1739 Meyermann

Main-belt asteroid October 2019 yes 1739 Meyermann #D6D6D6 15 August 1939 K. Reinmuth Heidelberg Obs. (1739) Meyermann 1939 PF1929 TB 11935 GN1952 HN 31953 XO 11963 TG Bruno Meyermann(German astronomer) main-beltFlora 4 September 2017 (JD 2458000.5) 0 87.57 yr (31,984 days) 2.5407 AU 1.9812 AU 2.2610 AU 0.1237 3.40 yr (1,242 days) 26.730° 0.2899 ms / day 3.4093° 203.35° 82.116° 6.62 0.79 km7.47 km (calculated)7.858 0.1248.688 0.063 km 2.8212 0.0002 hLCDB-Pravce-20142.8219 0.0002 hLCDB-Pravce-2007 0.1961 0.03760.24 (assumed)0.254 0.0150.336 0.116 S 12.63 0.2712.712.8 1739 Meyermann, provisional designation 1939 PF, is a stony Florian asteroid from the inner regions of the asteroid belt, approximately 7.5 kilometers in diameter. It was discovered by German astronomer Karl Reinmuth at Heidelberg Observatory on 15 August 1939. It was later named in memory of astronomer Bruno Meyermann. Orbit and classification Meyermann is a member of the Flora family, a large group of S-type asteroids in the inner main-belt. It orbits the Sun at a distance of 2.0–2.5 AU once every 3 years and 5 months (1,242 days). Its orbit has an eccentricity of 0.12 and an inclination of 3° with respect to the ecliptic. Meyermann was first identified as 1929 TB 1 at Lowell Observatory in 1929, extending the body's observation arc by 10 years prior to its official discovery observation at Heidelberg. Rotation period Two rotational lightcurves of Meyermann were obtained from photometric observations taken by Czech astronomer Petr Pravec at Ondřejov Observatory in 2007 and 2014. They gave a rotation period of 2.8212 and 2.8219 hours with a brightness variation of 0.12 and 0.17 magnitude, respectively (U=3/3).LCDB-Pravce-2014LCDB-Pravce-2007 Diameter and albedo According to the refitted 2014-results from the survey carried out by the Wide-field Infrared Survey Explorer with its NEOWISE missions, Meyermann measures 7.858 kilometers in diameter, and its surface has an albedo of 0.254. 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 7.47 kilometers based on an absolute magnitude of 12.8. Naming This minor planet was named in memory of Bruno Meyermann (1876–1963), a classical astronomer and academic teacher at Göttingen Observatory in Lower Saxony, Germany. His fields of interest included polar motion and relativistic effects. The official 1739 naming citation was published by the Minor Planet Center on 18 April 1977 (M.P.C. 4155). Notes LCDB-Pravce-2007 Pravec (2007) web: rotation period 2.8219 0.0002 hours with a brightness amplitude of 0.22. Quality Code of 3. Summary figures at Asteroid Lightcurve Database LCDB-Pravce-2014 Pravec (2014) web: rotation period 2.8212 0.0002 hours with a brightness amplitude of 0.17. Quality Code of 3. Summary figures at Asteroid Lightcurve Database References 30em 2017-05-05 last obs. JPL Small-Body Database Browser: 1739 Meyermann (1939 PF) https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2001739 Jet Propulsion Laboratory 7 June 2017 Dictionary of Minor Planet Names – (1739) Meyermann Schmadel Lutz D. Springer Berlin Heidelberg 138 2007 978-3-540-00238-3 10.1007/978-3-540-29925-7_1740 (1739) Meyermann 1739 Meyermann (1939 PF) Minor Planet Center https://www.minorplanetcenter.net/db_search/show_object?object_id=1739 20 December 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 1739 20 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 20 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 20 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 20 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 1739 1738 Oosterhoff 1739 1740 Paavo Nurmi 001739 Category:Discoveries by Karl Wilhelm Reinmuth Category:Named minor planets 19390815