on the same day and an IAU Circular on 18 July. The discovery was made using images obtained on 31 May from the 3.5-meter Canada-France-Hawaii Telescope , followed by further observations until 8 July from the Whipple Observatory and Cerro Tololo .[2] [10]
The discovery team nicknamed 2008 KV42 Drac because of its high inclination in reference to its orbital plane resembling Count Dracula 's ability to walk on walls.[11]
Orbit
[ edit ] Orbits of 2008 KV42 and 2011 KT19
2008 KV42 is the first trans-Neptunian object (TNO) with a retrograde orbit to be discovered. With a semi-major axis of 41.7 AU [4] perihelion at roughly the distance of Uranus .
The object's 103° inclination makes its almost perpendicular to the ecliptic , and is, as of July 2017, one of only six objects known to have inclination and perihelion larger than 60° and 15 AU, respectively. The other six are: 2002 XU93 2007 BP102 2010 WG9 2011 KT19 2014 LM28 [12] [13]
Its unusual orbit suggests that 2008 KV42 may have been perturbed inwards from its source, most likely in the Hills cloud , by an unknown gravitational disturbance. Its discovery may reveal the source regions for Halley-type comets which also have an retrograde orbit, but their origin remains unknown. 2008 KV42 itself is believed to be in an intermediate stage towards becoming a comet, thus helping to further explain the formation and evolution of the outer Solar System .[14] [15] [3]
Planet Nine
[ edit ]
2008 KV42 may even provide evidence of Planet Nine .[16] Kozai effect inside the mean-motion resonances with Planet Nine may cause a periodic exchange between its inclination and its eccentricity. When the elongated perpendicular centaurs get too close to a giant planet , orbits such as that of 2008 KV42 are created.[17]
See also
[ edit ]
References
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^ a b c Gladman, B.; Kavelaars, J.; Petit, J. -M.; Ashby, M. L. N.; Parker, J.; Coffey, J.; et al. (June 2009). "Discovery of the First Retrograde Transneptunian Object" . The Astrophysical Journal . 697 (2 ): L91–L94. Bibcode :2009ApJ...697L..91G . doi :10.1088/0004-637X/697/2/L91 ISSN 0004-637X .
^ a b c d e "JPL Small-Body Database Browser: 528219 (2008 KV42)" (2020-08-12 last obs.). Jet Propulsion Laboratory . Retrieved 30 July 2021 .
^ "Orbit Fit and Astrometric record for 516977" . Southwest Research Institute . Retrieved 31 July 2021 .The Deep Ecliptic Survey Object Classifications
^ a b Johnston, Wm. Robert (18 August 2020). "List of Known Trans-Neptunian Objects" . Johnston's Archive . Retrieved 31 July 2021 .
^ Akimasa Nakamura and bas (2 May 2009). "List of Damocloids (Oort cloud asteroids)" . Lowell Observatory. Retrieved 15 February 2017 .
^ "Asteroid (528219) 2008 KV42 –" . AstDyS-2, Asteroids – Dynamic Site. Retrieved 30 July 2021 .
^ Hecht, Jeff (5 September 2008). "Distant object found orbiting Sun backwards" . newscientist.com . New Scientist . Retrieved 30 July 2021 .
^ "Circular No. 8960" . Central Bureau for Astronomical Telegrams . Retrieved 30 July 2021 .
^ O'Neill, Ian (5 September 2008). "Kuiper Belt Object Travelling the Wrong-Way in a One-Way Solar System" . universetoday.com . Universe Today . Retrieved 30 July 2021 .
^ "MPC list of q>15 and i>60 (HiHq objects)" . IAU Minor Planet Center .2010 TH192 )
^ "JPL Small-Body Database Search Engine: i > 60 (deg) and q > 15 (AU )" . JPL Solar System Dynamics . Retrieved 29 May 2013 .
^ "Discovery of the retrograde trans-neptunian object 2008 KV42 " . cfeps.net . Canada France Ecliptic Plane Survey. 2008. Archived from the original on 30 July 2014.
^ "Announcements – International Team of Astronomers Finds Missing Link" . nrc.cnrc.gc.ca . National Research Council . 4 September 2008. Archived from the original on 25 December 2013.
^ Batygin, Konstantin; Brown, Michael E. (February 2016). "Evidence for a Distant Giant Planet in the Solar System" . The Astronomical Journal 151 (2 ): 22. arXiv :1601.05438 Bibcode :2016AJ....151...22B . doi :10.3847/0004-6256/151/2/22 ISSN 0004-6256 . S2CID 2701020 .
^ Brown, Mike (12 February 2016). "Why I believe in Planet Nine" . www.findplanetnine.com . Archived from the original on 14 February 2016.
External links
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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=(528219)_2008_KV42&oldid=1226388969 " 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 ) ● S c a t t e r e d d i s c a n d d e t a c h e d o b j e c t s ● C e n t a u r s ( s m a l l S o l a r S y s t e m b o d i e s ) ● D a m o c l o i d s ● D i s c o v e r i e s b y t h e M a u n a K e a O b s e r v a t o r i e 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 2 0 0 8 ● M i n o r p l a n e t s w i t h a r e t r o g r a d e o r b i t H i d d e n c a t e g o r i e s : ● U s e d m y d a t e s f r o m J u l y 2 0 2 1 ● 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 3 0 M a y 2 0 2 4 , a t 0 9 : 3 6 ( 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
