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4827 Dares is a larger Jupiter trojan from the Trojan camp , approximately 43 kilometers (27 miles) in diameter. It was discovered on 17 August 1988 by American astronomer Carolyn Shoemaker at the Palomar Observatory in California.[1] D-type asteroid has a rotation period of 19.0 hours.[7] Dares from Greek mythology.[1]
Orbit and classification
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Dares is a dark Jovian asteroid in a 1:1 orbital resonance with Jupiter. It is located in the trailering Trojan camp at the Gas Giant's L 5 Lagrangian point , 60° behind on its orbit (see Trojans in astronomy ) . It is also a non-family asteroid of the Jovian background population .[5] AU semi-major axis of 5.12 AU ). Its orbit has an eccentricity of 0.05 and an inclination of 8° with respect to the ecliptic .[3]
The body's observation arc begins with a precovery at Palomar in November 1954, almost 34 years prior to its official discovery observation.[1]
Physical characteristics
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In the SDSS -based taxonomy, Dares is a dark D-type asteroid .[10] [11] Pan-STARRS ' survey.[7] [9]
Rotation period
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In February 1994, a rotational lightcurve of Dares was obtained over five nights of observation by Stefano Mottola and Anders Erikson using the ESO 1-metre telescope at La Silla Observatory in Chile. Lightcurve analysis showed a well-defined rotation period of ± 0.028magnitude (U=3 [7] [8]
In October 2013, photometric observations in the R-band by astronomers at the Palomar Transient Factory in California gave a concurring period of 18.967 hours with an amplitude of 0.23 magnitude (U=2 [7] [12]
Diameter and albedo
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According to the survey carried out by the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer , Dares measures 42.77 kilometers in diameter and its surface has an albedo of 0.067,[6] Collaborative Asteroid Lightcurve Link assumes a standard albedo for a carbonaceous asteroid of 0.057 and calculates a diameter of 44.22 kilometers based on an absolute magnitude of 10.5.[7]
Naming
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This minor planet was named by the discoverer from Greek mythology after the Trojan Dares , one of Aeneas ' wandering companions (Aeneads ) who were not killed or enslaved by the end of the Trojan War .[1] Minor Planet Center on 25 August 1991 (M.P.C. 18647[13]
References
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^ Noah Webster (1884) A Practical Dictionary of the English Language
^ a b c d "JPL Small-Body Database Browser: 4827 Dares (1988 QE)" (2018-05-22 last obs.). Jet Propulsion Laboratory . Retrieved 21 June 2018 .
^ "List of Jupiter Trojans" . Minor Planet Center . 1 June 2018. Retrieved 21 June 2018 .
^ a b "Asteroid (4827) Dares – Proper Elements" . AstDyS-2, Asteroids – Dynamic Site. Retrieved 21 June 2018 .
^ a b c d Grav, T.; Mainzer, A. K.; Bauer, J. M.; Masiero, J. R.; Nugent, C. R. (November 2012). "WISE/NEOWISE Observations of the Jovian Trojan Population: Taxonomy". The Astrophysical Journal . 759 (1 ): 10. arXiv :1209.1549 Bibcode :2012ApJ...759...49G . doi :10.1088/0004-637X/759/1/49 . S2CID 119101711 . online catalog )
^ a b c d e f g h i "LCDB Data for (4827) Dares" . Asteroid Lightcurve Database (LCDB). Retrieved 21 June 2018 .
^ a b Mottola, Stefano; Di Martino, Mario; Erikson, Anders; Gonano-Beurer, Maria; Carbognani, Albino; Carsenty, Uri; et al. (May 2011). "Rotational Properties of Jupiter Trojans. I. Light Curves of 80 Objects" . The Astronomical Journal . 141 (5 ): 32. Bibcode :2011AJ....141..170M . doi :10.1088/0004-6256/141/5/170
^ a b c Veres, Peter; Jedicke, Robert; Fitzsimmons, Alan; Denneau, Larry; Granvik, Mikael; Bolin, Bryce; et al. (November 2015). "Absolute magnitudes and slope parameters for 250,000 asteroids observed by Pan-STARRS PS1 - Preliminary results". Icarus . 261 : 34–47. arXiv :1506.00762 Bibcode :2015Icar..261...34V . doi :10.1016/j.icarus.2015.08.007 . S2CID 53493339 .
^ a b Carvano, J. M.; Hasselmann, P. H.; Lazzaro, D.; Mothé-Diniz, T. (February 2010). "SDSS-based taxonomic classification and orbital distribution of main belt asteroids" . Astronomy and Astrophysics . 510 : 12. Bibcode :2010A&A...510A..43C . doi :10.1051/0004-6361/200913322 . Retrieved 30 October 2019 . (PDS data set)
^ a b "Asteroid 4827 Dares" . Small Bodies Data Ferret . Retrieved 21 June 2018 .
^ Waszczak, Adam; Chang, Chan-Kao; Ofek, Eran O.; Laher, Russ; Masci, Frank; Levitan, David; et al. (September 2015). "Asteroid Light Curves from the Palomar Transient Factory Survey: Rotation Periods and Phase Functions from Sparse Photometry". The Astronomical Journal . 150 (3 ): 35. arXiv :1504.04041 Bibcode :2015AJ....150...75W . doi :10.1088/0004-6256/150/3/75 . S2CID 8342929 .
^ "MPC/MPO/MPS Archive" . Minor Planet Center . Retrieved 21 June 2018 .
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=4827_Dares&oldid=1191443427 " 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 ) ● J u p i t e r t r o j a n s ( T r o j a n c a m p ) ● D i s c o v e r i e s b y C a r o l y n S . S h o e m a k e r ● N a m e d m i n o r p l a n e t 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 8 8 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 n e 2 0 1 8 ● W e b a r c h i v e t e m p l a t e w a y b a c k l i n k s ● 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 2 3 D e c e m b e r 2 0 2 3 , a t 1 5 : 5 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
