(89830) 2002 CE

Near-Earth asteroid September 2020 yes (89830) 2002 CE #FFC2E0 LINEAR Lincoln Lab's ETS 1 February 2002 (89830) 2002 CE AmorNEOPHA 4 September 2017 (JD 2458000.5) 0 34.91 yr (12,752 days) 3.1314 AU 1.0234 AU 2.0774 AU 0.5074 2.99 yr (1,094 days) 117.79° 0.3292 ms / day 43.701° 19.934° 5.7062° 0.0277 AU10.8 LD 3.11 km (calculated)5.067 2.155 km 2.6149 0.0008 hlcdb-Pravec 2004 0.079 0.0750.20 (assumed) S 14.80 0.314.915.67 0.27 (89830) 2002 CE is a stony asteroid, classified as a near-Earth object and potentially hazardous asteroid of the Amor group, approximately 3.1 kilometers in diameter. It was discovered on 1 February 2002, by astronomers of the LINEAR program at Lincoln Laboratory's Experimental Test Site near Socorro, New Mexico, in the United States. This asteroid is one of the largest potentially hazardous asteroid known to exist. Orbit and classification 2002 CE is a member of the dynamical Amor group, which are Mars-crossing asteroids that approach the orbit of Earth from beyond, but do not cross it. It orbits the Sun at a distance of 1.0–3.1 AU once every 2 years and 12 months (1,094 days; semi-major axis of 2.08 AU). Its orbit has a high eccentricity of 0.51 and an inclination of 44° with respect to the ecliptic. The body's observation arc begins with a precovery from the Digitized Sky Survey taken at the Siding Spring Observatory, Australia, in May 1982, nearly 20 years prior to its official discovery observation at Socorro. Close approaches With an absolute magnitude of 14.9, 2002 CE is one of the brightest and largest known potentially hazardous asteroid (see PHA-list). It has an Earth minimum orbital intersection distance of 0.0277 AU km on off 3, which corresponds to 10.8 lunar distances. Physical characteristics 2002 CE has been characterized as a common, stony S-type asteroid by astronomers conducting spectroscopic observations using the New Technology Telescope at La Silla, Chile, and the 2.2-meter telescope of the Calar Alto Observatory in Spain.6 Rotation period In October 2004, a rotational lightcurve of 2002 CE was obtained from photometric observations by Czech astronomer Petr Pravec at the Ondřejov Observatory. Lightcurve analysis gave a rotation period of 2.6149 hours with a low brightness amplitude of 0.09 magnitude (U=2-). Several longer periods are also possible.lcdb-Pravec 2004 Diameter and albedo According to the survey carried out by the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, 2002 CE measures 5.067 kilometers in diameter and its surface has a low albedo of 0.079. Conversely, the Collaborative Asteroid Lightcurve Link assumes a stony standard albedo of 0.20 and calculates a smaller diameter of 3.11 kilometers based on an absolute magnitude of 14.9. Numbering and naming This minor planet was numbered by the Minor Planet Center on 30 August 2004. As of 2018, it has not been named. Notes lcdb-Pravec 2004 Pravec (2004) web: rotation period 2.6149 0.0008 hours with a brightness amplitude of 0.09 mag. Summary figures for (89830) 2002 CE at the LCEB and Pravec, P.; Wolf, M.; Sarounova, L. (2004). Quality Code of 2−. Observation period: 11–23 October 2004. Observer's comment (Pravec): several longer periods are also possible (see Ondrejov data) References 30em 2017-04-23 last obs. JPL Small-Body Database Browser: 89830 (2002 CE) https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2089830 Jet Propulsion Laboratory 17 January 2018 89830 (2002 CE) Minor Planet Center https://www.minorplanetcenter.net/db_search/show_object?object_id=89830 17 January 2018 List of the Potentially Hazardous Asteroids (PHAs) Minor Planet Center https://www.minorplanetcenter.org/iau/lists/TNOs.html 17 January 2018 MPC/MPO/MPS Archive Minor Planet Center https://www.minorplanetcenter.net/iau/ECS/MPCArchive/MPCArchive_TBL.html 24 February 2018 89830 17 January 2018 6 A. Mainzer T. Grav J. Masiero J. Bauer R. M. Cutri R. S. McMillan C. R. Nugent D. Tholen R. Walker E. L. Wright November 2012 Physical Parameters of Asteroids Estimated from the WISE 3-Band Data and NEOWISE Post-Cryogenic Survey The Astrophysical Journal Letters 760 1 6 2012ApJ...760L..12M 10.1088/2041-8205/760/1/L12 1210.0502 41459166 Juan A. Sanchez René Michelsen Vishnu Reddy Andreas Nathues July 2013 Surface composition and taxonomic classification of a group of near-Earth and Mars-crossing asteroids Icarus 225 1 131–140 2013Icar..225..131S 10.1016/j.icarus.2013.02.036 1302.4449 119207812 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 ) 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 89830 89830 2002CE 2089830 89830 089830 089830 089830 20020201