1245 Calvinia

Koronian asteroid December 2018 yes 1245 Calvinia #D6D6D6 File:001245-asteroid shape model (1245) Calvinia.png Shape model of Calvinia from its lightcurve C. Jackson Johannesburg Obs. 26 May 1932 (1245) Calvinia 1932 KF1948 VT1950 CPA906 FBA914 YBA916 DCA917 KE Calvinia(South African city) main-belt(outer)backgroundKoronis 27 April 2019 (JD 2458600.5) 0 112.59 yr (41,125 d) 3.1302 AU 2.6536 AU 2.8919 AU 0.0824 4.92 yr (1,796 d) 137.36° 0.2004 ms / day 2.8936° 151.72° 208.24° 26.84 3.5 km29.751 0.204 km30.444 0.137 km30.95 0.78 km 4.8523 0.0001 h 0.2140.22020.2210.2713 Tholen SB–V 0.847U–B 0.474 9.899.910.11 0.03 1245 Calvinia (prov. designation: 1932 KF) is a stony Koronian asteroid from the outer regions of the asteroid belt, approximately 30 km mi off 2 us in diameter. It was discovered on 26 May 1932, by South African astronomer Cyril Jackson at the Union Observatory in Johannesburg. The S-type asteroid is likely elongated and has a rotation period of 4.9 hours. It was named for the city of Calvinia in South Africa. Orbit and classification According to Zappalà, Mothé-Diniz, as well as Milani and Knežević, Calvinia is a member of the Koronis family (605), a very large outer asteroid family with nearly co-planar ecliptical orbits. Interestingly, in one of the most recent and complete synthetic HCM-analysis by Nesvorný, Calvinia is not a Koronian asteroid but belongs to the background population. It orbits the Sun in the outer main-belt at a distance of 2.7–3.1 AU once every 4 years and 11 months (1,796 days; semi-major axis of 2.89 AU). Its orbit has an eccentricity of 0.08 and an inclination of 3° with respect to the ecliptic. The asteroid was first observed as A906 FB at the Heidelberg Observatory in March 1906. The body's observation arc begins with its official discovery observation at Johannesburg in May 1932. Naming This minor planet was named after the regional city Calvinia in the Cape Province of South Africa. The official 1245 naming citation was mentioned in The Names of the Minor Planets by Paul Herget in 1955 (H 115). Physical characteristics In the Tholen classification, Calvinia is a common stony S-type asteroid, which is also the overall spectral type for members of the Koronis family.23 In the Barucci taxonomy (1987), it is an S0-type asteroid. Rotation period In October 2017, a rotational lightcurve of Calvinia was obtained from photometric observations by Romain Montaigut, Christophe Gillier and Arnaud Leroy. Lightcurve analysis gave a rotation period of 4.8523 0.0001 hours with a brightness variation of 0.28 magnitude (U=3). Other rotational were obtained by (ordered by increasing period determinations ) Brines (4.73 h; Δ0.35 mag; U=3-) in 2016, by Lagerkvist (4.8 h; Δ0.52 mag; U=2) and (4.85 h; Δ0.7 mag; U=2) in 1975 and 1978, respectively, by Erikson (4.84 h; U=3) in 1990, by Slivan (4.8512 h; Δ0.37 mag; U=3) in 2002, by Roy (4.85129 h; Δ0.50 mag; U=3-), and by Tedesco (4.855 h; Δ0.63 mag; U=3) in 1979. A modeled lightcurve using photometric data from the Lowell Photometric Database was published in 2016. It gave a concurring period of 4.85148 0.00001 hours, as well as two spin axes at (52.0°, −51.0°) and (235.0°, −43.0°) in ecliptic coordinates (λ, β). Diameter and albedo According to the surveys carried out by the Infrared Astronomical Satellite IRAS, the Japanese Akari satellite and the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Calvinia measures between 26.84 and 30.95 kilometers in diameter and its surface has an albedo between 0.214 and 0.2713. The Collaborative Asteroid Lightcurve Link derives an albedo of 0.2689 and a diameter of 26.83 kilometers based