Well, i suggest that you can use some satellite motion examples in ntnu as a reference, applets created by prof Hwang, lookang, i believe this can help you
To watch what you miss variables page, here some examples URLs

[url=http://www.phy.ntnu.edu.tw/ntnujava/index.php?topic=517.0]http://www.phy.ntnu.edu.tw/ntnujava/index.php?topic=517.0[/url]

[url=http://www.phy.ntnu.edu.tw/ntnujava/index.php?topic=1877.0]http://www.phy.ntnu.edu.tw/ntnujava/index.php?topic=1877.0[/url]

[url=http://www.phy.ntnu.edu.tw/ntnujava/index.php?topic=1723.0]http://www.phy.ntnu.edu.tw/ntnujava/index.php?topic=1723.0[/url]

You can download the jar file and unzip, open xml source code using Ejs and look to variables to find what your project missed and what you need to add.