(388188) 2006 DP14

Sub-kilometer sized peanut-shaped asteroid January 2018 yes (388188) 2006 DP 14 #FFC2E0 Asteroid2006DP14.jpg Radar image of 2006 DP 14 by the Arecibo Observatory in 2014 23 February 2006 LINEAR Lincoln Lab's ETS (388188) 2006 DP 14 ApolloNEOPHA 23 March 2018 (JD 2458200.5) 0 10.10 yr (3,690 d) 2.4262 AU 0.3056 AU 1.3659 AU 0.7763 1.60 yr (583 d) 234.28° 0.6174 ms / day 11.778° 317.20° 59.280° 0.0163 AU (6.35 LD) 400 x 200 m 0.4 km0.493 km (calculated) 5.77 0.01 hlightcurve-plot-Warner5.78 0.02 h6 h 0.20 (assumed) S (assumed)B–V 0.670 0.022V–R 0.400 0.015V–I 0.792 0.031 18.80 0.0218.9 (388188) 2006 DP 14 is a sub-kilometer sized, peanut-shaped asteroid on a highly eccentric orbit, classified as a near-Earth object and potentially hazardous asteroid of the Apollo group. This contact binary was discovered on 23 February 2006, by astronomers of the LINEAR program at the Lincoln Laboratory's Experimental Test Site near Socorro, New Mexico, in the United States. On 10 February 2014, it passed 6.25 lunar distances from Earth. The asteroid is approximately 400 meters in diameter and has a rotation period of 5.77 hours.lightcurve-plot-Warner Classification and orbit 2006 DP 14 is a member of the Apollo group, which are Earth-crossing asteroids and the largest group of near-Earth asteroids. It orbits the Sun at a distance of 0.3–2.4 AU once every 19 months (583 days; semi-major axis of 1.37 AU). Its orbit has a high eccentricity of 0.78 and an inclination of 12° with respect to the ecliptic. As no precoveries were taken, the body's observation arc begins with its discovery observation in 2006. Close approaches The asteroid has an Earth minimum orbit intersection distance (MOID) of 0.0163 AU km on off 3 flip, which corresponds to 6.4 lunar distances (LD). On 10 February 2014, it passed Earth close to this theoretical minimum distance at 6.25 LD, or 0.016032 AU km on off 3 flip. This makes it a potentially hazardous asteroid (PHA), a body with a threatening close approach to the Earth, due to its low MOID and large size (absolute magnitude of 18.9). PHAs are defined as objects with an absolute magnitude of 22 or brighter – which generically corresponds to a diameter of approximately 140 meters – and a MOID that is smaller than 0.05 AU or 19.5 LD. Physical characteristics 2006 DP 14 is an assumed stony S-type asteroid. This asteroid is a typical contact binary, with two distinctive lobes on either end that appear to be in contact, giving it a peanut-like shape. Diameter, shape and albedo On the night of 11 February 2014, NASA scientists conducted a radar imaging session using the 70-meter dish at Goldstone Observatory. These observations, using delay-Doppler radar imaging, revealed a 400×200 meters sized body, while the Collaborative Asteroid Lightcurve Link calculates a diameter of almost 500 meters, based on an assumed standard albedo for stony asteroids of 0.20 and an absolute magnitude of 18.9. Amateur and professional astronomers helped track 2006 DP 14 in the preceding days, so they would know just where to point the large antenna. Rotation period Goldstone's radiometric observations also gave a rotation period of approximately 6 hours. Photometric follow-up observations led to two light-curves that gave a refined period of 5.77 and 5.78 hours with a high brightness variation of 1.05 and 0.9, respectively (U=3/3).lightcurve-plot-Warner Its high brightness amplitude is also indicative for its elongated shape. Naming As of 2025, this minor planet remains unnamed. Notes lightcurve-plot-Warner Lightcurve plot of (388188), obtained at the Center for Solar System Studies (U82) by B. D. Warner in February 2014 References 30em 2016-04-01 last obs. JPL Small-Body Database Browser: 388188 (2006 DP14) https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2388188 Jet Propulsion Laboratory 1 June 2018 388188 (2006 DP14) Minor Planet Center https://www.minorplanetcenter.net/db_search/show_object?object_id=388188 9 September 2016 Radar Images of near-Earth Asteroid 2006 DP14 https://www.jpl.nasa.gov/news/news.php?release=2014-060 Jet Propulsion Laboratory 25 February 2014 9 September 2016 388188 9 September 2016 Warner, Brian D. July 2014 Near-Earth Asteroid Lightcurve Analysis at CS3-Palmer Divide Station: 2014 January–March The Minor Planet Bulletin 41 3 157–168 32549046 7296834 1052-8091 2014MPBu...41..157W M. Hicks S. Ebelhar February 2014 Broad-band Photometry of the Potentially Hazardous Asteroid 2006 DP14 The Astronomer's Telegram 5928 1 2014ATel.5928....1H External links Asteroid Lightcurve Database (LCDB), query form (info https://web.archive.org/web/20171216050541/http://www.minorplanet.info/lightcurvedatabase.html 16 December 2017 ) 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 388188 388188 2006DP14 388188 (388188) 2006 DP 14 388188 388188 388188 388188 388188 20140210 20060223