1690 Mayrhofer

Main-belt asteroid October 2019 yes 1690 Mayrhofer #D6D6D6 8 November 1948 M. Laugier Nice Obs. (1690) Mayrhofer 1948 VB1932 WN1953 VC 21956 GN Karl Mayrhofer(amateur astronomer) main-belt(outer) 4 September 2017 (JD 2458000.5) 0 84.11 yr (30,723 days) 3.3376 AU 2.7395 AU 3.0386 AU 0.0984 5.30 yr (1,935 days) 24.198° 0.1861 ms / day 13.049° 230.45° 156.46° 31.18 0.49 km31.198 7.539 km31.63 km (derived)31.71 2.0 km33.810 1.378 km 19.0808 0.1110 h22.194 0.004 h 0.056 0.0120.0641 (derived)0.0767 0.0110.0792 0.03840.082 0.003 C 10.910.91 0.3410.950 0.004 (R)11.1 thumb|Karl Mayrhofer anno 1947 1690 Mayrhofer, provisional designation 1948 VB, is a carbonaceous asteroid from the outer region of the asteroid belt, approximately 32 kilometers in diameter. It was discovered on 8 November 1948, by French astronomer Marguerite Laugier at Nice Observatory in south-east France. It was later named after Austrian amateur astronomer Karl Mayrhofer. Orbit and classification The C-type asteroid orbits the Sun in the outer main-belt at a distance of 2.7–3.3 AU once every 5 years and 4 months (1,935 days). Its orbit has an eccentricity of 0.10 and an inclination of 13° with respect to the ecliptic. First identified as 1932 WN at Uccle, Mayrhofers observation arc begins with its first used observation taken at Goethe Link Observatory in 1953, or 5 years after its official discovery observation at Nice. Physical characteristics Rotation period In November 2006, a rotational lightcurve of Mayrhofer was obtained from observations taken by French amateur astronomer Pierre Antonini, giving a rotation period of 22.194 hours with a brightness variation of 0.45 in magnitude (U=2). Photometric observation in the R-band at the Palomar Transient Factory in November 2011, gave a shorter period of 19.0808 hours with an amplitude of 0.30 magnitude (U=2). 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, Mayrhofer measures between 31.18 and 33.81 kilometers in diameter, and its surface has an albedo between 0.056 and 0.082. The Collaborative Asteroid Lightcurve Link derives an albedo of 0.064 and a diameter of 31.63 kilometers based on an absolute magnitude of 11.1. Naming Proposed by German catholic priest and amateur astronomer Otto Kippes, this minor planet was named after Austrian amateur astronomer Karl Mayrhofer (1903–1982). He lived in the Austrian town of Ried im Innkreis and was known for his calculations of orbital elements for asteroids. Naming citation was published on 1 October 1980 (M.P.C. 5523). References 2017-01-09 last obs. JPL Small-Body Database Browser: 1690 Mayrhofer (1948 VB) https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2001690 Jet Propulsion Laboratory 6 June 2017 Dictionary of Minor Planet Names – (1690) Mayrhofer Schmadel Lutz D. Springer Berlin Heidelberg 134 2007 978-3-540-00238-3 10.1007/978-3-540-29925-7_1691 (1690) Mayrhofer 1690 Mayrhofer (1948 VB) Minor Planet Center https://www.minorplanetcenter.net/db_search/show_object?object_id=1690 19 December 2016 MPC/MPO/MPS Archive Minor Planet Center https://www.minorplanetcenter.net/iau/ECS/MPCArchive/MPCArchive_TBL.html 19 December 2016 Asteroids and comets rotation curves – (1690) Mayrhofer Behrend Raoul Geneva Observatory http://obswww.unige.ch/~behrend/page4cou.html#001690 19 December 2016 1 April 2019 https://web.archive.org/web/20190401181659/http://obswww.unige.ch/~behrend/page4cou.html#001690 dead 1690 19 December 2016 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 12 IRAS-A-FPA-3-RDR-IMPS-V6.0 2004PDSS...12.....T 22 October 2019 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 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 19 December 2016 6 Adam Waszczak Chan-Kao Chang Eran O. Ofek Russ Laher Frank Masci David Levitan Jason Surace Yu-Chi Cheng Wing-Huen Ip Daisuke Kinoshita George Helou Thomas A. Prince Shrinivas Kulkarni September 2015 Asteroid Light Curves from the Palomar Transient Factory Survey: Rotation Periods and Phase Functions from Sparse Photometry http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2015AJ....150...75W The Astronomical Journal 150 3 35 2015AJ....150...75W 10.1088/0004-6256/150/3/75 1504.04041 19 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 19 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 1690 1689 Floris-Jan 1690 1691 Oort 001690 Category:Discoveries by Marguerite Laugier Category:Named minor planets 19481108