1055 Tynka

Main-belt asteroid October 2019 yes 1055 Tynka #D6D6D6 E. Buchar Algiers Obs. 17 November 1925 (1055) Tynka 1925 WGA902 TB Tynka Buchar(discoverer's mother) main-belt(inner)Flora 4 September 2017 (JD 2458000.5) 0 114.42 yr (41,793 days) 2.6561 AU 1.7402 AU 2.1981 AU 0.2083 3.26 yr (1,190 days) 129.33° 0.3024 ms / day 5.2778° 147.15° 176.64° 8.95 0.22 km10.31 km (calculated)13.479 0.225 km 5.9818 0.0003 h11.75 0.01 h11.893 0.002 h11.893 0.005 h 0.169 0.0230.24 (assumed)0.350 0.019 Tholen SSMASS S 11.9012.0012.112.33 0.29 1055 Tynka, provisional designation 1925 WG, is a stony Florian asteroid from the inner regions of the asteroid belt, approximately 10 kilometers in diameter. It was discovered on 17 November 1925, by Czech astronomer Emil Buchar at the Algiers Observatory in North Africa, who named it after his mother Tynka Buchar. Orbit and classification Tynka is a member of the Flora family (402), a giant asteroid family and the largest family of stony asteroids in the main belt.23 It orbits the Sun in the inner asteroid belt at a distance of 1.7–2.7 AU once every 3 years and 3 months (1,190 days). Its orbit has an eccentricity of 0.21 and an inclination of 5° with respect to the ecliptic. The body's observation arc begins with its identification as A902 TB at Heidelberg Observatory in October 1902, more than 23 years prior to its official discovery observation at Algiers. Physical characteristics Tynka is a common stony S-type asteroid in both the Tholen and SMASS classification, which agrees with the overall spectral type for members of the Flora family.23 Rotation period Three rotational lightcurves of Tynka were independently obtained from photometric observations by astronomers David Higgins, Agnieszka Kryszczyńska and Robert Stephens. Lightcurve analysis gave a rotation period of 11.75 and 11.893 hours with a brightness variation between 0.06 and 0.33 magnitude (U=2-/2/2). An alternative period solution of 5.9818 hours with an amplitude of 0.17 was measured by French amateur astronomer René Roy in April 2012 (U=2). Diameter and albedo According to the surveys carried out by the Japanese Akari satellite and the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Tynka measures 8.95 and 13.48 kilometers in diameter and its surface has an albedo of 0.169 and 0.350, respectively. The Collaborative Asteroid Lightcurve Link assumes an albedo of 0.24 – derived from 8 Flora, the largest member and namesake of the Flora family – and calculates a diameter of 10.31 kilometers based on an absolute magnitude of 12.1. Naming This minor planet was named by the discoverer after his mother Tynka Buchar. The official naming citation was mentioned in The Names of the Minor Planets by Paul Herget in 1955 (H 100). Emil Buchar (1901–1979) worked at the Institute of Astronomy and Geophysics at the Technical University in Prague and was a pioneer of satellite geodesy. This asteroid was his only minor-planet discovery. The minor planet 3141 3141 Buchar was named in his honor. References 30em 2017-03-11 last obs. JPL Small-Body Database Browser: 1055 Tynka (1925 WG) https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2001055 Jet Propulsion Laboratory 18 October 2017 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_1056 (1055) Tynka 1055 Tynka (1925 WG) Minor Planet Center https://www.minorplanetcenter.net/db_search/show_object?object_id=1055 18 October 2017 Minor Planet Discoverers (by number) Minor Planet Center https://www.minorplanetcenter.net/iau/lists/MPDiscsNum.html 3 October 2017 18 October 2017 Asteroids and comets rotation curves – (1055) Tynka Behrend Raoul Geneva Observatory http://obswww.unige.ch/~behrend/page3cou.html#001055 18 October 2017 3 December 2002 https://web.archive.org/web/20021203214643/http://obswww.unige.ch/~behrend/page3cou.html#001055 dead Asteroid 1055 Tynka Small Bodies Data Ferret – Nesvorny HCM Asteroid Families V3.0 https://sbntools.psi.edu/ferret/SimpleSearch/results.action?targetName=1055+Tynka#Asteroid%201055%20TynkaEAR-A-VARGBDET-5-NESVORNYFAM-V3.0 26 October 2019 3 October 2020 https://web.archive.org/web/20201003195927/https://sbntools.psi.edu/ferret/SimpleSearch/results.action?targetName=1055+Tynka#Asteroid%201055%20TynkaEAR-A-VARGBDET-5-NESVORNYFAM-V3.0 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 1055 18 October 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 The Astrophysical Journal Letters 759 1 5 2012ApJ...759L...8M 10.1088/2041-8205/759/1/L8 1209.5794 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) David Higgins Frederick Pilcher October 2009 Lightcurve Analysis of 48 Doris and 1055 Tynka The Minor Planet Bulletin 36 4 143–144 1052-8091 2009MPBu...36..143H 6 A. Kryszczynska F. Colas M. Polinska R. Hirsch V. Ivanova G. Apostolovska B. Bilkina F. P. Velichko T. Kwiatkowski P. Kankiewicz F. Vachier V. Umlenski T. Michalowski A. Marciniak A. Maury K. Kaminski M. Fagas W. Dimitrov W. Borczyk K. Sobkowiak J. Lecacheux R. Behrend A. Klotz L. Bernasconi R. Crippa F. Manzini R. Poncy P. Antonini D. Oszkiewicz T. Santana-Ros October 2012 Do Slivan states exist in the Flora family?. I. Photometric survey of the Flora region Astronomy and Astrophysics 546 51 2012A&A...546A..72K 10.1051/0004-6361/201219199 free https://hal.archives-ouvertes.fr/hal-03123875/file/aa19199-12.pdf Stephens, Robert D. October 2012 Asteroids Observed from Santana, CS3 and GMARS Observatories: 2012 April - June The Minor Planet Bulletin 39 4 226–228 1052-8091 2012MPBu...39..226S 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 Icarus 261 34–47 2015Icar..261...34V 10.1016/j.icarus.2015.08.007 1506.00762 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 1055 1054 Forsytia 1055 1056 Azalea 001055 Category:Named minor planets 001055 001055 19251117