1714 Sy

Main-belt asteroid October 2019 yes 1714 Sy #D6D6D6 25 July 1951 L. Boyer Algiers Obs. (1714) Sy 1951 OA1949 YM1950 DE 11951 NM Frédéric Sy (astronomer) main-belt(middle) 4 September 2017 (JD 2458000.5) 0 67.24 yr (24,559 days) 2.9621 AU 2.1732 AU 2.5677 AU 0.1536 4.11 yr (1,503 days) 50.188° 0.2396 ms / day 7.9715° 300.91° 321.00° 12.39 km (calculated)13.998 0.881 km 0.157 0.0340.20 (assumed) LS 11.85 0.2911.9 1714 Sy, provisional designation 1951 OA, is a stony asteroid from the central regions of the asteroid belt, approximately 13 kilometers in diameter. It was discovered on 25 July 1951, by French astronomer Louis Boyer at Algiers Observatory in Algeria, North Africa, and named after French astronomer and orbit computer Frédéric Sy. Orbit Sy orbits the Sun in the central main-belt at a distance of 2.2–3.0 AU once every 4 years and 1 month (1,503 days). Its orbit has an eccentricity of 0.15 and an inclination of 8° with respect to the ecliptic. It was first identified as 1949 YM at Goethe Link Observatory in 1948, extending the body's observation arc by 3 years prior to its official discovery observation at Algiers. Physical characteristics PanSTARRS large-scale survey characterized Sy as a L-type asteroid, a rare subtype which falls into the broader complex of stony S-type asteroids. Diameter and albedo According to the survey carried out by NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, Sy measures 13.998 kilometers in diameter, and its surface has an albedo of 0.157, while the Collaborative Asteroid Lightcurve Link assumes a standard albedo for stony asteroids of 0.20 and calculates a diameter of 12.39 kilometers with on an absolute magnitude of 11.9. Photometry In March 2012, photometric observations at the Oakley Southern Sky Observatory (E09), Australia, included this asteroid as a target. Due to rain and cloud coverage, no lightcurve could be constructed, and therefore no rotation period could be derived. However the 86 photometric data points allowed to find a maximum brightness variation of 0.95 magnitude (U=none). A high brightness amplitude of 0.95 is a strong indicator, that the body has a non-spheroidal shape. As of 2017, Sys rotation period still remains unknown. Naming This minor planet was named after Frédéric Sy, who worked as a human orbit computer and as an assistant astronomer at Algiers and Paris Observatory, respectively. At Algiers Observatory, he observed asteroids and comets and was the first to discoverer a numbered minor planet, 858 El Djezaïr, in 1916. The official 1714 naming citation was published by the Minor Planet Center on 1 August 1978 (M.P.C. 4419). References 30em 2017-03-25 last obs. JPL Small-Body Database Browser: 1714 Sy (1951 OA) https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2001714 https://web.archive.org/web/20170404220431/https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2001714 dead 4 April 2017 Jet Propulsion Laboratory 7 June 2017 Dictionary of Minor Planet Names – (1714) Sy Schmadel Lutz D. Springer Berlin Heidelberg 136 2007 978-3-540-00238-3 10.1007/978-3-540-29925-7_1715 (1714) Sy 1714 Sy (1951 OA) Minor Planet Center https://www.minorplanetcenter.net/db_search/show_object?object_id=1714 3 April 2017 Dictionary of Minor Planet Names – Addendum to Fifth Edition (2006–2008) 2009 https://archive.org/details/dictionaryminorp2008schm limited Appendix – Publication Dates of the MPCs Schmadel Lutz D. Springer Berlin Heidelberg 221 978-3-642-01964-7 10.1007/978-3-642-01965-4 1714 3 April 2017 6 Patricia Moravec Joseph Cochren Michael Gerhardt Andrew Harris Ryan Karnemaat Elizabeth Melton Kellen Stolze Josh West Richard Ditteon October 2012 Asteroid Lightcurve Analysis at the Oakley Southern Sky Observatory: 2012 January–April http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2012MPBu...39..213M The Minor Planet Bulletin 39 4 213–216 1052-8091 2012MPBu...39..213M 4 April 2017 6 Joseph R. Masiero A. K. Mainzer T. Grav J. M. Bauer R. M. Cutri C. Nugent M. S. Cabrera November 2012 Preliminary Analysis of WISE/NEOWISE 3-Band Cryogenic and Post-cryogenic Observations of Main Belt Asteroids http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2012ApJ...759L...8M The Astrophysical Journal Letters 759 1 5 2012ApJ...759L...8M 10.1088/2041-8205/759/1/L8 1209.5794 3 April 2017 6 Peter Veres Robert Jedicke Alan Fitzsimmons Larry Denneau Mikael Granvik Bryce Bolin Serge Chastel Richard J. Wainscoat William S. Burgett Kenneth C. Chambers Heather Flewelling Nick Kaiser Eugen A. Magnier Jeff S. Morgan Paul A. Price John L. Tonry Christopher Waters November 2015 Absolute magnitudes and slope parameters for 250,000 asteroids observed by Pan-STARRS PS1 - Preliminary results http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2015Icar..261...34V Icarus 261 34–47 2015Icar..261...34V 10.1016/j.icarus.2015.08.007 1506.00762 3 April 2017 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/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 1714 1713 Bancilhon 1714 1715 Salli 001714 Category:Discoveries by Louis Boyer (astronomer) Category:Named minor planets 19510725