Просмотр кода страницы Английская Википедия:(60621) 2000 FE8

{{Английская Википедия/Панель перехода}}
{{DISPLAYTITLE:{{mp|(60621) 2000 FE|8}}}}
{{Use dmy dates|date=July 2021}}
{{Infobox planet
 | minorplanet     = yes
 | name            = {{mp|(60621) 2000 FE|8}}
 | background      = #C2E0FF
 | image           = Orbit of 2000 FE8.gif
 | image_size      = 265
 | image_alt       = Orbit of {{mp|(60621) 2000 FE|8}}
 | caption         = Orbit of {{mp|(60621) 2000 FE|8}}
 | discovery_ref   = <ref name="jpldata" /><ref name="MPC-object" />
 | discoverer      = [[John J. Kavelaars|J. Kavelaars]]<br />[[Brett J. Gladman|B. Gladman]]<br />[[Jean-Marc Petit|J.-M. Petit]]<br />[[Matthew J. Holman|M. Holman]]
 | discovery_site  = [[Mauna Kea Observatory|Mauna Kea Obs.]]
 | discovered      = 27 March 2000
 | mpc_name        = {{mp|(60621) 2000 FE|8}}
 | alt_names       = {{mp|2000 FE|8}}
 | named_after     = 
 | mp_category     = [[Trans-Neptunian object|TNO]]<ref name="jpldata" />{{·}}[[Resonant trans-Neptunian object|res]] [[Resonant trans-Neptunian object#2:5|2:5]]<ref name= "TNO List" />
 | orbit_ref       = <ref name="jpldata" />
 | epoch           = 4 September 2017 ([[Julian day|JD]] 2458000.5)
 | uncertainty     = 4
 | observation_arc = 6.80 yr (2,485 days)
 | aphelion        = 78.590 [[Astronomical unit|AU]]
 | perihelion      = 33.185 AU
 | semimajor       = 55.888 AU
 | eccentricity    = 0.4062
 | period          = 417.81 [[Julian year (astronomy)|yr]] (152,607 days)
 | mean_anomaly    = 30.201[[Degree (angle)|°]]
 | mean_motion     = {{Deg2DMS|0.0024|sup=ms}} / day
 | inclination     = 5.8614°
 | asc_node        = 3.8785°
 | arg_peri        = 144.17°
 | satellites      = 1, S/2007 (60621) 1<ref name= "Johnston archive" />
 | mean_diameter   = {{val|146|ul=km}} {{small|(primary)}}<ref name="Johnston archive" /><br />{{val|111|u=km}} {{small|(secondary)}}<ref name="Johnston archive" />
 | density         = {{val|1|ul=g/cm3}}<ref name="Johnston archive" />
 | albedo          = 0.09<ref name ="Johnston archive" />
 | spectral_type   = ([[Trans-Neptunian object#Colors|yellow-orange]]) {{nowrap|1=B−V=0.75}}; {{nowrap|1=V−R=0.48}}<ref name="Tegler" />
 | abs_magnitude   = 6.9<ref name="jpldata" />
}}

'''{{mp|(60621) 2000 FE|8}}''' is a resonant and binary [[trans-Neptunian object]], approximately {{convert|146|km|mi|abbr=off|sp=us|sigfig=2}} in diameter, located in the outermost region of the [[Solar System]]. It was discovered on 27 March 2000, by astronomers [[John J. Kavelaars|John Kavelaars]], [[Brett J. Gladman|Brett Gladman]], [[Jean-Marc Petit]] and [[Matthew J. Holman|Matthew Holman]] at [[Mauna Kea Observatory]] on Hawaii. This distant object resides in an eccentric orbit and is locked in a [[Resonant trans-Neptunian object|2:5 orbital resonance]] with [[Neptune]]. It is known to have a 111-kilometer sized [[Minor-planet moon|companion]], which was discovered in January 2007.<ref name="TNO List" />

== Orbit ==

{{mp|2000 FE|8}} has an extremely eccentric orbit which crosses the paths of many other [[trans-Neptunian objects]], including almost all of the [[dwarf planets]] and [[dwarf planet candidates]]. As a result, its position alternates between the [[Kuiper belt]] and the [[scattered disc]].<ref name="jpldata" />

=== Resonance with Neptune ===

{{mp|2000 FE|8}} is part of a group of trans-Neptunian objects that orbit in a 2:5 resonance with Neptune.<ref name="boulder-orbit"/> That means that for every five orbits that Neptune completes, {{mp|2000 FE|8}} makes only two.<ref name="TNO List" /> Several other objects are in the same orbital resonance, the largest of which is {{mpl|(84522) 2002 TC|302}}.

