This mod provides a combinator that will listen for signals that are sent to it.

When it receives a planet virtual signal it will either pick the planet if its in the schedule or add a temporary planet schedule to the space platform

The combinator can not be manually updated, but it will output 2x signals
1) a compass icon showing the distance from last planet
2) a planet combo icon showing the distance along the leg its traveling .. eg 5k betwen Nauvis and Vulcanus.