Ganymede
From Taijitu
Ganymede (pronounced Gan-EE-meed) is the single and closest moon of Orestes. It was discovered in 1608 by Jonathan Meil, and is the largest moon relative to it's planet. Due to the ocean that covers its surface, it is one of the most likely places for extra-terrestrial life.
Etymology
Ganymede is named after the Pelagian hero of Ganymede, the most beautiful mortal that ever lived. Meil found the rich blue color of the water very beautiful and decided to name it in Ganymede's honor.
Orbital characteristics
Ganymede orbits Orestes at a close distance of 103,800 kilometers. Ganymede would appear very large, over twice the size of Selene when in it's full phase.
Like Selene, Ganymede is tidally locked to Orestes so that only one side faces it.