(179806) 2002 TD66

Near-Earth asteroid September 2020 yes #FFC2E0 (179806) 2002 TD 66 LINEAR Lincoln Lab ETS 5 October 2002 NEOApollo 13 January 2016 (JD 2457400.5) 2017 days (5.52 yr) 0 1.8580 AU Gm on 0.86543 AU Gm on 2.8505 AU Gm on on 0.53421 2.53 yr (925.03 d) 4.9211° 335.73° 125.66° 0.38918 ms / day 55.037° 0.00603808 AU km on 2.35661 AU Gm on 300 meters270–590 meters H 9.455 h d on on 20.2 (179806) 2002 TD 66 is a sub-kilometer asteroid, classified as a near-Earth object of the Apollo group. It was discovered on 5 October 2002, by the LINEAR project at Lincoln Laboratory's ETS in Socorro, New Mexico. It was announced on 7 October 2002 and appeared later that day on the JPL current risk page. Description Due to the proximity of its orbit to Earth and its estimated size, this object has been classified as a potentially hazardous asteroid (PHA) by the Minor Planet Center in Cambridge, Massachusetts. In November 2006 there were 823 PHAs known. 2011 10, there are 1261 PHAs known. 2002 TD 66 was removed from the Sentry Risk Table on October 10, 2002. A Doppler observation has helped produce a well known trajectory with a condition code (Uncertainty Parameter U) of 0. Based on an absolute magnitude (H) of 20.2, the asteroid is estimated to be between 270 and 590 meters in diameter. Radar astronomy shows it is a contact binary asteroid with a diameter of 300 meters and a rotation period of 9.5 hours. On February 26, 2008, 2002 TD 66 passed 0.04282 AU km mi on on from Earth. The asteroid also comes close to Venus, Mars, and dwarf planet Ceres. References 2008-04-13 last obs JPL Small-Body Database Browser: 179806 (2002 TD66) https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2002TD66 Jet Propulsion Laboratory 7 April 2016 2008-04-13 last obs JPL Close-Approach Data: 179806 (2002 TD66) https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2002TD66;cad=1#cad 2006-11-01 Date/Time Removed NASA/JPL Near-Earth Object Program Office http://neo.jpl.nasa.gov/risk/removed.html https://web.archive.org/web/20020602101400/http://neo.jpl.nasa.gov/risk/removed.html dead 2002-06-02 2011-10-24 Potentially Hazard Asteroids http://neo.jpl.nasa.gov/neo/groups.html https://web.archive.org/web/20020202160655/http://neo.jpl.nasa.gov/neo/groups.html dead 2002-02-02 2011-10-24 2013-11-18 Binary and Ternary near-Earth Asteroids detected by radar NASA/JPL Asteroid Radar Research Dr. Lance A. M. Benner http://echo.jpl.nasa.gov/~lance/binary.neas.html https://web.archive.org/web/20040608071121/http://echo.jpl.nasa.gov/~lance/binary.neas.html dead 2004-06-08 2014-03-01 External links Orbital path diagram of (0.04 AU from Earth on 25 February 2008) Lightcurve plot of (179806) 2002 TD66, Palmer Divide Observatory, B. D. Warner (2008) Asteroid Lightcurve Database (LCDB), query form (info https://web.archive.org/web/20171216050541/http://www.minorplanet.info/lightcurvedatabase.html 16 December 2017 ) Sormano Astronomical Observatory: Minor Body Priority List Minimum Orbital Intersection Distance Closest Approaches to the Earth by Minor Planets 179806 179806 2002TD66 179806 179806 (179806) 2002 TD 66 179806 179806 179806 179806 179806 20021005