161 Athor

Main-belt asteroid September 2018 yes #D6D6D6 161 Athor 161Athor (Lightcurve Inversion).png A three-dimensional model of 161 Athor based on its lightcurve http://www.cfa.harvard.edu/iau/lists/NumberedMPs000001.html Discovery Circumstances: Numbered Minor Planets (1)-(5000) 20 December 2008 IAU: Minor Planet Center https://web.archive.org/web/20090202185140/http://www.cfa.harvard.edu/iau/lists/NumberedMPs000001.html 2 February 2009 James Craig Watson Detroit Observatory 19 April 1876 (161) Athor A876 HA; 1899 TA;1961 PF; 1973 YN 4 ' æ θ ər,Noah Webster (1884) A Practical Dictionary of the English Language ' ɑː θ ərHathor, Athor Hathor Main belthttps://ssd.jpl.nasa.gov/tools/sbdb_lookup.html#/?sstr=161 https://web.archive.org/web/20200820123100/https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=161;cad=1 live 20 August 2020 161 Athor JPL Small-Body Database NASA/Jet Propulsion Laboratory 12 May 2016 https://newton.spacedys.com/astdys/index.php?pc=1.1.0&n=161 (161) Athor 20 December 2008 AstDyS University of Pisa Italy 31 July 2016 (JD 2457600.5) 2.70593 AU Gm on on 2.05285 AU Gm on 2024-Jan-13 2.37939 AU Gm on 0.137237 3.67 yr (1340.6 d) 9.05986° 18.6090° 348.807° 295.007° 44.19 3.3 kmMean diameter47.0 0.2 kmcircular fithttp://www.psi.edu/pds/resource/occ.html Dunham Herald amp Asteroid Occultations 27 December 2008 EAR-A-3-RDR-OCCULTATIONS-V6.0 Planetary Data System 2008 medic 7.280 h d on on7.281 ± 0.001 hours2008MPBu...35..147P Pilcher Higgins amp Period Determination for 161 Athor The Minor Planet Bulletin 35 4 147 2008 7.288 ± 0.007 hours1980A&AS...42...85D Debehogne Zappala amp Photoelectric lightcurves of the asteroids 139 Juewa and 161 Athor, obtained with the 50 CM photometric telescope at ESO, La Silla Astronomy and Astrophysics Supplement Series 42 85–89 1980 0.1980 0.033http://www.psi.edu/pds/resource/imps.html Tedesco Supplemental IRAS Minor Planet Survey (SIMPS) 27 December 2008 IRAS-A-FPA-3-RDR-IMPS-V6.0 Planetary Data System 2004 https://web.archive.org/web/20090817051318/http://www.psi.edu/pds/resource/imps.html 17 August 2009 dead etal Mhttp://www.psi.edu/pds/resource/taxonomy.html Neese Asteroid Taxonomy 27 December 2008 EAR-A-5-DDR-TAXONOMY-V5.0 Planetary Data System 2005 https://web.archive.org/web/20090805185511/http://www.psi.edu/pds/resource/taxonomy.html 5 August 2009 dead 9.15http://www.psi.edu/pds/resource/astermag.html Tholen Asteroid Absolute Magnitudes 27 December 2008 EAR-A-5-DDR-ASTERMAG-V11.0. Planetary Data System 2007 https://web.archive.org/web/20090816200758/http://www.psi.edu/pds/resource/astermag.html 16 August 2009 dead 0.268538 ms / day 116.50 yr (42551 d) 0 161 Athor is an M-type Main belt asteroid that was discovered by James Craig Watson on 19 April 1876, at the Detroit Observatory and named after Hathor, an Egyptian fertility goddess. It is the namesake of a proposed Athor asteroid family, estimated to be ~3 billion years old. Photometric observations of the minor planet in 2010 gave a rotation period of 7.2798 0.0001 h with an amplitude of 0.19 0.02 in magnitude. This result is consistent with previous determinations. An occultation by Athor was observed, on 15 October 2002, showing an estimated diameter of 47.0 km. The spectra is similar to that of carbonaceous chondrites, with characteristics of ferric oxides and little or no hydrated minerals. References 30em Rotation Period Determinations for 28 Bellona, 81 Terpsichore, 126 Velleda 150 Nuwa, 161 Athor, 419 Aurelia, and 632 Pyrrha Pilcher Frederick The Minor Planet Bulletin 38 3 156−158 July 2011 2011MPBu...38..156P . On the spectral similarity of carbonaceous chondrites and some hydrated and oxidized asteroids Busarev V. V. Taran M. N. Proceedings of Asteroids, Comets, Meteors - ACM 2002. International Conference, 29 July - 2 August 2002, Berlin, Germany. Ed. Barbara Warmbein. ESA SP-500. Noordwijk, Netherlands ESA Publications Division 92-9092-810-7 November 2002 933−936 2002ESASP.500..933B . Ancient and primordial collisional families as the main sources of X-type asteroids of the inner main belt 1 Delbo Marco Avdellidou Chrysa Morbidelli Alessandro Astronomy & Astrophysics 624 A69 21 April 2019 10.1051/0004-6361/201834745 1902.01633 2019A&A...624A..69D . External links 161 160 Una 161 162 Laurentia 000161 Category:Discoveries by James Craig Watson Category:Named minor planets 000161 000161 18760419