157 Dejanira

Main-belt asteroid May 2018 yes #D6D6D6 157 Dejanira 157Dejanira (Lightcurve Inversion).png A three-dimensional model of 157 Dejanira based on its lightcurve https://minorplanetcenter.net//iau/lists/NumberedMPs.html Discovery Circumstances: Numbered Minor Planets The International Astronomical Union Minor Planet Center 17 March 2021 A. Borrelly 1 December 1875 (157) Dejanira A875 XA; 1904 VB;1978 TS 1 d ɛ dʒ ə ' n aɪr əBenjamin Smith (1903) The Century Dictionary and Cyclopedia Main belt http://ftp.lowell.edu/pub/elgb/astorb.html astorb The Asteroid Orbital Elements Database Lowell Observatory 31 July 2016 (JD 2457600.5) 2.58161 AU Gm on 2.07801 AU Gm on 3.0852 AU Gm on on 0.19507 4.15 yr (1515.1 d) 12.160° 62.070° 312.135° 18.36 km/s 19.1 km 7.315 kg 2.0 g/cm3 0.0053 m/s² 0.0101 km/s 11.2 0.10 ~173 K 46.282° 0.23761 ms / day 111.13 yr (40590 d) 0 15.825 h d on on 1.11241 AU Gm on 2.16656 AU Gm on 3.366 157 Dejanira is a main belt asteroid that was discovered by Alphonse Borrelly on 1 December 1875, and named after the warlike princess Deianira in Greek mythology (Δηιάνειρα in Greek). The Dejanira family of asteroids is named after it. Photometric observations of this asteroid were made in early 2009 at the Organ Mesa Observatory in Las Cruces, New Mexico. The resulting light curve shows a synodic rotation period of 15.825 ± 0.001 hours. References Donald K. Yeomans 157 Dejanira JPL Small-Body Database Browser NASA Jet Propulsion Laboratory https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=157 https://web.archive.org/web/20200803083831/https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=157 dead 3 August 2020 12 May 2016 . Frederick Pilcher Rotation Period Determinations for 120 Lachesis, 131 Vala 157 Dejanira, and 271 Penthesilea The Minor Planet Bulletin 36 3 100–102 July 2009 2009MPBu...36..100P . External links Lightcurve plot of 157 Dejanira, Palmer Divide Observatory, B. D. Warner (2005) 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 157 156 Xanthippe 157 158 Koronis 000157 000157 Category:Discoveries by Alphonse Borrelly Category:Named minor planets 18751201