
A worldwide resource for fundamental astronomical data, the Astronomical Almanac
Includes:: contributions from astronomical experts, as well as a wide variety of technical & general astronomical information. This
Includes:: Positions of the Sun, Moon & planets to milli-arcsecond precision. Positions of minor planets & planetary satellites for each year. Data relating to Earth orientation, time-scales & coordinate systems. Sunrise/set, moonrise/set & twilight times. Reference data for stars & stellar systems, observatories & related astronomical constants & techniques. This is a joint publication with the United States Naval Observatory.