1029 La Plata

Main-belt asteroid March 2018 yes 1029 La Plata #D6D6D6 001029-asteroid shape model (1029) La Plata.png Shape model of La Plata from its lightcurve J. F. Hartmann La Plata Obs. 28 April 1924 (1029) La Plata 1924 RK1938 DR 21969 OUA916 ULA916 UR La Plata (city in Argentinaand discovering observatory) main-belt(outer)Koronis 23 March 2018 (JD 2458200.5) 0 100.68 yr (36,772 d) 2.9715 AU 2.8083 AU 2.8899 AU 0.0282 4.91 yr (1,794 d) 87.729° 0.2006 ms / day 2.4254° 29.903° 142.56° 16.46 1.07 km19.32 2.72 km20.71 km (derived)20.78 1.9 km 14 h14.174 0.003 h15.310 0.003 h15.37 h 0.1655 (derived)0.1819 0.0390.229 0.2460.310 0.045 Tholen SSB–V 0.787U–B 0.390 10.7910.8810.9911.01 0.0111.37 0.60 1029 La Plata, provisional designation 1924 RK, is a stony Koronis asteroid from the outer regions of the asteroid belt, approximately 20 km mi off 2 us in diameter. It was discovered on 28 April 1924, by German astronomer Johannes Hartmann at the La Plata Astronomical Observatory in Argentina. It was named after the city of La Plata, Argentina, where the discovering observatory is located. The possibly elongated S-type asteroid has a rotation period of 15.31 hours. Orbit and classification La Plata is a member of the Koronis family (605), a prominent asteroid family with nearly co-planar ecliptical orbits and one of the largest families in the main belt at all. It orbits the Sun in the outer asteroid belt at a distance of 2.8–3.0 AU once every 4 years and 11 months (1,794 days; semi-major axis of 2.89 AU), which is near the 5:2 resonance with Jupiter (2.82 AU). Its orbit has an eccentricity of 0.03 and an inclination of 2° with respect to the ecliptic. The asteroid was first observed as A916 UL and A916 UR at the observatories at Simeiz and Algiers in October 1916, respectively. Its observation arc begins with the latter observation at Algiers on 31 October 1916, more than 7 years prior its official discovery observation at La Plata. Physical characteristics In the Tholen classification, La Plata is a common, stony S-type asteroid, which agrees with the overall spectral type for Koronian asteroids.23 The photometric survey conducted by Pan-STARRS also characterized it as an S-type. Rotation period In October 2004, a rotational lightcurve of La Plata was obtained from photometric observations during an extensive survey of Koronian asteroids at seven different observatories in the United States. Lightcurve analysis gave a well-defined rotation period of 15.310 hours with a brightness variation of 0.58 magnitude (U=3). Previous measurements from 1975 and 1983 showed a period of 14 and 15.37 hours, respectively (U=2/2). Also in October 2004, an alternative period of 14.174 hours was obtained by French amateur astronomer Laurent Bernasconi (U=2). The consolidated brightness amplitude of 0.26 to 0.58 magnitude indicates that the body's shape is somewhat elongated. 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, La Plata measures between 16.46 and 20.78 kilometers in diameter and its surface has an albedo between 0.1819 and 0.310. The Collaborative Asteroid Lightcurve Link derives an albedo of 0.1655 and a diameter of 20.71 kilometers based on an absolute magnitude of 10.99. Naming This minor planet was named after the city of La Plata, Argentina, where the discovering La Plata Astronomical Observatory is located. The official naming citation was mentioned in The Names of the Minor Planets by Paul Herget in 1955 (H 98). References 30em 2017-07-05 last obs. JPL Small-Body Database Browser: 1029 La Plata (1924 RK) https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2001029 Jet Propulsion Laboratory 19 March 2018 Schmadel Lutz D. Dictionary of Minor Planet Names Springer Berlin Heidelberg 88 2007 978-3-540-00238-3 10.1007/978-3-540-29925-7_1030 (1029) la Plata 1029 La Plata (1924 RK) Minor Planet Center https://www.minorplanetcenter.net/db_search/show_object?object_id=1029 19 March 2018 Asteroids and comets rotation curves – (1029) La Plata Behrend Raoul Geneva Observatory http://obswww.unige.ch/~behrend/page3cou.html#001029 19 March 2018 3 December 2002 https://web.archive.org/web/20021203214643/http://obswww.unige.ch/~behrend/page3cou.html#001029 dead Asteroid 1029 La Plata – Nesvorny HCM Asteroid Families V3.0 Small Bodies Data Ferret https://sbntools.psi.edu/ferret/SimpleSearch/results.action?targetName=1029+La+Plata 24 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 1029 19 March 2018 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 (online, AcuA catalog p. 153) 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 19 March 2018 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 Binzel, R. P. October 1987 A photoelectric survey of 130 asteroids http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=1987Icar...72..135B Icarus 72 1 135–208 0019-1035 1987Icar...72..135B 10.1016/0019-1035(87)90125-4 19 March 2018 Lagerkvist, C.-I. March 1978 Photographic photometry of 110 main-belt asteroids http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=1978A&AS...31..361L Astronomy and Astrophysics Supplement Series 31 361–381 1978A&AS...31..361L 19 March 2018 6 Stephen M. Slivan Richard P. Binzel Shaida C. Boroumand Margaret W. Pan Christine M. Simpson James T. Tanabe Rosalinda M. Villastrigo Lesley L. Yen Richard P. Ditteon Donald P. Pray Robert D. Stephens May 2008 Rotation rates in the Koronis family, complete to H≈11.2 http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2008Icar..195..226S Icarus 195 1 226–276 2008Icar..195..226S 10.1016/j.icarus.2007.11.019 19 March 2018 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 19 March 2018 External links Lightcurve Database Query (LCDB), at www.minorplanet.info 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 – Geneva Observatory, Raoul Behrend Discovery Circumstances: Numbered Minor Planets (1)-(5000) – Minor Planet Center 1029 1028 Lydina 1029 1030 Vitja 001029 Category:Discoveries by Johannes Franz Hartmann Category:Named minor planets 001029 19240428