Re: Radar to Track Space Junque

Joe Dellinger (
Fri, 27 Mar 1998 10:59:50 -0600

	True, a ground site at high latitudes sees fewer individual satellites
--- it's impossible to place an object in an orbit that doesn't take it over
the equator, but many objects are in orbits that don't take them over the
arctic! This site in Norway isn't going to see the Hubble, for example!

	However, objects that are in high-inclination low-Earth orbits will
pass within range of a given ground site in the arctic far more often than
they would one at a lower latitude. In the limiting case, a satellite in a
perfect polar orbit goes over the North pole once per orbit. I suspect
Northern Norway will turn out to be the ideal latitude for keeping track
of satellites in sun-synchronous orbits. (And Molniya orbits?)