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    海王星衝 2021
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海王星衝 2021

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  • 14 Sep, 2021 Tue (1day)

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天文年曆

海王星是距離太陽最遠的外行星,而海王星衝約每367天出現一次。 當海王星衝出現時,海王星、地球及太陽三者會連成一直線,而地球則處於海王星與太陽之間,亦是海王星與地球最接近,顯得最為明亮的時候,也是一年中最佳的海王星觀測時機。 相比起其他行星,由於海王星較暗,需要用較高效能的望遠鏡才能看見。 事件時間長度只供參考
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香港天空

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