1462 Zamenhof

Carbonaceous Themistian asteroid October 2019 yes 1462 Zamenhof #D6D6D6 Y. Väisälä Turku Obs. 6 February 1938 (1462) Zamenhof 1938 CA1963 TS1964 VF 21969 TU 5 L. L. Zamenhof(creator of Esperanto) main-belt(outer)Themis 4 September 2017 (JD 2458000.5) 0 53.72 yr (19,623 days) 3.4958 AU 2.8032 AU 3.1495 AU 0.1100 5.59 yr (2,042 days) 7.0433° 0.1763 ms / day 0.9657° 24.810° 187.54° 25.62 km (derived)25.91 0.55 km26.57 0.52 km27.366 0.166 km27.645 0.395 km 10.2 0.6 h10.4 0.1 h 0.087 0.0150.0891 (derived)0.1108 0.03190.121 0.005 C (assumed) 10.8011.2011.31 0.32 1462 Zamenhof, provisional designation 1938 CA, is a carbonaceous Themistian asteroid from the outer regions of the asteroid belt, approximately 27 kilometers in diameter. It was discovered on 6 February 1938, by Finnish astronomer Yrjö Väisälä at the Iso-Heikkilä Observatory in Finland. The asteroid was named after L. L. Zamenhof, the creator of Esperanto. It is a recognized Zamenhof-Esperanto object. Orbit and classification Zamenhof is a Themistian asteroid that belongs to the Themis family (602), a very large family of carbonaceous asteroids, named after 24 Themis.23 It orbits the Sun in the outer main-belt at a distance of 2.8–3.5 AU once every 5 years and 7 months (2,042 days). Its orbit has an eccentricity of 0.11 and an inclination of 1° with respect to the ecliptic. The body's observation arc begins at the discovering observatory, one month prior to its official discovery observation. Physical characteristics The Lightcurve Data Base assumes Zamenhof to be a common, carbonaceous C-type asteroid, in agreement with the overall spectral type of the Themis family.23 Rotation period Two rotational lightcurves of Zamenhof were obtained from photometric observations in 2006 and 2011. Lightcurve analysis gave a rotation period of 10.2 and 10.4 hours with a brightness amplitude of 0.15 and 0.30 magnitude, respectively (U=2/2). Diameter and albedo According to the surveys carried out by the Japanese Akari satellite and the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Zamenhof measures between 25.91 and 27.645 kilometers in diameter and its surface has an albedo between 0.087 and 0.121. The Collaborative Asteroid Lightcurve Link derives an albedo of 0.0891 and a diameter of 25.62 kilometers based on an absolute magnitude of 11.2. Naming This minor planet was named after L. L. Zamenhof (1859–1917), a Polish-Jewish ophthalmologist and creator of Esperanto, a constructed international language. This asteroid and 1421 Esperanto are considered to be the most remote Zamenhof-Esperanto objects (a monument or a place celebrating Zamenhof). The official 1462 naming citation was published by the Minor Planet Center in January 1956 (M.P.C. 1350). References 30em 2017-07-05 last obs. JPL Small-Body Database Browser: 1462 Zamenhof (1938 CA) https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2001462 Jet Propulsion Laboratory 20 October 2017 Schmadel Lutz D. Dictionary of Minor Planet Names Springer Berlin Heidelberg 117 2007 978-3-540-00238-3 10.1007/978-3-540-29925-7_1463 (1462) Zamenhof 1462 Zamenhof (1938 CA) Minor Planet Center https://www.minorplanetcenter.net/db_search/show_object?object_id=1462 20 October 2017 Dictionary of Minor Planet Names – Addendum to Fifth Edition (2006–2008) Appendix – Publication Dates of the MPCs Schmadel Lutz D. 2009 Springer Berlin Heidelberg 221 978-3-642-01964-7 10.1007/978-3-642-01965-4 Asteroids and comets rotation curves – (1462) Zamenhof Behrend Raoul Geneva Observatory http://obswww.unige.ch/~behrend/page4cou.html#001462 20 October 2017 3 August 2003 https://web.archive.org/web/20030803183423/http://obswww.unige.ch/~behrend/page4cou.html#001462 dead 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 20 October 2017 Asteroid 1462 Zamenhof – Nesvorny HCM Asteroid Families V3.0 Small Bodies Data Ferret https://sbntools.psi.edu/ferret/SimpleSearch/results.action?targetName=1462+Zamenhof#Asteroid%201462%20ZamenhofEAR-A-VARGBDET-5-NESVORNYFAM-V3.0 26 October 2019 October 2026 InternetArchiveBot 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 1462 20 October 2017 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 October 2017 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) 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 John Menke Walt Cooney John Gross Dirk Terrell David Higgins October 2008 Asteroid Lightcurve Analysis at Menke Observatory http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2008MPBu...35..155M The Minor Planet Bulletin 35 4 155–160 1052-8091 2008MPBu...35..155M 20 October 2017 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 20 October 2017 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 1462 1461 Jean-Jacques 1462 1463 Nordenmarkia 001462 Category:Discoveries by Yrjö Väisälä Category:L. L. Zamenhof Category:Named minor planets 19380206