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sedna

/ˈsɛd.nə/

翻译: 专有名词,指一颗由岩石和冰组成的遥远矮行星,大小约为冥王星的四分之三,于2003年发现,是太阳系中已知最遥远的围绕太阳运行的天体之一。

1 个条目

noun

/ˈsɛd.nə/formalscientific
  • zh专有名词,指一颗由岩石和冰组成的遥远矮行星,大小约为冥王星的四分之三,于2003年发现,是太阳系中已知最遥远的围绕太阳运行的天体之一。

A proper noun referring to a distant planetoid composed of rock and ice, approximately three-quarters the size of Pluto, discovered in 2003 and known as the most distant object orbiting the sun.

不可数 · 专有名词

  1. Dwarf planet candidateC2formalscientific

    A large, distant trans-Neptunian object made of rock and ice, about three-quarters the size of Pluto, discovered in 2003; it is one of the most distant known objects orbiting the Sun.

    zh矮行星候选者

    • Sedna takes approximately 11,400 years to complete one orbit around the Sun.
    • The discovery of Sedna in 2003 expanded our understanding of the outer Solar System.
    • Astronomers study Sedna to learn more about the early formation of the solar system.