2011 CQ1

Apollo asteroid February 2018 yes #FFC2E0 2011 CQ 1 Catalina Sky SurveyRichard A. Kowalski 4 February 2011 2011 CQ 1 Aten NEO 13 January 2016 (JD 2457400.5) 5 12.4 hours(35 observations used) 1.0087 AU Gm on on (Q) 0.66454 AU Gm on (q) 0.83661 AU Gm on (a) 0.20567 (e) 0.77 yr (279.5 d) 5.2445° (i) 315.23° (Ω) 18.607° (M) 335.40° (ω) ~2 m in us 14.2 (2011 peak) 32.1 1.2880°/day (n) 0.000166307 AU km on 4.09715 AU Gm on 2011 CQ 1 is a meteoroid discovered on 4 February 2011 by Richard A. Kowalski, at the Catalina Sky Survey. On the same day the meteoroid passed within 0.85 Earth radii (5480 km us of Earth's surface, and was perturbed from the Apollo class to the Aten class of near-Earth objects. With a relative velocity of only 9.7 km/s, had the asteroid passed less than 0.5 Earth radii from Earth's surface, it would have fallen as a brilliant fireball. The meteoroid is between 80 cm in us and 2.6 m in us wide. The meteoroid was removed from the Sentry Risk Table on 5 February 2011. ParameterEpoch aphelion(Q) perihelion(q) Semi-majoraxis(a) eccentricity(e) Period(p) inclination(i) Longitudeascendingnode(Ω) Meananomaly(M) Argumentofperihelion(ω) UnitsAU (days) (°)Pre-flyby 2011-Jan-26 1.347 0.9096 1.128 0.1940 437.9 1.073° 135.4° 310.9° 58.59° Post-flyby 2011-Feb-08 1.009 0.6624 0.8360 0.2076 279.2 5.296° 315.4° 220.6° 335.1° It was not until 2020 QG on 16 August 2020 that a non-impacting closer approach to Earth was observed. left horizontal Animation of 2011 CQ 1's orbit - 2011 flyby Animation of 2011 CQ1 around Sun.gif Around the Sun Animation of 2011 CQ1 around Earth.gif Around the Earth Yellow Sun magenta 2011 CQ 1 Royalblue Earth See also References 2011-02-04 MPEC 2011-C12 : 2011 CQ1 IAU Minor Planet Center http://www.minorplanetcenter.net/mpec/K11/K11C12.html 2013-02-27 (K11C01Q) last observation: 2011-02-04; arc: 1 day JPL Close-Approach Data: (2011 CQ1) https://ssd.jpl.nasa.gov/tools/sbdb_lookup.html#/?sstr=2011CQ1&view=OPC https://web.archive.org/web/20210628080527/http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2011CQ1&cad=1 2021-06-28 live 31 March 2016 2011 CQ1 Minor Planet Center http://www.minorplanetcenter.net/db_search/show_object?object_id=2011+CQ1 2020-08-21 Very Small Asteroid Makes Close Earth Approach on 4 February 2011 http://neo.jpl.nasa.gov/news/news170.html News NASA/JPL Near-Earth Object Program Office 18 September 2011 Don Yeomans Paul Chodas amp 4 February 2011 dead https://web.archive.org/web/20110902004227/http://neo.jpl.nasa.gov/news/news170.html 2 September 2011 2011 CQ1 Ephemerides for 4 February 2011 NEODyS (Near Earth Objects Dynamic Site) https://newton.spacedys.com/neodys/index.php?pc=1.1.3.1&n=2011CQ1&oc=500&y0=2011&m0=2&d0=4&h0=0&mi0=0&y1=2011&m1=2&d1=5&h1=0&mi1=0&ti=15&tiu=minutes 2013-02-28 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 2012-03-19 External links Tiny Asteroid Zips Close By Earth space.com 6 February 2011 Asteroid makes sharpest turn yet seen in solar system New Scientist 9 February 2011 Asteroid's Record-Breaking Brush with Earth Changed It Forever Space.com 23 February 2011 2011CQ1 2011CQ1 # Category:Minor planet object articles (unnumbered) # 20110204 20110204