Laythe

Laythe Moon of Jool
A photograph of Laythe taken by the crew of the JFDF reconnaissance picket Serina on December 7th, 2133 while departing the moon's SOI.
Orbital Parameters
Apoapsis		27,184,000m
Periapsis		27,184,000m
Semi-major axis		27,184,000m
Orbital eccentricity		0
Orbital period (sidereal)		2.4528224 days
Average orbital speed		3.224km/s
Mean anomaly		179.909°
Inclination		0°
Satellites		None
Physical Characteristics
Equatorial radius		500,000m
Circumference		3,141,593m
Surface area		3.1415927×1012m2
Mass		2.93973×1022kg
Mean density		56,144.728kg/m3
Surface gravity		7.85m/s<sup2 (0.8g)
Escape velocity		2.801km/s
Sidereal rotation period		52,980.879s 2d,2h,43m,0.9s)
Solar day		21,600s (6h,0m,0s)
Axial tilt		0°
Surface equivalent dose rate		0.359μSv/h
Surface atmospheric pressure		60.7950kPa (0.6 atm)
Sphere of influence		3,723,645m
History
Discovered		some time
Landed upon		April 22, 2054

Laythe is the first moon of Jool and one of only two bodies in the Kerbol System to sustain liquid surface water. Aside from Kerbin, it is the only celestial body known to possess an oxygen rich breathable atmosphere. Approximately 87% of the moon's surface is covered by oceans. Laythe is locked an orbital resonance with the two other largest Joolian moons, Vall and Tylo.

While fossil records of large indigenous aquatic organisms have been found, when the moon was first landed on in 2054 by Grestian settlers it was found to be devoid of all life. Since falling under the jurisdiction of the Joolian Federation, several ecosystem seeding projects have been carried out, and Laythe now supports small patches of free growing vegetation and animal species.

A large circular archipelago covering over a third of the moon's surface area suggests that in the past Laythe was involved in a massive collision with another body, likely during the period of events that formed the Joolian system as it is today.