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The Nautical Almanac has been the familiar name for a series of official British almanacs published under various titles since the first issue of The Nautical Almanac and Astronomical Ephemeris, for 1767: [1] this was the first nautical almanac to contain data dedicated to the convenient determination of longitude at sea.
The American Ephemeris and Nautical Almanac was published for the years 1855 to 1980, containing information necessary for astronomers, surveyors, and navigators. It was based on the original British publication, The Nautical Almanac and Astronomical Ephemeris, with which it merged to form The Astronomical Almanac, published from the year 1981 to the present.
[1] [2] In the United States, a nautical almanac has been published annually by the US Naval Observatory since 1852. [2] It was originally titled American Ephemeris and Nautical Almanac. Since 1958, the USNO and HMNAO have jointly published a unified nautical almanac, The Astronomical Almanac for use by the navies of both countries. [2]
Newcomb's Tables of the Sun (full title Tables of the Motion of the Earth on its Axis and Around the Sun) [a] is a work by the American astronomer and mathematician Simon Newcomb, published in volume VI of the serial publication Astronomical Papers Prepared for the Use of the American Ephemeris and Nautical Almanac. [1]
[1] [2] His textbook "Navigation and Nautical Almanac" was used for over thirty years in instruction at the Naval Academy. [1] Coffin served as the superintendent of the American Ephemeris and Nautical Almanac starting on May 1, 1866. In 1867, he moved from Cambridge, Massachusetts, to Washington, D.C., when the almanac moved its place of ...
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Software is widely available to assist with this form of navigation; some of this software has a self-contained ephemeris. [9] When software is used that does not contain an ephemeris, or if no software is used, position data for celestial objects may be obtained from the modern Nautical Almanac or Air Almanac. [10]
From 1849 to 1855 he was the first superintendent of American Nautical Almanac Office and produced the American Ephemeris and Nautical Almanac. [13] In 1854, he was promoted to commander and given the command of the St. Mary's.