166 Rhodope

Main-belt asteroid October 2019 yes 166 Rhodope #D6D6D6 166Rhodope (Lightcurve Inversion).png Lightcurve-based 3-D model of Rhodope C. H. F. Peters Litchfield Obs. 15 August 1876 (166) Rhodope A876 PB ' r ɒ d ə p iːNoah Webster (1884) A Practical Dictionary of the English Language Queen Rhodope(Greek mythology) main-belt(middle)backgroundEunomia 4 September 2017 (JD 2458000.5) 0 132.05 yr (48,233 days) 3.2539 AU 2.1165 AU 2.6852 AU 0.2118 4.40 yr (1,607 days) 324.65° 0.2240 ms / day 12.028° 128.92° 264.50° 39.04 9.79 km52.393 0.196 km53.26 0.62 km54.551 1.535 km54.56 km (taken)54.564 km62.34 21.46 km65.29 0.80 km 4.714793 h4.712 hlcdb-CALL-20114.715 h4.7152 0.0002 h7.87 0.03 h(poor) 0.046 0.0040.05 0.030.0657 0.01450.07470.076 0.0020.10 0.05 Tholen GC:SMASS XeCPXB–V 0.725U–B 0.425 9.759.75 0.059.899.9510.22 0.25 166 Rhodope is a dark background asteroid from the central region of the asteroid belt, approximately 55 kilometers in diameter. It was discovered on 15 August 1876, by German–American astronomer Christian Peters at the Litchfield Observatory in Clinton, New York, United States. The asteroid was named after Queen Rhodope from Greek mythology. Orbit and classification Rhodope is a non-family asteroid of the main belt's background population, when applying the Hierarchical Clustering Method to its proper orbital elements. Alternatively, it has been dynamically assigned to the stony Eunomia family (502), which have a different spectral class and albedo than that of Rhodope though.23 The asteroid has also been considered a member of the Adeona family.October 2017 Rhodope orbits the Sun in the central asteroid belt at a distance of 2.1–3.3 AU once every 4 years and 5 months (1,607 days). Its orbit has an eccentricity of 0.21 and an inclination of 12° with respect to the ecliptic. The body's observation arc begins with the first recorded observation by the MPC at Vienna Observatory on 10 September 1885, or more than 9 years after its official discovery observation at Clinton. On 19 October 2005, it was observed occulting the prominent star Regulus from Vibo Valentia, Italy. Physical characteristics Spectral type Rhodopes spectral type is ambiguous. In the Tholen classification, the noisy spectrum is closest to a G-type and somewhat similar to a common C-type (GC:). In the SMASS classification, it is an Xe-subtype, that transitions from the X-type to the very bright E-type. In addition, Rhodope has also been characterized as a primitive P-type and carbonaceous C-type by the Wide-field Infrared Survey Explorer (WISE) and by Pan-STARRS photometric survey, respectively. Rotation period Two well-defined rotational lightcurves of Rhodope were obtained from photometric observations by French astronomer Matthieu Conjat and by an anonymous observer of the Collaborative Asteroid Lightcurve Link (CALL). Lightcurve analysis gave a consolidated rotation period of 4.715 hours with a brightness variation of 0.35 to 0.36 magnitude (U=3/3).lcdb-CALL-2011 The result supersedes a period of 7.87 hours measured by Alan Harris in the early 1980s (U=1). Poles In 2013, the asteroid's lightcurve was also modeled from combined dense and sparse photometry. It gave a concurring sidereal period of 4.714793 hours. The modelling also determined two spin axis of (345.0°, −22.0°) and (173.0°, −3.0°) in ecliptic coordinates (λ, β). Diameter and albedo According to the surveys carried out by the Japanese Akari satellite and the NEOWISE mission of NASA's WISE telescope, Rhodope measures between 39.04 and 65.29 kilometers in diameter and its surface has an albedo between 0.046 and 0.10. CALL adopts Petr Pravec's revised WISE-data, that is, an albedo of 0.0747 and a diameter of 54.56 kilometers based on an absolute