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Iota1 Librae : ウィキペディア英語版 | Iota1 Librae
Iota1 Librae (ι1 Lib) is a star in the constellation Libra. Its apparent magnitude is 4.54. It is located 379 light years from earth.〔(Extended Hipparcos Compilation (XHIP) (+ Anderson, 2012) )〕 == Visibility == Due to its southern location, although the star can be seen from most regions of the earth, observers in the southern hemisphere are more advantaged. Near Antarctica, it appears circumpolar, while it always remains invisible only in the vicinity of the Arctic Circle. Its magnitude of 4.5 means that naked-eye visibility is dependent on a sky sufficiently free from the effects of light pollution. The best time for observation in the evening sky falls in the months between May and September; from both hemispheres of the period of visibility remains approximately the same, thanks to the position of the star not far from the celestial equator.
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「Iota1 Librae」の詳細全文を読む
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