请输入您要查询的字词:

 

单词 parallactic ellipse
释义
parallactic ellipse

Astronomy
  • The path on the sky of the apparent position of a star as seen from the Earth, due to the Earth’s annual motion around the Sun. The shape of the parallactic ellipse ranges from a circle for a star at the ecliptic pole to a line for a star on the ecliptic. Its size depends on the distance of the star, becoming smaller with increasing distance.


随便看

 

科学参考收录了60776条科技类词条,基本涵盖了常见科技类参考文献及英语词汇的翻译,是科学学习和研究的有利工具。

 

Copyright © 2000-2023 Sciref.net All Rights Reserved
京ICP备2021023879号 更新时间:2024/12/25 3:10:47