1681 Steinmetz

Main-belt asteroid October 2019 yes 1681 Steinmetz #D6D6D6 001681-asteroid shape model (1681) Steinmetz.png Shape model of Steinmetz from its lightcurve 23 November 1948 M. Laugier Nice Obs. (1681) Steinmetz 1948 WE1926 YA1936 BE1939 VC1945 ED1957 YH1958 AEA914 DB Julius Steinmetz(amateur astronomer) main-belt(middle) 4 September 2017 (JD 2458000.5) 0 103.18 yr (37,688 days) 3.2486 AU 2.1443 AU 2.6965 AU 0.2048 4.43 yr (1,617 days) 169.22° 0.2226 ms / day 7.2063° 94.373° 1.6555° 14.58 0.75 km16.159 0.342 km20.49 km (calculated) 8.99917 0.00007 h 0.10 (assumed)0.161 0.0410.204 0.024 Tholen = SSB–V = 0.878U–B = 0.447 11.37 0.3311.56 1681 Steinmetz, provisional designation 1948 WE, is a stony asteroid from the central region of the asteroid belt, approximately 16 kilometers in diameter. It was discovered on 23 November 1948, by French astronomer Marguerite Laugier at Nice Observatory in south-eastern France. It was named after German amateur astronomer Julius Steinmetz. Orbit and classification Steinmetz orbits the Sun in the central main-belt at a distance of 2.1–3.2 AU once every 4 years and 5 months (1,617 days). Its orbit has an eccentricity of 0.20 and an inclination of 7° with respect to the ecliptic. Steinmetz was first identified as A914 DB at Heidelberg Observatory in 1914, extending the body's observation arc by 34 years prior to its official discovery observation at Nice. Physical characteristics This asteroid is characterized as a common S-type asteroid in the Tholen classification. Rotation period In December 2006, Italian amateur astronomer Silvano Casulli obtained a rotational lightcurve of Steinmetz from photometric observations. It gave a well-defined rotation period of 8.99917 hours with a brightness variation of 0.42 magnitude (U=3). Diameter and albedo According to the surveys carried out by the Japanese Akari satellite and NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, Steinmetz measures 14.58 and 16.16 kilometers in diameter, and its surface has an albedo of 0.204 and 0.161, respectively. The Collaborative Asteroid Lightcurve Link assumes an albedo of 0.10 and calculates a diameter of 20.49 kilometers based on an absolute magnitude of 11.56. Naming According to a proposal by Otto Kippes, who verified the discovery, this minor planet was named after Julius Steinmetz (1893–1965), a German amateur astronomer, orbit computer, and pastor from Gerolfingen in Bavaria. The official naming citation was published by the Minor Planet Center on 1 October 1980 (M.P.C. 5523). References 2017-05-06 last obs. JPL Small-Body Database Browser: 1681 Steinmetz (1948 WE) https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2001681 Jet Propulsion Laboratory 6 June 2017 Dictionary of Minor Planet Names – (1681) Steinmetz Schmadel Lutz D. Springer Berlin Heidelberg 134 2007 978-3-540-00238-3 10.1007/978-3-540-29925-7_1682 (1681) Steinmetz 1681 Steinmetz (1948 WE) Minor Planet Center https://www.minorplanetcenter.net/db_search/show_object?object_id=1681 23 December 2016 MPC/MPO/MPS Archive Minor Planet Center https://www.minorplanetcenter.net/iau/ECS/MPCArchive/MPCArchive_TBL.html 23 December 2016 Asteroids and comets rotation curves – (1681) Steinmetz Behrend Raoul Geneva Observatory http://obswww.unige.ch/~behrend/page4cou.html#001681 23 December 2016 1 April 2019 https://web.archive.org/web/20190401181659/http://obswww.unige.ch/~behrend/page4cou.html#001681 dead 1681 23 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) 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 23 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 23 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 1681 1680 Per Brahe 1681 1682 Karel 001681 Category:Discoveries by Marguerite Laugier Category:Named minor planets 001681 19481123