Difference between revisions of "Kerbin"

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m (Bold moon names in introduction; clean up the atmospheric pressure/density formulas.)
m (Specify a color argument (the color of the corresponding dot in the Tracking Station).)
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|imgdesc=<small>Kerbin as seen from orbit in {{version|0.15.2}}</small>
|imgdesc=<small>Kerbin as seen from orbit in {{version|0.15.2}}</small>

Revision as of 03:21, 2 October 2012


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).


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.[1] 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.[2]


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 ends at 69,077.55 meters and, as on Earth, becomes exponentially less dense as altitude increases (with a scale height of 5 km).[3] In general, the atmospheric pressure and density on Kerbin, at an altitude expressed in meters, are:


Geosynchronous orbit is achieved at an altitude of 2868.4 km above sea level. A Semi Synchronous Orbit with an orbital period of 1/2 of Kerbal (3 hours or 10800 seconds) is achieved at an orbit of 1585.4 km above sea level. The orbital velocity is 1271.4 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



  • Initial Release


  1. http://kerbalspaceprogram.com/forum/index.php?topic=6446.0
  2. http://kerbalspaceprogram.com/forum/index.php?topic=11388.msg176509#msg176509
  3. http://kerbalspaceprogram.com/forum/showthread.php/16000-KGSS-Examining-Kerbin-s-atmosphere