Re: Molniya 3-11 decay

Tony Beresford (
Tue, 15 Sep 1998 17:51:54 +0900

At 02:30 15/09/98 -0400, JAY RESPLER wrote:
>Do Molniya keep their special orbit by rocket firings during their 
>lifetime, or are natural forces enough to hold them ?
I dont know the answer to that question Jay. However it
is appropiate to point out that the lunar/solar pertubations that
effect the perigee height are conservative forces, and the dont affect
the orbital energy and hence the period or semi-major axis.
So thruster firings to maintain the 12 hour sidereal period
of the object is not required.
Tony Beresford