1229 Tilia

Themistian asteroid October 2019 yes 1229 Tilia #D6D6D6 K. Reinmuth Heidelberg Obs. 9 October 1931 (1229) Tilia 1931 TP 11936 MC1942 PH1948 PT1951 AC1951 CM1973 YW 31975 FP1976 KB 11977 RC 41978 VK 4 ' t I l i @ Tilia (flowering plant) main-belt(outer)Themis 4 September 2017 (JD 2458000.5) 0 85.74 yr (31,318 d) 3.7569 AU 2.6918 AU 3.2243 AU 0.1652 5.79 yr (2,115 days) 283.97° 0.1702 ms / day 1.0392° 197.37° 166.53° 27.795 0.276 km 0.069 0.008 11.3 1229 Tilia ' t I l i @ is a dark Themistian asteroid from the outermost regions of the asteroid belt, approximately 28 kilometers in diameter. It was discovered on 9 October 1931, by astronomer Karl Reinmuth at the Heidelberg Observatory in southwest Germany, and given the provisional designation 1931 TP 1. The asteroid was named for the genus of trees, Tilia (lime tree, linden, basswood). Orbit and classification Tilia belongs to the Themis family (602), a very large family of carbonaceous asteroids, named after 24 Themis.23 It orbits the Sun in the outermost asteroid belt at a distance of 2.7–3.8 AU once every 5 years and 9 months (2,115 days; semi-major axis of 3.22 AU). Its orbit has an eccentricity of 0.17 and an inclination of 1° with respect to the ecliptic. The body's observation arc begins with a precovery taken at Lowell Observatory on 7 October 1931, or two days prior to its official discovery observation at Heidelberg. Physical characteristics The asteroid's spectral type is unknown. Members of the Themis family are typically C-type asteroids. Tilias albedo (see below) agrees with this spectral type.23 Diameter and albedo According to the survey carried out by the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Tilia measures 27.795 kilometers in diameter and its surface has an albedo of 0.069. Rotation period As of 2018, no rotational lightcurve of Tilia has been obtained from photometric observations. The asteroid's rotation period, spin axis and shape remain unknown. Naming This minor planet was named after, Tilia – commonly known as lime tree, linden, or basswood – a genus of trees in the family Tiliaceae. The official naming citation was mentioned in The Names of the Minor Planets by Paul Herget in 1955 (H 113). Meta-naming The initials of the minor planets 1227 (1227) through 1234 (1234), all discovered by Reinmuth, spell out "G. Stracke". Gustav Stracke was a German astronomer and orbit computer, who had asked that no planet be named after him. In this manner Reinmuth was able to honour the man whilst honoring his wish. Nevertheless, Reinmuth directly honored Stracke by naming planet 1019 1019 Strackea later on. The astronomer Brian Marsden was honored by the same type of meta-naming using consecutive initial letters in 1995, spelling out "Brian M." in the sequence of minor planets 5694 (5694) through 5699 (5699). 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). References 30em 2017-07-04 last obs. JPL Small-Body Database Browser: 1229 Tilia (1931 TP1) https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2001229 Jet Propulsion Laboratory 11 January 2018 Dictionary of Minor Planet Names – (1229) Tilia Schmadel Lutz D. Springer Berlin Heidelberg 102 2007 https://books.google.com/books?id=aeAg1X7afOoC&dq=1229+Tilia&pg=PA100 978-3-540-00238-3 11 January 2018 Schmadel Lutz D. Dictionary of Minor Planet Names (1234) Elyna Springer Berlin Heidelberg 102–103 2007 978-3-540-00238-3 10.1007/978-3-540-29925-7_1235 Schmadel Lutz D. Dictionary of Minor Planet Names (1054) Forsytia Springer Berlin Heidelberg 90 2007 978-3-540-00238-3 10.1007/978-3-540-29925-7_1055 1229 Tilia (1931 TP1) Minor Planet Center https://www.minorplanetcenter.net/db_search/show_object?object_id=1229 11 January 2018 Asteroid 1229 Tilia – Nesvorny HCM Asteroid Families V3.0 Small Bodies Data Ferret https://sbntools.psi.edu/ferret/SimpleSearch/results.action?targetName=1229+Tilia#Asteroid%201229%20TiliaEAR-A-VARGBDET-5-NESVORNYFAM-V3.0 26 October 2019 https://web.archive.org/web/20201004055953/https://sbntools.psi.edu/ferret/SimpleSearch/results.action?targetName=1229+Tilia#Asteroid%201229%20TiliaEAR-A-VARGBDET-5-NESVORNYFAM-V3.0 4 October 2020 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 978-0-8165-3213-1 6 Joseph R. Masiero A. K. Mainzer T. Grav J. M. Bauer R. M. Cutri J. Dailey P. R. M. Eisenhardt R. S. McMillan T. B. Spahr M. F. Skrutskie D. Tholen R. G. Walker E. L. Wright E. DeBaun D. Elsbury T. IV Gautier S. Gomillion A. Wilkins November 2011 Main Belt Asteroids with WISE/NEOWISE. I. Preliminary Albedos and Diameters The Astrophysical Journal 741 2 20 2011ApJ...741...68M 10.1088/0004-637X/741/2/68 1109.4096 1229 11 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 1229 1228 Scabiosa 1229 1230 Riceia 001229 Category:Discoveries by Karl Wilhelm Reinmuth Category:Named minor planets 19311009