1979 Sakharov

Stony main-belt asteroid October 2019 yes 1979 Sakharov #D6D6D6 24 September 1960 C. J. van HoutenI. van Houten-G.T. Gehrels Palomar Obs. (1979) Sakharov 2006 P-L1971 SQ 31982 SZ 12 Andrei Sakharov(Russian physicist) main-beltVestian 4 September 2017 (JD 2458000.5) 0 56.60 yr (20,672 days) 2.6125 AU 2.1368 AU 2.3747 AU 0.1002 3.66 yr (1,337 days) 157.42° 0.2693 ms / day 6.0480° 202.65° 221.15° 4.51 km (taken)4.512 km4.760 0.211 km 7.5202 0.0003 h7.5209 0.0002 hPravec-web7.521 0.005 hPravec-web7.589 0.001 h 0.2620.3103 0.04500.394 0.040 Q-VS 13.31 0.02 (R)Pravec-web13.513.613.67 0.2813.8 0.054 1979 Sakharov, provisionally designated 2006 P-L, is a stony Vestian asteroid from the inner regions of the asteroid belt, approximately 4.5 kilometers in diameter. It was discovered during the Palomar–Leiden survey in 1960, and named after Russian physicist Andrei Sakharov. Discovery Sakharov was discovered on 24 September 1960, by the Dutch astronomers Ingrid and Cornelis van Houten, on photographic plates taken by Dutch–American astronomer Tom Gehrels at the U.S. Palomar Observatory in California. Survey designation The survey designation "P-L" stands for Palomar–Leiden, named after Palomar Observatory and Leiden Observatory, which collaborated on the fruitful Palomar–Leiden survey in the 1960s. Gehrels used Palomar's Samuel Oschin telescope (also known as the 48-inch Schmidt Telescope), and shipped the photographic plates to Ingrid and Cornelis van Houten at Leiden Observatory where astrometry was carried out. The trio are credited with the discovery of several thousand minor planets. Orbit and classification Sakharov is a member of the Vesta family, which is named after the main-belt's second-largest body, 4 Vesta. It orbits the Sun in the inner main-belt at a distance of 2.1–2.6 AU once every 3 years and 8 months (1,337 days). Its orbit has an eccentricity of 0.10 and an inclination of 6° with respect to the ecliptic. The body's observation arc begins with its official discovery observation at Palomar, . Physical characteristics The stony S-type asteroid, has been characterized as a Q-V-type by PanSTARRS photometric survey. Rotation period In 2011 and 2013, a total of four well-defined rotational lightcurves were obtained for this asteroid by astronomers Julian Oey at the Australian Kingsgrove and Leura/ Blue Mountains Observatory (E19 and E17/Q68) and by Petr Pravec at the Czech Ondřejov Observatory.Pravec-web The lightcurve gave a rotation period of 7.520 to 7.589 hours with a brightness variation between 0.12 and 0.22 in magnitude (U=3/3-/3-/3). Diameter and albedo According to the original data from the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, the asteroid measures 4.8 kilometers in diameter and its surface has an albedo of 0.31, while the Collaborative Asteroid Lightcurve Link agrees with the revised NEOWISE data which gave an albedo of 0.26 and a diameter of 4.5 kilometers with an absolute magnitude of 13.8. Naming This minor planet was named in honour of renowned Russian mathematician and physicist Andrei Sakharov (1921–1989), who received the Nobel Peace Prize in 1975. The official naming citation was published by the Minor Planet Center on 1 August 1981 (M.P.C. 6207). Notes Pravec-web Pravec (2011) web: rotation period 7.5209 0.0002 hours with a brightness amplitude of 0.13 magnitude and an absolute magnitude of 13.31 (see lightcurve plot). Also, Pravec(2013) web: rotation period 7.521 0.005 hours with a brightness amplitude of 0.21 mag. Summary figures at Collaborative Asteroid Lightcurve Link (CALL) for (1979) Sakharov and Pravec, P.; Wolf, M.; Sarounova, L. (2011) / Pravec, P.; Wolf, M.; Sarounova, L. (2013) References 30em 2017-04-30 last obs. JPL Small-Body Database Browser: 1979 Sakharov (2006 P-L) https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2001979 Jet Propulsion Laboratory 10 June 2017 Dictionary of Minor Planet Names – (1979) Sakharov Schmadel Lutz D. Springer Berlin Heidelberg 160 2007 978-3-540-00238-3 10.1007/978-3-540-29925-7_1980 (1979) Sakharov 1979 Sakharov (2006 P-L) Minor Planet Center https://www.minorplanetcenter.net/db_search/show_object?object_id=1979 30 August 2016 Minor Planet Discoverers Minor Planet Center https://www.minorplanetcenter.net/iau/lists/MPDiscsNum.html 18 August 2016 30 August 2016 MPC/MPO/MPS Archive Minor Planet Center https://www.minorplanetcenter.net/iau/ECS/MPCArchive/MPCArchive_TBL.html 30 August 2016 1979 30 August 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 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 30 August 2016 11104/0217021 free 6 Julian Oey Raguli Ya. Inasaridze Otar I. Kvaratskhelia Vova Ayvazian Vasilij G. Chirony Yurij N. Krugly Igor E. Molotov Brian D. Warner Petr Pravec Peter Kusnirák David Higgins Joseph Pollock Joshua Haislip Kevin Ivarsen Daniel Reichart Aaron Lacluyze Adrian Galád July 2013 Lightcurve Analysis is Search of Binary Asteroids http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2013MPBu...40..169O The Minor Planet Bulletin 40 3 169–172 1052-8091 2013MPBu...40..169O 30 August 2016 Oey, Julian October 2014 Lightcurve Analysis of Asteroids from Blue Mountains Observatory in 2013 http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2014MPBu...41..276O The Minor Planet Bulletin 41 4 276–281 1052-8091 2014MPBu...41..276O 30 August 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 30 August 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 8 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/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 1979 1978 Patrice 1979 1980 Tezcatlipoca 001979 2006 Category:Discoveries by Cornelis Johannes van Houten Category:Discoveries by Ingrid van Houten-Groeneveld Category:Discoveries by Tom Gehrels Category:Named minor planets 19600924