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Package: astronomical-almanac (5.6-3)

astronomical almanac - calculate planet and star positions

The aa program computes the orbital positions of planetary bodies and performs rigorous coordinate reductions to apparent geocentric and topocentric place (local altitude and azimuth). It also reduces star catalogue positions given in either the FK4 or FK5 system. Data for the 57 navigational stars is included. Most of the algorithms employed are from The Astronomical Almanac (AA) published by the U.S. Government Printing Office.

The aa program follows the rigorous algorithms for reduction of celestial coordinates exactly as laid out in current editions of the Astronomical Almanac. The reduction to apparent geocentric place has been checked by a special version of the program (aa200) that takes planetary positions directly from the Jet Propulsion Laboratory DE200 numerical integration of the solar system. The results agree exactly with the Astronomical Almanac tables from 1987 onward (earlier Almanacs used slightly different reduction methods).

Certain computations, such as the correction for nutation, are not given explicitly in the AA but are referenced there. In these cases the program performs the full computations that are used to construct the Almanac tables (references are provided).

Tags: Field: Astronomy, Role: Program

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Download for all available architectures
Architecture Package Size Installed Size Files
alpha 274.5 kB640 kB [list of files]
amd64 267.2 kB616 kB [list of files]
armel 275.6 kB588 kB [list of files]
avr32 (unofficial port) 267.8 kB580 kB [list of files]
hppa 267.0 kB552 kB [list of files]
hurd-i386 253.7 kB536 kB [list of files]
i386 252.5 kB532 kB [list of files]
ia64 301.5 kB784 kB [list of files]
kfreebsd-amd64 267.2 kB602 kB [list of files]
kfreebsd-i386 253.1 kB472 kB [list of files]
m68k (unofficial port) 250.2 kB548 kB [list of files]
mips 276.4 kB580 kB [list of files]
mipsel 276.2 kB580 kB [list of files]
powerpc 263.7 kB548 kB [list of files]
s390 259.8 kB540 kB [list of files]
sparc 260.5 kB548 kB [list of files]