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-
- Retrogrd.Prg
-
- This program presents a graphical representation of the retrograde
- motion of Jupiter for any year within 300 years of 1900. After the two
- text screens you'll be asked for The year you wish to observe. The
- date and position of opposition of the Jupiter will be calculated if
- it occurs in that year . This sets the middle of the subsequent plot.
- The date and position of opposition will be presented and the program
- will pause to allow you to read these values. When you hit the
- 'Return' key the screen will clear again and the plot begins. The
- limits of declination and right ascension will be labeled before the
- plot. At the middle of the plot a small set of vertical lines will
- mark the position of opposition. When the plot ends an alert box will
- appear and give three options : 1) Just to look at the plot (2) Make
- a hardcopy (screen dump) of the plot (3) Quit. If you select Quit
- you'll be asked if you wish to see another year before totally
- exitting.
-
-
- Also included in the Arc file is the source listing of all but the
- code produced by the 'GFA Companion' (since that is copyrighted by
- Michtron). The source code is commented upon as much as is possible.
-
- I wrote this program as part of a larger package that I am pointing
- toward. I'll be extending the program to include the retrograde
- motions of Mars and Saturn.
-
- Frank Jordan
- (1/18/88)
-
-