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Astro*Dictionary by Michael Erlewine





2 articles for "Besselian"

Besselian Time [Astro*Index]

Besselian year number, and fraction thereof, corresponding to a given date (expressed in UT). v. Besselian Year.

See also:
♦ UT Universal Time
Besselian Year [Astro*Index]

A year which begins when the RAUMS is exactly 18:40:00, which occurs on or about January 1 in the Gregorian calendar. The length of the year varies slightly due to nutation in right ascension, but is nearly equal to one tropical year. It is employed by astrologers to assist in the calculation of Progressions.

See also:
♦ Bessel, Friedrich Wilhelm ♦ Raums ♦ Gregorian Calendar ♦ Nutation ♦ Right Ascension ♦ Tropical Year ♦ Progression


Astro*Index Copyright © 1997 Michael Erlewine