1177 Gonnessia

Main-belt asteroid October 2019 yes 1177 Gonnessia #D6D6D6 L. Boyer Algiers Obs. 24 November 1930 (1177) Gonnessia 1930 WAA923 RO François Gonnessiat(French astronomer) main-belt(outer) 4 September 2017 (JD 2458000.5) 0 86.28 yr (31,513 days) 3.4519 AU 3.2440 AU 3.3480 AU 0.0310 6.13 yr (2,238 days) 344.46° 0.1609 ms / day 15.071° 252.16° 241.85° 91.98 9.9 km93.50 1.01 km99.27 43.41 km104.63 33.73 km 6.81 0.01 h (poor)10 h28.89 0.02 h30.51 0.02 h30.51 hLCDB-Pravec-201182 5 hLightcurve-plot-Warner 0.03 0.020.03 0.040.0398 0.0100.040 0.001 Tholen XFUXB–V 0.668U–B 0.244 8.86 0.13 (R)LCDB-Pravec-20119.249.24 0.1399.309.359.49.66 0.60 1177 Gonnessia, provisional designation 1930 WA, is a dark background asteroid from the outer regions of the asteroid belt, approximately 99 kilometers in diameter. It was discovered on 24 November 1930, by French astronomer Louis Boyer at the Algiers Observatory in Algeria, North Africa, and named after astronomer François Gonnessiat. Orbit and classification Gonnessia is not a member of any known asteroid family. It orbits the Sun in the outer main-belt at a distance of 3.2–3.5 AU once every 6 years and 2 months (2,238 days). Its orbit has an eccentricity of 0.03 and an inclination of 15° with respect to the ecliptic. The asteroid was first observed as A923 RO at Simeiz Observatory in September 1923. The body's observation arc begins at Heidelberg Observatory, three weeks after its official discovery observation at Algiers Bouzaréah. Physical characteristics In the Tholen classification, Gonnessia is classified as an asteroid with an unusual spectrum (XFU). It was also characterized as an X-type asteroid by PanSTARRS photometric survey. Lightcurve photometry Several rotational lightcurves of Gonnessia were obtained since 2002. The best rated photometric observations were taken in 2010, by American astronomer Robert Stephens at the Goat Mountain Astronomical Research Station (G79) and Santana Observatory (646) in California. Lightcurve analysis gave a rotation period of 30.51 hours with a brightness amplitude of 0.10 magnitude, indicative for a spheroidal shape (U=3-/3-).LCDB-Pravec-2011 Previous observations by Brian Warner gave a longer period of 82 hours based on sparse photometry (U=2-).Lightcurve-plot-Warner While not being a slow rotator, Gonnessia has a notably slower spin rate than most asteroids. Diameter and albedo According to the surveys carried out by the Infrared Astronomical Satellite IRAS, the Japanese Akari satellite and the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Gonnessia measures between 91.98 and 104.63 kilometers in diameter and its surface has an albedo between 0.03 and 0.040. The Collaborative Asteroid Lightcurve Link adopts the results obtained by IRAS, that is an albedo of 0.0398 with a diameter of 91.98 kilometers. It also takes Petr Pravec's revised absolute magnitude from WISE of 9.24. Naming This minor planet was named after astronomer François Gonnessiat (1856–1934), who was an observer of comets and a discoverer of minor planets. Gonnessiat was also a director of the discovering Algiers Observatory and headed the Quito Astronomical Observatory in Ecuador as well. The official naming citation was mentioned in The Names of the Minor Planets by Paul Herget in 1955 (H 109). Notes LCDB-Pravec-2011 Pravec (2011) web: rotation period 30.51 hours with a brightness amplitude of 0.1 mag in August 2008. Period was fixed at Stephens value. Absolute magnitude of 8.86. mag. Summary figures for (1177) Gonnessia at Collaborative Asteroid Lightcurve Link and Ondrejov Asteroid Photometry Project Lightcurve-plot-Warner Lightcurve plot of 1177 Gonnessia, from the Palmer Divide Observatory, by Brian D. Warner (2002) References 30em 2017-03-29 last obs. JPL Small-Body Database Browser: 1177 Gonnessia (1930 WA) https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2001177 Jet Propulsion Laboratory 26 August 2017 Dictionary of Minor Planet Names – (1177) Gonnessia Schmadel Lutz D. Springer Berlin Heidelberg 99 2007 978-3-540-00238-3 10.1007/978-3-540-29925-7_1178 (1177) Gonnessia 1177 Gonnessia (1930 WA) Minor Planet Center https://www.minorplanetcenter.net/db_search/show_object?object_id=1177 26 August 2017 Asteroids and comets rotation curves – (1177) Gonnessia Behrend Raoul Geneva Observatory http://obswww.unige.ch/~behrend/page3cou.html#001177 26 August 2017 3 December 2002 https://web.archive.org/web/20021203214643/http://obswww.unige.ch/~behrend/page3cou.html#001177 dead 1177 26 August 2017 6 C. R. Nugent A. Mainzer J. Masiero J. Bauer R. M. Cutri T. Grav E. Kramer S. Sonnett R. Stevenson E. L. Wright December 2015 NEOWISE Reactivation Mission Year One: Preliminary Asteroid Diameters and Albedos http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2015ApJ...814..117N The Astrophysical Journal 814 2 13 2015ApJ...814..117N 10.1088/0004-637X/814/2/117 1509.02522 9341381 26 August 2017 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 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) 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 Warner, Brian D. December 2002 Lightcurve analysis for asteroids 607 Jenny, 1177 Gonnessia 4440 Tchantches, 4896 Tomoegozen, and (4995) 1984 QR http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2003MPBu...30...33W The Minor Planet Bulletin 30 2 33–35 1052-8091 2003MPBu...30...33W 26 August 2017 Stephens, Robert D. April 2011 Asteroids Observed from GMARS and Santana Observatories: 2010 October–December http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2011MPBu...38..115S The Minor Planet Bulletin 38 2 115 1052-8091 2011MPBu...38..115S 26 August 2017 Stephens, Robert D. July 2011 Asteroids Observed from GMARS and Santana Observatories: 2011 January–March http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2011MPBu...38..165S The Minor Planet Bulletin 38 3 165–166 1052-8091 2011MPBu...38..165S 26 August 2017 Warner, Brian D. April 2011 Upon Further Review: VI. An Examination of Previous Lightcurve Analysis from the Palmer Divide Observatory http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2011MPBu...38...96W The Minor Planet Bulletin 38 2 96–101 1052-8091 2011MPBu...38...96W 26 August 2017 Petr Pravec Alan W. Harris Peter Kusnirák Adrián Galád Kamil Hornoch September 2012 Absolute magnitudes of asteroids and a revision of asteroid albedo estimates from WISE thermal observations http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2012Icar..221..365P Icarus 221 1 365–387 2012Icar..221..365P 10.1016/j.icarus.2012.07.026 26 August 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 53493339 26 August 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/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 1177 1176 Lucidor 1177 1178 Irmela 001177 Category:Discoveries by Louis Boyer (astronomer) Category:Named minor planets 001177 19301124