Neptuneís odd satellites

Neptuneís odd satellites

. Nereid, the outermost of Neptuneís satellites, travels in a highly inclined, eccentric orbit, in the same direction as that of the planetís rotation. Triton, the largest satellite of Neptune, travels around Neptune in a circular obit, but, unlike any other large satellite of the giant planets, it travels in the opposite retrograde direction to the rotation of Neptune. In addition, careful analysis of Tritonís motions shows that the satellite is in a decaying orbit and is slowly being pulled toward Neptune.

Copyright 2010, Professor Kenneth R. Lang, Tufts University