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● M a i n p a g e ● C o n t e n t s ● C u r r e n t e v e n t s ● R a n d o m a r t i c l e ● A b o u t W i k i p e d i a ● C o n t a c t u s ● D o n a t e
C o n t r i b u t e
● H e l p ● L e a r n t o e d i t ● C o m m u n i t y p o r t a l ● R e c e n t c h a n g e s ● U p l o a d f i l e
S e a r c h
Search
A p p e a r a n c e
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P e r s o n a l t o o l s
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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 )
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2 N a m i n g
3 P h y s i c a l c h a r a c t e r i s t i c s
T o g g l e P h y s i c a l c h a r a c t e r i s t i c s s u b s e c t i o n
3 . 1 R o t a t i o n a n d s h a p e
3 . 2 D i a m e t e r a n d a l b e d o
4 R e f e r e n c e s
5 E x t e r n a l l i n k s
T o g g l e t h e t a b l e o f c o n t e n t s
4 2 2 2 N a n c i t a
2 4 l a n g u a g e s
● D e u t s c h ● E s p a ñ o l ● E s p e r a n t o ● ف ا ر س ی ● F r a n ç a i s ● Հ ա յ ե ր ե ն ● I t a l i a n o ● Қ а з а қ ш а ● L a t i n a ● M a g y a r ● م ص ر ى ● Н о х ч и й н ● P o l s k i ● P o r t u g u ê s ● R o m â n ă ● S l o v e n č i n a ● С р п с к и / s r p s k i ● S r p s k o h r v a t s k i / с р п с к о х р в а т с к и ● S v e n s k a ● Т а т а р ч а / t a t a r ç a ● У к р а ї н с ь к а ● T i ế n g V i ệ t ● Y o r ù b á ● 中 文
E d i t l i n k s
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E n g l i s h
● R e a d ● E d i t ● V i e w h i s t o r y
T o o l s
T o o l s
A c t i o n s
● R e a d ● E d i t ● V i e w h i s t o r y
G e n e r a l
● W h a t l i n k s h e r e ● R e l a t e d c h a n g e s ● U p l o a d f i l e ● S p e c i a l p a g e s ● P e r m a n e n t l i n k ● P a g e i n f o r m a t i o n ● C i t e t h i s p a g e ● G e t s h o r t e n e d U R L ● D o w n l o a d Q R c o d e ● W i k i d a t a i t e m
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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
4222 Nancita (prov. designation 1988 EK1 ) is a bright background asteroid and upcoming Mars-crosser on an eccentric orbit from the inner regions of the asteroid belt . It was discovered on 13 March 1988, by American astronomer Eleanor Helin at Palomar Observatory in California, United States.[9] S-type asteroid has a rotation period of 3.9 hours and measures approximately 9 kilometers (5.6 miles) in diameter. It was named after the discoverer's daughter-in-law, Nancy Coker Helin.
