1911 Schubart

Dark Hilda asteroid October 2019 yes 1911 Schubart #D6D6D6 25 October 1973 P. Wild Zimmerwald Obs. (1911) Schubart 1973 UD1928 DW1933 UX 11941 SU 11951 AH 11952 DS 21960 EF1968 FM1972 RO1972 TY 4 Joachim Schubart(German astronomer) main-belt(outer)HildaSchubart 4 September 2017 (JD 2458000.5) 0 89.27 yr (32,606 days) 4.6512 AU 3.3013 AU 3.9762 AU 0.1697 7.93 yr (2,896 days) 136.84° 0.1243 ms / day 1.6431° 284.84° 181.75° 0.5059 AU 3.0310 64.66 23.84 km67.476 0.504 km80.09 2.0 km80.11 km (derived)80.13 1.25 km 7.91 0.02 h11.915 0.002 h 0.0249 0.0010.025 0.0010.0316 (derived)0.035 0.0010.04 0.010.04 0.03 Tholen PC/PB–V 0.701U–B 0.217 9.8510.11 1911 Schubart, provisional designation 1973 UD, is a dark Hildian asteroid and parent body of the Schubart family, located in the outermost region of the asteroid belt, approximately 70 kilometers in diameter. It was discovered on 25 October 1973, by Swiss astronomer Paul Wild at Zimmerwald Observatory, near Bern, Switzerland. The asteroid was named after German astronomer Joachim Schubart. Orbit and classification With a diameter of 65–80 kilometers, it is one of the largest members of the Hilda group of asteroids, which are in 3:2 orbital resonance with the gas-giant Jupiter. More specifically, it is the parent body and namesake of the Schubart family (002), one of two asteroid families within the Hilda group (the other one is the Hilda family itself).23 It is the darkest P-type asteroid with a very low geometric albedo of 0.0249. The body's observation arc begins with its first identification as 1928 DW at Heidelberg Observatory in February 1928, more than 45 years prior to its official discovery observation at Zimmerwald . Physical characteristics In the Tholen classification, Schubart is a primitive P-type asteroid. The Wide-field Infrared Survey Explorer (WISE) characterized it as both P- and C-type asteroid. 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 WISE telescope, Schubart measures between 64.66 and 80.13 kilometers in diameter and its surface has an albedo between 0.0249 and 0.04. The Collaborative Asteroid Lightcurve Link derives an albedo of 0.0316 and a diameter of 80.11 kilometers based on an absolute magnitude of 9.85. Rotation period Two rotational lightcurves of Schubart were obtained from photometric observations by Johan Warell and Robert Stephens in 2015 and 2016, respectively. Lightcurve analysis gave a rotation period of 7.91 and 11.915 hours with a brightness amplitude of 0.11 and 0.22 in magnitude, respectively (U=2/2). Naming The minor planet is named in after German ARI-astronomer Joachim Schubart (born 1928), who is also a discoverer of minor planets, namely 2000 Herschel and 4724 Brocken. He studied in detail members of the Hilda family, as he developed an averaging techniques for observing the long-term motions of asteroids. Schubart has also been an active member on several commissions of the International Astronomical Union. The official 1911 naming citation was published by the Minor Planet Center on 20 February 1976 (M.P.C. 3937). References 30em 2017-07-04 last obs. JPL Small-Body Database Browser: 1911 Schubart (1973 UD) https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2001911 Jet Propulsion Laboratory 3 December 2017 Schmadel Lutz D. Dictionary of Minor Planet Names Springer Berlin Heidelberg 153 2007 978-3-540-00238-3 10.1007/978-3-540-29925-7_1912 (1911) Schubart 1911 Schubart (1973 UD) Minor Planet Center https://www.minorplanetcenter.net/db_search/show_object?object_id=1911 3 December 2017 Dictionary of Minor Planet Names – Addendum to Fifth Edition (2006–2008) 2009 https://archive.org/details/dictionaryminorp2008schm limited Appendix – Publication Dates of the MPCs Schmadel Lutz D. Springer Berlin Heidelberg 221 978-3-642-01964-7 10.1007/978-3-642-01965-4 2009dmpn.book.....S Individual members: Joachim Schubart IAU – International Astronomical Union https://www.iau.org/administration/membership/individual/2296/ 5 December 2017 24 March 2022 https://web.archive.org/web/20220324150051/https://www.iau.org/administration/membership/individual/2296/ dead 6 T. Grav A. K. Mainzer J. Bauer J. Masiero T. Spahr R. S. McMillan R. Walker R. Cutri E. Wright P. R. Eisenhardt E. Blauvelt E. DeBaun D. Elsbury T. Gautier S. Gomillion E. Hand A. Wilkins January 2012 WISE/NEOWISE Observations of the Hilda Population: Preliminary Results http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2012ApJ...744..197G The Astrophysical Journal 744 2 15 2012ApJ...744..197G 10.1088/0004-637X/744/2/197 1110.0283 44000310 3 December 2017 Asteroid 1911 Schubart Small Bodies Data Ferret https://sbntools.psi.edu/ferret/SimpleSearch/results.action?targetName=1911+Schubart 21 October 2019 8 November 2020 https://web.archive.org/web/20201108082009/https://sbntools.psi.edu/ferret/SimpleSearch/results.action?targetName=1911+Schubart dead 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 119280014 Brož M. Vokrouhlický D. 1104.4004 2008MNRAS.390..715B October 2008 Asteroid families in the first-order resonances with Jupiter Monthly Notices of the Royal Astronomical Society 390 2 715–732 10.1111/j.1365-2966.2008.13764.x free 53965791 1911 3 December 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 – IRAS-A-FPA-3-RDR-IMPS-V6.0 12 2004PDSS...12.....T 17 October 2019 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 9341381 3 December 2017 Stephens, Robert D. October 2016 Asteroids Observed from CS3: 2016 April - June The Minor Planet Bulletin 43 4 336–339 32455386 7243975 1052-8091 2016MPBu...43..336S Warell, Johan October 2017 Lightcurve Observations of Nine Main-belt Asteroids http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2017MPBu...44..304W The Minor Planet Bulletin 44 4 304–305 1052-8091 2017MPBu...44..304W 3 December 2017 6 M. Dahlgren J. F. Lahulla C.-I. Lagerkvist J. Lagerros S. Mottola A. Erikson M. Gonano-Beurer M. Di Martino June 1998 A Study of Hilda Asteroids. V. Lightcurves of 47 Hilda Asteroids http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=1998Icar..133..247D Icarus 133 2 247–285 1998Icar..133..247D 10.1006/icar.1998.5919 3 December 2017 External links Asteroid Lightcurve Database (LCDB), query form (info https://web.archive.org/web/20110721225144/http://www.minorplanet.info/lightcurvedatabase.html 21 July 2011 ) 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 1911 1910 Mikhailov 1911 1912 Anubis 001911 001911 Category:Discoveries by Paul Wild (Swiss astronomer) Category:Named minor planets 001911 19731025