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{{DISPLAYTITLE:2012 BX34}}
{{Infobox planet
| width = 25em
| bgcolour = #FFFFC0
| name = {{mp|2012 BX|34}}
| image =
| caption =
| discovery = yes
| discovery_ref = <ref name="MPEC2012-B62"/>
| discoverer = [[卡特林那巡天系统]]
| discovered = 2012年1月25日
| mp_category = [[阿登型小行星]] （[[近地天体|NEO]]）
| orbit_ref = <ref name=jpldata/>
| epoch = 2012年3月14日 (JD 2456000.5)
| aphelion = 1,03361558 [[天文单位|AU]] (Q)
| perihelion = 0,490204337 AU (q)
| semimajor = 0,761909958 AU (a)
| eccentricity = 0,356611196
| period = 242,9147585 天 (~2/3 [[儒略年|年]])
| avg_speed = 1.48200135°/天
| inclination = 10,53555566[[角度|°]]
| asc_node = 306.8049332°
| mean_anomaly = 295,3940307°(M)
| arg_peri = 335,6467343°
| physical_characteristics = yes
| dimensions = ~8米<ref name="itelescope"/><ref name="Benner"/>
| mass = ?
| density = ?
| surface_grav = ?
| escape_velocity = ?
| sidereal_day = ?
| albedo = 未知
| spectral_type = ?
| magnitude = ~13.9<ref name="NEODyS2012"/> - 30.3
| abs_magnitude = 27,63<ref name=jpldata/>
}}
'''2012 BX34'''是由[[卡特林那巡天系统]]在2012年1月25日首先发现的[[阿登型小行星]]。

2012年1月27日[[协调世界时]]15:25，它在距离地球表面65,390[[千米]]（40,630[[英里]]，0.0004371[[天文单位]]）的位置近距离擦过地球。<ref name=jpl-close/> 2012 BX34的直径约为8米，即使它撞击地球，也会因为直径太小而在地球大气中被燃烧掉。<ref name="AsteroidWatch"/> 在2012年的这次掠地事件中，它的[[视星等]]最亮时达13.9等<ref name="NEODyS2012"/>，和[[矮行星]][[冥王星]]的视星等相当。2012年2月25日，它的视星等降至30等。 <ref name="MPEC2012-B62"/>

==相关条目==
* [[值得关注的小行星列表#曾经非常接近地球的小行星]] 其他曾经非常接近地球的小行星

==参考资料==
{{reflist
| refs =

<ref name="MPEC2012-B62">{{cite web
|title=MPEC 2012-B62 : 2012 BX34
|publisher=IAU [[小行星中心]]
|date=26 January 2012
|url=http://www.minorplanetcenter.net/mpec/K12/K12B62.html
|accessdate=2012-01-29
|archive-date=2016-03-04
|archive-url=https://web.archive.org/web/20160304060916/http://www.minorplanetcenter.net/mpec/K12/K12B62.html
|dead-url=no
}}</ref>

<ref name=jpldata>{{cite web
|date=27 January 2012
|title=JPL Small-Body Database Browser: (2012 BX34)
|url=http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2012BX34
|publisher=Jet Propulsion Laboratory
|accessdate=2012-01-29
|archive-date=2019-08-22
|archive-url=https://web.archive.org/web/20190822101635/https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2012BX34
|dead-url=no
}}</ref>

<ref name=jpl-close>{{cite web
|date=27 January 2012
|title=JPL Close-Approach Data: (2012 BX34)
|url=http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2012BX34;cad=1#cad
|accessdate=2012-01-29
|archive-date=2019-08-22
|archive-url=https://web.archive.org/web/20190822101638/https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2012BX34;cad=1#cad
|dead-url=no
}}</ref>