Orbit and classification [ edit ]
Nancita is a non-family asteroid from the main belt's background population when applying the hierarchical clustering method to its proper orbital elements . It will become a Mars-crossing asteroid in June 2019. It orbits the Sun in the inner main-belt at a distance of 1.7–3.1 AU eccentricity of 0.29 and an inclination of 4° with respect to the ecliptic .[1] 1950 TF4 at McDonald Observatory in 1950. Its observation arc begins at Crimea–Nauchnij in 1968, when it observed as 1968 QL1 , or 20 years prior to its official discovery observation at Palomar.[9]
This minor planet was named in honor of Nancy Coker Helin, daughter-in-law of the discoverer, and wife to Bruce Helin, after whom the minor planet 2430 Bruce Helin had previously been named. Nancy is described by the discoverer as a talented singer, composer and teacher, who has brought music and joy to her family.[2] official naming citation was published by the Minor Planet Center on 2 December 1990 (M.P.C. 17466[10]
Physical characteristics [ edit ]
In the SMASS classification , Nancita is a common S-type asteroid .[1]
Rotation and shape [ edit ]
A rotational lightcurve of Nancita , obtained from photometric observations at the Australian Hunters Hill Observatory (E14 rotation period of 3.8732 hours with a high brightness amplitude of 0.97 in magnitude (U=3 [7]
Diameter and albedo [ edit ]
According to the surveys carried out by the Infrared Astronomical Satellite IRAS , the Japanese Akari satellite, and the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer , Nancita measures between 8.5 and 9.7 kilometers in diameter and its surface has an albedo in the range of 0.21 to 0.27.[3] [4] [5] [6] Collaborative Asteroid Lightcurve Link agrees with the results obtained by IRAS.[8]
References [ edit ]
^ a b Schmadel, Lutz D. (2007). "(4222) Nancita". Dictionary of Minor Planet Names – (4222) Nancita . Springer Berlin Heidelberg . p. 361. doi :10.1007/978-3-540-29925-7_4187 . ISBN 978-3-540-00238-3
^ a b c d Tedesco, E. F.; Noah, P. V.; Noah, M.; Price, S. D. (October 2004). "IRAS Minor Planet Survey V6.0" . NASA Planetary Data System . 12 Bibcode :2004PDSS...12.....T . Retrieved 16 March 2020 .
^ a b c d Usui, Fumihiko; Kuroda, Daisuke; Müller, Thomas G.; Hasegawa, Sunao; Ishiguro, Masateru; Ootsubo, Takafumi; et al. (October 2011). "Asteroid Catalog Using Akari: AKARI/IRC Mid-Infrared Asteroid Survey". Publications of the Astronomical Society of Japan . 63 5 ): 1117–1138. Bibcode :2011PASJ...63.1117U . doi :10.1093/pasj/63.5.1117 . online , AcuA catalog p. 153 )
^ a b c Masiero, Joseph R.; Mainzer, A. K.; Grav, T.; Bauer, J. M.; Cutri, R. M.; Dailey, J.; et al. (November 2011). "Main Belt Asteroids with WISE/NEOWISE. I. Preliminary Albedos and Diameters" . The Astrophysical Journal . 741 (2 ): 20. arXiv :1109.4096 Bibcode :2011ApJ...741...68M . doi :10.1088/0004-637X/741/2/68 . Retrieved 5 December 2016 .
^ a b c d Mainzer, A.; Grav, T.; Masiero, J.; Hand, E.; Bauer, J.; Tholen, D.; et al. (November 2011). "NEOWISE Studies of Spectrophotometrically Classified Asteroids: Preliminary Results" . The Astrophysical Journal . 741 (2 ): 25. arXiv :1109.6407 Bibcode :2011ApJ...741...90M . doi :10.1088/0004-637X/741/2/90 . Retrieved 2 May 2016 .
^ a b Higgins, David; Pravec, Petr; Kusnirak, Peter; Reddy, Vishnu; Dyvig, Ron (September 2006). "Asteroid lightcurve analysis at Hunters Hill Observatory and collaborating stations - summer 2005/6" (PDF) . Minor Planet Bulletin . 33 3 ): 64–66. Bibcode :2006MPBu...33...64H . ISSN 1052-8091 . Archived from the original (PDF) on 19 March 2020. Retrieved 19 March 2020 .
^ a b c "LCDB Data for (4222) Nancita" . Asteroid Lightcurve Database (LCDB). Retrieved 2 May 2016 .
^ a b "4222 Nancita (1988 EK1)" . Minor Planet Center . Retrieved 2 May 2016 .
^ "MPC/MPO/MPS Archive" . Minor Planet Center . Retrieved 2 May 2016 .
External links [ edit ]
R e t r i e v e d f r o m " https://en.wikipedia.org/w/index.php?title=4222_Nancita&oldid=1201891104 " 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 ● D i s c o v e r i e s b y E l e a n o r F . H e l i n ● N a m e d m i n o r p l a n e t s ● S - 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 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 l y 2 0 1 8 ● 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 F e b r u a r y 2 0 2 4 , a t 1 6 : 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
