Kerbin

Kerbin as seen from orbit in version 0.15.2

File: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

Kerbin is the planet where the Space Center is located and the main focus of Kerbal Space Program. It has two moons, named Mun and Minmus. It orbits the M class star Kerbol.

Characteristics

• Equatorial Radius: 600 km

• Mass: 5.29e22 kg

• Density: 58.467 g/cm^3

• Surface Gravity: 9.81 m/s² or 1 g

• Apparent gravity at the launchpad (Gravity minus Centrifugal acceleration): 9.7535 m/s^2

• Gravitational parameter: 3.5316e12 m³/s²

• Escape velocity from surface: 3430.45 m/s

• Sidereal Rotation Period: 6 hours; Rotation: 60 degrees per hour, or 174.5 m/s at the equator

• Solar Day: 6.0142 hours, or 6 hours, 51 seconds.

• Kerbosynchronous Orbit altitude: 2868.4 km; Kerbostationary Orbit velocity: 1008.9 m/s

Orbital Characteristics

• Parent Body: Kerbol

• Semi-Major Axis: 13,599,840,256m or 0.0909092385 Astronomical Units (A.U.)

• Velocity: 9284.5 m/s

• Longitude of Ascending Node: 0°

• Argument of Periapsis: 0°

• Mean Anomaly at Epoch UT = 0.0: 3.140000 radians

• Orbital Period: 2,543 hours, or 106 Earth days

• Sphere of influence: ~84,159 km or 140 body radii

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.[1] In registered 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]]

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. [3][4]

Pressure == exp(-alt(m)/5000) [units needed]
Density == 1.2223*exp(-alt(m)/5000)  [units needed]

As of 0.15.2, atmospheric temperature varies with altitude in a roughly Earth-like manner.[5]

Natural Satellites

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

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

See Also

• Universe
• Star
• Moon
• Asteroid