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词汇 Navigational stars
分类 英语词汇 英语翻译词典
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.

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