1704 Wachmann

Main-belt asteroid October 2019 yes 1704 Wachmann #D6D6D6 1704Wachmann (Lightcurve Inversion).png Light curve based 3D-model of Wachmann padding: 5px 0; 7 March 1924 K. Reinmuth Heidelberg Obs. (1704) Wachmann A924 EE1947 CE1957 BJ Arno Wachmann(German astronomer) main-belt(inner) 4 September 2017 (JD 2458000.5) 0 93.16 yr (34,026 days) 2.4163 AU 2.0292 AU 2.2228 AU 0.0871 3.31 yr (1,210 days) 67.047° 0.2974 ms / day 0.9715° 259.47° 280.77° 6.618 0.0706.934 0.070 km7.82 km (calculated) 3.314 0.001 h 0.1767 0.01330.193 0.0360.20 (assumed) S 12.912.97 0.1313.3 1704 Wachmann, provisional designation A924 EE, is a stony asteroid from the inner regions of the asteroid belt, approximately 7 kilometers in diameter. It was discovered by German astronomer Karl Reinmuth at Heidelberg Observatory on 7 March 1924. It was later named after astronomer Arno Wachmann. Classification and orbit The S-type asteroid orbits the Sun in the inner main-belt at a distance of 2.0–2.4 AU once every 3 years and 4 months (1,210 days). Its orbit has an eccentricity of 0.09 and an inclination of 1° with respect to the ecliptic. No precoveries were taken. The asteroid's observation arc begins 3 days after its official discovery observation. Physical characteristics Lightcurves In April 2007, a rotational lightcurve Wachmann was obtained at the U.S. Sandia View Observatory in New Mexico (H03). Lightcurve analysis gave a well-defined rotation period of 3.314 0.001 hours with a brightness variation of 0.40 magnitude (U=3). Diameter and albedo According to the survey carried out by the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Wachmann measures 6.6 and 6.9 kilometers in diameter, and its surface has an albedo of 0.177 and 0.193, respectively, while the Collaborative Asteroid Lightcurve Link assumes a standard albedo for stony asteroids of 0.20 and calculates a diameter of 7.8 kilometers, based on an absolute magnitude of 12.9. Naming This minor planet was named for Arno Wachmann (1902–1990), long-time astronomer at the Bergedorf Observatory in Hamburg, discoverer of minor planets and comets, and observer of variable and binary stars. He is best known for the co-discovery of the three "Schwassmann–Wachmann" comets, 29P, 31P and 73P. The official 1704 naming citation was published by the Minor Planet Center on 20 February 1976 (M.P.C. 3933). References 2017-05-05 last obs. JPL Small-Body Database Browser: 1704 Wachmann (A924 EE) https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2001704 Jet Propulsion Laboratory 7 June 2017 Dictionary of Minor Planet Names – (1704) Wachmann Schmadel Lutz D. Springer Berlin Heidelberg 135–136 2007 978-3-540-00238-3 10.1007/978-3-540-29925-7_1705 (1704) Wachmann 1704 Wachmann (A924 EE) Minor Planet Center https://www.minorplanetcenter.net/db_search/show_object?object_id=1704 20 July 2016 Dictionary of Minor Planet Names – Addendum to Fifth Edition (2006–2008) 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 1704 20 July 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 Julian, II William M. March 2008 Period Determination for 1704 Wachmann http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2008MPBu...35....4J The Minor Planet Bulletin 35 1 4 1052-8091 2008MPBu...35....4J 20 July 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 20 July 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 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/20241208174218/http://obswww.unige.ch/~behrend/page_cou.html 8 December 2024 – Observatoire de Genève, Raoul Behrend Discovery Circumstances: Numbered Minor Planets (1)-(5000) – Minor Planet Center 1704 1703 Barry 1704 1705 Tapio 001704 Category:Discoveries by Karl Wilhelm Reinmuth Category:Named minor planets 19240307