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.

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.
References in periodicals archive ?
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.
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.
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.
Most values for the solar phase angle and all values of the ring tilt angle are from The Astronomical Almanac (9, 10).
The necessary Saturn-Earth and Saturn-Sun distances, ring tilt angles and solar phase angles were taken from the Astronomical Almanac (8, 9).
3, 2005 were taken from the Astronomical Almanac (8, 9) while those taken after that date were computed from the JPL Solar System Ephemerides, which is located on the ALPO website (10).
The B, V, R and I magnitudes for this star were taken from the Astronomical Almanac [7].
The two stars used in measuring the transformation coefficients were chi-Pegasus and gamma-Pegasus; both stars are listed as U, B, V, R and I standard stars in the Astronomical Almanac and the magnitudes used for these two stars were taken directly from the Astronomical Almanac [8].
018 magnitudes fainter than the predicted magnitudes in the Astronomical Almanac.
The V-filter measurements match up well with values predicted in the Astronomical Almanac.
Astronomical Almanac for the Year 1997, US Govt Printing Office, Washington DC, 1996.