1028 Lydina

Carbonaceous main-belt asteroid March 2018 yes 1028 Lydina #D6D6D6 V. Albitzkij Simeiz Obs. 6 November 1923 (1028) Lydina 1923 PGA907 JFA914 JA Lydia Il'inichna Albitskaya(discoverer's wife) main-belt(outer)backgroundCybeleCybele-group 23 March 2018 (JD 2458200.5) 0 110.80 yr (40,471 d) 3.7695 AU 3.0454 AU 3.4075 AU 0.1062 6.29 yr (2,297 d) 346.68° 0.1567 ms / day 9.3940° 62.833° 24.747° 71.38 2.2 km81.85 21.71 km88.526 0.762 km96.830 1.081 km97.18 1.38 km 11.674 0.002 h11.680 0.005 h15.69 h48 1 h (poor) 0.0318 0.00540.032 0.0010.038 0.0060.04 0.050.0586 0.004 Tholen CB–V 0.684U–B 0.276 9.4310.31 0.76 1028 Lydina, provisional designation 1923 PG, is a carbonaceous background asteroid and member of the Cybele group from the outermost regions of the asteroid belt, approximately 82 km mi off 1 us in diameter. It was discovered at the Simeiz Observatory on the Crimean peninsula on 6 November 1923, by Soviet astronomer Vladimir Albitsky, who named it after his wife, Lydia Il'inichna Albitskaya. The dark C-type asteroid has a rotation period of 11.68 hours. Orbit and classification Lydina is a non-family asteroid from the main belt's background population when applying the hierarchical clustering method to its proper orbital elements. Based on osculating Keplerian orbital elements, the asteroid is considered a member of the dynamical Cybele group, which are asteroid with low orbital inclinations and eccentricities, and with a semi-major axis between 3.3 and 3.5 AU, near the 4:7 orbital resonance with Jupiter.Cybele-group It orbits the Sun in the outermost asteroid belt at a distance of 3.0–3.8 AU once every 6 years and 3 months (2,297 days; semi-major axis of 3.41 AU). Its orbit has an eccentricity of 0.11 and an inclination of 9° with respect to the ecliptic. The body's observation arc begins with its first observation as A907 JF at Heidelberg Observatory in May 1907, more than 16 years prior to its official discovery observation at Simeiz. Physical characteristics In the Tholen, Lydina is a carbonaceous C-type asteroid. Rotation period In November 2011, a rotational lightcurve of Lydina was obtained from photometric observations by Robert Stephens at his Santana Observatory 646 in California. Lightcurve analysis gave a well-defined rotation period of 11.680 hours with a brightness variation of 0.22 magnitude (U=3). Observations at the Italian Bassano Bresciano Observatory in December 2011 measured a concurring period 11.674 with an amplitude of 0.30 magnitude (U=3-). A previous observations at the Pico dos Dias Observatory 874, Brasil, gave a period of 15.69 hours, which Stephens interpreted as a 4:3-alias period solution of his results. A provisional lightcurve from March 2007, obtained by French amateur astronomers Pierre Antonini and Jean-Gabriel Bosch (48 hours) is of poor quality (U=1). 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, Lydina measures between 71.38 and 97.18 kilometers in diameter and its surface has an albedo between 0.0318 and 0.0586. The Collaborative Asteroid Lightcurve Link adopts the results obtained by IRAS, that is, an albedo of 0.0586 and a diameter of 71.38 kilometers based on an absolute magnitude of 9.43. 1028 Lydina has been observed to occult 5 stars between 2000 and 2023. Naming This minor planet was named after Lydia Il'inichna Albitskaya, wife of the discoverer Vladimir Albitsky (1891–1952). No accurate naming citation was given for this asteroid in The Names of the Minor Planets. The author of the Dictionary of Minor Planets, Lutz Schmadel, learned about the naming circumstances from Nikolai Chernykh (1931–2004), who was himself a prolific long-time astronomer at Nauchnij, Crimea. Notes Cybele-group See online excerpt of Linda T. Elkins-Tanton's book Asteroids, meteorites, and comets (2011); and orbital criteria in Minor planet groups/families by projectpluto.com. Also see comment at Asteroid family Cybele group. References 30em 2018-02-26 last obs. JPL Small-Body Database Browser: 1028 Lydina (1923 PG) https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2001028 Jet Propulsion Laboratory 16 March 2018 Schmadel Lutz D. Dictionary of Minor Planet Names Springer Berlin Heidelberg 88 2007 978-3-540-00238-3 10.1007/978-3-540-29925-7_1029 (1028) Lydina 1028 Lydina (1923 PG) Minor Planet Center https://www.minorplanetcenter.net/db_search/show_object?object_id=1028 16 March 2018 Asteroids and comets rotation curves – (1028) Lydina Behrend Raoul Geneva Observatory http://obswww.unige.ch/~behrend/page3cou.html#001028 16 March 2018 3 December 2002 https://web.archive.org/web/20021203214643/http://obswww.unige.ch/~behrend/page3cou.html#001028 dead 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 The Astrophysical Journal 791 2 11 2014ApJ...791..121M 10.1088/0004-637X/791/2/121 1406.6645 119293330 Asteroid 1028 Lydina – Nesvorny HCM Asteroid Families V3.0 Small Bodies Data Ferret https://sbntools.psi.edu/ferret/SimpleSearch/results.action?targetName=1028+Lydina https://web.archive.org/web/20201004033702/https://sbntools.psi.edu/ferret/SimpleSearch/results.action?targetName=1028+Lydina dead 4 October 2020 24 October 2019 1028 16 March 2018 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 35447010 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 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 16 March 2018 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) Stephens, Robert D. April 2012 Asteroids Observed from GMARS and Santana Observatories: 2011 October- December http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2012MPBu...39...80S The Minor Planet Bulletin 39 2 80–82 1052-8091 2012MPBu...39...80S 16 March 2018 R. Almeida C. A. Angeli R. Duffard D. Lazzaro February 2004 Rotation periods for small main-belt asteroids Astronomy and Astrophysics 415 403–406 2004A&A...415..403A 10.1051/0004-6361:20034585 free Luca Strabla Ulisse Quadri Roberto Girelli July 2012 Lightcurve Analysis for Eight Minor Palnets at Bassano Bresciano Observatory http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2012MPBu...39..177S The Minor Planet Bulletin 39 3 177–179 1052-8091 2012MPBu...39..177S 16 March 2018 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 16 March 2018 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 1028 1027 Aesculapia 1028 1029 La Plata 001028 Lydina Lydina 001028 19231106