Moons of Vilag

Description::Világ has three moons, each of which are very different from both each other and the planet that they orbit.

Sargáhold is a relatively large, terrestrial, planet-like satellite, with a diameter about one-quarter of Világ. The gravitational attraction between the Világ and its moons causes tides on Világ. The same effect on Sargáhold has led to its tidal locking: its rotation period is the same as the time it takes to orbit the Világ. As a result, it always presents the same face to the planet. As Sargáhold orbits Világ, different parts of its face are illuminated by Atla, leading to the lunar phases; the dark part of the face is separated from the light part by the solar terminator. Due to the aforementioned tidal locking, the orbital period and rotaional period is the same 32.6 days. Sargáhold orbits Világ as a ghostly white figure 5.2° off of the Világ–Atla plane.

Veréshold is a relatively small, terrestrial satellite with a slightly irregular shape. The smallest of the three moons, Veréshold's size and shape intimates the possibility that it is a captured asteroid. With an orbital period of only 16.3 days and a rotational period of 11.1 days, Veréshold flies through the night sky much more quickly than the other two moons with an ecliptic of 9.5° off of the Világ–Atla plane. The other striking feature of this moon is the crimson colour which varies from dusky maroon near the horizon to a brilliant crimson high in the night sky.

Kékhold is a massive, terrestrial, planet-like satellite, with a diameter about one-third that of Világ. Kékhold's size and mass cause significant and erratic perturbations in the orbits of the other two moons despite that it orbits over half again as distant from Világ as Sargáhold. Part of the reason for these perturbations is due to the extremely unusual ecliptic, being 47.5° off of the Világ–Atla plane. Kékhold orbits very slowly, with a synodic period of 48.9 days, and has a rotational period of 25.4 days. The result is brilliant cerulean orb which floats through the night sky very differently than its two companions.

Two major effects of such radically different ecliptic and orbital patterns are the lack of moonless nights and the complex tidal forces which play upon the hydrology of Világ.