1988 Delores

Stony main-belt asteroid October 2019 yes 1988 Delores #D6D6D6 28 September 1952 Indiana University(Indiana Asteroid Program) Goethe Link Obs. (1988) Delores 1952 SV1951 GF 11952 UU1971 UE1973 GH Delores Owings(Indiana University) main-beltFlora 4 September 2017 (JD 2458000.5) 0 64.59 yr (23,591 days) 2.3749 AU 1.9336 AU 2.1543 AU 0.1024 3.16 yr (1,155 days) 226.97° 0.3117 ms / day 4.2519° 106.38° 235.01° 4.60 km (calculated)5.761 0.035 km5.818 0.097 km 88.1521 0.3555 h 0.1895 0.02520.193 0.0240.24 (assumed) S 13.401 0.002 (R)13.613.85 1988 Delores, provisional designation 1952 SV, is a stony Florian asteroid from the inner regions of the asteroid belt, approximately 5 kilometers in diameter. It was discovered on 28 September 1952, by IU's Indiana Asteroid Program at the Goethe Link Observatory near Brooklyn, Indiana, United States, and named after Delores Owings, a member of the program. Classification and orbit Delores is a stony S-type asteroid and member of the Flora family, one of the largest groups of stony asteroids in the main-belt. It orbits the Sun in the inner main-belt at a distance of 1.9–2.4 AU once every 3 years and 2 months (1,155 days). Its orbit has an eccentricity of 0.10 and an inclination of 4° with respect to the ecliptic. It was first observed as 1951 GF 1 at the McDonald Observatory in April 1951, yet the astrometric data from this observation remained unused to extend the body's observation arc prior to its official discovery. Physical characteristics Rotation period A rotational lightcurve of Delores was obtained at the Palomar Transient Factory in October 2012. It gave a rotation period of 88 hours and a brightness variation of 0.74 magnitude (U=2). While not being a slow rotator, a period of 88 hours is significantly above average, as most minor planets rotate once every 2–20 hours around their axis. It has also a high brightness amplitude, which typically indicates that the body has a non-spheroidal shape. Diameter and albedo According to the survey carried out by NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, Delores measures 5.8 kilometers in diameter and its surface has an albedo of 0.19, while the Collaborative Asteroid Lightcurve Link assumes an albedo of 0.24 — derived from 8 Flora, the family's largest member and namesake – and calculates a diameter of 4.6 kilometers with an absolute magnitude of 13.85. Naming This minor planet was named after Delores Owings, member in the Indiana Asteroid Program of Indiana University, collaborator with Tom Gehrels on the determination of absolute magnitudes of minor planets, who became the program's supervisor of astrometric measurements on photographic plates. The naming was suggested by Paul Herget, the then director of the Minor Planet Center (MPC). The official 1988 naming citation was published by the Minor Planet Center on 30 June 1977 (M.P.C. 4190). References 30em 2017-05-01 last obs. JPL Small-Body Database Browser: 1988 Delores (1952 SV) https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2001988 Jet Propulsion Laboratory 10 June 2017 Dictionary of Minor Planet Names – (1988) Delores Schmadel Lutz D. Springer Berlin Heidelberg 161 2007 978-3-540-00238-3 10.1007/978-3-540-29925-7_1989 (1988) Delores 1988 Delores (1952 SV) Minor Planet Center https://www.minorplanetcenter.net/db_search/show_object?object_id=1988 26 October 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 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 14 September 2016 1988 26 October 2016 6 A. Mainzer T. Grav J. Masiero E. Hand J. Bauer D. Tholen R. S. McMillan T. Spahr R. M. Cutri E. Wright J. Watkins W. Mo C. Maleszewski November 2011 NEOWISE Studies of Spectrophotometrically Classified Asteroids: Preliminary Results The Astrophysical Journal 741 2 25 2011ApJ...741...90M 10.1088/0004-637X/741/2/90 1109.6407 6 Adam Waszczak Chan-Kao Chang Eran O. Ofek Russ Laher Frank Masci David Levitan Jason Surace Yu-Chi Cheng Wing-Huen Ip Daisuke Kinoshita George Helou Thomas A. Prince Shrinivas Kulkarni September 2015 Asteroid Light Curves from the Palomar Transient Factory Survey: Rotation Periods and Phase Functions from Sparse Photometry http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2015AJ....150...75W The Astronomical Journal 150 3 35 2015AJ....150...75W 10.1088/0004-6256/150/3/75 1504.04041 26 October 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 1988 1987 Kaplan 1988 1989 Tatry 001988 001988 Category:Named minor planets 19520928