124 Alkeste

Main-belt asteroid September 2018 yes #D6D6D6 124 Alkeste 124 Alkeste.png Christian Heinrich Friedrich Peters 23 August 1872 (124) Alkeste A872 QA æ l ' k ɛ s t iː'Alceste' in Noah Webster (1884) A Practical Dictionary of the English Language Alcestis Main belt 31 July 2016 (JD 2457600.5) 2.63022 AU Gm on 2.43166 AU Gm on 2.8288 AU Gm on on 0.075491 4.27 yr (1558.1 d) 2.9573° 187.991° 61.413° 343.779° 18.34 km/s 88.65 1.65 km76.36 1.7 km 4.717 kg 0.0214 m/s² 0.0404 km/s 9.921 h d on on S 8.11, 8.09 0.1728 0.008 ~172 K 0.23106 ms / day 143.65 yr (52468 d) 0 1.41927 AU Gm on 2.17851 AU Gm on 3.394 124 Alkeste is a main-belt asteroid, and it is an S-type (siliceous) in composition. C.H.F. Peters discovered the asteroid on August 23, 1872, from the observatory at Hamilton College, New York State. The name was chosen by Adelinde Weiss, wife of the astronomer Edmund Weiss, and refers to Alcestis, a woman in Greek mythology.Schmadel Lutz D. Dictionary of Minor Planet Names https://books.google.com/books?id=KWrB1jPCa8AC&pg=PA27 2003 Springer Science & Business Media 978-3-540-00238-3 27 thumb|left|The observed shape of Alkeste from a stellar occultation in 2003 A 20 chord stellar occultation by Alkeste was observed when the asteroid passed in front of the third magnitude star Beta Virginis on June 24, 2003. The event was visible from Australia and New Zealand. The asteroid has been observed in 3 more stellar occultation events.https://sbn.psi.edu/pds/resource/occ.html Asteroid Data Sets sbn.psi.edu 2018-05-19 Photometric observations of this asteroid in 2016 produced lightcurves indicating a rotation period of 9.9 hours with an amplitude variation of 0.18 in magnitude. This result matched previous determinations of the spin rate. The lightcurve was found to vary over the observation period as the viewing angle changed, suggesting the shadowing of topographic features. left References Three Asteroids with Changing Lightcurves: 124 Alkeste, 465 Alekto, and 569 Misa Pilcher Frederick The Minor Planet Bulletin 43 4 296–299 October 2016 2016MPBu...43..296P . Occultation by (124) Alkeste - 2003 Jun 24 Occultation Section, Royal Astronomical Society of New Zealand http://www.occultations.org.nz/planet/2003/updates/030624au.htm May 23, 2003 . 2018-01-19 Donald K. Yeomans 124 Alkeste JPL Small-Body Database Browser NASA Jet Propulsion Laboratory https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=124 12 May 2016 . Warner Brian D. Initial Results of a Dedicated H-G Project The Minor Planet Bulletin 34 113–119 December 2007 2007MPBu...34..113W . External links 124 123 Brunhild 124 125 Liberatrix 000124 Category:Discoveries by Christian Peters Category:Named minor planets 000124 000124 000124 18720823