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To help compare different distances this page lists lengths starting at 1015 m (1 Pm or 1,000,000 million km or 6685 astronomical units (AU) or 0.11 light years). Distances shorter than 1 Pm * 1.0 Pm = 0.105702341 light years * 1.9 Pm ± .5 Pm = 12,000 AU = 0.2 light year radius of Cat's Eye Nebula's inner core〔radius = distance times sin(angular diameter/2) = 0.2 light year. Distance = 3.3 ± 0.9 kly; angular diameter = 20 arcseconds〕 * 4.7 Pm = 30,000 AU = half light year diameter of Bok globule Barnard 68 * 7.5 Pm — 50,000 AU — Possible outer boundary of Oort cloud (other estimates are 75,000 to 125,000 or even 189,000 AU (1.6, 2, and 3 light years, respectively)) * 7.7 Pm — 52,000 AU — Aphelion distance of the Great Daylight Comet of 1910 * 9.5 Pm — 63,241.1 AU — One light year, the distance travelled by light in one year Distances longer than 10 Pm ==Notes== 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「1 petametre」の詳細全文を読む スポンサード リンク
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