Formula

The Navy publishes an Astronomical Almanac.

The publications listed below are prepared jointly by the Astronomical Applications Department, U.S. Naval Observatory, and Her Majesty's Nautical Almanac Office. These almanacs are published annually, with each edition containing the data for one year. In general, the content will be of interest only to those with specific training in astronomy or celestial navigation, although Astronomical Phenomena does contain information useful to calendar makers, such as the dates of phases of the Moon and religious holidays.

This is interesting, the Formula changed.

Astronomical Almanac 2001
Updates and Corrections

Page B6, The equation of the equinoxes and the paragraph following should read:

equation of equinoxes = 1/15(Dy cose + 0."002 64 sin W + 0."000 063 sin 2W)

and Dy is the total nutation in longitude, e is the mean obliquity of the ecliptic and W is the mean longitude of the ascending node of the Moon. The equation of the equinoxes is tabulated on pages B8-B15 at 0^hUT for each day and should be interpolated to the required time if full precision is required.

MAJOR PLANETS, Section E

Page E88, Heading for the last column under Coefficient of the Potential:

for 10⁸J₄ read 10⁶J₄

SATELITTES OF THE PLANETS, Section F

Page F2, the entry in the last column of the table for Neptune VIII Proteus:

for 0.5232 read 28.25

STARS AND STELLAR SYSTEMS, Section H

Page H61, the entry in the last column of the table for 1228+126 (3C 274)

for 17.90 read 71.90

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