1384 Kniertje

Dark Adeonian asteroid October 2019 yes 1384 Kniertje #D6D6D6 H. van Gent Johannesburg Obs. 9 September 1934 (1384) Kniertje 1934 RX Kniertje (fictional character) main-belt(middle)EunomiaAdeona 4 September 2017 (JD 2458000.5) 0 83.06 yr (30,338 days) 3.1649 AU 2.1872 AU 2.6760 AU 0.1827 4.38 yr (1,599 days) 288.15° 0.2251 ms / day 11.858° 152.86° 276.17° 21.52 6.01 km21.72 6.93 km26.14 0.56 km26.29 0.38 km26.517 0.090 km26.59 km (derived)27.51 1.6 km29.592 0.230 km 9.78 0.02 h9.807 0.002 h9.808 0.001 h9.824 0.001 h9.872 0.012 h12.255 0.004 hlightcurve-plot-Warner 0.0351 0.00350.06 0.030.064 0.0060.066 0.0030.07 0.050.0701 (derived)0.3077 0.039 S (assumed, Eunomia)C (assumed; Adeona)23 9.7011.3811.411.5011.6011.6411.81 0.22 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. The asteroid was named after a character in the Dutch play Op Hoop van Zegen by Herman Heijermans. Orbit and classification Kniertje is a member of the Adeona family (505), a large 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), the largest in the intermediate main belt with more than 5,000 stony asteroids.23 The asteroid orbits the Sun in the central asteroid belt at a distance of 2.2–3.2 AU once every 4 years and 5 months (1,599 days). Its orbit has an eccentricity of 0.18 and an inclination of 12° with respect to the ecliptic. The body's observation arc begins with its official discovery observation at Johannesburg in 1934. Physical characteristics Kniertjes 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).23 Rotation period 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). An alternative period solution of 12.255 hours with an amplitude of 0.33 magnitude was found by Brian Warner in March 2006 (U=2).lightcurve-plot-Warner Diameter and albedo 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. 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. Naming This minor planet was named after the principal character in Op Hoop van Zegen, a play by Dutch writer Herman Heijermans (1864–1924). The official naming citation was mentioned in The Names of the Minor Planets by Paul Herget in 1955 (H 125). Notes lightcurve-plot-Warner Lightcurve plot of 1384 Kniertje, Palmer Divide Observatory, Brian D. Warner (2006). Observer's comment: "a period of 9.816 h cannot be formally excluded". Summary figures at LCDB. References 30em 2017-10-01 last obs. JPL Small-Body Database Browser: 1384 Kniertje (1934 RX) https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2001384 Jet Propulsion Laboratory 27 October 2017 Schmadel Lutz D. Dictionary of Minor Planet Names Springer Berlin Heidelberg 112 2007 978-3-540-00238-3 10.1007/978-3-540-29925-7_1385 (1384) Kniertje 1384 Kniertje (1934 RX) Minor Planet Center https://www.minorplanetcenter.net/db_search/show_object?object_id=1384 27 October 2017 Asteroids and comets rotation curves – (1384) Kniertje Behrend Raoul Geneva Observatory http://obswww.unige.ch/~behrend/page4cou.html#001384 27 October 2017 3 August 2003 https://web.archive.org/web/20030803183423/http://obswww.unige.ch/~behrend/page4cou.html#001384 dead 6 Joseph R. Masiero T. Grav A. K. Mainzer C. R. Nugent J. M. Bauer R. Stevenson S. Sonnett August 2014 Main-belt Asteroids with WISE/NEOWISE: Near-infrared Albedos http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2014ApJ...791..121M The Astrophysical Journal 791 2 11 2014ApJ...791..121M 10.1088/0004-637X/791/2/121 1406.6645 27 October 2017 Asteroid 1384 Kniertje – Nesvorny HCM Asteroid Families V3.0 Small Bodies Data Ferret https://sbntools.psi.edu/ferret/SimpleSearch/results.action?targetName=1384+Kniertje#Asteroid%201384%20KniertjeEAR-A-VARGBDET-5-NESVORNYFAM-V3.0 26 October 2019 October 2026 InternetArchiveBot D. Nesvorný M. Broz V. Carruba December 2014 Identification and Dynamical Properties of Asteroid Families Asteroids IV 297–321 2015aste.book..297N 10.2458/azu_uapress_9780816532131-ch016 1502.01628 9780816532131 1384 27 October 2017 6 Joseph R. Masiero A. K. Mainzer T. Grav J. M. Bauer R. M. Cutri C. Nugent M. S. Cabrera November 2012 Preliminary Analysis of WISE/NEOWISE 3-Band Cryogenic and Post-cryogenic Observations of Main Belt Asteroids