<ref name="Benner">{{cite web
|date=26 January 2012
|title=2012 BX34 Goldstone Radar Observations Planning
|publisher=NASA/JPL Asteroid Radar Research
|author=Dr. Lance A. M. Benner
|url=http://echo.jpl.nasa.gov/asteroids/2012BX34/2012BX34_planning.html
|accessdate=2012-01-29
|archive-date=2020-11-23
|archive-url=https://web.archive.org/web/20201123192135/https://echo.jpl.nasa.gov/asteroids/2012BX34/2012BX34_planning.html
|dead-url=no
}}</ref>

<ref name="itelescope">{{cite web
|date=27 January 2012
|title=Images taken by legendary comet and asteroid hunter Rob McNaught tonight using T17 in Spain
|publisher=itelescope
|url=http://itelescope.squarespace.com/home/2012/1/27/neo-bx34-a-close-encounter.html
|accessdate=2012-01-29
|archive-url=https://web.archive.org/web/20120201070833/http://itelescope.squarespace.com/home/2012/1/27/neo-bx34-a-close-encounter.html
|archive-date=2012-02-01
|dead-url=yes
}}</ref>

<ref name="NEODyS2012">{{cite web
|title=NEODyS 2012BX34 Ephemerides for 27 Jan 2012
|publisher=AstDyS-2 (Asteroids - Dynamic Site)
|url=http://newton.dm.unipi.it/neodys/index.php?pc=1.1.3.1&n=2012BX34&oc=500&y0=2012&m0=1&d0=27&h0=0&mi0=0&y1=2012&m1=1&d1=28&h1=0&mi1=0&ti=1&tiu=hours
|accessdate=2012-01-29
|archive-date=2016-03-04
|archive-url=https://web.archive.org/web/20160304062218/http://newton.dm.unipi.it/neodys/index.php?pc=1.1.3.1&n=2012BX34&oc=500&y0=2012&m0=1&d0=27&h0=0&mi0=0&y1=2012&m1=1&d1=28&h1=0&mi1=0&ti=1&tiu=hours
|dead-url=no
}}</ref>

<ref name="AsteroidWatch">{{cite web
|date=26 January 2012
|title=It wouldn't get through our atmosphere intact even if it dared to try
|publisher=NASA/JPL Near-Earth Object Program Office
|author=AsteroidWatch
|url=https://twitter.com/#!/AsteroidWatch/status/162638876991692800
|accessdate=2012-01-29
|archive-date=2018-07-28
|archive-url=https://web.archive.org/web/20180728041220/https://twitter.com/#!/AsteroidWatch/status/162638876991692800
|dead-url=no
}}</ref>

}}

==外部链接==
* [http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2012BX34;orb=1 Orbital simulation]{{Wayback|url=http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2012BX34;orb=1 |date=20190822101633 }} from JPL (Java)/[http://ssd.jpl.nasa.gov/horizons.cgi?find_body=1&body_group=sb&sstr=2012BX34 Horizons Ephemeris]{{Wayback|url=http://ssd.jpl.nasa.gov/horizons.cgi?find_body=1&body_group=sb&sstr=2012BX34 |date=20191213155249 }}.
*[http://www.bbc.co.uk/news/science-environment-16756450 Asteroid makes near-miss fly-by]{{Wayback|url=http://www.bbc.co.uk/news/science-environment-16756450 |date=20200102105617 }}. BBC新闻报道, 2012年1月27日.
*[http://www.space.com/14382-bus-size-asteroid-2012bx34-buzzes-earth.html Bus-Size Asteroid Buzzes Earth in Close Flyby]{{Wayback|url=http://www.space.com/14382-bus-size-asteroid-2012bx34-buzzes-earth.html |date=20201112042429 }}. Space.com报道, 2012年1月27日.

[[Category:阿登型小行星]]
[[Category:2012年发现的小行星]]
[[Category:近地小行星]]

2012 BX34 - 版本历史

imported>InternetArchiveBot：​补救11个来源，并将0个来源标记为失效。) #IABot (v2.0.8

imported>InternetArchiveBot：补救11个来源，并将0个来源标记为失效。) #IABot (v2.0.8