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is a Neptune trojan discovered on June 7, 2008, by Scott S. Sheppard and Chad Trujillo using the Subaru telescope.〔 〕 It was the seventh such object to be discovered, as well as the first to be found in the region of the trailing Lagrangian point about 60 degrees behind Neptune.〔〔 Like all Neptune trojans, has the same orbital period as Neptune;〔 (【引用サイトリンク】publisher=Minor Planet Center )〕 i.e. it and Neptune are in a 1:1 orbital resonance. has an inclination of 27.5 degrees.〔 (【引用サイトリンク】url=http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2008LC18 )〕 As of August 2010, this is the second highest inclination of any known Neptune trojan.〔〔 With an absolute magnitude of 8.4,〔〔 it has a diameter estimated at ~100 km.〔 The search for trojans of Neptune has been impeded by the fact that this region of space is currently along the line of sight to the center of the Milky Way, an area of the sky crowded with stars. was found in a location where background stars are obscured by a dust cloud.〔〔 〕 The discovery of one Neptune trojan in a searched area of 19 square degrees suggests that there may be 150 Neptune trojans with a diameter greater than ~80 km (24th magnitude), similar to the estimate of such objects in Neptune's swarm.〔 was not close enough for investigation by the ''New Horizons'' spacecraft when it crossed Neptune's region en route to Pluto in 2013–2014, but its discovery showed that other, more accessible Neptune trojans could potentially have been found before that time.〔 〕 crossed the ecliptic plane in 2011. ==References== 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「2008 LC18」の詳細全文を読む スポンサード リンク
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