I found the properties scenePosition and sceneTransform. This seems to the thing I am looking for, except I can't get it working.
trace("position: " + model.getChildByName("object-
node").scenePosition); // output: x:0 y:0 z:0
trace("position: " + (model.getChildByName("object-node") as
Mesh).vertices[0].position); // output: x:11 y:100 z:56
