"the lowest surface temperature yet measured on any body in the solar system (–200°c) occurs on "

The 'lowest surface temperature' yet measured on any body in the 'solar system' (–200°c) occurs on Triton.

Explanation:

Triton is just another natural satellite of the 13 natural satellites orbiting the planet Neptune. It is identified to be the largest moon of Neptune and has a motion in the direction obverse to that of the planet. It is rotating at a distance of about 2700 kilometers from the planets which also makes it the farthest natural satellite that is orbiting the planet.

Asmall closed hole formed in an outwash plain or moraine. forms when a  glacier retreats then remains stationary. 

Answeraquifer;