>>I've been asked to add sorting capabilities on the radar cross section of >>satellites. This information is available at OIG in the "Satellite Situation >>Report". I need to import the radar cross sections of satellites into two >>line elements. Isn't this information, in a sense, already in line0? According to n2l_desc: Columns Info 17-20 Length, m (1) 22-25 Width, m (2) 27-30 Depth, m (1) If width and depth are zero, then the object is a sphere, and the length is its diameter. Objects with unknown dimensions have been assumed to be spherical, and a value of diameter has been "guesstimated". (2) If depth is zero, then the object is a cylinder, and width is its diameter. Just wondering, Ralph McConahy 34.8829N 117.0064W 670m