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JUPITER.DOC
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1986-08-31
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ááááThis program will compute the position of Io, Europa, Ganymede, and ì
ááááCallisto for any date or time after 1983. Enter the appropriate data ì
ááááwhen prompted by the program. Entries have the following restrictions.
áááá All Entries must be Upper Case!!!!
áááá áááá Year - Enter the full year. Example 1986
áááá áááá Month - Enter 1 through 12.
áááá áááá Day - Enter 1 through 31.
áááá áááá Time Zone - Enter -12 to +12.
áááá áááá Hour - Enter the Viewing Time in Decimal Hours.
ááááIf you load your graphics screen printer driver, prior to running the ì
ááááprogram you can obtain a hardcopy printout of the graphics screen by ì
áááápressing the SHIFT KEY and the PRINT KEY simultaneously.
ááááThe program is fairly accurate. However, when two of the moons are ì
ááááplotted on top of one another, or very close to one another, it is a ì
áááágood idea to check the calculated figures beneath the graphics window. ì
ááááUsing these figures the graphics display can be verified. South is ì
ááááalways at the top of the graphics display, and a negative number is ì
ááááalways to the left of Jupiter. By stepping an hour at a time and ì
ááááprinting each display a good picture of satellite motion can be ì
ááááobtained.