Astronomical Almanac


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Astronomical Almanac

(ass-trŏ-nom -ă-kăl) The ephemeris prepared jointly since 1981 by the United States Naval Observatory, Washington DC, and the Royal Greenwich Observatory in the UK. It replaced both the UK Astronomical Ephemeris and the American Ephemeris and Nautical Almanac, published separately in the UK since 1767 and in the USA since 1855.
Collins Dictionary of Astronomy © Market House Books Ltd, 2006

astronomical almanac

[‚as·trə′näm·ə·kəl ′ȯl·mə‚nak]
(astronomy)
A publication giving the tables of coordinates of a number of celestial bodies at a number of specific times during a given period.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
Planning an observing session: The Astronomical Almanac Online lists ephemeris data for the calendar year.
Ring tilt angles are from the Astronomical Almanac (2013, 2014).
A key finding from the new database is that crater timings disagree with the way in which contact times for lunar eclipses are predicted in the annual Astronomical Almanac (jointly published by the nautical almanac offices at the U.S.
Explanatory supplement to the Astronomical Almanac, 3d ed.
This results in totality along the entire track, hence in the Astronomical Almanac this eclipse is classified as total.
Bosanquet sees the origin of the popular almanac in its common form as the combination of the traditional astronomical almanac, the prognostication, and the calendar; the earliest recorded example is from 1539 (Bosanquet Aa.II; STC 392.3).
The publishers of the Astronomical Almanac offer utility pages for calculating solar and lunar circumstances and for granting access to the atomic time of the USNO Master Clock.
Naval Observatory's Astronomical Almanac lists totality as lasting 12.3 minutes, while Fred Espenak's Fifty-Year Canon of Lunar Eclipses says 8.6 minutes.
The data contained in the SkyGuide were adapted from: the Astronomical Almanac for 2010 and other publications of the United States Naval Observatory, SkyMap Pro 8 (C A Marriott), Stellarium 0.8.1 (Fabien Chereau et al), JPL HORIZONS ephemeris generator, and OCCULT 3.0 (David Herald).
The data contained in the SkyGuide were adapted from: the Astronomical Almanac for 2009 and other publications of the United States Naval Observatory, SkyMap Pro 8 (C A Marriott), Stellarium 0.8.1 (Fabien Chereau et al), JPL HORIZONS ephemeris generator, and OCCULT 3.0 (David Herald).
The observatory remains home to an annual astronomical almanac.