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● 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
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● C r e a t e a c c o u n t ● L o g i n
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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
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● ا ل ع ر ب ي ة ● A s t u r i a n u ● 閩 南 語 / B â n - l â m - g ú ● B o s a n s k i ● C a t a l à ● D e u t s c h ● Ε λ λ η ν ι κ ά ● E s p a ñ o l ● E s p e r a n t o ● E u s k a r a ● 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 ● L a t i n a ● L ë t z e b u e r g e s c h ● L i e t u v i ų ● M a g y a r ● م ص ر ى ● 日 本 語 ● Н о х ч и й н ● N o r s k b o k m å l ● N o r s k n y n o r s k ● O c c i t a n ● P l a t t d ü ü t s c h ● P o l s k i ● P o r t u g u ê s ● R o m â n ă ● Р у с с к и й ● S l o v e n č i n a ● S l o v e n š č i n a ● С р п с к и / s r p s k i ● S v e n s k a ● T a g a l o g ● Т а т а р ч а / t a t a r ç a ● ไ ท ย ● T ü r k ç e ● 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
● A r t i c l e ● T a l k
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
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● W i k i m e d i a C o m m o n s
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
Barbara (minor planet designation : 234 Barbara ) is a main belt asteroid that was discovered by German-American astronomer Christian Heinrich Friedrich Peters on August 12, 1883, in Clinton, New York . The object is orbiting the Sun with a semimajor axis of AU period of 3.68 years, and an eccentricity of 0.25. The orbital plane is inclined by 15.37° to the plane of the ecliptic . It is classified as a stony S-type asteroid based upon its spectrum. The mean diameter of this object is estimated as 45.6 km.[2] Saint Barbara , patron saint of mathematicians .[3] [4]
Observations of light curves and stellar occultations suggest the surface exhibits large concave areas.[5] Polarimetric study of this asteroid reveals anomalous properties that suggests the regolith consists of a mixture of low and high albedo material. This may have been caused by fragmentation of an asteroid substrate with the spectral properties of CO3/CV3 carbonaceous chondrites .[6] FeO –enriched spinel mineral. Multiple other examples of this class have since been discovered.[7]
Observations made in 2009 with ESO's Very Large Telescope Interferometer (VLTI) suggested that 234 Barbara may be a binary asteroid ,[8] [5]
References
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^ Schmadel, Lutz (5 August 2003). Dictionary of Minor Planet Names ISBN 9783540002383
^ Paluzíe-Borrell, Antonio (11 July 1963). "The Names of the Minor Planets and Their Meanings" . J. Meeus, Kesselberg Sterrenwacht – via Google Books.
^ a b Tanga, P.; et al. (April 2015), "The non-convex shape of (234) Barbara, the first Barbarian*", Monthly Notices of the Royal Astronomical Society , 448 (4 ): 3382–3390, arXiv :1502.00460 Bibcode :2015MNRAS.448.3382T , doi :10.1093/mnras/stv229 .
^ Gil-Hutton, R.; et al. (April 2008), "New cases of unusual polarimetric behavior in asteroids", Astronomy and Astrophysics , 482 (1 ): 309–314, Bibcode :2008A&A...482..309G , doi :10.1051/0004-6361:20078965
^ Devogèle, M.; et al. (April 2018), "New polarimetric and spectroscopic evidence of anomalous enrichment in spinel-bearing calcium-aluminium-rich inclusions among L-type asteroids", Icarus , 304 : 31–57, arXiv :1802.06975 Bibcode :2018Icar..304...31D , doi :10.1016/j.icarus.2017.12.026 , S2CID 54992862
^ "Powerful New Technique to Measure Asteroids' Sizes and Shapes" . European Southern Observatory . Archived from the original on 22 December 2015. Retrieved 19 December 2015 .
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=234_Barbara&oldid=1229653792 " 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 - t y p e a s t e r o i d s ( T h o l e n ) ● L d - t y p e a s t e r o i d s ( S M A S S ) ● 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 C h r i s t i a n P e t e r s ● 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 8 8 3 H i d d e n c a t e g o r i e s : ● A r t i c l e s w i t h s h o r t d e s c r i p t i o n ● S h o r t d e s c r i p t i o n m a t c h e s W i k i d a t a ● U s e d m y d a t e s f r o m O c t o b e r 2 0 1 9 ● 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 8 J u n e 2 0 2 4 , a t 0 0 : 2 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
