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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
1746 Brouwer (prov. designation 1963 RF ) is a Hilda asteroid from the outermost region of the asteroid belt , approximately 64 kilometers in diameter. It was discovered on 14 September 1963, by IU Indiana Asteroid Program at Goethe Link Observatory near Brooklyn, Indiana, United States.[10] Dirk Brouwer .[2]
Classification and orbit [ edit ]
Brouwer is a member of the Hilda family , a large group that orbits in resonance with the gas giant Jupiter and are thought to originate from the Kuiper belt . Brouwer orbits the Sun at a distance of 3.1–4.8 AU eccentricity of 0.21 and an inclination of 8° with respect to the ecliptic .[1]
It was first identified as 1940 WE at Turku Observatory in 1940, extending the body's observation arc by 23 years prior to its official discovery observation.[10]
Physical characteristics [ edit ]
In the Tholen classification , Brouwer is characterized as a dark and reddish D-type asteroid .[1]
Rotation period [ edit ]
Several rotational lightcurves of Brouwer gave a rotation period between 19.72 and 19.88 hours with a brightness variation of 0.21 and 0.35 magnitude (U=n.a/2/n.a. [7] [8] [a]
Diameter and albedo [ edit ]
According to the surveys carried out by the Infrared Astronomical Satellite IRAS , the Japanese Akari satellite, and NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, Brouwer measures between 61.50 and 64.25 kilometers in diameter, and its surface has an albedo between 0.045 and 0.051.[4] [5] [6]
The Collaborative Asteroid Lightcurve Link agrees with IRAS, that is an albedo of 0.045 and a diameter of 64.25 kilometers with an absolute magnitude of 9.95.[3]
This minor planet was named in honor of Dutch–American astronomer Dirk Brouwer (1902–1966). Originally at Leiden University and specialized in celestial mechanics , he became director of the Yale University Observatory and was the president of IAU 's commission 20, Positions & Motions of Minor Planets, Comets & Satellites , from 1948 to 1955.[2] naming citation was published by the Minor Planet Center on 15 July 1968 (M.P.C. 2883[11]
References [ edit ]
^ a b c Schmadel, Lutz D. (2007). "(1746) Brouwer". Dictionary of Minor Planet Names . Springer Berlin Heidelberg . p. 139. doi :10.1007/978-3-540-29925-7_1747 . ISBN 978-3-540-00238-3
^ a b c d e f "LCDB Data for (1746) Brouwer" . Asteroid Lightcurve Database (LCDB). Retrieved 20 December 2016 .
^ 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 d Grav, T.; Mainzer, A. K.; Bauer, J.; Masiero, J.; Spahr, T.; McMillan, R. S.; et al. (January 2012). "WISE/NEOWISE Observations of the Hilda Population: Preliminary Results" . The Astrophysical Journal . 744 (2 ): 15. arXiv :1110.0283 Bibcode :2012ApJ...744..197G . doi :10.1088/0004-637X/744/2/197 . S2CID 44000310 . Retrieved 20 December 2016 .
^ 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 – IRAS-A-FPA-3-RDR-IMPS-V6.0 . Bibcode :2004PDSS...12.....T . Retrieved 17 October 2019 .
^ a b Hanus, J.; Durech, J.; Oszkiewicz, D. A.; Behrend, R.; Carry, B.; Delbo, M.; et al. (February 2016). "New and updated convex shape models of asteroids based on optical data from a large collaboration network" . Astronomy and Astrophysics . 586 : 24. arXiv :1510.07422 Bibcode :2016A&A...586A.108H . doi :10.1051/0004-6361/201527441 . S2CID 119112278 . Retrieved 20 December 2016 .
^ a b Dahlgren, M.; Lahulla, J. F.; Lagerkvist, C.-I.; Lagerros, J.; Mottola, S.; Erikson, A.; et al. (June 1998). "A Study of Hilda Asteroids. V. Lightcurves of 47 Hilda Asteroids" . Icarus . 133 (2 ): 247–285. Bibcode :1998Icar..133..247D . doi :10.1006/icar.1998.5919 . Retrieved 20 December 2016 .
^ Veres, Peter; Jedicke, Robert; Fitzsimmons, Alan; Denneau, Larry; Granvik, Mikael; Bolin, Bryce; et al. (November 2015). "Absolute magnitudes and slope parameters for 250,000 asteroids observed by Pan-STARRS PS1 - Preliminary results" . Icarus . 261 : 34–47. arXiv :1506.00762 Bibcode :2015Icar..261...34V . doi :10.1016/j.icarus.2015.08.007 . S2CID 53493339 . Retrieved 20 December 2016 .
^ a b "1746 Brouwer (1963 RF)" . Minor Planet Center . Retrieved 20 December 2016 .
^ Schmadel, Lutz D. (2009). "Appendix – Publication Dates of the MPCs". Dictionary of Minor Planet Names – Addendum to Fifth Edition (2006–2008) . Springer Berlin Heidelberg. p. 221. Bibcode :2009dmpn.book.....S . doi :10.1007/978-3-642-01965-4 . ISBN 978-3-642-01964-7
External links [ edit ]
R e t r i e v e d f r o m " https://en.wikipedia.org/w/index.php?title=1746_Brouwer&oldid=1195682850 " 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 ) ● H i l d a a s t e r o i d s ● D i s c o v e r i e s b y I n d i a n a U n i v e r s i t y ( I n d i a n a A s t e r o i d P r o g r a m ) ● N a m e d m i n o r p l a n e t s ● D - 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 9 6 3 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 O c t o b e r 2 0 1 9 ● 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 4 J a n u a r y 2 0 2 4 , a t 2 1 : 4 0 ( 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
