1665 Gaby

Main-belt asteroid October 2019 yes 1665 Gaby #D6D6D6 001665-asteroid shape model (1665) Gaby.png Shape model of Gaby from its lightcurve 27 February 1930 K. Reinmuth Heidelberg Obs. (1665) Gaby 1930 DQ1941 BC1949 HS1951 WQ1957 KF Gaby Reinmuth(daughter-in-law of)Karl Reinmuth main-belt(inner) 4 September 2017 (JD 2458000.5) 0 87.04 yr (31,793 days) 2.9145 AU 1.9128 AU 2.4136 AU 0.2075 3.75 yr (1,370 days) 165.86° 0.2628 ms / day 10.835° 91.543° 5.9166° 10.746 0.179 km10.960 0.021 km11.009 km11.01 km (taken) 66 2 h67.905 0.005 h67.911 0.005 h 0.25320.2681 0.07360.278 0.049 Tholen = SSB–V = 0.848U–B = 0.481 11.8511.9 0.212.19 0.97 1665 Gaby, provisional designation 1930 DQ, is a stony asteroid and a relatively slow rotator from the inner regions of the asteroid belt, approximately 11 kilometers in diameter. It was discovered on 27 February 1930, by German astronomer Karl Reinmuth at Heidelberg Observatory in southern Germany. It was later named after Gaby Reinmuth, the discoverer's daughter-in-law. Orbit and classification Gaby orbits the Sun at a distance of 1.9–2.9 AU once every 3 years and 9 months (1,370 days). Its orbit has an eccentricity of 0.21 and an inclination of 11° with respect to the ecliptic. No precoveries were taken, and no prior identifications were made of Gaby. The body's observation arc begins 2 months after its official discovery observation at Heidelberg. Physical characteristics In the Tholen classification, Gaby is a common S-type asteroid. Lightcurves In February 2005, French amateur astronomer Laurent Bernasconi obtained a rotational lightcurve of Gaby from photometric observations. It gave a rotation period of 66 hours with a brightness variation of 0.27 magnitude (U=2). This is a longer-than average rotation, since most minor planets have a period between 2 and 20 hours (see list). In 2016, concurring sidereal periods of 67.905 and 67.911 hours were obtained from modeled photometric observations derived from the Lowell Photometric Database and other sources (U=n.a.). Diameter and albedo According to the survey carried out by NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, Gaby measures between 10.75 and 11.01 kilometers in diameter, and its surface has an albedo between 0.253 and 0.278. The Collaborative Asteroid Lightcurve Link adopts Petr Pravec's revised WISE data with an albedo of 0.2532 and a diameter of 11.01 kilometers using an absolute magnitude of 11.9 0.2. Naming This minor planet was named by the discoverer for his daughter-in-law, Gaby Reinmuth. The official 1665 naming citation was published by the Minor Planet Center on 15 December 1968 (M.P.C. 2901). References 2017-03-15 last obs. JPL Small-Body Database Browser: 1665 Gaby (1930 DQ) https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2001665 Jet Propulsion Laboratory 6 June 2017 Dictionary of Minor Planet Names – (1665) Gaby Schmadel Lutz D. Springer Berlin Heidelberg 132 2007 978-3-540-00238-3 10.1007/978-3-540-29925-7_1666 (1665) Gaby 1665 Gaby (1930 DQ) Minor Planet Center https://www.minorplanetcenter.net/db_search/show_object?object_id=1665 23 December 2016 Dictionary of Minor Planet Names – Addendum to Fifth Edition (2006–2008) 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 Asteroids and comets rotation curves – (1665) Gaby Behrend Raoul Geneva Observatory http://obswww.unige.ch/~behrend/page4cou.html#001665 23 December 2016 1 April 2019 https://web.archive.org/web/20190401181659/http://obswww.unige.ch/~behrend/page4cou.html#001665 dead 1665 23 December 2016 6 A. Mainzer T. Grav J. Masiero E. Hand J. Bauer D. Tholen R. S. McMillan T. 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June 2011 A study of asteroid pole-latitude distribution based on an extended set of shape models derived by the lightcurve inversion method http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2011A&A...530A.134H Astronomy & Astrophysics 530 16 2011A&A...530A.134H 10.1051/0004-6361/201116738 1104.4114 23 December 2016 6 J. Hanus J. Durech D. A. Oszkiewicz R. Behrend B. Carry M. Delbo O. Adam V. Afonina R. Anquetin P. Antonini L. Arnold M. Audejean P. Aurard M. Bachschmidt B. Baduel E. Barbotin P. Barroy P. Baudouin L. Berard N. Berger L. Bernasconi J.-G. Bosch S. Bouley I. Bozhinova J. Brinsfield L. Brunetto G. Canaud J. Caron F. Carrier G. Casalnuovo S. Casulli M. Cerda L. Chalamet S. Charbonnel B. Chinaglia A. Cikota F. Colas J.-F. Coliac A. Collet J. Coloma M. Conjat E. Conseil R. Costa R. Crippa M. Cristofanelli Y. Damerdji Debackè A. re A. Decock Q. Déhais T. Déléage S. Delmelle C. Demeautis M. Drózdz G. Dubos T. Dulcamara M. Dumont R. Durkee R. Dymock A. Escalante del Valle N. 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Sobkowiak P. Sogorb F. Soldán A. Spiridakis E. Splanska S. Sposetti D. Starkey R. Stephens A. Stiepen R. Stoss J. Strajnic J.-P. Teng G. Tumolo A. Vagnozzi B. Vanoutryve J. M. Vugnon B. D. Warner M. Waucomont O. Wertz M. Winiarski M. Wolf February 2016 New and updated convex shape models of asteroids based on optical data from a large collaboration network Astronomy and Astrophysics 586 24 2016A&A...586A.108H 10.1051/0004-6361/201527441 1510.07422 A. W. Harris J. W. Young Thor Dockweiler J. Gibson M. Poutanen E. Bowell January 1992 Asteroid lightcurve observations from 1981 http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=1992Icar...95..115H Icarus 95 1 115–147.ResearchsupportedbyLowellObservatoryEndowmentandNASA 0019-1035 1992Icar...95..115H 10.1016/0019-1035(92)90195-D 23 December 2016 6 Peter Veres Robert Jedicke Alan Fitzsimmons Larry Denneau Mikael Granvik Bryce Bolin Serge Chastel Richard J. Wainscoat William S. Burgett Kenneth C. 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Preliminary Albedos and Diameters http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2011ApJ...741...68M The Astrophysical Journal 741 2 20 2011ApJ...741...68M 10.1088/0004-637X/741/2/68 1109.4096 23 December 2016 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 1665 1664 Felix 1665 1666 van Gent 001665 Category:Discoveries by Karl Wilhelm Reinmuth Category:Named minor planets 001665 19300227