Add on that calculates (approximates) orbit changes due to drag.

[paul23]

Well I wonder if this could be done - a mod that approximates the orbital changes due to drag of satellites that are currently not in focus? It doesn't have to be full fledged physics, but something simple would be useful to have "passive return missions" that take 10-20 loops to lower before finally actually entering lower atmosphere.

[Guest]

KSP turns off physics when not on the vessel or on rails time warp, however this might be able to be done based on altitude. I'm not really up to this right now, but that's my input in case some one else would like to work on it.

[wasml]

Like this?: http://forum.kerbalspaceprogram.com/threads/129734