http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2012ApJ...759L...8M The Astrophysical Journal Letters 759 1 5 2012ApJ...759L...8M 10.1088/2041-8205/759/1/L8 1209.5794 27 October 2017 6 C. R. Nugent A. Mainzer J. Masiero J. Bauer R. M. Cutri T. Grav E. Kramer S. Sonnett R. Stevenson E. L. Wright December 2015 NEOWISE Reactivation Mission Year One: Preliminary Asteroid Diameters and Albedos http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2015ApJ...814..117N The Astrophysical Journal 814 2 13 2015ApJ...814..117N 10.1088/0004-637X/814/2/117 1509.02522 27 October 2017 6 C. R. Nugent A. Mainzer J. Bauer R. M. Cutri E. A. Kramer T. Grav J. Masiero S. Sonnett E. L. Wright September 2016 NEOWISE Reactivation Mission Year Two: Asteroid Diameters and Albedos The Astronomical Journal 152 3 12 2016AJ....152...63N 10.3847/0004-6256/152/3/63 1606.08923 free 6 Fumihiko Usui Daisuke Kuroda Thomas G. Müller Sunao Hasegawa Masateru Ishiguro Takafumi Ootsubo Daisuke Ishihara Hirokazu Kataza Satoshi Takita Shinki Oyabu Munetaka Ueno Hideo Matsuhara Takashi Onaka October 2011 Asteroid Catalog Using Akari: AKARI/IRC Mid-Infrared Asteroid Survey Publications of the Astronomical Society of Japan 63 5 1117–1138 2011PASJ...63.1117U 10.1093/pasj/63.5.1117 free (online, AcuA catalog p. 153) E. F. Tedesco P. V. Noah M. Noah S. D. Price October 2004 IRAS Minor Planet Survey V6.0 https://sbnarchive.psi.edu/pds3/iras/IRAS_A_FPA_3_RDR_IMPS_V6_0/data/diamalb.tab NASA Planetary Data System 12 IRAS-A-FPA-3-RDR-IMPS-V6.0 2004PDSS...12.....T 22 October 2019 6 A. Mainzer T. Grav J. Masiero E. Hand J. Bauer D. Tholen R. S. McMillan T. Spahr R. M. Cutri E. Wright J. Watkins W. Mo C. Maleszewski November 2011 NEOWISE Studies of Spectrophotometrically Classified Asteroids: Preliminary Results The Astrophysical Journal 741 2 25 2011ApJ...741...90M 10.1088/0004-637X/741/2/90 1109.6407 Warner, Brian D. December 2006 Asteroid lightcurve analysis at the Palmer Divide Observatory - March - June 2006 http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2006MPBu...33...85W The Minor Planet Bulletin 33 4 85–88 1052-8091 2006MPBu...33...85W 27 October 2017 Scot Hawkins Richard Ditteon March 2008 Asteroid Lightcurve Analysis at the Oakley Observatory - May 2007 http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2008MPBu...35....1H The Minor Planet Bulletin 35 1 1–4 1052-8091 2008MPBu...35....1H 27 October 2017 Rachel Vinson Robert Moore Richard Ditteon July 2014 Asteroid Lightcurve Analysis at the Oakley Southern Sky Observatory: 2013 October http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2014MPBu...41..169V The Minor Planet Bulletin 41 3 169–170 1052-8091 2014MPBu...41..169V 27 October 2017 Gerard Faure Lawrence Garret December 2007 Suggested Revised H Values of Selected Asteroids: Report Number 3 http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2007MPBu...34...95F The Minor Planet Bulletin 34 4 95–99 1052-8091 2007MPBu...34...95F 27 October 2017 6 Peter Veres Robert Jedicke Alan Fitzsimmons Larry Denneau Mikael Granvik Bryce Bolin Serge Chastel Richard J. Wainscoat William S. Burgett Kenneth C. Chambers Heather Flewelling Nick Kaiser Eugen A. Magnier Jeff S. Morgan Paul A. Price John L. Tonry Christopher Waters November 2015 Absolute magnitudes and slope parameters for 250,000 asteroids observed by Pan-STARRS PS1 - Preliminary results http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2015Icar..261...34V Icarus 261 34–47 2015Icar..261...34V 10.1016/j.icarus.2015.08.007 1506.00762 27 October 2017 External links Asteroid Lightcurve Database (LCDB), query form (info https://web.archive.org/web/20171216050541/http://www.minorplanet.info/lightcurvedatabase.html 16 December 2017 ) Dictionary of Minor Planet Names, Google books Asteroids and comets rotation curves, CdR https://web.archive.org/web/20160729213840/http://obswww.unige.ch/~behrend/page_cou.html 29 July 2016 – Observatoire de Genève, Raoul Behrend Discovery Circumstances: Numbered Minor Planets (1)-(5000) – Minor Planet Center 1384 1383 Limburgia 1384 1385 Gelria 001384 Category:Discoveries by Hendrik van Gent Category:Named minor planets 19340909