Kerbin

Kerbin is a planet which is home to the Space Center and the main focus of Kerbal Space Program. It has two moons, named Mun and Minmus. It is the third planet in orbit around the M class star Kerbol. It is the third largest planet after Jool and Eve, and the fourth largest celestial object around Kerbol (the moon Tylo being slightly larger).

Topography

Kerbin has a roughly equal distribution of liquid water and solid land, with polar icecaps and scattered deserts. Between versions 0.7 and 0.14.1 (including the current demo version of 0.13.3), some mountain ranges exceeded 600 m in height. The highest point was at approximately 900 m altitude. In versions 0.14.2 and later, a new terrain engine has resulted in mountains exceeding 3 km high. The tallest mountain at least 3750 m.

Atmosphere

Kerbin has an atmosphere of unknown composition, though because Kerbin has plants and animals, it can be assumed there is O₂, N₂, and CO₂. The atmosphere gets exponentially less dense as altitude increases (5 km scale height), and ends at 69,077.55 meters.

$Pressure=e^{\left({-alt(m) \over 5000}\right)}$ [units needed]

$Density=1.2223*e^{\left({-alt(m) \over 5000}\right)}$ [units needed]

As of 0.15.2, atmospheric temperature varies with altitude in a roughly Earth-like manner.

Natural Satellites

In 0.12+ , Kerbin had a single moon, the Mün. With 0.15, Kerbin has a second satellite, Minmus.

Orbital Statistics

The geosynchronous orbit of Kerbal is at an altitude of 2868.572 km above Kerbal (sea level). The speed of the satellite is 1009.0 m/s and it has an orbital periode resonating with 1 Kerbal day (6 hours or 21600 seconds.) For a semisynchronous orbit of ½ Kerbal day (3 hours or 10800 seconds) an orbit of 1585.063 km above Kerbal is needed with a velocity of 1271.2 m/s

Reference Frames

	Paid (0.17)	Demo (0.13.3)
Rotational/Inertial transition	100,000 m	70,000 m
Warp	Minimum Altitude
1x	Any
2x	n/a	0 m
5x	69,078 m (above the atmosphere)
10x	69,078 m (above the atmosphere)
50x	120,000 m	150,000 m
100x	240,000 m	300,000 m
1,000x	480,000 m	600,000 m
10,000x	480,000 m	1,200,000 m
100,000x	600,000 m	n/a

Gallery

• NJ6qJ.jpg

  A projection map of Kerbin, as of 0.14.1 and before (including the demo)

• 

  An accurate full-colour projection map of Kerbin as of 0.14.2 and above

Changes

?

• Initial Release