The moon Sintral orbits around Arxian and looks like a smaller version of Arxian itself. It was named after the Queen Mother’s youngest daughter due to the similar appearance. It has grassland and a small ocean which is more like a large lake along with a large cavern most likely caused by a colliding asteroid or comet at some point in the past. The moon is so close to Arxian that it shares an atmosphere with the planet, but few people ever visit the moon except for Hapan scientists and some farmers from Arxian with stock freighters.

The moon’s orbit around Arxian is only 21 days and the same side always faces the planet. A few times per Arxian year, the moon itself causes a solar eclipse to occur on Arxian as it passes between Arxian and the star at a certain point in the planet’s orbit.

Some scientists believe that Arxian and Sintral may have once been the same planet and a collision with a large object caused it to split in two. There is no evidence to support the theory, but it is the most believable explanation for the situation.

While there are no mammals or reptiles on Sintral, the ocean is filled with fish which, when prepared the right way, are served as a delicacy on many worlds within the Hapes cluster.