(481394) 2006 SF6

Near-Earth asteroid January 2020 yes (481394) 2006 SF 6 #FFC2E0 2006_SF6-orbit.png Orbital diagram of 2006 SF 6 CSS Catalina Stn. 17 September 2006 (481394) 2006 SF 6 NEOAtenPHA 27 April 2019 (JD 2458600.5) 01 13.17 yr (4,811 d) 1.2156 AU 0.6831 AU 0.9494 AU 0.2805 338 days 52.919° 1.0655 ms / day 5.8660° 228.06° 305.66° 0.0191 AU (7.4 LD) 0.3 km (est. at 0.21) 11.517 h 0.21 0.15 A/S  19.9 (481394) 2006 SF 6 is a sub-kilometer near-Earth object and potentially hazardous asteroid of the Aten group, approximately 300 m ft off 1 us in diameter. It was discovered on 17 September 2006, by the Catalina Sky Survey at Catalina Station in Arizona. On 21 November 2019, it passed Earth at a distance of 0.0288 AU LD out in 2 flip, which is the object's closest flyby for centuries. The stony A/S-type asteroid is highly elongated in shape and has a rotation period of 11.5 hours. Orbit and classification 2006 SF 6 orbits the Sun at a distance of 0.7–1.2 AU once every 11 months (338 days; semi-major axis of 0.95 AU). Its orbit has an eccentricity of 0.28 and an inclination of 6° with respect to the ecliptic. The body's observation arc begins with its official discovery observation at Catalina Station in September 2006. Close approaches Being a potentially hazardous asteroid, 2006 SF 6 has an Earth minimum orbital intersection distance (MOID) of 0.0191 AU km on 3 which corresponds to 7.4 lunar distances. In order to be classified as "potentially hazardous" an object must have an Earth-MOID of less than 0.05 AU km mi on on – approximately 19.5 lunar distances – and an absolute magnitude brighter than 22, approximately corresponding to a diameter above 140 m ft us. On 21 November 2019 at 00:01 UTC, it passed Earth at a nominal distance (measured from the center of the Earth) of 0.0288 AU LD out in 2 flip and at a relative velocity of 7.9 km/h. This is the object's closest flyby in JPL's data base, which covers 183 approaches over almost three centuries from April 1900 to November 2198. On 19 November 2069, it will pass 0.0393 AU km on 3 from Earth, which will be the asteroid's second closest approach after its record flyby on 21 November 2019. Numbering and naming This minor planet was numbered by the Minor Planet Center on 12 January 2017 (M.P.C. 102964). As of 2020 it has not been named. Physical characteristics During its apparition in November 2007, spectro-photometric data obtained of 2006 SF 6 allowed for an A/S/D-type classification. This classification could be further constrained to an A/S-type, as a D-type does not agree with the object's relatively high albedo value (see below).26 Rotation period In September 2018, a rotational lightcurve of 2006 SF 6 was obtained from photometric observations by Brian Warner and Robert Stephens at the Center for Solar System Studies in California. Lightcurve analysis gave a rotation period of 11.517 0.006 hours with a very high brightness amplitude of 0.97 0.04 magnitude (U=3), indicative of a highly elongated non-spherical shape. The two photometrists revisited the object in October 2019 and obtained a similar result of 11.495 0.002 hours with an even higher magnitude of 1.07 0.03 (U=3-). Diameter and albedo According to the NEOSurvey carried out by NASA's Spitzer Space Telescope, the asteroid's surface has an albedo of 0.21 0.15, which gives a mean-diameter of roughly 300 meters based on an absolute magnitude of 19.9. The Collaborative Asteroid Lightcurve Link assumes an albedo of 0.20 and a diameter of 0.311 kilometers using an absolute magnitude of 19.9 as well.www.minorplanet.info, Summary Query References 30em Aristos Georgiou 481394 (2006 SF6): Enormous 2,000-foot-wide Asteroid To Speed Past Earth At 18,000 Miles Per Hour In November 4 November 2019 Newsweek https://www.newsweek.com/481394-2006-sf6-enormous-2000-asteroid-earth-november-1469597 11 January 2020 2019-11-19 last obs. JPL Small-Body Database Browser: 481394 (2006 SF6) https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2481394;cad=1 Jet Propulsion Laboratory 10 January 2020 481394 (2006 SF6) Minor Planet Center https://www.minorplanetcenter.net/db_search/show_object?object_id=481394 10 January 2020 Sunao Hasegawa October 2018 Physical properties of near-Earth asteroids with a low delta-v: Survey of target candidates for the Hayabusa2 mission Publications of the Astronomical Society of Japan 70 6 13 1810.03706 10.1093/pasj/psy119 2018PASJ...70..114H Asteroid Size Estimator CNEOS NASA/JPL https://cneos.jpl.nasa.gov/tools/ast_size_est.html 10 January 2020 Lightcurve plot 481394 (2006 SF6) Brian D. Warner Center For Solar System Studies – CS3 http://www.planetarysciences.org/plots/BDW/481394_2006SF6_20180909.PNG 10 January 2020 Lightcurve plot 481394 (2006 SF6) Brian D. Warner Center For Solar System Studies – CS3 http://www.planetarysciences.org/plots/BDW/481394_2006SF6_20191026.PNG 10 January 2020 MPC/MPO/MPS Archive Minor Planet Center https://www.minorplanetcenter.net/iau/ECS/MPCArchive/MPCArchive_TBL.html 11 January 2020 External links An asteroid as large as 2,000 feet across will speed past Earth later this month, bgr.com, 6 November 2019 NEO Earth Close Approaches, CNEOS – Center for Near Earth Object Studies Near-Earth Asteroid Lightcurve Analysis at the Center for Solar System Studies: 2018 July-September, Brian D. Warner, Robert D. Stephens, The Minor Planet Bulletin, January 2019 481394 481394 2006SF6 2481394 481394 (481394) 2006 SF 6 481394 481394 481394 20060917