1080 Orchis

Main-belt asteroid October 2019 yes 1080 Orchis #D6D6D6 001080-asteroid shape model (1080) Orchis.png Modelled shape of Orchis from its lightcurve K. Reinmuth Heidelberg Obs. 30 August 1927 (1080) Orchis 1927 QB1955 DTA906 BH ' Or k ᵻ sorchis Orchis (flowering plant) main-belt(inner)background 4 September 2017 (JD 2458000.5) 0 111.76 yr (40,821 days) 3.0452 AU 1.7924 AU 2.4188 AU 0.2590 3.76 yr (1,374 days) 278.54° 0.2620 ms / day 4.5873° 2.0437° 57.028° 20.755 8.470 km21.797 0.130 km21.86 0.26 km22.918 0.241 km23.28 1.7 km23.53 6.59 km24.62 6.75 km 16.061 0.004 h16.0657 0.0005 h16.075 0.0207 h16.1 0.1 h (255.0°, 27.0°) (λ1/β1) (71.0°, 28.0°) (λ2/β2) 0.029 0.0020.03 0.020.031 0.0320.0331 0.00280.0430 0.0070.0508 0.04990.051 0.001 Tholen FB–V 0.624U–B 0.206 12.133 0.002 (R)12.2012.3212.43 1080 Orchis, provisional designation 1927 QB, is a dark background asteroid from the inner regions of the asteroid belt. It was discovered on 30 August 1927, by German astronomer Karl Reinmuth at the Heidelberg Observatory in southwest Germany. The carbonaceous F-type asteroid has a rotation period of 16.1 hours and measures approximately 22 km mi off us in diameter. It was named after the flowering plant Orchis. Orbit and classification Orchis is a non-family asteroid of the main belt's background population. It orbits the Sun in the inner asteroid belt at a distance of 1.8–3.0 AU once every 3 years and 9 months (1,374 days; semi-major axis of 2.42 AU). Its orbit has an eccentricity of 0.26 and an inclination of 5° with respect to the ecliptic. The asteroid was first observed as A906 BH at Heidelberg in January 1906. The body's observation arc begins with its official discovery observation in August 1927. Naming This minor planet was named after the flowering plant Orchis, a genus in the orchid family. The official naming citation was mentioned in The Names of the Minor Planets by Paul Herget in 1955 (H 102). 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). Physical characteristics In the Tholen classification, Orchis is an uncommon F-type asteroid, a type which belongs to the wider C-complex of carbonaceous asteroids. Rotation period and poles In 2010, three rotational lightcurves of Orchis were obtained from photometric observations. Lightcurve analysis gave a rotation period of 16.061, 16.075 and 16.1 hours with a brightness amplitude of between 0.23 and 0.31 magnitude (U=2+/2/3). A modeled lightcurve based on optical data from a large collaboration network found a concurring period of 16.0657 hours and two spin axis of (255.0°, 27.0°) and (71.0°, 28.0°) in ecliptic coordinates (λ, β). 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, Orchis measures between 20.755 and 24.62 kilometers in diameter and its surface has an albedo between 0.029 and 0.051. The Collaborative Asteroid Lightcurve Link adopts the results obtained by IRAS, that is, an albedo of 0.0430 and a diameter of 23.28 kilometers based on an absolute magnitude of 12.2. References 30em 2017-10-29 last obs. JPL Small-Body Database Browser: 1080 Orchis (1927 QB) https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2001080 Jet Propulsion Laboratory 28 November 2017 Dictionary of Minor Planet Names Schmadel Lutz D. Springer Berlin Heidelberg (1080) Orchis 92 2007 978-3-540-00238-3 10.1007/978-3-540-29925-7_1081 Dictionary of Minor Planet Names Schmadel Lutz D. Springer Berlin Heidelberg (1054) Forsytia 90 2007 978-3-540-00238-3 10.1007/978-3-540-29925-7_1055 1080 Orchis (1927 QB) Minor Planet Center https://www.minorplanetcenter.net/db_search/show_object?object_id=1080 28 November 2017 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 http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2011ApJ...741...68M The Astrophysical Journal 741 2 20 2011ApJ...741...68M 10.1088/0004-637X/741/2/68 1109.4096 118745497 28 November 2017 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 1080 28 November 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 (online, AcuA catalog p. 153) 6 A. Mainzer T. Grav J. Masiero E. Hand J. Bauer D. Tholen R. S. McMillan T. Spahr R. M. Cutri E. Wright J. Watkins W. Mo C. 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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 28 November 2017 Ruthroff, John C. April 2011 Lightcurve Analysis of Eight Main-belt Asteroids and a Revised Period for 185 Eunike http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2011MPBu...38...86R The Minor Planet Bulletin 38 2 86–88 1052-8091 2011MPBu...38...86R 28 November 2017 6 Adam Waszczak Chan-Kao Chang Eran O. Ofek Russ Laher Frank Masci David Levitan Jason Surace Yu-Chi Cheng Wing-Huen Ip Daisuke Kinoshita George Helou Thomas A. 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Wolf February 2016 New and updated convex shape models of asteroids based on optical data from a large collaboration network Astronomy and Astrophysics 586 24 2016A&A...586A.108H 10.1051/0004-6361/201527441 1510.07422 119112278 Asteroid 1080 Orchis – Proper Elements AstDyS-2, Asteroids – Dynamic Site https://newton.spacedys.com/astdys/index.php?pc=1.1.6&n=1080 28 October 2019 Asteroid 1080 Orchis Small Bodies Data Ferret https://sbntools.psi.edu/ferret/SimpleSearch/results.action?targetName=1080+Orchis 13 March 2020 https://web.archive.org/web/20201004033752/https://sbntools.psi.edu/ferret/SimpleSearch/results.action?targetName=1080+Orchis 4 October 2020 dead External links Lightcurve Database Query (LCDB), at www.minorplanet.info 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 – Geneva Observatory, Raoul Behrend Discovery Circumstances: Numbered Minor Planets (1)-(5000) – Minor Planet Center 1080 1079 Mimosa 1080 1081 Reseda 001080 Category:Discoveries by Karl Wilhelm Reinmuth Category:Named minor planets 001080 19270830