Annual Astronomical and Navigational Almanacs:
The Astronomical Almanac, The Nautical Almanac, The Air Almanac,
Astronomical Phenomena, and
The Astronomical Almanac Online
provide astronomical data, mainly in tabular form,
for use in navigation, surveying, scientific research, litigation,
accident reconstruction, and many other activities. Issued annually,
the almanacs contain data for one year. These publications are prepared jointly with
Her Majesty's Nautical Almanac Office
United Kingdom Hydrographic Office.
U.S. Naval Observatory Special Publications:
Publications of the U.S. Naval
Observatory, Astronomical Papers Prepared for the
Use of the American Ephemeris,
and U.S. Naval Observatory Circulars present technical data, mathematical
developments, or observations, and are issued at irregular intervals.
Preprints and reprints of selected articles written
by Astronomical Applications Department astronomers, and related
publications by other institutions.