Larissa
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Neptune's seventh moon. It was discovered in 1981, but was rediscovered as a separate planet in 1989 from photos taken by Voyager 2. Its name comes from the wife of Poseidon, the sea god in Greek mythology. It orbits the planet Neptune in the fifth innermost orbit, and like the Naiads, it is thought to eventually fall into Neptune. It is non-spherical and has an average diameter of about 190 km. Source: About Shogakukan Digital Daijisen Information | Legend |
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海王星の第7衛星。1981年に発見されたが、1989年にボイジャー2号の撮影した写真から別の星として再発見された。名の由来はギリシャ神話の海神ポセイドンの妻。海王星系で5番目に内側の軌道を公転しており、ナイアッドなどと同じく、いずれは海王星に落下すると思われる。非球形で平均直径は約190キロ。
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