1234 Elyna

Eoan asteroid October 2019 yes 1234 Elyna #D6D6D6 1234 Elyna.png Lightcurve-base 3D-model of 1234 Elyna. K. Reinmuth Heidelberg Obs. 18 October 1931 (1234) Elyna 1931 UF1933 BN ᵻ ' l ai n @Paxton's Botanical Dictionary (1868) Elȳna (Kobresia)(flowering plant) main-belt(outer)Eos 4 September 2017 (JD 2458000.5) 0 85.63 yr (31,277 days) 3.2788 AU 2.7526 AU 3.0157 AU 0.0873 5.24 yr (1,913 days) 148.48° 0.1882 ms / day 8.5120° 304.68° 87.424° 22.876 0.465 km22.88 0.47 km25.38 8.51 km25.70 3.2 km26.00 km (derived)29.08 0.90 km 5.421 0.001 h5.4219 0.0001 h5.4221 0.0001 h17.6 h (poor) 0.055 0.0040.0672 0.0200.10 0.070.1286 (derived)0.162 0.031 SMASS K 10.71 0.2410.7710.8010.910.9811.50 1234 Elyna ᵻ ' l ai n @, provisional designation 1931 UF, is an Eoan asteroid from the outer regions of the asteroid belt, approximately 25 kilometers in diameter. It was discovered on 18 October 1931, by astronomer Karl Reinmuth at the Heidelberg-Königstuhl State Observatory. The asteroid was named after the flowering plant Elyna (Kobresia; bog sedges). Orbit and classification Elyna is a member the Eos family (606), the largest asteroid family of the outer main belt consisting of nearly 10,000 asteroids.23 It orbits the Sun at a distance of 2.8–3.3 AU once every 5 years and 3 months (1,913 days; semi-major axis 3.02 AU). Its orbit has an eccentricity of 0.09 and an inclination of 9° with respect to the ecliptic. The body's observation arc begins at Heidelberg, four days after its official discovery observation. Physical characteristics In the SMASS classification, Elyna is a K-type asteroid, which agrees with the overall spectral type for members of the Eos family.23 Rotation period Several rotational lightcurves of Elyna were obtained from photometric observations since 1983. Lightcurve analysis gave a rotation period of 5.421 hours with a consolidated brightness amplitude between 0.21 and 0.37 magnitude (U=3-/2/3/1). 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, Elyna measures between 22.876 and 29.08 kilometers in diameter and its surface has an albedo between 0.055 and 0.162. The Collaborative Asteroid Lightcurve Link derives an albedo of 0.1286 and a diameter of 26.00 kilometers based on an absolute magnitude of 10.77. Naming This minor planet was named after the flowering plant Elyna, a subgenus of the genus Kobresia in the family Cyperaceae, sometimes called bog sedges. The official naming citation was mentioned in The Names of the Minor Planets by Paul Herget in 1955 (H 114). 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 2017-06-05 last obs. JPL Small-Body Database Browser: 1234 Elyna (1931 UF) https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2001234 Jet Propulsion Laboratory 6 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 1234 Elyna (1931 UF) Minor Planet Center https://www.minorplanetcenter.net/db_search/show_object?object_id=1234 6 January 2018 Asteroids and comets rotation curves – (1234) Elyna Behrend Raoul Geneva Observatory http://obswww.unige.ch/~behrend/page3cou.html#001234 6 January 2018 23 April 2019 https://web.archive.org/web/20190423121547/http://obswww.unige.ch/~behrend/page3cou.html#001234 dead Asteroid 1234 Elyna – Nesvorny HCM Asteroid Families V3.0 Small Bodies Data Ferret https://sbntools.psi.edu/ferret/SimpleSearch/results.action?targetName=1234+Elyna#Asteroid%201234%20ElynaEAR-A-VARGBDET-5-NESVORNYFAM-V3.0 26 October 2019 October 2026 InternetArchiveBot 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 1234 6 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 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) 6 C. R. Nugent A. Mainzer J. Bauer R. M. Cutri E. A. Kramer T. Grav J. Masiero S. Sonnett E. L. Wright September 2016 NEOWISE Reactivation Mission Year Two: Asteroid Diameters and Albedos The Astronomical Journal 152 3 12 2016AJ....152...63N 10.3847/0004-6256/152/3/63 1606.08923 free Binzel, R. P. October 1987 A photoelectric survey of 130 asteroids Icarus 72 1 135–208 0019-1035 1987Icar...72..135B 10.1016/0019-1035(87)90125-4 6 Amadeo Aznar Macias Alfonso Carreno Garcerain Enrique Arce Masego Pedro Brines Rodriguez Juan Lozano de Haro Alvaro Fornas Silva Gonzalo Fornas Silva Vicente Mas Martinez Onofre Rodrigo Chiner David Herrero Porta July 2016 Twenty-one Asteroid Lightcurves at Group Observadores de Asteroides (OBAS): Late 2015 to Early 2016 The Minor Planet Bulletin 43 3 257–263 1052-8091 2016MPBu...43..257A 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 1234 1233 Kobresia 1234 1235 Schorria 001234 Category:Discoveries by Karl Wilhelm Reinmuth Category:Named minor planets 001234 19311018