1368 Numidia

Asteroid October 2019 yes 1368 Numidia #D6D6D6 001368-asteroid shape model (1368) Numidia.png Modelled shape of Numidia from its lightcurve C. Jackson Johannesburg Obs. 30 April 1935 (1368) Numidia 1935 HD1928 SN1931 JF1935 KB1936 QN1953 YK nj uː ' m I d i @Numidian Numidia(ancient Berber kingdom) main-belt(inner)backgroundMaria 4 September 2017 (JD 2458000.5) 0 86.45 yr (31,577 days) 2.6814 AU 2.3673 AU 2.5243 AU 0.0622 4.01 yr (1,465 days) 146.05° 0.2457 ms / day 14.823° 18.130° 264.36° 15.93 0.37 km19.24 km (derived)19.29 0.9 km19.591 0.213 km19.899 0.110 km20.66 0.82 km 3.64 h3.640739 h3.640740 h 0.177 0.0160.1838 0.02950.1918 (derived)0.2035 0.0190.298 0.021 S (assumed)B–V 0.860U–B 0.360 10.9210.99 1368 Numidia, provisional designation 1935 HD, is a stony background asteroid from the central regions of the asteroid belt, approximately 19 kilometers in diameter. It was discovered on 30 April 1935, by South African astronomer Cyril Jackson at the Union Observatory in Johannesburg. The asteroid was named after the ancient North African kingdom of Numidia. Orbit and classification Based on the hierarchical clustering method, Numidia has both been classified as a non-family asteroid from the main belt's background population (Nesvorný), and as a core member of the Maria family (Milani and Knežević). It orbits the Sun in the intermediate asteroid belt at a distance of 2.4–2.7 AU once every 4.01 years (1,465 days; semi-major axis of 2.52 AU). Its orbit has an eccentricity of 0.06 and an inclination of 15° with respect to the ecliptic. The asteroid was first identified as 1928 SN at Uccle Observatory in September 1928. The body's observation arc begins at Johannesburg in May 1931, three weeks after its official discovery observation. Naming This minor planet was named after the ancient Berber kingdom of Numidia, that was located in North Africa, in what is now Algeria. The official naming citation was mentioned in The Names of the Minor Planets by Paul Herget in 1955 (H 124). Physical characteristics Numidia is an assumed stony S-type asteroid. Rotation period and poles In May 1983, a first rotational lightcurve of Numidia was obtained from photometric observations by American astronomer Richard Binzel. Lightcurve analysis gave a well-defined rotation period of 3.64 hours with a brightness amplitude of 0.35 magnitude (U=3). Modeling of the asteroid's lightcurve gave a concurring sidereal period of 3.640739 and 3.640740 hours, respectively. In 2016, modeling also determined a pole of (201.0°, −62.0°) in ecliptic coordinates (λ, β). 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, Numidia measures between 15.93 and 20.66 kilometers in diameter and its surface has an albedo between 0.177 and 0.298. The Collaborative Asteroid Lightcurve Link derives an albedo of 0.1918 and a diameter of 19.24 kilometers based on an absolute magnitude of 10.99. References 30em 2017-11-01 last obs. JPL Small-Body Database Browser: 1368 Numidia (1935 HD) https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2001368 Jet Propulsion Laboratory 9 November 2017 Dictionary of Minor Planet Names – (1368) Numidia Schmadel Lutz D. Springer Berlin Heidelberg 111 2007 978-3-540-00238-3 10.1007/978-3-540-29925-7_1369 (1368) Numidia 1368 Numidia (1935 HD) Minor Planet Center https://www.minorplanetcenter.net/db_search/show_object?object_id=1368 9 November 2017 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 9 November 2017 Small Bodies Data Ferret Nesvorny HCM Asteroid Families V3.0 https://sbntools.psi.edu/ferret/PropertySearch/familyForm.action 9 November 2017 https://web.archive.org/web/20170802210005/http://sbntools.psi.edu/ferret/PropertySearch/familyForm.action 2 August 2017 dead Asteroid 1368 Numidia – Proper Elements AstDyS-2, Asteroids – Dynamic Site https://newton.spacedys.com/astdys/index.php?pc=1.1.6&n=1368 29 October 2019 1368 9 November 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 9 November 2017 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 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 9 November 2017 6 Hanus, J. Durech, J. Broz, M. Warner, B. D. Pilcher, F. Stephens, R. Oey, J. Bernasconi, L. Casulli, S. Behrend, R. Polishook, D. Henych, T. Lehký, M. Yoshida, F. Ito, T. June 2011 A study of asteroid pole-latitude distribution based on an extended set of shape models derived by the lightcurve inversion method http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2011A&A...530A.134H Astronomy & Astrophysics 530 16 2011A&A...530A.134H 10.1051/0004-6361/201116738 1104.4114 9 November 2017 6 J. Hanus J. Durech D. A. Oszkiewicz R. Behrend B. Carry M. Delbo O. Adam V. Afonina R. Anquetin P. Antonini L. Arnold M. Audejean P. Aurard M. Bachschmidt B. Baduel E. Barbotin P. Barroy P. Baudouin L. Berard N. Berger L. Bernasconi J.-G. Bosch S. Bouley I. Bozhinova J. Brinsfield L. Brunetto G. Canaud J. Caron F. Carrier G. Casalnuovo S. Casulli M. Cerda L. Chalamet S. Charbonnel B. Chinaglia A. Cikota F. Colas J.-F. Coliac A. Collet J. Coloma M. Conjat E. Conseil R. Costa R. Crippa M. Cristofanelli Y. Damerdji Debackè A. re A. Decock Q. Déhais T. Déléage S. Delmelle C. Demeautis M. Drózdz G. Dubos T. Dulcamara M. Dumont R. Durkee R. Dymock A. Escalante del Valle N. 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Wolf February 2016 New and updated convex shape models of asteroids based on optical data from a large collaboration network Astronomy and Astrophysics 586 24 2016A&A...586A.108H 10.1051/0004-6361/201527441 1510.07422 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 1368 1367 Nongoma 1368 1369 Ostanina 001368 Category:Discoveries by Cyril Jackson (astronomer) Category:Named minor planets 19350430