179 Klytaemnestra

Main-belt asteroid April 2018 yes 179 Klytaemnestra #D6D6D6 000179-asteroid shape model (179) Klytaemnestra.png 3D convex shape model of 179 Klytaemnestra J. C. Watson Ann Arbor Obs. 11 November 1877 (179) Klytaemnestra A877 VC k l ɪ t ᵻ m ' n ɛ s t r ə'Clytemnestra' in Noah Webster (1884) A Practical Dictionary of the English Language Clytemnestra(Greek mythology) main-belt(outer)Telramund 23 March 2018 (JD 2458200.5) 0 119.12 yr (43,507 d) 3.3085 AU 2.6356 AU 2.9720 AU 0.1132 5.12 yr (1,871 d) 194.50° 0.1924 ms / day 7.8163° 251.91° 103.64° 64.25 0.79 km69.946 0.518 km72.786 0.799 km75.02 3.21 km77.69 1.4 km90.17 1.53 km 2.49 1.19 17 kg 1.12 0.55 g/cm3 11.13 0.02 h11.173 h11.17342 0.00005 h 0.119 0.0180.1609 0.0060.1833 0.05780.198 0.0110.245 0.007 Tholen SSMASS SkB–V 0.832U–B 0.408 8.158.22 179 Klytaemnestra is a stony Telramund asteroid from the outer regions of the asteroid belt, approximately 77 km mi off 2 us in diameter. It was discovered on 11 November 1877, by Canadian-American astronomer James Craig Watson at the old Ann Arbor Observatory in Michigan, United States. It was his last discovery three years before his death. The transitional S-type asteroid has a rotation period of 11.17 hours. It was named after Clytemnestra from Greek mythology. Orbit and classification Together with asteroid 9506 Telramund, Klytaemnestra is the largest members of the Telramund family (614), a mid-sized family of stony asteroids in the outer main belt, which is also known as the Klytaemnestra family.23 It orbits the Sun in the outer main-belt at a distance of 2.6–3.3 AU once every 5 years and 1 month (1,871 days; semi-major axis of 2.97 AU). Its orbit has an eccentricity of 0.11 and an inclination of 8° with respect to the ecliptic. The body's observation arc begins at Lick Observatory in February 1899, more than 21 years after to its official discovery observation at Ann Arbor. Physical characteristics In the Tholen classification, Klytaemnestra is a common stony S-type asteroid, while in the SMASS classification it is a Sk-subtype, that transitions between the S- and K-type asteroids. Rotation period and poles Photometric observations of this asteroid at the Oakley Observatory in Terre Haute, Indiana, during 2006 gave a light curve with a period of 11.13 ± 0.02 hours and a brightness variation of 0.55 ± 0.02 in magnitude (U=2). A better rated lightcurve, already obtained by Alan Harris in October 1979, gave a period of 11.173 hours with an amplitude of 0.35 (U=3). A modeled lightcurve using photometric data from a larger international collaboration was published in 2016. It gave a period of 11.17342 hours, identical to the 1979-observations by Harris, as well as two spin axes at (65.0°, −6.0°) and (248.0°, −9.0°) 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, Klytaemnestra measures between 64.25 and 90.17 kilometers in diameter and its surface has an albedo between 0.119 and 0.245. The Collaborative Asteroid Lightcurve Link adopts the results obtained by IRAS, that is, an albedo of 0.1609 and a diameter of 77.69 kilometers based on an absolute magnitude of 8.15. Naming This minor planet was named from Greek mythology after Clytemnestra, the daughter of Leda and the Spartan king Tyndareus. She was the wife of Agamemnon and the mother Orestes, Electra, Iphigenia and Chrysothemis. Clytemnestra and her lover Aegisthus murdered Agamemnon on his return from the Trojan War. The minor planets 38 (38), 112 (112), 130 (130), 911 (911), 637 (637) and 8125 (8125) were named after these mythological figures. References 30em 2018-03-27 last obs. 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Carry December 2012 Density of asteroids Planetary and Space Science 73 1 98–118 10.1016/j.pss.2012.03.009 2012P&SS...73...98C 1203.4336 119226456 See Table 1. Asteroid 179 Klytaemnestra Small Bodies Data Ferret https://sbntools.psi.edu/ferret/SimpleSearch/results.action?targetName=179+Klytaemnestra 24 October 2019 20 August 2020 https://web.archive.org/web/20200820124020/https://sbntools.psi.edu/ferret/SimpleSearch/results.action?targetName=179+Klytaemnestra dead 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 119280014 179 18 April 2018 6 Joseph R. Masiero A. K. Mainzer T. Grav J. M. Bauer R. M. Cutri C. Nugent M. S. 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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 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 Discovery Circumstances: Numbered Minor Planets (1)-(5000) – Minor Planet Center 179 178 Belisana 179 180 Garumna 000179 Category:Discoveries by James Craig Watson Category:Named minor planets 000179 000179 18771111 Category:Clytemnestra