1191 Alfaterna

Asteroid October 2019 yes 1191 Alfaterna #D6D6D6 11 February 1931 L. Volta Pino Torinese Obs. (1191) Alfaterna 1931 CA1965 AA æ l f ə ' t ɜr n əJames Knowles (1835) A Pronouncing and Explanatory Dictionary of the English Language Nuceria Alfaterna(ancient Roman town) main-belt(outer) 4 September 2017 (JD 2458000.5) 0 85.79 yr (31,335 days) 3.0286 AU 2.7567 AU 2.8927 AU 0.0470 4.92 yr (1,797 days) 178.01° 0.2003 ms / day 18.491° 134.73° 53.411° 38.92 13.94 km42.01 km (derived)42.09 3.0 km43.38 14.16 km46.11 0.63 km46.375 0.836 km47.397 0.175 km 3.664 h (removed)LCDB-Pray-201133.12 1.92 (tentative) 0.0297 0.00530.04 0.020.04 0.050.045 0.0080.0479 (derived)0.050 0.0020.0574 0.009 C 10.6010.7710.810.89 0.21 1191 Alfaterna, provisional designation 1931 CA, is a carbonaceous asteroid from the outer region of the asteroid belt, approximately 43 kilometers in diameter. It was discovered on 11 February 1931, by Italian astronomer Luigi Volta at the Observatory of Turin in northwestern Italy. The asteroid was named for the ancient Roman town of Nuceria Alfaterna. Orbit and classification Alfaterna orbits the Sun in the outer main-belt at a distance of 2.8–3.0 AU once every 4 years and 11 months (1,797 days). Its orbit has an eccentricity of 0.05 and an inclination of 18° with respect to the ecliptic. The first unused observation was taken at Heidelberg two nights prior to its discovery. The body's observation arc begins at Pino Torinese one week after its official discovery observation. Physical characteristics Alfaterna has been characterized as a carbonaceous C-type asteroid. Rotation period From 2005 to 2015, several astronomers such as Donald Pray, Henk de Groot and Raoul Behrend, Federico Manzini, as well as Laurent Bernasconi unsuccessfully tried to obtain a well-defined lightcurve of Alfaterna. While Pray derived a period of 3.664 hours with an amplitude of 0.05 magnitude (U=1),LCDB-Pray-2011 the European astronomers published a tentative period of 33.12 hours (U=n.a.). As of 2017, the body's spin rate effectively remains unknown. 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, Alfaterna measures between 38.92 and 47.397 kilometers in diameter and its surface has an albedo between 0.04 and 0.0574 (without preliminary results). The Collaborative Asteroid Lightcurve Link derives an albedo of 0.0479 and a diameter of 42.01 kilometers using an absolute magnitude of 10.8. Naming This minor planet is named for the ancient Roman town of "Nuceria Alfaterna", where now the town Nocera Inferiore/Superiore is located. The ancient city was founded between Pompeii and Salerno in 10th century BC. In 1957, the name was suggested by astronomer Alfonso Fresa at Turin Observatory. The official 1191 naming citation was published by the Minor Planet Center on 15 July 1968 (M.P.C. 2882). Notes LCDB-Pray-2011 Pray (2011) web: rotation period 3.664 hours with a brightness amplitude of 0.05 mag. Summary figures for (1191) Alfaterna at Collaborative Asteroid Lightcurve Link (CALL) had been removed; Period Flag "D" (no numerical value) and description "long?". A quality code of 1 was given. References 30em 2016-11-24 last obs. JPL Small-Body Database Browser: 1191 Alfaterna (1931 CA) https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2001191 Jet Propulsion Laboratory 26 July 2017 Dictionary of Minor Planet Names – (1191) Alfaterna Schmadel Lutz D. Springer Berlin Heidelberg 100 2007 978-3-540-00238-3 10.1007/978-3-540-29925-7_1192 (1191) Alfaterna 1191 Alfaterna (1931 CA) Minor Planet Center https://www.minorplanetcenter.net/db_search/show_object?object_id=1191 26 January 2017 Dictionary of Minor Planet Names – Addendum to Fifth Edition (2006–2008) Appendix – Publication Dates of the MPCs Schmadel Lutz D. 2009 Springer Berlin Heidelberg 221 978-3-642-01964-7 10.1007/978-3-642-01965-4 2009dmpn.book.....S Asteroids and comets rotation curves – (1191) Alfaterna Behrend Raoul Geneva Observatory http://obswww.unige.ch/~behrend/page3cou.html#001191 26 January 2017 3 December 2002 https://web.archive.org/web/20021203214643/http://obswww.unige.ch/~behrend/page3cou.html#001191 dead 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 119293330 26 January 2017 1191 26 January 2017 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 – IRAS-A-FPA-3-RDR-IMPS-V6.0 2004PDSS...12.....T 17 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 35447010 6 C. R. Nugent A. Mainzer J. Masiero J. Bauer R. M. Cutri T. Grav E. Kramer S. Sonnett R. Stevenson E. L. Wright December 2015 NEOWISE Reactivation Mission Year One: Preliminary Asteroid Diameters and Albedos http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2015ApJ...814..117N The Astrophysical Journal 814 2 13 2015ApJ...814..117N 10.1088/0004-637X/814/2/117 1509.02522 9341381 26 January 2017 6 C. R. Nugent A. Mainzer J. Bauer R. M. Cutri E. A. Kramer T. Grav J. Masiero S. Sonnett E. L. Wright September 2016 NEOWISE Reactivation Mission Year Two: Asteroid Diameters and Albedos The Astronomical Journal 152 3 12 2016AJ....152...63N 10.3847/0004-6256/152/3/63 1606.08923 free 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 53493339 26 January 2017 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/20160729213840/http://obswww.unige.ch/~behrend/page_cou.html 29 July 2016 – Observatoire de Genève, Raoul Behrend Discovery Circumstances: Numbered Minor Planets (1)-(5000) – Minor Planet Center 1191 1190 Pelagia 1191 1192 Prisma 001191 Category:Discoveries by Luigi Volta Category:Named minor planets 001191 19310211