1373 Cincinnati

Asteroid May 2020 yes 1373 Cincinnati #D6D6D6 E. Hubble Mount Wilson Obs. 30 August 1935 (1373) Cincinnati 1935 QN Cincinnati Observatory main-belt(outer)CybeleACO 27 April 2019 (JD 2458600.5) 0 82.62 yr (30,176 d) 4.4958 AU 2.3457 AU 3.4208 AU 0.3143 6.33 yr (2,311 d) 98.044° 0.1558 ms / day 38.936° 297.47° 99.148° 2.7190 19.448 0.175 km19.751 0.165 km22.16 1.66 km 5.2834 0.0002 h 0.1190.15180.155 SMASS X kM 11.2011.5 1373 Cincinnati, provisional designation 1935 QN, is an asteroid in a comet-like orbit from the Cybele region, located at the outermost rim of the asteroid belt, approximately 20 km mi off 2 us in diameter. It was the only asteroid discovery made by famous American astronomer Edwin Hubble, while observing distant galaxies at Mount Wilson Observatory in California on 30 August 1935. The rather spherical X-type asteroid has a rotation period of 5.3 hours. It was named for the Cincinnati Observatory. Orbit and classification Cincinnati orbits the Sun in the outermost asteroid belt at a distance of 2.3–4.5 AU once every 6 years and 4 months (2,311 days; semi-major axis of 3.42 AU). Its orbit has an eccentricity of 0.31 and an inclination of 39° with respect to the ecliptic. The body's observation arc begins with its official discovery observation at Mount Wilson in August 1935. Cincinnati, a non-family asteroid of the main belt's background population, is located in the orbital region of the Cybele asteroids, the last outpost of an extended asteroid belt beyond the Hecuba-gap asteroids. Due to its high inclination, and contrary to all other Cybele asteroids, Cincinnati is the only one that is above the center of the ν6 secular resonance with Saturn.2 The asteroid's high inclination and eccentricity also results in a Tisserand's parameter (TJupiter) of 2.719, which makes it a true asteroid in cometary orbit (ACO) for having a TJupiter value below 3. Naming Recommended by the Minor Planet Center, this minor planet was named after the Cincinnati Observatory, whose staff provided most of the orbit computations. (From 1947 to 1978, the Minor Planet Center was located in Cincinnati.) The Minor Planet Center Brian G. Marsden Brian G. Marsden Celestial Mechanics and Dynamical Astronomy 22 63–71 July 1980 1 1980CeMec..22...63M 10.1007/BF01228757 119526916 The official 1373 naming citation was published by the Minor Planet Center on 31 January 1962 (M.P.C. 2116). Physical characteristics In the SMASS classification, Cincinnati is a Xk-type, a subtype that transitions from the X-type to the uncommon K-type asteroids, while the Wide-field Infrared Survey Explorer classifies it as a metallic M-type asteroid. By 2014, Cincinnati is the only of three Cybele asteroids for which a spectral type has been determined; the other two are 522 Helga and 692 Hippodamia, an X- and S-type, respectively.3 Rotation period In January 2018, a rotational lightcurve of Cincinnati was obtained from photometric observations by Henk de Groot. Lightcurve analysis gave a rotation period of 5.2834 0.0002 hours and a brightness variation of 0.10 magnitude (U=2+). The low brightness amplitude is indicative that is asteroid is rather spherical than elongated in shape. Alternative period determinations were made by French amateur astronomer René Roy (5.274 h; Δ0.21 mag) in August 2004 (U=2). Two more lightcurves were obtained by Brian Warner at this Palmer Divide Observatory in Colorado, United States, in August 2004 and August 2010, who measured a period of 4.930 and 5.28 hours with an amplitude of 0.11 and 0.14 magnitude, respectively.lightcurve-plot-Warner Diameter and albedo According to the survey carried out by the NEOWISE mission of NASA's WISE telescope, Cincinnati measures between 19.4 and 19.8 kilometers in diameter and its surface has an albedo of 0.15–0.16, while the Japanese Akari satellite