NGC 2403是一個位在鹿豹座的中間棒旋星系,距離地球8百萬光年 ,有一個H II型的星系核。.[3] NGC 2403是首先再1788年由威廉·赫歇爾發現,屬於M81星系團的成員之一,[2]現在可以輕鬆的用10 × 50 雙筒望遠鏡看到它[2]
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參考文獻
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