19982 Barbaradoore

Asteroid October 2019 yes 19982 Barbaradoore #FA8072 22 January 1990 E. F. Helin Palomar Obs. (19982) Barbaradoore 1990 BJ1983 AD 2 Barbara Doore(discoverer's cousin) Mars crossermain-beltPhocaea 4 September 2017 (JD 2458000.5) 0 33.36 yr (12,186 days) 3.0039 AU 1.6657 AU 2.3348 AU 0.2866 3.57 yr (1,303 days) 307.09° 0.2763 ms / day 22.325° 290.03° 106.86° 3.88 0.63 km4.668 0.120 km5.02 0.14 km5.66 km (calculated) 3.3162 0.0003 hlcdb-Pravec 0.20 (assumed)0.306 0.0400.3540 0.07840.42 0.21 S (assumed) 13.13 0.4713.413.513.6 19982 Barbaradoore (provisional designation 1990 BJ) is an eccentric, stony Phocaea asteroid and a recent Mars-crosser from the inner regions of the asteroid belt, approximately 5 kilometers in diameter. It was discovered on 22 January 1990, by American astronomer Eleanor Helin at the Palomar Observatory in California, United States. The asteroid was named after Barbara Doore, a cousin of the discoverer. Orbit and classification When applying the Hierarchical Clustering Method to its proper orbital elements, Barbaradoore is a member of the Phocaea family (701), a large family of stony S-type asteroids with nearly two thousand known members.23 It orbits the Sun in the inner main-belt at a distance of 1.7–3.0 AU once every 3 years and 7 months (1,303 days). Its orbit has an eccentricity of 0.29 and an inclination of 22° with respect to the ecliptic. Recent Mars-crosser and disparate criteria As of 2017, Barbaradoore has become a Mars-crossing asteroid (MCA), a dynamically unstable group between the main belt and the near-Earth populations, because its perihelion is at 1.6657, declining from 1.6662 AU just the year before. In the JPL Small-Body Database, an asteroid's perihelion has to be smaller than 1.666 AU in order to classify as MCA, while in the Lightcurve Data Base, that limit is defined at 1.668 AU.JPL-Mars-crosser As of 2017, the Minor Planet Center does not classify Barbaradoore as an MCA, due to a differently defined threshold-perihelion of 1.6600 AU. It therefore remains an unspecified main-belt asteroid. Before 2017, when Barbaradoore's orbit did not yet cross that of Mars, it was an outer Mars grazer. Physical characteristics Barbaradoore is an assumed stony S-type asteroid, which agrees with the overall spectral type for members of the Phocaea family.23 Lightcurve In July 2010, a rotational lightcurve of Barbaradoore was obtained from photometric observation by Czech astronomer Petr Pravec at Ondřejov Observatory. Lightcurve analysis gave a well-defined rotation period of 3.3162 hours with a brightness variation of 0.28 magnitude (U=3).lcdb-Pravec Diameter and albedo According to the surveys carried out by NASA's Wide-field Infrared Survey Explorer and its subsequent NEOWISE mission, Barbaradoore has a high albedo between 0.306 and 0.42 with a corresponding diameter of 3.88 to 5.02 kilometers, while the Collaborative Asteroid Lightcurve Link assumes a standard albedo for stony asteroids of 0.20 and calculates a diameter of 5.66 kilometers with an absolute magnitude of 13.6. Comparison With a diameter of approximately 5 kilometers, Barbaradoore is one of the smallest sizable Mars-crossing asteroids compared to 1065 Amundsenia (9.75 km), 1139 Atami (9.35 km), 1508 Kemi (17 km), 1011 Laodamia (7.39 km), 1727 Mette (est 9 km), 1131 Porzia (7.13 km), 1235 Schorria (est. 9 km), 985 Rosina (8.18 km) 1310 Villigera (15.24 km), and 1468 Zomba (7 km); and much smaller than the largest members of this dynamical group, namely, 132 Aethra, 323 Brucia, 2204 Lyyli and 512 Taurinensis, which are larger than 20 kilometers in diameter. Naming This minor planet was named after a cousin of the discoverer, Barbara Hendricks Doore (born 