== Satellite ==

Like many objects of the Kuiper belt and scattered disc, {{mp|2000 FE|8}} has a satellite. Provisionally designated S/2007 (60621) 1, the satellite was discovered by the [[Hubble Space Telescope]] seven years after {{mp|2000 FE|8}} itself was found.<ref name="cbat" /> The moon orbits at 1180 kilometres away from {{mp|2000 FE|8}}, completing one orbit in approximately 7 days.<ref name= "Johnston archive" /> It is thought to be 115&nbsp;km<ref name= "Johnston archive" /> in diameter, just 75.7% the diameter of 2000 FE<sub>8</sub> itself.

== Numbering ==

This [[minor planet]] was [[Minor planet designation|numbered]] by the [[Minor Planet Center]] on 14 June 2003.<ref name="MPC-Circulars-Archive" /> {{As of|2021}}, it has not been [[List of named minor planets (alphabetical)|named]].<ref name="MPC-object" />

== References ==
{{reflist|30em|refs=

<ref name="jpldata">{{cite web
  |type       = 2007-01-15 last obs.
  |title      = JPL Small-Body Database Browser: 60621 (2000 FE8)
  |url        = https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2060621
  |publisher  = [[Jet Propulsion Laboratory]]
  |accessdate = 28 May 2017}}</ref>

<ref name="MPC-object">{{cite web
  |title      = 60621 (2000 FE8)
  |work       = Minor Planet Center
  |url        = https://www.minorplanetcenter.net/db_search/show_object?object_id=60621
  |accessdate = 24 February 2018}}</ref>

<ref name="MPC-Circulars-Archive">{{cite web
  |title      = MPC/MPO/MPS Archive
  |work       = Minor Planet Center
  |url        = https://www.minorplanetcenter.net/iau/ECS/MPCArchive/MPCArchive_TBL.html
  |accessdate = 24 February 2018}}</ref>

<ref name= "Johnston archive">{{cite web
  |last=Johnston |first=W. R.
  |date=26 November 2008
  |title=(60621) 200 FE8
  |url=http://www.johnstonsarchive.net/astro/astmoons/am-60621.html
  |work=Johnston's Archive
  |accessdate=2013-10-01}}</ref>

<ref name="Tegler">{{cite journal
 |last1           = Tegler
 |first1          = S. C.
 |last2           = Romanishin
 |first2          = W.
 |last3           = Consolmango
 |first3          = G. J.
 |display-authors = 1
 |date            = 2003
 |title           = Color patterns in the Kuiper belt: a possible primordial origin
 |journal         = [[Astrophysical Journal]]
 |volume = 599
 |issue = 1
 |pages = L49–L52
 |bibcode         = 2003ApJ...599L..49T
 |doi             = 10.1086/381076
 |s2cid = 119835895
 |url             = http://openknowledge.nau.edu/1841/1/Tegler_S_etal_2003_color_patterns_kuiper_belt.pdf
 |access-date     = 2018-11-04
 |archive-url     = https://web.archive.org/web/20170922222821/http://openknowledge.nau.edu/1841/1/Tegler_S_etal_2003_color_patterns_kuiper_belt.pdf
 |archive-date    = 2017-09-22
 |url-status        = dead}}</ref>

<ref name= "TNO List">{{cite web
  |last=Johnston |first=W. R.
  |date=5 July 2013
  |title=List of Known Trans-Neptunian Objects
  |url=http://www.johnstonsarchive.net/astro/tnoslist.html
  |work=Johnston's Archive
  |accessdate=2013-10-05}}</ref>

<ref name="boulder-orbit">
 [http://www.boulder.swri.edu/~buie/kbo/astrom/60621.html Orbit and Astrometry for 60621<!-- Bot generated title -->]</ref>

<ref name="cbat">{{cite web
  |last=Green |first=Daniel
  |date=3 March 2007
  |title=Circular No. 8816
  |url=http://www.cbat.eps.harvard.edu/iauc/08800/08816.pdf
  |work=Harvard
  |accessdate=2013-10-05}}</ref>

}} <!-- end of reflist -->

== External links ==
* [http://www.cfeps.net  Canada-France Ecliptic Plane Survey] (CFEPS)
* [https://www.minorplanetcenter.net/iau/lists/t_centaurs.html List Of Centaurs and Scattered-Disk Objects], ''Minor Planet Center''
* {{JPL small body|id=60621}}

{{Minor planets navigator | |number=60621 |PageName={{mp|(60621) 2000 FE|8}} |60622 Pritchet}}
{{Small Solar System bodies}}
{{Trans-Neptunian objects}}
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{{DEFAULTSORT:2000 FE8}}
[[Category:Trans-Neptunian objects in a 2:5 resonance|060621]]
[[Category:Discoveries by John J. Kavelaars]]
[[Category:Discoveries by Brett J. Gladman]]
[[Category:Discoveries by Jean-Marc Petit]]
[[Category:Discoveries by Matthew J. Holman]]
[[Category:Binary trans-Neptunian objects|060621]]
[[Category:Astronomical objects discovered in 2000|20000327]]
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