1181 Lilith

Metallic main-belt asteroid October 2019 yes 1181 Lilith #D6D6D6 24px (astrological) 11 February 1927 B. Jekhovsky Algiers Obs. (1181) Lilith 1927 CQ1925 QF1943 WC1953 CA1964 PGA914 BA Lili Boulanger(French composer) main-belt(middle)background 31 May 2020 (JD 2459000.5) 0 89.50 yr (32,689 d) 3.1851 AU 2.1457 AU 2.6654 AU 0.1950 4.35 yr (1,589 d) 219.56° 0.2265 ms / day 5.6012° 260.70° 156.05° 20.492 0.276 km 15.04 0.01 h 0.106 0.011 SMASS X 11.3 1181 Lilith (prov. designation: 1927 CQ) is a metallic asteroid from the middle region of the asteroid belt, approximately 23 km mi off 2 us in diameter. It was discovered on 11 February 1927, by Russian–French astronomer Benjamin Jekhowsky at Algiers Observatory in Algeria, Northern Africa, and named after French composer Lili Boulanger. Classification and orbit Lilith is a non-family asteroid of the main belt's background population when applying the hierarchical clustering method to its proper orbital elements. It orbits the Sun in the middle asteroid belt at a distance of 2.1–3.2 AU once every 4 years and 4 months (1,587 days). Its orbit has an eccentricity of 0.20 and an inclination of 6° with respect to the ecliptic. First observed as A914 BA at Simeiz Observatory in 1914, Liliths observation arc begins 7 years after its official discovery observation, with its first used observation made at Konkoly Observatory in 1934. Naming This minor planet was named by Jekhowsky for Marie Juliette Boulanger (1893–1918), nicknamed Lili. She was the younger sister of Nadia Boulanger and daughter of Ernest Boulanger. Physical characteristics Lilith is an X-type asteroid in the Bus–Binzel SMASS taxonomy. It has also been classified as a P-type asteroid by NASA's space-based Wide-field Infrared Survey Explorer (WISE). Rotation period In February 2014, a rotational lightcurve of Lilith was obtained by Italian astronomer Andrea Ferrero at the Bigmuskie Observatory B88 in Mombercelli, Italy. The photometric observations rendered a period of 15.04 0.01 hours with a brightness amplitude of 0.11 in magnitude (U=2). Diameter and albedo According to NASA's WISE telescope with its subsequent NEOWISE mission, Lilith measures (20.492 0.276) kilometers in diameter and its surface has an albedo of (0.106 0.011), while the Collaborative Asteroid Lightcurve Link assumes an albedo of 0.10, and calculates a diameter of 24.2 kilometers with an absolute magnitude of 11.2. The WISE team also published an alternative mean diameter (22.133 0.254 km) and an albedo of (0.116 0.022). References 30em 2020-06-17 last obs. JPL Small-Body Database Browser: 1181 Lilith (1927 CQ) https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2001181 Jet Propulsion Laboratory 21 July 2020 Dictionary of Minor Planet Names Schmadel Lutz D. Springer Berlin Heidelberg (1181) Lilith 99 2007 978-3-540-00238-3 10.1007/978-3-540-29925-7_1182 1181 Lilith (1927 CQ) Minor Planet Center https://www.minorplanetcenter.net/db_search/show_object?object_id=1181 21 July 2020 1181 25 May 2016 Ferrero, Andrea July 2014 Period Determination of Six Main Belt Asteroids http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2014MPBu...41..184F The Minor Planet Bulletin 41 3 184–185 1052-8091 2014MPBu...41..184F 25 May 2016 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 http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2014ApJ...791..121M The Astrophysical Journal 791 2 11 2014ApJ...791..121M 10.1088/0004-637X/791/2/121 1406.6645 9 December 2016 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 2016PDSS..247.....M 21 July 2020 Asteroid 1181 Lilith – Nesvorny HCM Asteroid Families V3.0 Small Bodies Data Ferret https://sbntools.psi.edu/ferret/SimpleSearch/results.action?targetName=1181+Lilith 21 July 2020 21 July 2020 https://web.archive.org/web/20200721171749/https://sbntools.psi.edu/ferret/SimpleSearch/results.action?targetName=1181+Lilith dead Asteroid 1181 Lilith – Proper Elements AstDyS-2, Asteroids – Dynamic Site https://newton.spacedys.com/astdys/index.php?pc=1.1.6&n=1181 21 July 2020 Zappalà V. Bendjoya Ph. Cellino A. Farinella P. Froeschle C. 1997 Asteroid Dynamical Families https://sbnarchive.psi.edu/pds3/non_mission/EAR_A_5_DDR_FAMILY_V4_1/data/family.tab NASA Planetary Data System EAR-A-5-DDR-FAMILY-V4.1 21 July 2020 (PDS main page) 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 1181 1180 Rita 1181 1182 Ilona 001181 Category:Discoveries by Benjamin Jekhowsky Category:Named minor planets 001181 19270211