All formats should be considered fixed. Required formats and possible variations to those formats will be described. Defaults settings are selected by entering a blank string. The defaults will be given when available. The Satellite List arc.inp begins with a list of satellites for which orbits will be computed and written to the ephemeris.
Upper case is required.
Both PRN and Navstar numbers are recognized and the form used to enter these ID's will be used to write them to the output ephemeris. The first line in this section controls the orbit integration. This includes the speed of light, astronomical unit, constants of gravitation for the Earth, Moon and Sun, the Earth's and Sun's semi-major axes, and the Earth's gravity field model. In the following description, D is along the Sun-satellite line. X, Y and Z components are along the indicated satellite body-centered axes.