I have a copy Douglas if you haven't already located one. 73 Don VE1AOE > Does anyone have a copy of (or know where I can > get a copy of) the article "Determination of Orbital > Elements Through Distance Measurements" by Stefan > Eckart? It was published in the April 1989 "Oscar > News" on pages 22-25. > > Douglas KA2UPW/5 >