VSOP87 Functions used to Compute Planetary Positions (1.15 MB)
Version Compatibility: Visual Basic 5
The modules perform the bulk of the arduous mathematics saving the programer much tedious and error prone labor involved with transcribing data from books into a program.
To anyone familiar with books such as "Astronomical Algorithms" by Jean Meeus, these programs perform the familiar tasks of computing the heliocentric, ecliptical longitude L, latitude B and radius vector R (distance to the sun) for a planet at any given instant T.
These functions assume the user has a sufficient working knowledge of the advanced math required to apply them to their purpose.
Other essential info is included in the zipped archive of the function files in HTML format.
Instructions: Click the link below to download the code. Select 'Save' from the IE popup dialog. Once downloaded, open the .zip file from your local drive using WinZip or a comparable program to view the contents.