1240 Centenaria

Background asteroid December 2018 yes 1240 Centenaria #D6D6D6 R. Schorr Bergedorf Obs. 5 February 1932 (1240) Centenaria 1932 CD1930 VA1930 XGA915 RF s ɛ n t ᵻ ˈ n ɛər i əcentenarian Bergedorf Observatory(100th anniversary) main-belt(outer)background 27 April 2019 (JD 2458600.5) 0 87.85 yr (32,088 d) 3.3686 AU 2.3653 AU 2.8670 AU 0.1750 4.85 yr (1,773 d) 123.27° 0.2030 ms / day 10.169° 323.71° 24.117° 50.28 18.22 km56.87 0.67 km58.85 1.5 km63.035 0.266 km70.946 0.624 km 11.2907 0.0007 h 0.04630.0560.060.06730.072 C (assumed) 9.7010.10 1240 Centenaria, provisional designation 1932 CD, is a background asteroid from the outer regions of the asteroid belt, approximately 60 km mi off 2 us in diameter. It was discovered on 5 February 1932, by astronomer Richard Schorr at the Bergedorf Observatory in Hamburg, Germany. The assumed C-type asteroid has a rotation period of 11.3 hours. It was named for the 100th anniversary of the discovering observatory. Orbit and classification Centenaria is a non-family asteroid from the main belt's background population. It orbits the Sun in the outer asteroid belt at a distance of 2.4–3.4 AU once every 4 years and 10 months (1,773 days; semi-major axis of 2.87 AU). Its orbit has an eccentricity of 0.18 and an inclination of 10° with respect to the ecliptic. The asteroid was first observed as A915 RF at the United States Naval Observatory in September 1915. The body's observation arc begins at Lowell Observatory in December 1930, or 14 months prior to its official discovery observation at Bergedorf. Naming This minor planet was named Centenaria to celebrate the 100th anniversary of the discovering Bergedorf Observatory on 31 October 1933. The official 1240 naming citation was mentioned in The Names of the Minor Planets by Paul Herget in 1955 (H 114). Physical characteristics Centenaria is an assumed carbonaceous C-type asteroid. The asteroid's determined geometric albedo agrees with a characterization into the C-complex (see below). Rotation period In July 2007, a rotational lightcurve of Centenaria was obtained from photometric observations by Julian Oey at the Kingsgrove Observatory E19 in Australia. Lightcurve analysis gave a rotation period of 11.2907 0.0007 hours with a brightness variation of 0.20 magnitude (U=3). The result supersedes previous period determinations of 11.2 hours with and amplitude of 0.12 by Laurent Bernasconi in March 2005 (U=2-), and a period of 14 hours by Mario Di Martino at Pino Torinese in September 1983 (U=1). 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, Centenaria measures between 50 and 71 kilometers in diameter and its surface has an albedo between 0.046 and 0.072. The Collaborative Asteroid Lightcurve Link derives an albedo of 0.0469 and a diameter of 58.61 kilometers based on an absolute magnitude of 10.1. An asteroid occultation from July 2007 measured as cross-section of 58.0 x 58.0 km. References 30em 2018-10-20 last obs. JPL Small-Body Database Browser: 1240 Centenaria (1932 CD) https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2001240 https://web.archive.org/web/20200918005434/https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2001240 dead 18 September 2020 Jet Propulsion Laboratory 15 December 2018 Dictionary of Minor Planet Names – (1240) Centenaria Schmadel Lutz D. Springer Berlin Heidelberg 103 2007 978-3-540-00238-3 10.1007/978-3-540-29925-7_1241 (1240) Centenaria 1240 Centenaria (1932 CD) Minor Planet Center https://www.minorplanetcenter.net/db_search/show_object?object_id=1240 15 December 2018 Asteroids and comets rotation curves – (1240) Centenaria Behrend Raoul Geneva Observatory http://obswww.unige.ch/~behrend/page3cou.html#001240 15 December 2018 23 April 2019 https://web.archive.org/web/20190423121547/http://obswww.unige.ch/~behrend/page3cou.html#001240 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 The Astrophysical Journal 791 2 11 2014ApJ...791..121M 10.1088/0004-637X/791/2/121 1406.6645 119293330 Asteroid (1240) Centenaria – Proper elements AstDyS-2, Asteroids – Dynamic Site https://newton.spacedys.com/astdys/index.php?n=1240&pc=1.1.6 14 December 2018 Asteroid 1240 Centenaria Small Bodies Data Ferret https://sbntools.psi.edu/ferret/SimpleSearch/results.action?targetName=1240+Centenaria 15 December 2018 https://web.archive.org/web/20181215222758/https://sbntools.psi.edu/ferret/SimpleSearch/results.action?targetName=1240+Centenaria 15 December 2018 dead 1240 15 December 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 – IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS-A-FPA-3-RDR-IMPS-V6.0 2004PDSS...12.....T 15 December 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 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 35447010 (catalog) 6 A. K. Mainzer J. M. Bauer R. M. Cutri T. Grav E. A. Kramer J. R. Masiero C. R. Nugent S. M. Sonnett R. A. Stevenson E. L. Wright June 2016 NEOWISE Diameters and Albedos V1.0 https://sbnarchive.psi.edu/pds3/non_mission/EAR_A_COMPIL_5_NEOWISEDIAM_V1_0/data/neowise_mainbelt.tab NASA Planetary Data System EAR-A-COMPIL-5-NEOWISEDIAM-V1.0 2016PDSS..247.....M 15 December 2018 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 The Astrophysical Journal 814 2 13 2015ApJ...814..117N 10.1088/0004-637X/814/2/117 1509.02522 9341381 di Martino, M. December 1984 Physical study of asteroids - Lightcurves and rotational periods of six asteroids Icarus 60 3 541–546.ResearchsupportedbytheConsiglioNazionaledelleRicerche 0019-1035 1984Icar...60..541D 10.1016/0019-1035(84)90162-3 Oey, Julian September 2008 Lightcurve Analysis of Asteroids from the Kingsgrove and Leura Observatories in the 2nd Half of 2007 The Minor Planet Bulletin 35 3 132–135 1052-8091 2008MPBu...35..132O 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 1240 1239 Queteleta 1240 1241 Dysona 001240 Category:Discoveries by Richard Schorr Category:Named minor planets 19320205