(38984) 2000 UZ4

Carbonaceous asteroid April 2018 yes (38984) 2000 UZ 4 #D6D6D6 LINEAR Lincoln Lab's ETS 24 October 2000 (38984) 2000 UZ 4 main-belt(outer)Zhongguo2:1 res 23 March 2018 (JD 2458200.5) 0 20.39 yr (7,447 d) 4.1195 AU 2.5141 AU 3.3168 AU 0.2420 6.04 yr (2,206 d) 312.38° 0.1632 ms / day 0.4882° 59.710° 357.34° 4.87 km (calculated) 19.20 0.390 h 0.057 (assumed) C 14.614.840 0.190 (R)15.19 0.1415.29 (38984) 2000 UZ 4 is a carbonaceous Zhongguo asteroid from the outermost regions of the asteroid belt, approximately 5 km mi off 1 us in diameter. It was discovered on 24 October 2000, by astronomers with Lincoln Near-Earth Asteroid Research at the Lincoln Laboratory's Experimental Test Site near Socorro, New Mexico, in the United States. The likely elongated C-type asteroid has a rotation period of 19.20 hours. Orbit and classification 2000 UZ 4 is a non-family asteroid from the main belt's background population, and a member of the small group of Zhongguo asteroids, located in the Hecuba gap and locked in a 2:1 mean-motion resonance with the gas giant Jupiter. Contrary to the nearby unstable Griqua group, the orbits of the Zhongguos are stable over half a billion years. It orbits the Sun in the outer main-belt at a distance of 2.5–4.1 AU once every 6.04 years (2,206 days; semi-major axis of 3.32 AU). Its orbit has an eccentricity of 0.24 and an inclination of 0° with respect to the ecliptic. The body's observation arc begins with a precovery taken by Spacewatch in February 1996, more than 4 years prior to its official discovery observation at Socorro. Physical characteristics 2000 UZ 4 has been characterized as a carbonaceous C-type asteroid by Pan-STARRS large-scale survey. Rotation period In January 2014, a rotational lightcurve of this asteroid was obtained from photometric observations in the R-band by astronomers at the Intermediate Palomar Transient Factory in California. Lightcurve analysis gave a rotation period of 19.20 hours with a high brightness amplitude of 0.70 magnitude, indicative of an elongated shape (U=2). Diameter and albedo The Collaborative Asteroid Lightcurve Link assumes a standard albedo for carbonaceous asteroids of 0.057 and calculates a diameter of 4.87 kilometers based on an absolute magnitude of 15.29. Numbering and naming This minor planet was numbered by the Minor Planet Center on 28 March 2002, after its orbit had sufficiently been secured (M.P.C. 45198). As of 2018, it has not been named. References 30em 2016-07-01 last obs. JPL Small-Body Database Browser: 38984 (2000 UZ4) https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2038984 Jet Propulsion Laboratory 26 April 2018 38984 (2000 UZ4) Minor Planet Center https://www.minorplanetcenter.net/db_search/show_object?object_id=38984 26 April 2018 MPC/MPO/MPS Archive Minor Planet Center https://www.minorplanetcenter.net/iau/ECS/MPCArchive/MPCArchive_TBL.html 26 April 2018 Asteroid (38984) 2000 UZ4 – Proper Elements AstDyS-2, Asteroids – Dynamic Site https://newton.spacedys.com/astdys/index.php?pc=1.1.6&n=38984 29 October 2019 F. Roig D. Nesvorný S. Ferraz-Mello September 2002 Asteroids in the 2 : 1 resonance with Jupiter: dynamics and size distribution Monthly Notices of the Royal Astronomical Society 335 2 417–431 2002MNRAS.335..417R 10.1046/j.1365-8711.2002.05635.x free 38984 26 April 2018 6 Chan-Kao Chang Wing-Huen Ip Hsing-Wen Lin Yu-Chi Cheng Chow-Choong Ngeow Ting-Chang Yang Adam Waszczak Shrinivas R. Kulkarni David Levitan Branimir Sesar Russ Laher Jason Surace Thomas. A. Prince August 2015 Asteroid Spin-rate Study Using the Intermediate Palomar Transient Factory The Astrophysical Journal Supplement Series 219 2 19 2015ApJS..219...27C 10.1088/0067-0049/219/2/27 1506.08493 17093124 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 Icarus 261 34–47 2015Icar..261...34V 10.1016/j.icarus.2015.08.007 1506.00762 53493339 External links Asteroid Lightcurve Database (LCDB), query form (info https://web.archive.org/web/20171216050541/http://www.minorplanet.info/lightcurvedatabase.html 16 December 2017 ) Discovery Circumstances: Numbered Minor Planets (35001)-(40000) – Minor Planet Center 38984 2038984 38984 (38984) 2000 UZ 4 038984 038984 038984 20001024