I'm trying to find which Asteroid are on a collision course for Kerbin and I can't seem to get the info from the orbit Class. Vessel.orbit.closestEncounterLevel always seems to be None for not active vessel; Similar results for (all return false, none, null, etc...) : orbit.closestEncounterBody orbit.closestEncounterPatch orbit.nextPatch The only information I need is the altitude at periapsis around Kerbin, if there is one. (Then set to Asteroid to be auto-tracked, Which I know how to do