1085 Amaryllis

Background asteroid October 2019 yes 1085 Amaryllis #D6D6D6 K. Reinmuth Heidelberg Obs. 31 August 1927 (1085) Amaryllis 1927 QH1964 CLA908 HBA915 QAA921 RC æ m ə ˈ r ɪ l ᵻ samaryllis Amaryllis(flowering plant) main-belt(outer)background 4 September 2017 (JD 2458000.5) 0 109.40 yr (39,957 days) 3.3182 AU 3.0506 AU 3.1844 AU 0.0420 5.68 yr (2,076 days) 40.309° 0.1734 ms / day 6.6396° 139.98° 127.53° 65.55 14.66 km67.14 21.21 km69.281 0.124 km69.68 km (derived)69.95 1.4 km71.025 1.105 km72.93 0.78 km 18.111 0.025 h18.2 0.1 h 0.04 0.020.04 0.040.0437 (derived)0.058 0.0020.0608 0.00580.0628 0.0030.067 0.013 XC (assumed) 9.409.709.89.819.92 0.25 1085 Amaryllis æ m ə ˈ r ɪ l ᵻ s, provisional designation 1927 QH, is a background asteroid from the outer regions of the asteroid belt, approximately 69 kilometers in diameter. It was discovered on 31 August 1927, by astronomer Karl Reinmuth at the Heidelberg-Königstuhl State Observatory in southwest Germany. The asteroid was named after the flowering plant Amaryllis. Orbit and classification Amaryllis is a non-family asteroid from the main belt's background population. It orbits the Sun in the outer asteroid belt at a distance of 3.1–3.3 AU once every 5 years and 8 months (2,076 days). Its orbit has an eccentricity of 0.04 and an inclination of 7° with respect to the ecliptic. The asteroid was first identified as A908 HB at Taunton Observatory (803) in April 1908. A few days later, the body's observation arc begins at the United States Naval Observatory (786) in May 1908, or more than 19 years prior to its official discovery observation at Heidelberg. Physical characteristics Amaryllis has been characterized as an X-type asteroid by Pan-STARRS photometric survey. It is also an assumed carbonaceous C-type asteroid. Rotation period In March 2004, a first rotational lightcurve of Amaryllis was obtained from photometric observations by French amateur astronomer René Roy. Lightcurve analysis gave a rotation period of 18.2 hours with a brightness variation of 0.20 magnitude (U=2). In May 2016, the Spanish amateur astronomer group OBAS (Asteroid Observers, es Observadores de Asteroids) measured a refined period of 18.111 hours with an amplitude of 0.19 magnitude (U=3-). 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, Amaryllis measures between 65.55 and 72.93 kilometers in diameter and its surface has an albedo between 0.04 and 0.067. The Collaborative Asteroid Lightcurve Link derives an albedo of 0.0437 and a diameter of 69.68 kilometers based on an absolute magnitude of 9.8. Naming This minor planet was named after the flowering planet Amaryllis, also known as belladonna lily, Jersey lily, naked lady, or amarillo. 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) and also contained a sequence of 28 asteroids, starting with 1054 Forsytia, that were named after plants, in particular flowering plants (also see list of minor planets named after animals and plants Plants). References 30em 2017-09-23 last obs. JPL Small-Body Database Browser: 1085 Amaryllis (1927 QH) https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2001085 Jet Propulsion Laboratory 24 October 2017 Dictionary of Minor Planet Names – (1085) Amaryllis Schmadel Lutz D. Springer Berlin Heidelberg 92 2007 978-3-540-00238-3 10.1007/978-3-540-29925-7_1086 (1085) Amaryllis Dictionary of Minor Planet Names – (1054) Forsytia Schmadel Lutz D. Springer Berlin Heidelberg 90 2007 978-3-540-00238-3 10.1007/978-3-540-29925-7_1055 (1054) Forsytia 1085 Amaryllis (1927 QH) Minor Planet Center https://www.minorplanetcenter.net/db_search/show_object?object_id=1085 24 October 2017 Asteroids and comets rotation curves – (1085) Amaryllis Behrend Raoul Geneva Observatory https://obswww.unige.ch/~behrend/page3cou.html#001085 24 October 2017 https://web.archive.org/web/20200123022615/https://obswww.unige.ch/~behrend/page3cou.html#001085 23 January 2020 dead 6 Joseph R. Masiero T. Grav A. K. Mainzer C. R. Nugent J. M. Bauer R. Stevenson S. Sonnett August 2014 Main-belt Asteroids with WISE/NEOWISE: Near-infrared Albedos http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2014ApJ...791..121M The Astrophysical Journal 791 2 11 2014ApJ...791..121M 10.1088/0004-637X/791/2/121 1406.6645 119293330 24 October 2017 Asteroid 1085 Amaryllis – Proper Elements AstDyS-2, Asteroids – Dynamic Site https://newton.spacedys.com/astdys/index.php?pc=1.1.6&n=1085 28 October 2019 1085 24 October 2017 6 C. R. Nugent A. Mainzer J. Masiero J. Bauer R. M. Cutri T. Grav E. Kramer S. 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 24 October 2017 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 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) 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 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. Maleszewski November 2011 NEOWISE Studies of Spectrophotometrically Classified Asteroids: Preliminary Results The Astrophysical Journal 741 2 25 2011ApJ...741...90M 10.1088/0004-637X/741/2/90 1109.6407 35447010 6 Enrique Arce Mansego Pedro Brines Rodriguez Juan Lozano de Haro Onofre Rodrigo Chiner Alvaro Fornas Silva David Herrero Porta Vicente Mas Martinez Gonzalo Fornas Silva Alfonso Carreno Garceran October 2016 Eighteen Asteroids Lightcurves at Asteroides Observers (OBAS) - MPPD: 2016 March–May https://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2016MPBu...43..332M The Minor Planet Bulletin 43 4 332–336 1052-8091 2016MPBu...43..332M 24 October 2017 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 24 October 2017 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 – Observatoire de Genève, Raoul Behrend Discovery Circumstances: Numbered Minor Planets (1)-(5000) – Minor Planet Center 1085 1084 Tamariwa 1085 1086 Nata 001085 Category:Discoveries by Karl Wilhelm Reinmuth Category:Named minor planets 19270831