1933). She is described by the discoverer as an admirer of sports and as an appreciated leader and volunteer, who has dedicated much of her time at Cathedral City's Boys and Girls Club in California. The official naming citation was published by the Minor Planet Center on 24 June 2002 (M.P.C. 46012). Notes lcdb-Pravec Pravec (2010): lightcurve plot of (19982) Barbaradoore with a rotation period of 3.3162 0.0003 hours and a brightness amplitude of 0.28 mag. CALL assigns a quality-code of Q=3, which denotes a "secure result within the precision given and no ambiguity". Summary figures at Collaborative Asteroid Lightcurve Link (CALL) and Ondrejov Asteroid Photometry Project – Pravec, P.; Wolf, M.; Sarounova, L. (2010) JPL-Mars-crosser The JPL Small-Body Database uses the following orbital criteria to define a Mars-crossing asteroid: A perihelion that is between 1.3 and 1.666 AU with a semi-major axis that is not greater than 3.2 AU, see JPL's Orbit Classification References 30em 2016-05-22 last obs. JPL Small-Body Database Browser: 19982 Barbaradoore (1990 BJ) https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2019982 https://web.archive.org/web/20200901001217/https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2019982 1 September 2020 Jet Propulsion Laboratory 27 June 2017 Schmadel Lutz D. Dictionary of Minor Planet Names Springer Berlin Heidelberg 860 2007 978-3-540-00238-3 10.1007/978-3-540-29925-7_9595 (19982) Barbaradoore 19982 Barbaradoore (1990 BJ) Minor Planet Center https://www.minorplanetcenter.net/db_search/show_object?object_id=19982 26 April 2016 MPC/MPO/MPS Archive Minor Planet Center https://www.minorplanetcenter.net/iau/ECS/MPCArchive/MPCArchive_TBL.html 26 April 2016 13000 objects with orbit type Mars-crosser Minor Planet Center http://minorplanetcenter.net/db_search/show_by_orbit_type?utf8=%E2%9C%93&orbit_type=5 27 June 2017 Asteroid 19982 Barbaradoore – Nesvorny HCM Asteroid Families V3.0 Small Bodies Data Ferret https://sbntools.psi.edu/ferret/SimpleSearch/results.action?targetName=19982+Barbaradoore#Asteroid%2019982%20BarbaradooreEAR-A-VARGBDET-5-NESVORNYFAM-V3.0 27 October 2019 D. Nesvorný M. Broz V. Carruba December 2014 Identification and Dynamical Properties of Asteroid Families Asteroids IV 297–321 2015aste.book..297N 10.2458/azu_uapress_9780816532131-ch016 1502.01628 978-0-8165-3213-1 19982 26 April 2016 LCDB readme – 2. Taxonomic Class, orbital class, and albedo Asteroid Lightcurve Database (LCDB) http://www.minorplanet.info/datazips/LCDB_readme.txt 20 January 2016 10 March 2021 https://web.archive.org/web/20210310080108/http://www.minorplanet.info/datazips/LCDB_readme.txt 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 http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2011ApJ...741...90M The Astrophysical Journal 741 2 25 2011ApJ...741...90M 10.1088/0004-637X/741/2/90 1109.6407 20 January 2016 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 20 January 2016 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 26 April 2016 6 Joseph R. Masiero A. K. Mainzer T. Grav J. M. Bauer R. M. Cutri J. Dailey P. R. M. Eisenhardt R. S. McMillan T. B. Spahr M. F. Skrutskie D. Tholen R. G. Walker E. L. Wright E. DeBaun D. Elsbury T. IV Gautier S. Gomillion A. Wilkins November 2011 Main Belt Asteroids with WISE/NEOWISE. I. 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 3 December 2016 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 27 June 2017 External links Pravec, P.; Wolf, M.; Sarounova, L. (2010) 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 (15001)-(20000) – Minor Planet Center 19982 19981 Bialystock 19982 019982 019982 Category:Discoveries by Eleanor F. Helin Category:Named minor planets 19900122