网站首页  英汉词典

请输入您要查询的英文单词:

 

单词 Navigational stars
释义

Navigational stars

英语百科

List of selected stars for navigation

The selected stars for navigation are often used for sextant observations
Selected navigation stars (except Polaris) listed on a U.S. Nautical Almanac page for May 1995
Equatorial stars with SHA from 180 to 360
Equatorial stars with SHA from 0 to 180

Fifty-eight selected navigational stars are given a special status in the field of celestial navigation. Of the approximately 6,000 stars visible to the naked eye under optimal conditions, the selected stars are among the brightest and span thirty-eight constellations of the celestial sphere from the declination of 70° south to 89° north. Many of the selected stars were named in antiquity by the ancient Arabs, Greeks, Romans, and Babylonians.

随便看

 

英汉网英语在线翻译词典收录了3779314条英语词汇在线翻译词条,基本涵盖了全部常用英语词汇的中英文双语翻译及用法,是英语学习的有利工具。

 

Copyright © 2004-2024 encnc.com All Rights Reserved
更新时间:2025/6/22 18:51:06