ephemeris
ephemeris — 名詞
1. A chart or list, usually updated every year, that gives the predicted positions
星曆表
預測天體位置的圖表
A chart or list, usually updated every year, that gives the predicted positions of planets, stars, and other objects in the sky at specific times. Astronomers, sailors, and space agencies use it to plan observations, navigation, and missions.
Padma checked the ephemeris at the university library to plan her stargazing nights.
Padma 到大學圖書館查閱星曆表，以便規劃她的觀星行程。
ephemeris + purpose clause (to plan)
The annual ephemeris from the observatory lists sunrise and sunset times for each day of the year.
天文台出版的年度星曆表列出了每一天的日出與日落時間。
annual ephemeris — yearly publication
Kofi used an online ephemeris to find when Saturn would be visible from his garden.
Kofi 使用線上星曆表查詢土星何時會出現在他的花園上方。
Without the ship's nautical ephemeris, the captain could not navigate by the stars.
少了船上的航海星曆表，船長無法靠星星辨別方位。
Hassan learned to read the ephemeris in his astronomy class and soon found Mars on his own.
Hassan 在天文課上學會了閱讀星曆表，不久後便自行找到了火星。
- astronomical table
broader term; any table of astronomical data, not only positions
- celestial calendar
less technical; used by amateur astronomers for planning observations
- star chart
different format — a visual map of the sky, not a numeric table
文法句型
ephemeris + of + [celestial body]
annual/online/nautical ephemeris
用法筆記
The plural form is ephemerides /ˌɛfəˈmɛrədiːz/. Often used with descriptive adjectives (annual, nautical, online) or a possessive noun (the observatory's ephemeris, the ship's ephemeris). The word is primarily found in astronomy, navigation, and space-science contexts.