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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
970 Primula (prov. designation :A921 WK or 1921 LB ) is a stony background asteroid from the central regions of the asteroid belt , approximately 9.2 kilometers (5.7 miles) in diameter. It was discovered on 29 November 1921, by astronomer Karl Reinmuth at the Heidelberg Observatory in southern Germany.[1] S-type asteroid has a short rotation period of 2.8 hours. It was named after the genus of flowering plants, Primula [3]
Orbit and classification
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Primula is a non-family asteroid of the main belt's background population when applying the hierarchical clustering method to its proper orbital elements .[5] [6] central asteroid belt at a distance of 1.9–3.3 AU semi-major axis of 2.56 AU ). Its orbit has an eccentricity of 0.27 and an inclination of 5° with respect to the ecliptic .[4] observation arc begins with its official discovery observation at Heidelberg observatory in November 1921.[1]
Naming
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This minor planet was named after the genus of flowering plants, Primula Primulaceae (primrose family) and have large tufted basal leaves and variously colored flowers. The naming was mentioned in The Names of the Minor Planets by Paul Herget in 1955 (H 93 [3]
Physical characteristics
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In the SMASS classification (Bus–Binzel 2000), Primula is a common stony S-type asteroid .[4]
Rotation period
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In November 2003, a rotational lightcurve of Primula was obtained from photometric observations by Pedro Sada , Eder Canizales and Edgar Armada using a remotely controlled commercial telescope at Tenagra Observatories (848 rotation period of ± 0.001± 0.02magnitude (U=3 [8] ± 0.0001± 0.02U=3 [9]
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 , Primula measures ± 0.289albedo of ± 0.031[7] Collaborative Asteroid Lightcurve Link assumes a standard albedo for a stony asteroid of 0.20 and calculates a diameter of 10.30 kilometers based on an absolute magnitude of 12.3.[10]
References
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^ "primula" Oxford English Dictionary Oxford University Press .(Subscription or participating institution membership required.)
^ a b c Schmadel, Lutz D. (2007). "(970) Primula". Dictionary of Minor Planet Names . Springer Berlin Heidelberg. p. 85. doi :10.1007/978-3-540-29925-7_971 . ISBN 978-3-540-00238-3
^ a b c d e f "JPL Small-Body Database Browser: 970 Primula (A921 WK)" (2020-01-08 last obs.). Jet Propulsion Laboratory . Retrieved 10 February 2020 .
^ a b "Asteroid 970 Primula – Proper Elements" . AstDyS-2, Asteroids – Dynamic Site. Retrieved 10 February 2020 .
^ a b c "Asteroid 970 Primula" . Small Bodies Data Ferret . Retrieved 10 February 2020 .
^ 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 10 February 2020 .
^ a b Sada, Pedro V.; Canizales, Eder D.; Armada, Edgar M. (September 2004). "CCD photometry of asteroids 970 Primula and 1631 Kopff using a remote commercial telescope" (PDF) . Minor Planet Bulletin . 31 3 ): 49–50. Bibcode :2004MPBu...31...49S . ISSN 1052-8091 .
^ a b Clark, Maurice (April 2012). "Asteroid Lightcurves from the Preston Gott Observatory" (PDF) . Minor Planet Bulletin . 39 2 ): 63–65. Bibcode :2012MPBu...39...63C . ISSN 1052-8091 . Archived from the original (PDF) on 12 February 2020. Retrieved 23 February 2020 .
^ "LCDB Data for (970) Primula" . Asteroid Lightcurve Database (LCDB). Retrieved 10 February 2020 .
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=970_Primula&oldid=1190799516 " 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 K a r l W i l h e l m R e i n m u t h ● 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 2 1 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 F e b r u a r y 2 0 2 0 ● 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 : 5 5 ( 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
