19848 Yeungchuchiu

Main-belt asteroid October 2019 yes 19848 Yeungchuchiu #D6D6D6 019848-asteroid shape model (19848) Yeungchuchiu.png Yeungchuchiu modeled from its lightcurve W. K. Yeung Desert Beaver Obs. 2 October 2000 (19848) Yeungchuchiu 2000 TR1998 KR 381999 SY 6 Chu Chiu Yeung(discoverer's father) main-beltEos 4 September 2017 (JD 2458000.5) 0 34.82 yr (12,718 days) 3.2372 AU 2.7768 AU 3.0070 AU 0.0766 5.21 yr (1,905 days) 94.290° 0.1890 ms / day 11.061° 54.759° 350.16° 11.69 0.55 km12.700 0.13412.90 km (calculated)13.242 0.282 km 3.450 0.002 h3.4508 0.0003 h 0.14 (assumed)0.170 0.0200.2107 0.0250 S 12.211.712.227 0.002 (R)12.49 0.28 19848 Yeungchuchiu (provisional designation 2000 TR) is a stony Eos asteroid from the outer region of the asteroid belt, approximately 12 km mi off 2 us in diameter. It was discovered on 2 October 2000 by Canadian amateur astronomer William Yeung at the Desert Beaver Observatory in Arizona, United States. It is the largest object found by the discoverer, just 1°.2 west of Jupiter, who named it after his father, Chu Chiu Yeung. Orbit and classification Yeungchuchiu is a member of the Eos family, an orbital group of more than 4,000 asteroids, which are known for mostly being of stony composition. It orbits the Sun in the outer main-belt at a distance of 2.8–3.2 AU once every 5 years and 3 months (1,905 days). Its orbit has an eccentricity of 0.08 and an inclination of 11° with respect to the ecliptic. The first precovery was taken at the Australian Siding Spring Observatory in 1982, extending the asteroid's observation arc by 18 years prior to its discovery. Naming This minor planet was named by the discoverer after his father, Chu Chiu Yeung (born 1925), in gratitude for his unconditional support. The approved naming citation was published by the Minor Planet Center on 9 March 2001 (M.P.C. 42368). Physical characteristics Rotation period thumb|left|275px|Lightcurve based 3D-model of Yeungchuchiu In November 2005, a rotational lightcurve of Yeungchuchiu was obtained from photometric observations by the discoverer at the Desert Eagle Observatory in Arizona. Lightcurve analysis gave a well-defined rotation period of 3.450 hours with a brightness variation of 0.70 magnitude (U=3). The large amplitude suggests that the body is of non-spherical shape and that the long axis is almost twice as long as the short axis. It is likely that the rotational axis was almost perpendicular to the observation's line-of-sight. A second lightcurve was obtained at the Palomar Transient Factory in September 2010, and gave a concurring period of 3.4508 0.0003 hours with an amplitude of 0.63 in magnitude (U=2). Diameter and albedo According to the survey carried out by NASA's Wide-field Infrared Survey Explorer and its subsequent NEOWISE mission, the asteroid measures 11.7 and 13.2 kilometers in diameter with an albedo for its surface of 0.17 and 0.21, respectively. The Collaborative Asteroid Lightcurve Link assumes an albedo for stony asteroids of 0.21 and calculates a diameter of 12.9 kilometers with an absolute magnitude of 12.2. References 30em 2017-05-04 last obs. JPL Small-Body Database Browser: 19848 Yeungchuchiu (2000 TR) https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2019848 Jet Propulsion Laboratory 27 June 2017 Dictionary of Minor Planet Names Schmadel Lutz D. Springer Berlin Heidelberg (19848) Yeungchuchiu 859 2007 978-3-540-00238-3 10.1007/978-3-540-29925-7_9589 19848 Yeungchuchiu (2000 TR) Minor Planet Center https://www.minorplanetcenter.net/db_search/show_object?object_id=19848 1 January 2016 MPC/MPO/MPS Archive Minor Planet Center https://www.minorplanetcenter.net/iau/ECS/MPCArchive/MPCArchive_TBL.html 17 May 2016 19848 17 May 2016 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 http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2011ApJ...741...90M The Astrophysical Journal 741 2 25 2011ApJ...741...90M 10.1088/0004-637X/741/2/90 1109.6407 17 May 2016 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 17 May 2016 Yeung, Kwong W. September 2006 Lightcurve analysis for 19848 Yeungchuchiu http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2006MPBu...33...49Y The Minor Planet Bulletin 33 3 49 1052-8091 2006MPBu...33...49Y 17 May 2016 6 Adam Waszczak Chan-Kao Chang Eran O. Ofek Russ Laher Frank Masci David Levitan Jason Surace Yu-Chi Cheng Wing-Huen Ip Daisuke Kinoshita George Helou Thomas A. Prince Shrinivas Kulkarni September 2015 Asteroid Light Curves from the Palomar Transient Factory Survey: Rotation Periods and Phase Functions from Sparse Photometry http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2015AJ....150...75W The Astronomical Journal 150 3 35 2015AJ....150...75W 10.1088/0004-6256/150/3/75 1504.04041 17 May 2016 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 17 May 2016 6 Joseph R. Masiero A. K. Mainzer T. Grav J. M. Bauer R. M. Cutri J. Dailey P. R. M. Eisenhardt R. S. McMillan T. B. Spahr M. F. Skrutskie D. Tholen R. G. Walker E. L. Wright E. DeBaun D. Elsbury T. IV Gautier S. Gomillion A. Wilkins November 2011 Main Belt Asteroids with WISE/NEOWISE. I. Preliminary Albedos and Diameters http://adsabs.harvard.edu/cgi-bin/bib_query?bibcode=2011ApJ...741...68M The Astrophysical Journal 741 2 20 2011ApJ...741...68M 10.1088/0004-637X/741/2/68 1109.4096 3 December 2016 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 (15001)-(20000) – Minor Planet Center 19848 19848 019848 Category:Discoveries by William K. Y. Yeung Category:Named minor planets 20001002