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4585 Ainonai (prov. designation :1990 KQ ) is a dark Chloris asteroid , approximately 11 kilometers (6.8 miles) in diameter, located in the central region of the asteroid belt . It was discovered on 16 May 1990, by Japanese amateur astronomers Kin Endate and Kazuro Watanabe at the Kitami Observatory in eastern Hokkaidō, Japan.[1] C-type asteroid has a longer than average rotation period of 38.3 hours. It was named for the Japanese town of Ainonai, located near the discovering observatory.[2]
Orbit and classification [ edit ]
When applying the hierarchical clustering method to its proper orbital elements , Ainonai is a core member of the Chloris family (509 [4] [5] [6] family of carbonaceous main-belt asteroids, named after its parent body 410 Chloris .[10] central asteroid belt at a distance of 2.1–3.4 AU semi-major axis of 2.74 AU ). Its orbit has an eccentricity of 0.24 and an inclination of 11° with respect to the ecliptic .[3] observation arc begins with its first observation as 1972 LU at Crimea–Nauchnij on 9 June 1972, or 18 years prior to its official discovery observation at Kitami.[1]
This minor planet was named after Ainonai, a small Japanese town located near Kitami in eastern Hokkaidō . Asteroids 3785 Kitami and 3720 Hokkaido are named after these two places.[2] official naming citation was published by the Minor Planet Center on 21 November 1991 (M.P.C. 19338[11]
Physical characteristics [ edit ]
Ainonai is an assumed carbonaceous C-type asteroid .[9] spectral type of the Chloris family .[10] : 23
Lightcurve [ edit ]
In June 2008, a rotational lightcurve of Ainonai was obtained from photometric observations by James W. Brinsfield at the Via Capote Observatory (G69 rotation period of (± 0.05± 0.02magnitude (U=3– [8]
Diameter and albedo [ edit ]
According to observations from the NEOWISE mission of NASA's space-based Wide-field Infrared Survey Explorer , Ainonai measures (± 0.122albedo of (± 0.011[7] Collaborative Asteroid Lightcurve Link assumes a standard albedo for a carbonaceous asteroid of 0.057 and calculates a diameter of 14.64 kilometers based on an absolute magnitude of 12.9.[9]
References [ edit ]
^ a b c Schmadel, Lutz D. (2007). "(4585) Ainonai". Dictionary of Minor Planet Names . Springer Berlin Heidelberg. p. 395. doi :10.1007/978-3-540-29925-7_4515 . ISBN 978-3-540-00238-3
^ a b c d "JPL Small-Body Database Browser: 4585 Ainonai (1990 KQ)" (2020-04-24 last obs.). Jet Propulsion Laboratory . Retrieved 11 June 2020 .
^ a b "Asteroid 4585 Ainonai – Proper Elements" . AstDyS-2, Asteroids – Dynamic Site. Retrieved 11 June 2020 .
^ a b "Asteroid 4585 Ainonai – Nesvorny HCM Asteroid Families V3.0" . Small Bodies Data Ferret . Retrieved 11 June 2020 .
^ a b Zappalà, V.; Bendjoya, Ph.; Cellino, A.; Farinella, P.; Froeschle, C. (1997). "Asteroid Dynamical Families" . NASA Planetary Data System : EAR-A-5-DDR-FAMILY-V4.1. Retrieved 11 June 2020 . PDS main page )
^ a b c d Mainzer, A. K.; Bauer, J. M.; Cutri, R. M.; Grav, T.; Kramer, E. A.; Masiero, J. R.; et al. (June 2016). "NEOWISE Diameters and Albedos V1.0" . NASA Planetary Data System . Bibcode :2016PDSS..247.....M . Retrieved 11 June 2020 .
^ a b Brinsfield, James W. (October 2008). "Asteroid Lightcurve Analysis at the Via Capote Observatory: 2nd Quarter 2008" (PDF) . Minor Planet Bulletin . 35 4 ): 179–181. Bibcode :2008MPBu...35..179B . ISSN 1052-8091 . Archived from the original (PDF) on 17 March 2020. Retrieved 11 June 2020 .
^ a b c "LCDB Data for (4585) Ainonai" . Asteroid Lightcurve Database (LCDB). Retrieved 11 June 2020 .
^ a b c Nesvorný, D.; Broz, M.; Carruba, V. (December 2014). "Identification and Dynamical Properties of Asteroid Families". Asteroids IV . pp. 297–321. arXiv :1502.01628 Bibcode :2015aste.book..297N . doi :10.2458/azu_uapress_9780816532131-ch016 . ISBN 9780816532131 S2CID 119280014 .
^ "MPC/MPO/MPS Archive" . Minor Planet Center . Retrieved 11 June 2020 .
External links [ edit ]
R e t r i e v e d f r o m " https://en.wikipedia.org/w/index.php?title=4585_Ainonai&oldid=1190798567 " 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 ) ● C h l o r i s a s t e r o i d s ● D i s c o v e r i e s b y K i n E n d a t e ● D i s c o v e r i e s b y K a z u r o W a t a n a b e ● 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 9 0 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 2 0 ● 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 1 9 D e c e m b e r 2 0 2 3 , a t 2 2 : 4 7 ( 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