magnitude of 9.75. Naming This minor planet was named from Greek mythology after Queen Rhodope of Thrace, wife of King Haemus and attendant of Artemis, also see 105 (105). In vanity, Rhodope and Haemus compared themselves to the gods Zeus and Hera, see 5731 (5731) and 103 (103), who punished the couple by changing them into the Rhodope Mountains and Balkan Mountains, respectively. Notes lcdb-CALL-2011 Anonymous lightcurve –CALL-2011 (web) web: rotation period 4.712 hours with a brightness amplitude of 0.35 mag. Quality code of 3. Summary figures for (166) Rhodope at LCDB References 30em 2017-10-01 last obs. JPL Small-Body Database Browser: 166 Rhodope https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2000166 Jet Propulsion Laboratory 28 October 2017 Schmadel Lutz D. Dictionary of Minor Planet Names (166) Rhodope Springer Berlin Heidelberg 30 2007 978-3-540-00238-3 10.1007/978-3-540-29925-7_167 166 Rhodope Minor Planet Center https://www.minorplanetcenter.net/db_search/show_object?object_id=166 28 October 2017 Asteroids and comets rotation curves – (166) Rhodope Behrend Raoul Geneva Observatory http://obswww.unige.ch/~behrend/page1cou.html#000166 28 October 2017 3 December 2002 https://web.archive.org/web/20021203194843/http://obswww.unige.ch/~behrend/page1cou.html#000166 dead 6 Joseph R. Masiero T. Grav A. K. Mainzer C. R. Nugent J. M. Bauer R. Stevenson S. 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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) 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 A. W. Harris J. W. Young E. Bowell D. J. Tholen November 1999 Asteroid Lightcurve Observations from 1981 to 1983 Icarus 142 1 173–201 1999Icar..142..173H 10.1006/icar.1999.6181 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 53493339 6 J. Hanus J. Durech M. Broz A. Marciniak B. D. Warner F. Pilcher R. Stephens R. Behrend B. Carry D. Capek P. Antonini M. Audejean K. Augustesen E. Barbotin P. Baudouin A. Bayol L. Bernasconi W. Borczyk J.-G. Bosch E. Brochard L. Brunetto S. Casulli A. Cazenave S. Charbonnel B. Christophe F. Colas J. Coloma M. Conjat W. Cooney H. Correira V. Cotrez A. Coupier R. Crippa M. Cristofanelli Ch. Dalmas C. Danavaro C. Demeautis T. Droege R. Durkee N. Esseiva M. Esteban M. Fagas G. Farroni M. Fauvaud S. Fauvaud F. Del Freo L. Garcia S. Geier C. Godon K. Grangeon H. Hamanowa H. Hamanowa N. Heck S. Hellmich D. Higgins R. Hirsch M. Husarik T. Itkonen O. Jade K. Kaminski P. Kankiewicz A. Klotz R. A. Koff A. Kryszczynska T. Kwiatkowski A. Laffont A. Leroy J. Lecacheux Y. Leonie C. Leyrat F. Manzini A. Martin G. Masi D. Matter J. Michalowski M. J. Michalowski T. Michalowski J. Michelet R. Michelsen E. Morelle S. Mottola R. Naves J. Nomen J. Oey W. Ogloza A. Oksanen D. Oszkiewicz Pä ä kkö P. nen M. Paiella H. Pallares J. Paulo M. Pavic B. Payet M. Polinska D. Polishook R. Poncy Y. Revaz C. Rinner M. Rocca A. Roche D. Romeuf R. Roy H. Saguin P. A. Salom S. Sanchez G. Santacana T. Santana-Ros J.-P. Sareyan K. Sobkowiak S. Sposetti D. Starkey R. Stoss J. Strajnic J.-P. Teng B. Trégon A. Vagnozzi F. P. Velichko N. Waelchli K. Wagrez H. Wücher March 2013 Asteroids' physical models from combined dense and sparse photometry and scaling of the YORP effect by the observed obliquity distribution Astronomy and Astrophysics 551 16 2013A&A...551A..67H 10.1051/0004-6361/201220701 1301.6943 118627434 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/20241208174218/http://obswww.unige.ch/~behrend/page_cou.html 8 December 2024 – Observatoire de Genève, Raoul Behrend Discovery Circumstances: Numbered Minor Planets (1)-(5000) – Minor Planet Center 166 165 Loreley 166 167 Urda 000166 Category:Discoveries by Christian Peters Category:Named minor planets 000166 000166 18760815