View source for 2002 MN

{{Short description|Near-Earth asteroid}}
{{Use dmy dates|date=February 2018}}
{{Infobox planet
| minorplanet = yes
| background = #FFC2E0
| name = 2002 MN
| mp_category = {{Hlist
 | [[Apollo asteroid|Apollo]]
 | [[near-Earth asteroid|NEO]]
 }}
| discovery_ref = <ref name="MPEC2002-M14"/><ref>[https://www.newscientist.com/article.ns?id=dn2444 Asteroid's near-miss with Earth - 21 June 2002 - New Scientist]</ref>
| discoverer = [[MIT Lincoln Laboratory]]
| discovered = 17 June 2002
| orbit_ref = <ref name=jpldata/>
| observation_arc = 22.04 yr
| epoch = 17 October 2024 ([[Julian day|JD]]&nbsp;2460600.5)
| semimajor = {{Convert|1.8162|AU|Gm|abbr=on}}
| perihelion = {{Convert|0.90867|AU|Gm|abbr=on}}
| aphelion = {{Convert|2.7238|AU|Gm|abbr=on|lk=on}}
| eccentricity = 0.49969
| period = 2.4477&nbsp;[[Julian year (astronomy)|yr]] (894.03&nbsp;[[Day|d]])
| inclination = 1.0472°
| asc_node = 85.287°
| mean_anomaly = 62.941°
| arg_peri = 131.622°
| dimensions = ~{{convert|73|m|sp=us}}<ref name=summary/><br />(assumed){{efn|name=assumed}}
| mass = {{Val|5.4e8|u=kg}}
| abs_magnitude = 23.6<ref name=jpldata/>
| mean_motion = 0.40267° / day
| uncertainty = 0
| moid = {{Convert|0.000488451|AU|km|abbr=on}}
| jupiter_moid = {{Convert|2.24448|AU|Gm|abbr=on}}
}}
'''2002 MN''' is the [[Minor planet provisional designation|provisional designation]] given to a 73-meter [[Apollo asteroid|Apollo]] [[near-Earth asteroid]] that on 14 June 2002 passed [[Earth]] at a distance of {{convert|0.0008|AU|km mi|abbr=on|lk=on}},<ref name=jpldata/> about one third the distance to the Moon (0.3&nbsp;[[Lunar distance (astronomy)|LD]]).<ref name=NASA/> The close approach was second only to the Earth approach by the 10-meter asteroid 1994 XM1.<ref name=NASA/> 2002 MN was discovered on 17 June 2002, three days after closest approach.<ref name="MPEC2002-M14"/> Its mass and relative velocity were in the same general range as the object ascribed to the [[Tunguska event]] of 1908, which leveled over {{convert|800|mi2|km2|order=flip|abbr=on}} of trees in [[Siberia]].

2002 MN was estimated to have a 1 in 360,000 chance of Earth impact sometime after 2070,<ref name="summary"/> but further observations in July 2024<ref name="mpec24"/> ruled this out, and the object was removed from the risk list.

{{Large near earth asteroid flybys 1LD}}

== Notes ==
{{notelist|refs=

{{efn|name=assumed|1=Diameter estimate based on an assumed [[Astronomical albedo|albedo]] of 0.15.}}

}} <!-- end of notelist -->

==References==
{{reflist
| refs =

<ref name=jpldata>{{cite web
 |title       = JPL Close-Approach Data: (2002 MN)
 |url         = http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2002MN;cad=1#cad
 |archive-url  = https://web.archive.org/web/20240801122933/https://ssd.jpl.nasa.gov/tools/sbdb_lookup.html#/?sstr=2002%20MN&view=OPC
 |archive-date = 1 August 2024
 |url-status=live
 |access-date = 3 August 2024
}}</ref>

<ref name="NASA">{{cite web
  |date=June 19, 2002
  |title=Asteroid 2002 MN: Second Closest Asteroid Approach to Earth
  |publisher=NASA's Near Earth Object Program Office
  |author=Don Yeomans
  |url=http://neo.jpl.nasa.gov/news/news130.html|archive-url=https://web.archive.org/web/20020805125835/http://neo.jpl.nasa.gov/news/news130.html|url-status=dead|archive-date=August 5, 2002}}</ref>

<ref name=summary>{{cite web
  |title=Earth Impact Risk Summary: 2002 MN
  |publisher=NASA/JPL Near-Earth Object Program Office
  |archive-url=https://web.archive.org/web/20180122042229/https://cneos.jpl.nasa.gov/sentry/details.html#?des=2002%20MN
  |archive-date=2018-01-22
  |url=https://cneos.jpl.nasa.gov/sentry/details.html#?des=2002%20MN}}</ref>

<ref name="MPEC2002-M14">{{Cite web
  |title=MPEC 2002-M14 : 2002 MN
  |publisher=[[IAU Minor Planet Center]]
  |date=2002-06-18
  |url=http://www.minorplanetcenter.net/mpec/K02/K02M14.html
  |access-date=2013-01-24}}</ref>

<ref name="mpec24">{{Cite web
  |title=MPEC 2024-N09 : 2002 MN
  |publisher=[[IAU Minor Planet Center]]
  |date=2024-07-02
  |url=https://www.minorplanetcenter.net/mpec/K24/K24N09.html
  |access-date=2024-08-03}}</ref>

}}

== External links ==
* {{NeoDys|2002+MN}}
* {{ESA-SSA|2002MN}}
* {{JPL small body|id=3127411}}

{{s-start}}
{{s-bef|before={{mpl|2002 JE|9}}}}
{{s-ttl|title=Large [[Near-Earth object|NEO]] Earth close approach<br />([[List of record-setting asteroid close approaches to Earth#Asteroids|inside the orbit of the Moon]])|years=14 June 2002}}
{{s-aft|after={{mpl|(308635) 2005 YU|55}}}}
{{end}}

{{Planetary defense}}
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{{Small Solar System bodies}}
{{Authority control}}

{{DEFAULTSORT:2002 MN}}
[[Category:Apollo asteroids|#]]
[[Category:Minor planet object articles (unnumbered)]]
[[Category:Near-Earth objects removed from the Sentry Risk Table]]
[[Category:Near-Earth objects in 2002|20020614]]
[[Category:Astronomical objects discovered in 2002|20020617]]


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