🟢👽 The Kerbol System

Kerbol (Sun)

The Sun (also known as Kerbol) is the parent star of the planetary system in KSP, popularly referred to as the Kerbol System. Kerbol contains 99.97 % of the mass in the Kerbol system. This is very similar to our sun which contains 99.86 % of the mass in the real-world solar system. “Kerbol” is a fan-made combination of the words “Kerbal” and “Sol” — the Latin name for the real-life Sun.

Moho (Mercury)

Moho is the third-smallest planet and the one closest to Kerbol, with an orbital period of 102 days, the shortest in the Kerbol system, and an orbital velocity ranging from 12-18km/s, is also the fastest celestial body in KSP – Kerbal Space Program. It is the Mercury analogue. Moho lacks an atmosphere and natural satellites.

Eve (Venus)

Eve is the second planet from Kerbol, the closest planet to Kerbin, and KSP’s analogue for the planet Venus. It has one small moon: a asteroid called Gilly. It is especially notable for its extremely dense atmosphere, which makes aerobraking and returning two of the most dangerous activities in the game. Additionally, Eve has the greatest surface gravity of all the planets, and the second-highest escape velocity, second only to Jool.

Kerbin (Earth)

Kerbin is the home planet of the Kerbals, the location of the Space Center, and the main focus of the Kerbal Space Program. It is also the Earth analogue for the game and has two moons named Mun and Minmus. Kerbin is the third planet in orbit around the star Kerbol. It is the third-largest celestial body that orbits Kerbol, following Jool and Eve. Jool’s moon Tylo has the same radius of Kerbin, though it may be classified as larger, as the highest point on Tylo is about 5 km higher than the highest point on Kerbin. However, Tylo has only 80% of Kerbin’s mass.

Duna (Mars)

Duna is the fourth planet from Kerbol and the fourth-largest planet. It is the Mars analogue for Kerbal Space Program. It has one large natural satellite, the moon Ike. Duna is a terrestrial planet with a red-brown surface and polar ice caps similar to that of Kerbin. Duna’s orbit has nearly the same inclination as Kerbin around Kerbol, making the planet one of the easiest to encounter.

Dres (Ceres)

Dres is the fifth planet in the Kerbol star system. It is located between Duna and Jool in a somewhat eccentric and inclined orbit. It is considered to be the Ceres analogue for the game. It is similar to Moho and Eeloo in that it has no atmosphere and no natural satellites (aside from a ring system of asteroids). Dres has the least gravity of any planet in the Kerbol system. Dres is considered a dwarf planet by the game because it has not “cleared its neighbourhood”; in other terms, it has asteroids in close proximity.

Jool (Jupiter)

Jool is a gas giant and the sixth planet of the Kerbol star system. It is the Jupiter analogue for Kerbal Space Program. Aside from Kerbol, Jool has the largest diameter and greatest mass of all celestial bodies. Its extremely high gravity makes orbital manoeuvres unpleasantly expensive. While its distance from Kerbin makes it difficult to reach, it is one of the most appealing targets for missions due to its large and complex system of five moons: Laythe, Vall, Tylo, Bop, and Pol.

Eeloo (Pluto)

Eeloo is a dwarf planet, it is the seventh and farthest planet from Kerbol most of the time, though its orbit intersects Jool’s, passing in front of it for a minority of its revolution period. The two planets are locked in a 3:2 resonance, which, coupled with their different inclinations, ensures they cannot collide. Eeloo has just 3.5% more gravity than the Mun and is very similar in size. Like the Mun, it has no atmosphere. The physical characteristics of Eeloo are most likely an analogue of the ice moon Europa, and its orbit is similar to that of Pluto, though both bodies are known to have a tenuous atmosphere.