You are an astronaut traveling through the galaxy. An encounter with a wormhole has hurled your spacecraft back to Earth's solar system. You have lost your bearings and the trip through the wormhole has damaged some of your instruments. You know you are orbiting somewhere in Earth's solar system and that you are not in orbit around Earth. You could be orbiting one of the other planets, or Earth's Moon. You need to pinpoint your location and call for help.
The instruments on your cockpit panel tell you about the planet you are orbiting. Each instrument needs a certain amount of power, and the power supply is limited. Try to use as few instruments as possible.
