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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
115 Thyra is a fairly large and bright inner main-belt asteroid that was discovered by Canadian-American astronomer J. C. Watson on August 6, 1871[5] Thyra , the consort of King Gorm the Old of Denmark . Based upon its spectrum, it is categorized as a stony S-type asteroid .[6]
Observations made between 1978 and 1981 produced a composite light curve with two minima and maxima. However, a subsequent study in 1983 only found a single minima and maxima. A synodical rotation period of 7.241 hours was determined. This was confirmed by observations between 1995 and 2000. The changes in brightness and color indicate a surface with an uneven composition.[7]
The asteroid has a slightly elongated shape, with a ratio of 1.20 between the lengths of the major and minor axes. The orbital longitude and latitude of the asteroid pole in degrees is estimated to be (λ0 , β0 ) = (68°, 23°).[8] thermal inertia of 115 Thyra give a value of around 75 m−2 K −1 s −1/2 , compared to 50 for lunar regolith and 400 for coarse sand in an atmosphere.[3]
References
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^ a b c d Delbo', Marco; Tanga, Paolo (February 2009), "Thermal inertia of main belt asteroids smaller than 100 km from IRAS data", Planetary and Space Science , 57 2 ): 259–265, arXiv :0808.0869 Bibcode :2009P&SS...57..259D , doi :10.1016/j.pss.2008.06.015 , S2CID 14517561 .
^ *JPL Small-Body Database Browser
^ "Numbered Minor Planets 1–5000" , Discovery Circumstances , IAU Minor Planet center, retrieved 7 April 2013 .
^ DeMeo, Francesca E.; et al. (July 2009), "An extension of the Bus asteroid taxonomy into the near-infrared" (PDF) , Icarus , 202 (1 ): 160–180, Bibcode :2009Icar..202..160D , doi :10.1016/j.icarus.2009.02.005 , archived from the original (PDF) on 17 March 2014, retrieved 8 April 2013 .
^ Michałowski, T.; et al. (March 2004), "Photometry and models of selected main belt asteroids I. 52 Europa, 115 Thyra, and 382 Dodona", Astronomy and Astrophysics , 416 : 353–366, Bibcode :2004A&A...416..353M , doi :10.1051/0004-6361:20031706
^ Kryszczyńska, A.; et al. (December 2007), "New findings on asteroid spin-vector distributions", Icarus , 192 (1 ): 223–237, Bibcode :2007Icar..192..223K , doi :10.1016/j.icarus.2007.06.008 .
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=115_Thyra&oldid=1191782670 " 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 J a m e s C r a i g W a t s o 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 ) ● S - t y p e a s t e r o i d s ( T h o l e n ) ● 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 7 1 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 2 5 D e c e m b e r 2 0 2 3 , a t 1 9 : 4 4 ( 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
