1789 Dobrovolsky

Main-belt asteroid October 2019 yes 1789 Dobrovolsky #D6D6D6 001789-asteroid shape model (1789) Dobrovolsky.png Shape model of Dobrovolsky from its lightcurve 19 August 1966 L. Chernykh Crimean Astrophysical Obs. (1789) Dobrovolsky 1966 QC1936 KK1939 GR1943 SG1946 NA1953 TC 21953 VX 31955 EJ1956 PD1956 RT1969 OF Georgy Dobrovolsky(cosmonaut) main-beltFlora 4 September 2017 (JD 2458000.5) 0 73.51 yr (26,850 days) 2.6309 AU 1.7952 AU 2.2131 AU 0.1888 3.29 yr (1,203 days) 195.44° 0.2994 ms / day 1.9761° 102.09° 214.93° 7.809 0.077 km7.922 0.0999.85 km (calculated)11.23 0.37 km 4.800 0.020 h4.811096 0.000005 h4.8111 0.0025 h4.812 0.001 hLCDB-Skiff-20115.8 h 0.1825 0.02430.185 0.0310.24 (assumed) S 11.05 1.5311.800 0.080 (R)11.922 0.001 (R)12.213.0 1789 Dobrovolsky (prov. designation: 1966 QC) is a Flora asteroid from the inner regions of the asteroid belt, approximately 8 kilometers in diameter. It was discovered on 19 August 1966, by Russian astronomer Lyudmila Chernykh at the Crimean Astrophysical Observatory in Nauchnyj on the Crimean peninsula. The asteroid was named after cosmonaut Georgy Dobrovolsky. Orbit and classification Dobrovolsky is a member of the Flora family, a large group of stony S-type asteroids in the inner main-belt. It orbits the Sun in the inner main-belt at a distance of 1.8–2.6 AU once every 3 years and 3 months (1,203 days). Its orbit has an eccentricity of 0.19 and an inclination of 2° with respect to the ecliptic. First identified as 1936 KK at Johannesburg, the body's first used observation was taken at Nice Observatory in 1943, when Dobrovolsky was identified as 1943 SG, extending its observation arc by 23 years prior to its official discovery observation. Naming This minor planet was named in honor of Ukrainian–Soviet cosmonaut Georgy Dobrovolsky, commander of the Soyuz 11 spacecraft, who died on 30 June 1971 during the vehicle's return to Earth after completing the flight program of the first crewed orbital station, Salyut. The subsequently numbered minor planets 1790 Volkov and 1791 Patsayev were named in honour of his dead crew members. The names of all three cosmonauts are also engraved on the plaque next to the sculpture of the Fallen Astronaut on the Moon, which was placed there during the Apollo 15 mission, containing the names of eight American astronauts and six Soviet cosmonauts, who had all died in service. The official 1789 naming citation was published by the Minor Planet Center on 1 July 1972 (M.P.C. 3296). Physical characteristics Rotation period The so-far best rated rotational lightcurve of Dobrovolsky was obtained from photometric observations by American astronomer Brian A. Skiff in March 2011. It gave a rotation period of 4.812 hours with a brightness variation of 0.13 magnitude (U=3).LCDB-Skiff-2011 Other lightcurves were obtained by Claes-Ingvar Lagerkvist (in 1973) and at the Palomar Transient Factory (in 2014), giving a period of 5.8, 4.800 and 4.8111 hours, respectively (U=2/2/2). An international study from February 2016, published a modeled period of 4.811096 hours (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, Dobrovolsky measures 7.92 kilometers in diameter and its surface has an albedo of 0.185 (best result), while the Collaborative Asteroid Lightcurve Link assumes an albedo of 0.24 – derived from 8 Flora, the largest member and namesake of its family – and calculates a diameter of 9.85 kilometers with an absolute magnitude of 12.2. Notes LCDB-Skiff-2011 Skiff, B.A. (2011) web: rotation period 4.812 0.001 hours with a brightness amplitude of 0.13 mag. Summary figures at Collaborative Asteroid Lightcurve Link (CALL) for (1746) Brouwer References 30em 2017-03-29 last obs. JPL Small-Body Database Browser: 1789 Dobrovolsky (1966 QC) https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2001789 Jet Propulsion Laboratory 8 June 2017 Dictionary of Minor Planet Names – (1789) Dobrovolsky Schmadel Lutz D. Springer Berlin Heidelberg 143 2007 978-3-540-00238-3 10.1007/978-3-540-29925-7_1790 (1789) Dobrovolsky 1789 Dobrovolsky (1966 QC) Minor Planet Center https://www.minorplanetcenter.net/db_search/show_object?object_id=1789 19 December 2016 Dictionary of Minor Planet Names – Addendum to Fifth Edition (2006–2008) 2009 https://archive.org/details/dictionaryminorp2008schm limited 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 1789 19 December 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 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 19 December 2016 Lagerkvist, C.-I. March 1978 Photographic photometry of 110 main-belt asteroids http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=1978A&AS...31..361L Astronomy and Astrophysics Supplement Series 31 361–381 1978A&AS...31..361L 19 December 2016 6 Chan-Kao Chang Wing-Huen Ip Ip Wing-huen Hsing-Wen Lin Yu-Chi Cheng Chow-Choong Ngeow Ting-Chang Yang Adam Waszczak Shrinivas R. 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Sanchez T. Santana-Ros A. Scholz G. Séné B. Skiff K. 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 http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2016A&A...586A.108H Astronomy and Astrophysics 586 24 2016A&A...586A.108H 10.1051/0004-6361/201527441 1510.07422 19 December 2016 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. 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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 19 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 1789 1788 Kiess 1789 1790 Volkov 001789 Category:Discoveries by Lyudmila Chernykh Category:Named minor planets 19660819