1170 Siva

Asteroid October 2019 yes 1170 Siva #FA8072 001170-asteroid shape model (1170) Siva.png Modelled shape of Siva from its lightcurve 29 September 1930 E. Delporte Uccle Obs. (1170) Siva 1930 SQ Shiva (Hindu deity) Mars-crosserPhocaea 16 February 2017 (JD 2457800.5) 0 85.19 yr (31,116 days) 3.0245 AU 1.6291 AU 2.3268 AU 0.2998 3.55 yr (1,296 days) 94.741° 0.2777 ms / day 22.184° 0.9218° 59.391° 0.7263 AU 0.3760 AU 7.68 2.18 km10.37 0.8 km (IRAS:2)12.13 0.89 km 3.5 h4.98 hLCDB-CALL-20115.22 0.01 h 0.128 0.0200.1751 0.032 (IRAS:2)0.40 0.16 B–V = 0.864U–B = 0.452Tholen = SS 12.0012.1812.43 1170 Siva, provisional designation 1930 SQ, is a stony Phocaea asteroid and large Mars-crosser from the innermost regions of the asteroid belt, approximately 10 kilometers in diameter. It was discovered on 29 September 1930, by Belgian astronomer Eugène Delporte at Uccle Observatory in Belgium, and later named after the Hindu deity Shiva. Orbit and classification Siva is a Mars-crossing asteroid, as it crosses the orbit of Mars at 1.666 AU. It is also a member of the Phocaea family (701). It orbits the Sun at a distance of 1.6–3.0 AU once every 3 years and 7 months (1,296 days). Its orbit has an eccentricity of 0.30 and an inclination of 22° with respect to the ecliptic. Siva was first observed at the Japanese Kwasan Observatory, 3 days prior to is discovery. The body's observation arc begins at Uccle, two weeks after its official discovery observation. Naming This minor planet is named after Shiva, a Hindu deity often depicted with a third eye on his forehead and with a snake around his neck. Naming citation was first mentioned in The Names of the Minor Planets by Paul Herget in 1955 (H 109). Physical characteristics In the Tholen taxonomy, Siva is a stony S-type asteroid. Rotation period Only fragmentary lightcurves of Siva have been obtained since 2001. They gave a rotation period between 3.5 and 5.22 hours with a small change in brightness of 0.04 to 0.1 magnitude (U=1/n.a./1).LCDB-CALL-2011 As of 2017, no secure period has been published. Diameter and albedo According to the surveys carried out by the Infrared Astronomical Satellite IRAS, the Japanese Akari satellite, and NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, Siva measures between 7.68 and 12.13 kilometers in diameter, and its surface has an albedo between 0.128 and 0.40. The Collaborative Asteroid Lightcurve Link adopts the results obtained by IRAS, that is, an albedo of 0.1751 and a diameter of 10.37 kilometers with an absolute magnitude of 12.43. Siva belongs to the brightest known Mars-crossers. Notes LCDB-CALL-2011 CALL (2011) web: rotation period 4.98 hours with a brightness amplitude of 0.1 mag. Summary figures at http://www.minorplanet.info/PHP/generateOneAsteroidInfo.php?AstInfo=1170%7CSiva Collaborative Asteroid Lightcurve Link (CALL) for (1170) Siva References 30em 2016-01-21 last obs. JPL Small-Body Database Browser: 1170 Siva (1930 SQ) https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2001170 Jet Propulsion Laboratory 26 January 2017 Dictionary of Minor Planet Names – (1170) Siva Schmadel Lutz D. Springer Berlin Heidelberg 98 2007 978-3-540-00238-3 10.1007/978-3-540-29925-7_1171 (1170) Siva 1170 Siva (1930 SQ) Minor Planet Center https://www.minorplanetcenter.net/db_search/show_object?object_id=1170 26 January 2017 Asteroids and comets rotation curves – (1170) Siva Behrend Raoul Geneva Observatory http://obswww.unige.ch/~behrend/page3cou.html#001170 26 January 2017 3 December 2002 https://web.archive.org/web/20021203214643/http://obswww.unige.ch/~behrend/page3cou.html#001170 dead JPL Small-Body Database Search Engine: orbital class (MCA) and H < 12.5 (mag) JPL Solar System Dynamics http://ssd.jpl.nasa.gov/sbdb_query.cgi?obj_group=all;obj_kind=all;obj_numbered=all;ast_orbit_class=MCA;OBJ_field=0;ORB_field=0;c1_group=OBJ;c1_item=Ai;c1_op=%3C;c1_value=12.5;table_format=HTML;max_rows=50;format_option=comp;c_fields=AcBhBgBjBiBnBsAi;.cgifields=format_option;.cgifields=obj_kind;.cgifields=obj_group;.cgifields=obj_numbered;.cgifields=ast_orbit_class;.cgifields=table_format;.cgifields=com_orbit_class&query=1&c_sort=AiA Asteroid 1170 Siva – Nesvorny HCM Asteroid Families V3.0 Small Bodies Data Ferret https://sbntools.psi.edu/ferret/SimpleSearch/results.action?targetName=1170+Siva#Asteroid%201170%20SivaEAR-A-VARGBDET-5-NESVORNYFAM-V3.0 26 October 2019 1170 26 January 2017 E. F. Tedesco P. V. Noah M. Noah S. D. Price October 2004 IRAS Minor Planet Survey V6.0 https://sbnarchive.psi.edu/pds3/iras/IRAS_A_FPA_3_RDR_IMPS_V6_0/data/diamalb.tab NASA Planetary Data System 12 IRAS-A-FPA-3-RDR-IMPS-V6.0 2004PDSS...12.....T 22 October 2019 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 C. R. Nugent A. Mainzer J. Bauer R. M. Cutri E. A. Kramer T. Grav J. Masiero S. Sonnett E. L. Wright September 2016 NEOWISE Reactivation Mission Year Two: Asteroid Diameters and Albedos The Astronomical Journal 152 3 12 2016AJ....152...63N 10.3847/0004-6256/152/3/63 1606.08923 free 6 P. Székely L. L. Kiss Gy. M. Szabó K. Sárneczky B. Csák M. Váradi Sz. Mészáros August 2005 CCD photometry of 23 minor planets http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2005P&SS...53..925S Planetary and Space Science 53 9 925–936 2005P&SS...53..925S 10.1016/j.pss.2005.04.006 astro-ph/0504462 119361591 26 January 2017 B. Carry E. Solano S. Eggl F. E. DeMeo April 2016 Spectral properties of near-Earth and Mars-crossing asteroids using Sloan photometry http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2016Icar..268..340C Icarus 268 340–354 2016Icar..268..340C 10.1016/j.icarus.2015.12.047 26 January 2017 1601.02087 119258489 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 1170 1169 Alwine 1170 1171 Rusthawelia 001170 001170 Category:Discoveries by Eugène Joseph Delporte Category:Named minor planets 001170 19300929