|“|| Gilly is a lumpy rock wandering around the orbit of Eve. Its by far the smallest natural satellite that the Kerbal Astronomical Society has discovered.
Due to the large amount of squinting and eye strain associated with its discovery, wearing glasses has now become synonymous with becoming an accomplished Astronomer.
— Kerbal Astronomical Society
Topographycaptured asteroid. Gilly has the lowest mass and gravitational force of any body in the Kerbol system. In fact, a Kerbal on Eva has enough Delta-V to achieve orbit. Due to its minuscule mass and gravitational force, it does not have an atmosphere.
Gilly's color might come from a high content of solid carbon. When terrain scatters are enabled in the settings menu, small rocks show up on the surface.
Gilly has the least gravity of all bodies in the Kerbol system at only 0.5% of Kerbin's surface gravity, which is half that of Jool's moon Pol. It is very impractical to walk on Gilly; each step will launch a Kerbal several meters into the air. A Kerbal can jump over 1000 meters on this moon and will usually take around 200 seconds to return to the surface. Again, a Kerbal on Eva has enough Delta-V to achieve orbit. This makes jetpacks a necessity to move around the moon practically.
The low gravity also makes it very difficult to get into an encounter since it makes the sphere of influence so minuscule. An unplanned encounter with Gilly is unlikely when approaching Eve, even if the craft's trajectory is near the plane of Gilly's orbit. Gilly's mass is very small relative to Eve's mass, resulting in a very small sphere of influence compared to the semi-major axis of its orbit. In fact, no other moon in the game has a smaller mass ratio.
Gilly's gravity makes it ideal for very low fuel interplanetary missions; however, its eccentric and inclined orbit may make encounters more difficult and fuel-costly.