on an absolute magnitude of 9.9. References 30em 2018-10-20 last obs. JPL Small-Body Database Browser: 1245 Calvinia (1932 KF) https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2001245 Jet Propulsion Laboratory 15 December 2018 Dictionary of Minor Planet Names Schmadel Lutz D. Springer Berlin Heidelberg (1245) Calvinia 103 2007 10.1007/978-3-540-29925-7_1246 978-3-540-00238-3 1245 Calvinia (1932 KF) Minor Planet Center https://www.minorplanetcenter.net/db_search/show_object?object_id=1245 15 December 2018 Asteroids and comets rotation curves – (1245) Calvinia Behrend Raoul Geneva Observatory http://obswww.unige.ch/~behrend/page3cou.html#001245 15 December 2018 23 April 2019 https://web.archive.org/web/20190423121547/http://obswww.unige.ch/~behrend/page3cou.html#001245 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 The Astrophysical Journal 791 2 11 2014ApJ...791..121M 10.1088/0004-637X/791/2/121 1406.6645 119293330 Asteroid (1245) Calvinia – Proper elements AstDyS-2, Asteroids – Dynamic Site https://newton.spacedys.com/astdys/index.php?n=1245&pc=1.1.6 14 December 2018 Asteroid 1245 Calvinia Small Bodies Data Ferret https://sbntools.psi.edu/ferret/SimpleSearch/results.action?targetName=1245+Calvinia 15 December 2018 https://web.archive.org/web/20181215121118/https://sbntools.psi.edu/ferret/SimpleSearch/results.action?targetName=1245+Calvinia 15 December 2018 dead D. Nesvorný M. Broz V. Carruba December 2014 Identification and Dynamical Properties of Asteroid Families Asteroids IV 297–321 2015aste.book..297N 10.2458/azu_uapress_9780816532131-ch016 1502.01628 9780816532131 119280014 1245 15 December 2018 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 EAR–A–COMPIL–5–NEOWISEDIAM–V1.0 2016PDSS..247.....M 15 December 2018 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) 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 IRAS–A–FPA–3–RDR–IMPS–V6.0 2004PDSS...12.....T 15 December 2018 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 (catalog) Lagerkvist, C.-I. March 1978 Photographic photometry of 110 main-belt asteroids Astronomy and Astrophysics Supplement Series 31 361–381 1978A&AS...31..361L Lagerkvist, C.-I. December 1977 Photographic Photometry of the Asteroids 716 Berkeley and 1245 Calvinia Astronomy and Astrophysics Supplement 34 203 1978A&AS...34..203L Erikson, A. December 1989 Improvement of Rotation Periods for the Asteroids 12 Victoria, 173 Ino and 1245 Calvinia Asteroids 55 1990acm..proc...55E 6 Stephen M. Slivan Richard P. Binzel Shaida C. Boroumand Margaret W. Pan Christine M. Simpson James T. Tanabe Rosalinda M. Villastrigo Lesley L. Yen Richard P. Ditteon Donald P. Pray Robert D. Stephens May 2008 Rotation rates in the Koronis family, complete to H≈11.2 Icarus 195 1 226–276 2008Icar..195..226S 10.1016/j.icarus.2007.11.019 J. Durech J. Hanus D. Oszkiewicz R. Vanco March 2016 Asteroid models from the Lowell photometric database Astronomy and Astrophysics 587 6 2016A&A...587A..48D 10.1051/0004-6361/201527573 1601.02909 118427201 6 Brines Pedro Lozano Juan Rodrigo Onofre Fornas A. Herrero David Mas Vicente Fornas G. Carreño A. Arce Enrique April 2017 Sixteen Asteroids Lightcurves at Asteroids Observers (OBAS) - MPPD: 2016 June–November Minor Planet Bulletin http://www.minorplanet.info/MPB/issues/MPB_44-2.pdf 44 2 145–149 2017MPBu...44..145B 1052-8091 15 March 2020 22 March 2020 https://web.archive.org/web/20200322001411/http://www.minorplanet.info/MPB/issues/MPB_44-2.pdf dead 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 1245 1244 Deira 1245 1246 Chaka 001245 001245 Category:Discoveries by Cyril Jackson (astronomer) Category:Named minor planets 001245 19320526