1187 Afra

Main-belt asteroid October 2019 yes 1187 Afra #D6D6D6 001187-asteroid shape model (1187) Afra.png Modelled shape of Afra from its lightcurve 6 December 1929 K. Reinmuth Heidelberg Obs. (1187) Afra 1929 XC unknown main-belt(middle) background 31 May 2020 (JD 2459000.5) 0 90.16 yr (32,932 d) 3.2285 AU 2.0523 AU 2.6404 AU 0.2227 4.29 yr (1,567 d) 52.040° 0.2297 ms / day 10.697° 327.16° 74.956° 31.83 3.9 km 31.96 0.33 km 32.348 0.299 km 14.06993 0.00001 h 14.0701 0.0005 h 14.09 0.02 h 14.645 0.006 h 0.051 0.007 0.0527 0.053 SMASS X 11.50 1187 Afra (prov. designation: 1929 XC) is a dark background asteroid from the central regions of the asteroid belt. It was discovered by German astronomer Karl Reinmuth at Heidelberg Observatory on 6 December 1929. The X-type asteroid has a rotation period of 14.1 hours and measures approximately 32 km mi off 2 us in diameter. The origin of the asteroid's name remains unknown. Orbit and classification Afra is a non-family asteroid of the main belt's background population when applying the hierarchical clustering method to its proper orbital elements. It orbits the Sun in the central asteroid belt at a distance of 2.1–3.2 AU once every 4 years and 3 months (1,567 days; semi-major axis of 2.64 AU). Its orbit has an eccentricity of 0.22 and an inclination of 11° with respect to the ecliptic. The body's observation arc begins at Heidelberg in January 1930, seven weeks after its official discovery observation. Naming It is not known to what person, group of persons, or occurrence the name "Afra" refers to. Unknown meaning Among the many thousands of named minor planets, Afra is one of 120 asteroids, for which no official naming citation has been published. All of these low-numbered asteroids have numbers between 164 164 Eva and 1514 1514 Ricouxa and were discovered between 1876 and the 1930s, predominantly by astronomers Auguste Charlois, Johann Palisa, Max Wolf and Karl Reinmuth. Physical characteristics The lightcurve of Afra shows a periodicity of 14.09 0.02 hours, during which time the brightness of the object varies by 0.40 0.02 in magnitude. References 30em 2020-02-04 last obs. JPL Small-Body Database Browser: 1187 Afra (1929 XC) https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2001187 https://web.archive.org/web/20200918035857/https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2001187 dead 18 September 2020 Jet Propulsion Laboratory 14 March 2020 Dictionary of Minor Planet Names https://archive.org/details/dictionaryminorp00schm limited Schmadel Lutz D. Springer Berlin Heidelberg (1187) Afra 100 2007 10.1007/978-3-540-29925-7_1188 978-3-540-00238-3 Dictionary of Minor Planet Names – Fifth Revised and Enlarged revision Appendix 11 – Minor Planet Names with Unknown Meaning Schmadel Lutz D. Springer Berlin Heidelberg 927–929 2007 978-3-540-00238-3 Lutz D. Schmadel 1187 Afra (1929 XC) Minor Planet Center https://www.minorplanetcenter.net/db_search/show_object?object_id=1187 14 March 2020 Asteroids and comets rotation curves – (1187) Afra Behrend Raoul Geneva Observatory http://obswww.unige.ch/~behrend/page3cou.html#001187 14 March 2020 3 December 2002 https://web.archive.org/web/20021203214643/http://obswww.unige.ch/~behrend/page3cou.html#001187 dead 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 14 March 2020 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. K. Mainzer J. M. Bauer R. M. Cutri T. Grav E. A. Kramer J. R. Masiero C. R. Nugent S. M. Sonnett R. A. Stevenson E. L. Wright June 2016 NEOWISE Diameters and Albedos V1.0 https://sbnarchive.psi.edu/pds3/non_mission/EAR_A_COMPIL_5_NEOWISEDIAM_V1_0/data/neowise_mainbelt.tab NASA Planetary Data System 2016PDSS..247.....M 14 March 2020 1187 14 March 2020 Menke John Cooney Walt Gross John Terrell Dirk Higgins David October 2008 Asteroid Lightcurve Analysis at Menke Observatory Minor Planet Bulletin http://www.minorplanet.info/MPB/issues/MPB_35-4.pdf 35 4 155–160 2008MPBu...35..155M 1052-8091 17 March 2020 14 March 2020 https://web.archive.org/web/20200317170259/http://www.minorplanet.info/MPB/issues/MPB_35-4.pdf dead Ďurech J. Hanuš J. Oszkiewicz D. Vančo R. March 2016 Asteroid models from the Lowell photometric database Astronomy and Astrophysics 587 A48 2016A&A...587A..48D 0004-6361 10.1051/0004-6361/201527573 1601.02909 Clark Maurice July 2019 Asteroid Photometry from the Preston Gott Observatory Minor Planet Bulletin http://www.minorplanet.info/MPB/issues/MPB_46-3.pdf 46 3 346–349 2019MPBu...46..346C 1052-8091 9 June 2020 14 March 2020 https://web.archive.org/web/20200609000504/http://www.minorplanet.info/MPB/issues/MPB_46-3.pdf dead Asteroid 1187 Afra Small Bodies Data Ferret https://sbntools.psi.edu/ferret/SimpleSearch/results.action?targetName=1187+Afra 14 March 2020 4 October 2020 https://web.archive.org/web/20201004033718/https://sbntools.psi.edu/ferret/SimpleSearch/results.action?targetName=1187+Afra dead Asteroid 1187 Afra – Proper Elements AstDyS-2, Asteroids – Dynamic Site https://newton.spacedys.com/astdys/index.php?pc=1.1.6&n=1187 14 March 2020 External links Lightcurve Database Query (LCDB), at www.minorplanet.info 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 – Geneva Observatory, Raoul Behrend Discovery Circumstances: Numbered Minor Planets (1)-(5000) – Minor Planet Center 1187 1186 Turnera 1187 1188 Gothlandia 001187 Category:Discoveries by Karl Wilhelm Reinmuth Category:Named minor planets 001187 19291206