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单词 periastron
释义

Definition of periastron in English:

periastron

noun ˌpɛrɪˈastrənˌpɛriˈæstrən
Astronomy
  • The point nearest to a star in the path of a body orbiting that star.

    Example sentencesExamples
    • Also, relativistic advance of periastron has been studied and confirmed in certain binary stars with elliptical orbits.

Origin

Mid 19th century: from peri- 'around' + Greek astron 'star', on the pattern of perigee and perihelion.

 
 

Definition of periastron in US English:

periastron

nounˌpɛriˈæstrənˌperēˈastrən
Astronomy
  • The point nearest to a star in the path of a body orbiting that star.

    Example sentencesExamples
    • Also, relativistic advance of periastron has been studied and confirmed in certain binary stars with elliptical orbits.

Origin

Mid 19th century: from peri- ‘around’ + Greek astron ‘star’, on the pattern of perigee and perihelion.

 
 
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更新时间:2025/3/14 3:04:23