| 词条 | 2014 OO6 |
| 释义 |
| minorplanet = yes | background = #FFC2E0 | name = {{mp|2014 OO|6}} | discovery_ref = [1] | discoverer = Pan-STARRS (F51) | discovered = 27 July 2014 | mpc_name = {{mp|2014 OO|6}} | mp_category = Apollo, NEO | orbit_ref = | epoch = 13 January 2016 (JD 2457400.5) | aphelion = {{Convert|3.6991|AU|Gm|abbr=on|lk=on}} (Q) | perihelion = {{Convert|0.70742|AU|Gm|abbr=on}} (q) | semimajor = {{Convert|2.2032|AU|Gm|abbr=on}} (a) | eccentricity = 0.67892 (e) | period = 3.27 yr (1194.5 d) | inclination = 1.3817° (i) | asc_node = 111.17° (Ω) | mean_anomaly = 140.83° (M) | arg_peri = 287.34° (ω) | dimensions = ~75 meters[4] 60–140 meters[5] | abs_magnitude = 23.1 | mean_motion = {{Deg2DMS|0.30138|sup=ms}} / day (n) | uncertainty = 4 | observation_arc = 154 days | moid = {{Convert|0.000161353|AU|km|abbr=on}} }}{{mp|2014 OO|6}} (also written 2014 OO6) is an Apollo near-Earth asteroid discovered in 2014 and was the most dangerous one discovered in 2014 that remained on the Sentry Risk Table as of early December 2014.[4] The asteroid is estimated to be roughly {{convert|75|m|ft|sp=us}} in diameter and had a 1 in 83,000 chance of impacting Earth on 11 January 2051.[4] However, the nominal best-fit orbit shows that {{mp|2014 OO|6}} will be {{convert|1.5|AU|km mi|abbr=on|lk=on}} from Earth on 11 January 2051.[9] It was discovered on 27 July 2014 by Pan-STARRS at an apparent magnitude of 20 using a {{convert|1.8|m|in|adj=on|sp=us}} Ritchey–Chrétien telescope.[1] On 18 August 2014 the asteroid passed {{convert|0.02975|AU|km mi|abbr=on|lk=on}} from Earth.[11] By 23 August 2014, the asteroid had dimmed to below magnitude 25.[12] As of early December 2014, the asteroid had an observation arc of 24 days with an uncertainty parameter of 7. {{mp|2014 OO|6}} was recovered by Cerro Paranal Observatory on 23 and 26 December 2014 at magnitude 25 which extended the observation arc from 24 days to 154 days.[14] The orbital refinement removed the impact risk for 11 January 2051.[4] With an absolute magnitude of 23.1, the asteroid is about 60–140 meters in diameter.[5] See also
References1. ^1 2 {{cite web |title=MPEC 2014-O56 : 2014 OO6 |publisher=IAU Minor Planet Center |date=28 July 2014 |url=http://www.minorplanetcenter.org/mpec/K14/K14O56.html |accessdate=12 December 2014}} (K14O06O) [1][2][3][4][5][6][7]2. ^1 {{cite web |type=last observation: 18 August 2014; arc: 24 days |title=JPL Close-Approach Data: (2014 OO6) |url=http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2014OO6;cad=1#cad |accessdate=12 December 2014}} 3. ^1 2 {{cite web |title=Absolute Magnitude (H) |publisher=NASA/JPL |url=http://neo.jpl.nasa.gov/glossary/h.html |accessdate=12 December 2014}} 4. ^1 2 3 4 {{cite web |date=13 December 2014 |title=Earth Impact Risk Summary: 2014 OO6 |publisher=Wayback Machine: NASA/JPL Near-Earth Object Program Office |url=https://cneos.jpl.nasa.gov/sentry/details.html#?des=2014%20OO6 |accessdate=12 December 2014 |deadurl=yes |archiveurl=https://web.archive.org/web/20141213031750/http://neo.jpl.nasa.gov/risk/2014oo6.html |archivedate=December 13, 2014 }} 5. ^1 {{cite web |title=2014OO6 Ephemerides for 11 July 2014 through 28 August 2014 |publisher=NEODyS (Near Earth Objects – Dynamic Site) |url=http://newton.spacedys.com/neodys/index.php?pc=1.1.3.1&n=2014OO6&oc=500&y0=2014&m0=7&d0=11&h0=0&mi0=0&y1=2014&m1=8&d1=28&h1=0&mi1=0&ti=1.0&tiu=days |accessdate=12 December 2014}} 6. ^1 {{cite web |title = 2014OO6 Ephemerides for 1 January 2051 through 18 January 2051 |publisher = NEODyS (Near Earth Objects – Dynamic Site) |url = http://newton.spacedys.com/neodys/index.php?pc=1.1.3.1&n=2014OO6&oc=500&y0=2051&m0=1&d0=1&h0=0&mi0=0&y1=2051&m1=1&d1=18&h1=0&mi1=0&ti=1.0&tiu=days |archiveurl = https://archive.today/20141212204100/http://newton.dm.unipi.it/neodys/index.php?pc=1.1.3.1&n=2014OO6&oc=500&y0=2051&m0=1&d0=1&h0=0&mi0=0&y1=2051&m1=1&d1=18&h1=0&mi1=0&ti=1.0&tiu=days |archivedate = 12 December 2014 |dead-url = no |accessdate = 12 December 2014 |df = dmy-all}} 7. ^1 {{cite web |title=2014 OO6 Orbit |publisher=IAU Minor Planet Center |url=http://www.minorplanetcenter.net/db_search/show_object?object_id=2014+OO6 |accessdate=2014-12-29}} }} External links
5 : Apollo asteroids|Minor planet object articles (unnumbered)|Asteroids removed from the Sentry Risk Table|Near-Earth objects in 2014|Astronomical objects discovered in 2014 |
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