Download USER'S GUIDE

run may not be very close to a numerical propagator result but statistical results based on several runs are.
This is due to resonance phenomena between earth gravity field and sun-moon perturbation. See Ref 6 and
Ref 8.
5.11.2. Control of validity domain
Before extrapolating, each parameter is controlled and compared to "authorized" and "recommended"
(warning limits) intervals. If value is out of the authorized interval, the extrapolation doesn't start, and a
message appears in the logbook to indicate the necessary correction.
General blocking limits
Params
Perigee altitude
(Type 0)
Apogee altitude
(Type 0)
Eccentricity
Mass
Reflecting Mean
area
Reflectivity
coefficient
Simulation
duration
Integration step
Date of the initial
orbit
Reference date of
the "Terrestrial
Frozen at Epoch"
Frame
Number of
integration steps
for each ephemeris
step
Constant solar
activity : Flux et
Ap
Drag Mean area
Interval
Explanation
] 0 ; + inf [
Physics coherence
[ Zp ; + inf [
Physics coherence
[0;1[
] 0 ; + inf [
Physics coherence
Physics coherence
] 0 ; + inf [
Physics coherence
[ 0 ; + inf [
Physics coherence,
Cr = 0 means that the
SRP is not taken into
account
[ 0 ; + inf [
Physics coherence
] 0 ; + inf [
All existing
dates
Physics coherence
Physics coherence
All existing
dates
Physics coherence
N*
Natural number not
null,
coherence with the
used integrator
[ 0 ; + inf [
Physics coherence
] 0 ; + inf [
Physics coherence
If null value,
Drag coefficient
[ 0 ; + inf [
simulation is executed
with no drag force
Number must be
Number of points
uneven,
of Simpson drag [ 3 ; + inf [ - 2P
this is required by the