1101 Clematis

Asteroid October 2019 yes 1101 Clematis #D6D6D6 K. Reinmuth Heidelberg Obs. 22 September 1928 (1101) Clematis 1928 SJ1928 WB1963 TG 11969 TG 1 ˈ k l ɛ m ə t ᵻ sclematis Clematidian κληματίς clēmatis(flowering plant) main-belt(outer)Alauda 4 September 2017 (JD 2458000.5) 0 89.17 yr (32,571 days) 3.4833 AU 2.9770 AU 3.2302 AU 0.0784 5.81 yr (2,120 days) 151.11° 0.1698 ms / day 21.424° 201.98° 107.54° 29.13 1.62 km29.65 1.21 km33.765 0.809 km37.60 km (derived)37.86 1.4 km 6 h8.5994 0.0006 h8.61 0.02 h12.68 0.01 h34.3 0.1 hlightcurve-plot-Warner 0.0788 (derived)0.1124 0.0090.127 0.0190.190 0.023 C (assumed) 10.1010.5010.610.64 0.28 1101 Clematis ˈ k l ɛ m ə t ᵻ s is an Alauda asteroid from the outermost regions of the asteroid belt, approximately 37 kilometers in diameter. It was discovered on 22 September 1928, by German astronomer Karl Reinmuth at the Heidelberg-Königstuhl State Observatory in southwest Germany, and assigned the provisional designation 1928 SJ. It was named for the flowering plant Clematis. The presumably carbonaceous asteroid has a relatively long rotation period of 34.3 hours. Orbit and classification Clematis is a member of the Alauda family (902), a large family of typically "bright" carbonaceous asteroids and named after its parent body, 702 Alauda.23 According to a different study, this object is also the namesake of the Clematis family, a small family of 5–16 asteroids hence they may have arisen from the same collisional event. All members have a relatively high orbital inclination. It orbits the Sun in the outermost asteroid belt at a distance of 3.0–3.5 AU once every 5 years and 10 months (2,120 days; semi-major axis of 3.23 AU). Its orbit has an eccentricity of 0.08 and an inclination of 21° with respect to the ecliptic. The body's observation arc begins with its observation as 1963 TG 1 at Goethe Link Observatory in October 1963, more than 35 years after its official discovery observation at Heidelberg. Physical characteristics Clematis is an assumed carbonaceous C-type asteroids, while the overall spectral type for members of the Alauda family is that of a somewhat brighter B-type.23 Rotation period In September 2009, a rotational lightcurvelightcurve-plot-Warner of Clematis was obtained from photometric observations by American astronomers Brian Warner at the Palmer Divide Observatory, Colorado, and by Robert Stephens at GMARS (G79, California. Lightcurve analysis gave a synodic rotation period of 34.3 hours with a brightness amplitude of 0.16 magnitude (U=2), which significantly differs from previously reported periods of 6 to 12.68 hours (U=1/2/2/2). While not being a slow rotator, Clematis has a much longer period than that known for most other asteroids, and its small amplitude is indicative for a rather spheroidal shape. 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, Clematis measures between 29.13 and 37.86 kilometers in diameter and its surface has an albedo between 0.1124 and 0.190. The Collaborative Asteroid Lightcurve Link derives an albedo of 0.0788 and a diameter of 37.60 kilometers based on an absolute magnitude of 10.5. Naming This minor planet was named after the flowering plant Clematis, a genus within the Ranunculaceae (buttercup or crowfoot family). The official naming citation was mentioned in The Names of the Minor Planets by Paul Herget in 1955 (H n.a.). Reinmuth's flowers Due to his many discoveries, Karl Reinmuth submitted a large list of 66 newly named asteroids in the early 1930s. The list covered his discoveries with numbers between 1009 (1009) and 1200 (1200). This list also contained a sequence of 28 asteroids, starting with 1054 Forsytia, that were all named after plants, in particular flowering plants (also see list of minor planets named after animals and plants). Notes lightcurve-plot-Warner Lightcurve plot of 1101 Clematis, Palmer Divide Observatory, B. D. Warner (2009): rotation period 34.3 0.1 hours with a brightness amplitude of 0.16 0.02 mag. Quality code of 2. Summary figures at the LCDB References 30em 2017-11-25 last obs. JPL Small-Body Database Browser: 1101 Clematis (1928 SJ) https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2001101 Jet Propulsion Laboratory 12 January 2018 Schmadel Lutz D. Dictionary of Minor Planet Names Springer Berlin Heidelberg 93 2007 978-3-540-00238-3 10.1007/978-3-540-29925-7_1102 (1101) Clematis Schmadel Lutz D. Dictionary of Minor Planet Names Springer Berlin Heidelberg 90 2007 978-3-540-00238-3 10.1007/978-3-540-29925-7_1055 (1054) Forsytia 1101 Clematis (1928 SJ) Minor Planet Center https://www.minorplanetcenter.net/db_search/show_object?object_id=1101 12 January 2018 Asteroids and comets rotation curves – (1101) Clematis Behrend Raoul Geneva Observatory http://obswww.unige.ch/~behrend/page3cou.html#001101 12 January 2018 3 December 2002 https://web.archive.org/web/20021203214643/http://obswww.unige.ch/~behrend/page3cou.html#001101 dead Asteroid 1101 Clematis – Nesvorny HCM Asteroid Families V3.0 Small Bodies Data Ferret https://sbntools.psi.edu/ferret/SimpleSearch/results.action?targetName=1101+Clematis#Asteroid%201101%20ClematisEAR-A-VARGBDET-5-NESVORNYFAM-V3.0 26 October 2019 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 Bojan Novaković Alberto Cellino Zoran Knežević November 2011 Families among high-inclination asteroids Icarus 216 1 69–81 2011Icar..216...69N 10.1016/j.icarus.2011.08.016 1108.3740 54772591 1101 12 January 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 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 46350317 12 January 2018 Stephens, Robert D. March 2004 Photometry of 683 Lanzia, 1101 Clematis, 1499 Pori, 1507 Vaasa, and 3893 DeLaeter http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2004MPBu...31....4S The Minor Planet Bulletin 31 1 4–6 1052-8091 2004MPBu...31....4S 12 January 2018 Brian D. Warner Robert D. Stephens April 2010 Analysis of the Lightcurve of 1101 Clematis http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2010MPBu...37...73W The Minor Planet Bulletin 37 2 73–74 1052-8091 2010MPBu...37...73W 12 January 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 53493339 12 January 2018 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 1101 1100 Arnica 1101 1102 Pepita 001101 001101 Category:Discoveries by Karl Wilhelm Reinmuth Category:Named minor planets 19280922