The equation of time

Details The equation of time The equation of time

Jun 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989mnras.238.1529h&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 238, June 15, 1989, p. 1529-1535.

Astronomy and Astrophysics

Astronomy

Astronomy, Universal Time, Algorithms, Ephemeris Time, Equations, Sun

Scientific paper

A formula which gives the equation of time, the difference between solar time and mean time, as a function of UT is proposed. The formula is valid for any epoch within 30 centuries of the present day, and it provides results which are precise to about 3 s of time. Ignoring the distinction between the time-scales of ephemeris time and UT, expressions have also been derived for the equation of ephemeris time, the difference between the longitude of the mean sun and the right ascension of the apparent sun.

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