Luna

Luna, known as Raenei, the Greater Moon, or the Mistress, is the world's silver satellite, the companion to the Lesser Moon, Celene.
From the perspective of the earth, it cycles from its new to full phases once a month.
From the lands, Luna doesn't appear much larger than Celene, but the difference is noticeable. Because it appears as if it is larger than the sun (it isn't), solar eclipses are less spectacular when Luna is involved.
Luna appears as a featureless silver disk (varying between white, silver, and gray, with cloud cover creating a slight sense of changing patterns). Two atmospheres obscure the moon's terrain so the haze makes it impossible to see any detail. Luna's atmosphere can refract light, though—when the conditions are right, during an eclipse the light from Celene will reflect in Luna's atmosphere, causing it to seem to be surrounded by a shining aquamarine halo.

Geography

Unlike Celene, Luna isn't tidally locked with the world; it rotates on its own axis, and shows the "mother planet" both of its sides. However, both sides look the same, so this doesn't make much difference.
Luna's surface is mostly dry land, with water covering only about 30% of it.

Two Moons - Celene and Luna by Unknown

Type

Planetoid / Moon