Under most circumstances, Keplerian elements should be updated every few weeks.  

Acquire a new set of Keplerian Elements by downloading one or more files from the internet.  We have a page with links to two good sources of elements.  

Download a new Keplerian element file and save it to any convenient location on your hard drive; you can use any filename.  

In the next step, we will show you how to read the new Keplerian element file with Nova for Windows.