| 词条 | 2011 CQ1 | ||||||||||||||||||||||||||||||||||||||||||
| 释义 |
| minorplanet = yes | background = #FFC2E0 | name = {{mp|2011 CQ|1}} | discovery_ref = | discoverer = Catalina Sky Survey Richard A. Kowalski | discovered = February 4, 2011 | mpc_name = {{mp|2011 CQ|1}} | mp_category = Aten NEO[2] | orbit_ref = [2] | epoch = 13 January 2016 (JD 2457400.5) | aphelion = {{Convert|1.0087|AU|Gm|abbr=on|lk=on}} (Q) | perihelion = {{Convert|0.66454|AU|Gm|abbr=on}} (q) | semimajor = {{Convert|0.83661|AU|Gm|abbr=on}} (a) | eccentricity = 0.20567 (e) | period = 0.77 yr (279.5 d) | inclination = 5.2445° (i) | asc_node = 315.23° (Ω) | mean_anomaly = 18.607° (M) | arg_peri = 335.40° (ω) | dimensions = ~{{convert|1|m|in|sp=us}} | magnitude = 14.2 (2011 peak)[4] | abs_magnitude = 32.1[2] | mean_motion = 1.2880°/day (n) | uncertainty = 5 | moid = {{Convert|0.000166307|AU|km|abbr=on}} | jupiter_moid = {{Convert|4.09715|AU|Gm|abbr=on}} }}{{mp|2011 CQ|1}} is a meteoroid discovered on February 4, 2011 by Richard A. Kowalski, at the Catalina Sky Survey. On the same day the meteoroid passed within 0.85 Earth radii ({{convert|5480|km|sp=us}}) of Earth's surface, and was perturbed from the Apollo class to the Aten class of near-Earth objects.[7] With a relative velocity of only 9.7 km/s,[2] 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 {{convert|80|cm|in|sp=us}} and {{convert|2.6|m|in|sp=us}} wide.[7] The meteoroid was removed from the Sentry Risk Table on February 5, 2011.[10]
References1. ^1 2 3 4 {{cite web |type=last observation: 2011-02-04; arc: 1 day |title=JPL Close-Approach Data: (2011 CQ1) |url=http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2011CQ1;cad=1#cad|access-date=31 March 2016}} (K11C01Q)[1][2][3][4]2. ^1 2 {{cite web|title=Very Small Asteroid Makes Close Earth Approach on February 4, 2011 |url=http://neo.jpl.nasa.gov/news/news170.html |work=News |publisher=NASA/JPL Near-Earth Object Program Office |accessdate=18 September 2011 |author=Don Yeomans |author2=Paul Chodas |last-author-amp=yes |date=4 February 2011 |deadurl=yes |archiveurl=https://web.archive.org/web/20110902004227/http://neo.jpl.nasa.gov/news/news170.html |archivedate=2 September 2011 |df= }} 3. ^1 {{cite web |title=2011 CQ1 Ephemerides for 4 February 2011 |publisher=NEODyS (Near Earth Objects – Dynamic Site) |url=http://newton.dm.unipi.it/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 |accessdate=2013-02-28}} 4. ^1 {{cite web |title=Date/Time Removed |publisher=NASA/JPL Near-Earth Object Program Office |url=http://neo.jpl.nasa.gov/risk/removed.html |accessdate=2012-03-19}} }} External links
5 : Aten asteroids|Minor planet object articles (unnumbered)|Asteroids removed from the Sentry Risk Table|Near-Earth objects in 2011|Astronomical objects discovered in 2011 |
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