ApsideDetector minimum eccentricity

Orekit usage
1

In page
https://www.orekit.org/static/apidocs/org/orekit/propagation/events/AbstractDetector.html
it is written:

Beware that apside detection will fail for almost circular orbits. If for example an apside detector is used to trigger an ImpulseManeuver and the maneuver change the orbit shape to circular, then the detector may completely fail just after the maneuver has been performed!

What is the minimum orbit eccentricity for which this detector won’t fail?

Thank you,
Alfredo

2

Hi Alfredo,

I’m not sure the minimum eccentricity has been characterized. I’m guessing it is scenario dependent. Perhaps you could run some tests and post your results?

The failure will likely be detecting many more apsides then the user may want. For example I would expect the detector to find four apsides per rev for a circular orbit with J2 perturbations.

Regards,
Evan

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