determined a diameter of 22.16 kilometers with an albedo of 0.12. The Collaborative Asteroid Lightcurve Link assumes a standard albedo for a carbonaceous asteroid of 0.057 and calculates a diameter of 27.9 kilometers based on an absolute magnitude of 11.5. Notes lightcurve-plot-Warner Lightcurve plot of (1373) Cincinnati, Palmer Divide Observatory 716, B. D. Warner (2010). Summary figures at the LCDB. References 30em PRIMASS visits Hilda and Cybele groups De Prá M. N. Pinilla-Alonso N. Carvano J. M. Licandro J. Campins H. Mothé-Diniz T. De León J. Alí-Lagoa V. 1 Icarus 311 35–51 September 2018 1711.02071 2018Icar..311...35D 10.1016/j.icarus.2017.11.012 119383924 . 2018-04-23 last obs. JPL Small-Body Database Browser: 1373 Cincinnati (1935 QN) https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2001373 Jet Propulsion Laboratory 13 December 2018 1373 Cincinnati (1935 QN) Minor Planet Center https://www.minorplanetcenter.net/db_search/show_object?object_id=1373 13 December 2018 Dictionary of Minor Planet Names – Addendum to Fifth Edition (2006–2008) Appendix – Publication Dates of the MPCs Schmadel Lutz D. Springer Berlin Heidelberg 221 978-3-642-01964-7 10.1007/978-3-642-01965-4 2009 2009dmpn.book.....S https://cds.cern.ch/record/1339661 Asteroids and comets rotation curves – (1373) Cincinnati Behrend Raoul Geneva Observatory http://obswww.unige.ch/~behrend/page4cou.html#001373 13 December 2018 3 August 2003 https://web.archive.org/web/20030803183423/http://obswww.unige.ch/~behrend/page4cou.html#001373 dead Asteroid (1373) Cincinnati – Proper elements AstDyS-2, Asteroids – Dynamic Site https://newton.spacedys.com/astdys/index.php?n=1373&pc=1.1.6 25 May 2018 Asteroid 1373 Cincinnati – Asteroid Taxonomy V6.0 Small Bodies Data Ferret https://sbntools.psi.edu/ferret/SimpleSearch/results.action?targetName=1373+Cincinnati#Asteroid%201373%20CincinnatiEAR-A-5-DDR-TAXONOMY-V6.0 29 October 2019 16 December 2018 https://web.archive.org/web/20181216032021/https://sbntools.psi.edu/ferret/SimpleSearch/results.action?targetName=1373+Cincinnati#Asteroid%201373%20CincinnatiEAR-A-5-DDR-TAXONOMY-V6.0 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 The Astrophysical Journal 791 2 11 2014ApJ...791..121M 10.1088/0004-637X/791/2/121 1406.6645 119293330 J. Licandro A. Alvarez-Candal J. de León N. Pinilla-Alonso D. Lazzaro H. Campins April 2008 Spectral properties of asteroids in cometary orbits https://www.aanda.org/articles/aa/pdf/2008/15/aa8340-07.pdf Astronomy and Astrophysics 481 3 861–877 2008A&A...481..861L 10.1051/0004-6361:20078340 13 December 2018 free V. Carruba D. Nesvorný S. Aljbaae M. E. Huaman July 2015 Dynamical evolution of the Cybele asteroids Monthly Notices of the Royal Astronomical Society 451 1 244–256 2015MNRAS.451..244C 10.1093/mnras/stv997 free 1505.03745 1373 13 December 2018 6 A. K. Mainzer J. M. Bauer R. M. Cutri T. Grav E. A. Kramer J. R. Masiero C. R. Nugent S. M. Sonnett R. A. Stevenson E. L. Wright June 2016 NEOWISE Diameters and Albedos V1.0 https://sbnarchive.psi.edu/pds3/non_mission/EAR_A_COMPIL_5_NEOWISEDIAM_V1_0/data/neowise_mainbelt.tab NASA Planetary Data System 247 EAR-A-COMPIL-5-NEOWISEDIAM-V1.0 2016PDSS..247.....M 13 December 2018 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 free (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 (catalog) Warner, Brian D. March 2005 Lightcurve analysis for asteroids 242, 893, 921, 1373, 1853, 2120, 2448 3022, 6490, 6517, 7187, 7757, and 18108 The Minor Planet Bulletin 32 1 4–7 1052-8091 2005MPBu...32....4W Warner, Brian D. January 2011 Lightcurve Analysis at the Palmer Divide Observatory: 2010 June–September The Minor Planet Bulletin 38 1 25–31 1052-8091 2011MPBu...38...25W 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 1373 1372 Haremari 1373 1374 Isora 001373 Category:Named minor planets 001373 19350830