1015 Christa

Asteroid March 2018 yes 1015 Christa #D6D6D6 K. Reinmuth Heidelberg Obs. 31 January 1924 (1015) Christa 1924 QFA916 UE unknown main-belt(outer)background 23 March 2018 (JD 2458200.5) 0 93.42 yr (34,123 d) 3.4848 AU 2.9262 AU 3.2055 AU 0.0871 5.74 yr (2,096 d) 232.16° 0.1717 ms / day 9.4449° 120.15° 286.50° 82.350 1.096 km95.51 27.79 km96.592 2.896 km96.94 3.6 km99.88 36.30 km101.04 1.37 km 4.77 0.68 10 kg 9.17 1.46 g/cm3 11.230 0.004 hlightcurve-plot-Warner12.189 0.001 h 0.04 0.040.042 0.0010.0459 0.0040.0463 0.00620.048 0.0090.064 0.016 Tholen CSMASS XcPB–V 0.693U–B 0.320 9.039.139.46 0.45 1015 Christa, provisional designation 1924 QF, is a dark background asteroid from the outermost regions of the asteroid belt, approximately 96 km mi off us in diameter. It was discovered on 31 January 1924, by German astronomer Karl Reinmuth at the Heidelberg-Königstuhl State Observatory in southwest Germany. The meaning of this asteroids's name is unknown. Orbit and classification Christa is a non-family asteroid from the main belt's background population. It orbits the Sun in the outermost asteroid belt at a distance of 2.9–3.5 AU once every 5 years and 9 months (2,096 days; semi-major axis of 3.21 AU). Its orbit has an eccentricity of 0.09 and an inclination of 9° with respect to the ecliptic. The asteroid was first observed as A916 UE at the Simeiz Observatory in October 1916. The body's observation arc begins at Heidelberg in February 1924, two days after its official discovery observation. Physical characteristics In the Tholen classification, Christa is a common C-type asteroid, while in the SMASS classification, it is a Xc-subtype that transitions from the carbonaceous C-type to the X-type asteroids. It has also been characterized as a primitive P-type asteroid by the Wide-field Infrared Survey Explorer (WISE). Rotation period In April 2005, a first rotational lightcurve of Christa was obtained from photometric observations by French amateur astronomers Raymond Poncy and René Roy. Lightcurve analysis gave a rotation period of 12.189 hours with a brightness variation of 0.20 magnitude (U=2). In January 2009, a refined period of 11.230 hours and an amplitude of 0.12 magnitude was measured by photometrist Brian Warner at his Palmer Divide Observatory in Colorado, United States (U=3-).lightcurve-plot-Warner 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 WISE telescope, Christa measures between 82.35 and 101.04 kilometers in diameter and its surface has a low albedo between 0.04 and 0.064. The Collaborative Asteroid Lightcurve Link adopts the results obtained by IRAS, that is, an albedo of 0.0459 with a diameter of 96.94 kilometers based on an absolute magnitude of 9.03. 1015 Christa has been observed to occult 8 stars between 2005 and 2023. Naming Any reference of Christa's name to a person or occurrence is unknown. It is one of 120 minor planets 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. Notes lightcurve-plot-Warner Lightcurve plot of (1015) Christa, Palmer Divide Observatory, B. D. Warner (2009). Summary figures at the LCDB References 30em 2017-07-05 last obs. JPL Small-Body Database Browser: 1015 Christa (1924 QF) https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2001015 Jet Propulsion Laboratory 3 March 2018 Dictionary of Minor Planet Names – (1015) Christa Schmadel Lutz D. Springer Berlin Heidelberg 87 2007 978-3-540-00238-3 10.1007/978-3-540-29925-7_1016 (1015) Christa 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 1015 Christa (1924 QF) Minor Planet Center https://www.minorplanetcenter.net/db_search/show_object?object_id=1015 3 March 2018 Asteroids and comets rotation curves – (1015) Christa Behrend Raoul Geneva Observatory http://obswww.unige.ch/~behrend/page3cou.html#001015 3 March 2018 3 December 2002 https://web.archive.org/web/20021203214643/http://obswww.unige.ch/~behrend/page3cou.html#001015 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 1015 Christa – Nesvorny HCM Asteroid Families V3.0 Small Bodies Data Ferret https://sbntools.psi.edu/ferret/SimpleSearch/results.action?targetName=1015+Christa 24 October 2019 October 2026 InternetArchiveBot B. Carry December 2012 Density of asteroids Planetary and Space Science 73 1 98–118 10.1016/j.pss.2012.03.009 2012P&SS...73...98C 1203.4336 119226456 See Table 1. 1015 3 March 2018 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 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 46350317 3 March 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 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 3 March 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) 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 Warner, Brian D. July 2009 Asteroid Lightcurve Analysis at the Palmer Divide Observatory: 2008 December – 2009 March http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2009MPBu...36..109W The Minor Planet Bulletin 36 3 109–116 1052-8091 2009MPBu...36..109W 3 March 2018 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 3 March 2018 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 1015 1014 Semphyra 1015 1016 Anitra 001015 Category:Discoveries by Karl Wilhelm Reinmuth Category:Named minor planets 001015 001015 19240131