1841 Masaryk

Carbonaceous main-belt asteroid October 2019 yes 1841 Masaryk #D6D6D6 001841-asteroid shape model (1841) Masaryk.png Shape model of Masaryk from its lightcurve 26 October 1971 L. Kohoutek Bergedorf Obs. (1841) Masaryk 1971 UO 11936 FW1955 DE1959 VJ1968 FG1970 QN Tomáš Garrigue Masaryk (Czechoslovak President) main-belt(outer) 4 September 2017 (JD 2458000.5) 0 81.02 yr (29,591 days) 3.7629 AU 3.0796 AU 3.4213 AU 0.0999 6.33 yr (2,311 days) 313.50° 0.1557 ms / day 2.6203° 45.323° 119.95° 38.642 0.544 km40.240 0.50443.77 0.83 km46.04 km (derived)46.07 2.5 km 7.53 0.04 h7.54301 0.00001 h 0.0364 (derived)0.0398 0.0050.045 0.0020.052 0.0050.0567 0.0036 PCXC 10.810.910.94 0.19 1841 Masaryk (prov. designation: 1971 UO 1) is a carbonaceous background asteroid from the outer region of the asteroid belt, approximately 46 kilometers in diameter. It was discovered on 26 October 1971, by Czech astronomer Luboš Kohoutek at Bergedorf Observatory in Hamburg, Germany. The asteroid was named after the first President of Czechoslovakia, Tomáš Garrigue Masaryk. Orbit and classification Masaryk orbits the Sun in the outer main-belt at a distance of 3.1–3.8 AU once every 6 years and 4 months (2,311 days). Its orbit has an eccentricity of 0.10 and an inclination of 3° with respect to the ecliptic. First identified as 1936 FW at Uccle Observatory, Masaryks first used observation was taken at Goethe Link Observatory in 1955, extending the body's observation arc by 16 years prior to its official discovery observation. Naming This minor planet was named in honor of the first president of the independent Czechoslovak Republic, Tomáš Garrigue Masaryk (1850–1937), statesman, philosopher and known for his humanistic ideas. The official 1841 naming citation was published by the Minor Planet Center on 20 December 1974 (M.P.C. 3757). Physical characteristics The carbonaceous asteroid is characterized as a (darker) P-type and as a transitional CX-type by NEOWISE and PanSTARRS, respectively. Rotation period In April 2006, a rotational lightcurve of Masaryk'was obtained from photometric observations made by French amateur astronomer Pierre Antonini. It gave a rotation period of 7.53 hours with a brightness variation of 0.52 magnitude (U=2+). The result agrees with a lightcurve published in March 2016, using sparse-in-time photometry data from the Lowell Photometric Database (U=n.a.). Diameter and albedo According to the surveys carried out by the Infrared Astronomical Satellite IRAS, the Japanese Akari satellite, and NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, Masaryk measures between 38.6 and 46.1 kilometers in diameter, and its surface has an albedo between 0.039 and 0.057. The Collaborative Asteroid Lightcurve Link derives an albedo of 0.036 and a diameter of 46.0 kilometers with an absolute magnitude of 10.9. References 30em 2017-03-29 last obs. JPL Small-Body Database Browser: 1841 Masaryk (1971 UO1) https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2001841 Jet Propulsion Laboratory 8 June 2017 Dictionary of Minor Planet Names – (1841) Masaryk Schmadel Lutz D. Springer Berlin Heidelberg 147 2007 978-3-540-00238-3 10.1007/978-3-540-29925-7_1842 (1841) Masaryk 1841 Masaryk (1971 UO1) Minor Planet Center https://www.minorplanetcenter.net/db_search/show_object?object_id=1841 14 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 Asteroids and comets rotation curves – (1841) Masaryk Behrend Raoul Geneva Observatory http://obswww.unige.ch/~behrend/page4cou.html#001841 14 December 2016 1 April 2019 https://web.archive.org/web/20190401181659/http://obswww.unige.ch/~behrend/page4cou.html#001841 dead 1841 14 December 2016 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 (online, AcuA catalog p. 153) 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 – IRAS-A-FPA-3-RDR-IMPS-V6.0 2004PDSS...12.....T 17 October 2019 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 J. Durech J. Hanus D. Oszkiewicz R. Vanco March 2016 Asteroid models from the Lowell photometric database http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2016A&A...587A..48D Astronomy and Astrophysics 587 6 2016A&A...587A..48D 10.1051/0004-6361/201527573 1601.02909 14 December 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 14 December 2016 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 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 1841 1840 Hus 1841 1842 Hynek 001841 Category:Discoveries by Luboš Kohoutek Category:Named minor planets 19711026