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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
1384 Kniertje , provisional designation 1934 RX , is a dark Adeonian asteroid from the central regions of the asteroid belt , approximately 26 kilometers in diameter. It was discovered on 9 September 1934, by Dutch astronomer Hendrik van Gent at the Union Observatory in Johannesburg, South Africa.[19] Op Hoop van Zegen by Herman Heijermans .[2]
Orbit and classification [ edit ]
Kniertje is a member of the Adeona family (505 [4] family of carbonaceous asteroids in the central main belt, named after 145 Adeona . It is also dynamically classified as a member of the Eunomia family (502 [3] [16] : 23
The asteroid orbits the Sun in the central asteroid belt at a distance of 2.2–3.2 AU eccentricity of 0.18 and an inclination of 12° with respect to the ecliptic .[1] observation arc begins with its official discovery observation at Johannesburg in 1934.[19]
Physical characteristics [ edit ]
Kniertje ' s spectral type is unknown. Although the LCDB assumes an S-type (due to its dynamical classification to the stony Eunomia family), a low albedo of 0.0701 is derived (see below) which is typical for carbonaceous C-type asteroids and in agreement with the overall spectral type of the Adeona family (505 [3] [16] : 23
Rotation period [ edit ]
Several rotational lightcurves of Kniertje have been obtained from photometric observations since 2003. Lightcurve analysis gave a rotation period between 9.78 and 9.872 hours with a brightness variation between 0.15 and 0.32 magnitude (U=2/2/2/2/2 [12] [13] [14] Brian Warner in March 2006 (U=2 [15] [a]
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 , Kniertje measures between 21.52 and 29.592 kilometers in diameter and its surface has an albedo between 0.0351 and 0.3077.[5] [6] [7] [8] [9] [10] [11]
The Collaborative Asteroid Lightcurve Link derives an albedo of 0.0701 and a diameter of 26.59 kilometers based on an absolute magnitude of 11.38.[3]
This minor planet was named after the principal character in Op Hoop van Zegen Herman Heijermans (1864–1924). The official naming citation was mentioned in The Names of the Minor Planets by Paul Herget in 1955 (H 125 [2]
References [ edit ]
^ a b c Schmadel, Lutz D. (2007). "(1384) Kniertje". Dictionary of Minor Planet Names . Springer Berlin Heidelberg . p. 112. doi :10.1007/978-3-540-29925-7_1385 . ISBN 978-3-540-00238-3
^ a b c d e f g h "LCDB Data for (1384) Kniertje" . Asteroid Lightcurve Database (LCDB). Retrieved 27 October 2017 .
^ a b "Asteroid 1384 Kniertje – Nesvorny HCM Asteroid Families V3.0" . Small Bodies Data Ferret . Retrieved 26 October 2019 .
^ a b c d Nugent, C. R.; Mainzer, A.; Bauer, J.; Cutri, R. M.; Kramer, E. A.; Grav, T.; et al. (September 2016). "NEOWISE Reactivation Mission Year Two: Asteroid Diameters and Albedos" . The Astronomical Journal . 152 (3 ): 12. arXiv :1606.08923 Bibcode :2016AJ....152...63N . doi :10.3847/0004-6256/152/3/63
^ a b c d Nugent, C. R.; Mainzer, A.; Masiero, J.; Bauer, J.; Cutri, R. M.; Grav, T.; et al. (December 2015). "NEOWISE Reactivation Mission Year One: Preliminary Asteroid Diameters and Albedos" . The Astrophysical Journal . 814 (2 ): 13. arXiv :1509.02522 Bibcode :2015ApJ...814..117N . doi :10.1088/0004-637X/814/2/117 . Retrieved 27 October 2017 .
^ 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 Masiero, Joseph R.; Mainzer, A. K.; Grav, T.; Bauer, J. M.; Cutri, R. M.; Nugent, C.; et al. (November 2012). "Preliminary Analysis of WISE/NEOWISE 3-Band Cryogenic and Post-cryogenic Observations of Main Belt Asteroids" . The Astrophysical Journal Letters . 759 (1 ): 5. arXiv :1209.5794 Bibcode :2012ApJ...759L...8M . doi :10.1088/2041-8205/759/1/L8 . Retrieved 27 October 2017 .
^ a b Masiero, Joseph R.; Grav, T.; Mainzer, A. K.; Nugent, C. R.; Bauer, J. M.; Stevenson, R.; et al. (August 2014). "Main-belt Asteroids with WISE/NEOWISE: Near-infrared Albedos" . The Astrophysical Journal . 791 (2 ): 11. arXiv :1406.6645 Bibcode :2014ApJ...791..121M . doi :10.1088/0004-637X/791/2/121 . Retrieved 27 October 2017 .
^ 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 22 October 2019 .
^ 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 .
^ a b c d Behrend, Raoul. "Asteroids and comets rotation curves – (1384) Kniertje" . Geneva Observatory . Retrieved 27 October 2017 .
^ a b Hawkins, Scot; Ditteon, Richard (March 2008). "Asteroid Lightcurve Analysis at the Oakley Observatory - May 2007" . The Minor Planet Bulletin . 35 1 ): 1–4. Bibcode :2008MPBu...35....1H . ISSN 1052-8091 . Retrieved 27 October 2017 .
^ a b Vinson, Rachel; Moore, Robert; Ditteon, Richard (July 2014). "Asteroid Lightcurve Analysis at the Oakley Southern Sky Observatory: 2013 October" . The Minor Planet Bulletin . 41 3 ): 169–170. Bibcode :2014MPBu...41..169V . ISSN 1052-8091 . Retrieved 27 October 2017 .
^ a b Warner, Brian D. (December 2006). "Asteroid lightcurve analysis at the Palmer Divide Observatory - March - June 2006" . The Minor Planet Bulletin . 33 4 ): 85–88. Bibcode :2006MPBu...33...85W . ISSN 1052-8091 . Retrieved 27 October 2017 .
^ a b c Nesvorný, D.; Broz, M.; Carruba, V. (December 2014). "Identification and Dynamical Properties of Asteroid Families". Asteroids IV . pp. 297–321. arXiv :1502.01628 Bibcode :2015aste.book..297N . doi :10.2458/azu_uapress_9780816532131-ch016 . ISBN 9780816532131
^ Faure, Gerard; Garret, Lawrence (December 2007). "Suggested Revised H Values of Selected Asteroids: Report Number 3" . The Minor Planet Bulletin . 34 4 ): 95–99. Bibcode :2007MPBu...34...95F . ISSN 1052-8091 . Retrieved 27 October 2017 .
^ 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 . Retrieved 27 October 2017 .
^ a b "1384 Kniertje (1934 RX)" . Minor Planet Center . Retrieved 27 October 2017 .
External links [ edit ]
R e t r i e v e d f r o m " https://en.wikipedia.org/w/index.php?title=1384_Kniertje&oldid=1191753951 " 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 ) ● A d e o n a a s t e r o i d s ● D i s c o v e r i e s b y H e n d r i k v a n G e n t ● 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 9 3 4 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 2 5 D e c e m b e r 2 0 2 3 , a t 1 5 : 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
