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{{Planetbox
+
{{Infobox/Body}}
|Class=Planet
 
|File=Kerbin18.png
 
|Parent=Kerbol
 
|apoap= 13599840256 <!-- from Kerbol's center, not its surface -->
 
|orbinc=0
 
|anomaly=3.14
 
|orbps=9203544.61750141
 
|radius=600000
 
|mass=5.29157926281091e22
 
|sidrot=21600
 
|SoI=84159286.4796305
 
|highest=4044
 
|atmosatm=1
 
|atmossh=5000
 
|T-minC=-40.19
 
|T-maxC=20
 
|O2yorn=Yes
 
}}
 
  
'''Kerbin''' is the home planet of the [[Kerbal]]s, the location of the [[Kerbal Space Center|Space Center]], and the main focus of [[Kerbal Space Program]]. It is the [[w:Earth|Earth]] analog for the game. It has two [[moon]]s, named '''[[Mün]]''' and '''[[Minmus]]'''.
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'''Kerbin''' är Kerbal Space Programs analog av människornas planet jorden. Planeten Kerbin är hemplaneten till de gröna varelserna [[Kerbal]]s. Det är även denna planet som står i centrum i spelet - [[Kerbal Space Center/sv|Kerbal Space Center]] ligger nämligen där. Kerbin har två [[månar]]: den ena med namnet '''[[Mün]]''', som också är den största och närmaste liggande till Kerbin. Den andre månen heter '''[[Minmus]]''', den är minst och ligger längst bort från Kerbin räknat.
  
Kerbin is the third planet in [[orbit]] around the star [[Kerbol]]. It is the third largest planet (after [[Jool]] and [[Eve]]) and the fourth largest celestial object around Kerbol (with [[Tylo]], a moon of Jool, being slightly larger).
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Kerbin är den tredje planeten i omloppsbana räknat runt stjärnan [[Kerbol/sv|Kerbol]]. Kerbin är den tredje största planeten (efter [[Jool/sv|Jool]] och [[Eve/sv|Eve]]). Den är också den fjärde största himlakroppen runt Kerbol.
  
Reaching a stable orbit around Kerbin is one of the first milestones a player might achieve in the game. Achieving such an orbit with a fuel-optimal ascent<ref>A fuel-optimal ascent is one which (a) minimizes velocity losses to gravity and [[atmosphere|atmospheric drag]] and (b) launches eastward (toward the 90 degree heading) to gain 174.5 m/s of orbital velocity for free, thanks to Kerbin's rotation.</ref> requires a delta-V of ≈4500 m/s,<ref>See [http://forum.kerbalspaceprogram.com/showthread.php/24017-Least-delta-v-to-orbit this challenge on the forum] and a popular [http://i.imgur.com/CEZS1.png Kerbin delta-V chart]</ref> the second largest of all celestial bodies with a solid surface after [[Eve]]. For many interplanetary missions, this represents over half of the flight's total delta-V requirement. This is also true of Earth-based interplanetary spaceflights, leading one observer to remark that:
+
Att lyckas komma upp i omloppsbana runt Kerbin är något av de första milstolparna en spelare brukar uppnå. Att lyckas skapa en sådan omloppsbana med optimalt bränsleanvändande uppskjutning<ref>A fuel-optimal ascent is one which (a) minimizes velocity losses to gravity and [[atmosphere|atmospheric drag]] and (b) launches eastward (toward the 90 degree heading) to gain 174.5 m/s of orbital velocity for free, thanks to Kerbin's rotation.</ref> kräver en delta-V ≈4500&nbsp;m/s, <ref>See [http://forum.kerbalspaceprogram.com/showthread.php/24017-Least-delta-v-to-orbit this challenge on the forum] and a popular [http://i.imgur.com/CEZS1.png Kerbin delta-V chart]</ref> vilket är den andra största delta-V-förändringen i spelet efter [[Eve/sv|Eve]]. För många interplanetariska uppdrag uppgör denna delta-V-kostnad hälften av uppdragets totala delta-V-kapacitet. Detta stämmer även med riktiga rymdresor på jorden, vilket har gett oss citatet:
{{Quote|If you can get your ship into orbit, you're halfway to anywhere.|Robert Heinlein|quoted on page 194 of ''A Step Farther Out'' by Jerry Pournelle}}
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{{Quote|If you can get your ship into orbit, you're halfway to anywhere.|Robert Heinlein|quoted on page 194 of ''A Step Farther Out'' by Jerry Pournelle}} vilket kan direktöversättas till "Om du kan få upp ditt skepp i omloppsbana är du halvvägs till en resa var du vill".
  
== Topography ==
+
 
[[File:Kerbin_heightmap.jpg|thumb|left|Topographical representation of Kerbin's surface as of .18.2. Click for high resolution. by Zeroignite]]
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== Topografi ==
Kerbin has a roughly equal distribution of surface liquid water and solid land, with polar icecaps and scattered deserts. There are mountains exceeding 4 km in height, with the tallest peak being just under 4044 m in altitude.
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[[File:Kerbin heightmap.jpg|thumb|left|Topografisk representation av Kerbins yta i version .18.2. Klicka för högre upplösning. av Zeroignite]]
 +
Kerbin har en ganska jämlik spridning av flytande vatten och land, med polarisregioner och spridda öknar.
 +
Det finns berg som stiger upp till 6&nbsp;km över havet, där det högsta berget är 6767 meter över havet. Den lägsta punkten ligger nästan 1.4 kilometer under havsytan.
  
 
Kerbin shows signs of having been impacted by an asteroid or comet. That is visible in the large crater in the western hemisphere. The crater's central peak is visible from orbit and was caused by the compression followed by the rebound of material in the center of the crater.
 
Kerbin shows signs of having been impacted by an asteroid or comet. That is visible in the large crater in the western hemisphere. The crater's central peak is visible from orbit and was caused by the compression followed by the rebound of material in the center of the crater.
 
<div style="clear:left;"></div>
 
<div style="clear:left;"></div>
== Atmosphere ==
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== Atmosfär ==
<!-- SPECULATION: Kerbin has an atmosphere of unknown composition, though because Kerbin has plants and animals, it can be assumed there is O<sub>2</sub>, N<sub>2</sub>, and CO<sub>2</sub>. -->Kerbin's [[atmosphere]] contains oxygen and extends to roughly 69,078 meters. Its atmosphere becomes exponentially less dense as altitude increases (with a scale height of 5 km).<ref>{{forum link|threadID=16000|threadName=&#91;KGSS&#93; Examining Kerbin's atmosphere}}</ref> In general, the atmospheric pressure on Kerbin, at an altitude expressed in meters, is:
+
<!-- SPECULATION: Kerbin has an atmosphere of unknown composition, though because Kerbin has plants and animals, it can be assumed there is O<sub>2</sub>, N<sub>2</sub>, and CO<sub>2</sub>. -->Kerbin's [[atmosphere]] contains oxygen and extends to roughly 69,078 meters. Its atmosphere becomes exponentially less dense as altitude increases (with a scale height of 5&nbsp;km).<ref>{{forum link|threadID=16000|threadName=&#91;KGSS&#93; Examining Kerbin's atmosphere}}</ref> In general, the atmospheric pressure on Kerbin, at an altitude expressed in meters, is:
  
 
: <math>p_k = e^{-altitude/5000}</math>
 
: <math>p_k = e^{-altitude/5000}</math>
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|}
 
|}
  
== Orbits ==
+
== Omloppsbanor ==
[[File:Screenshot39.png|thumbnail|left|A Stayputnik Orbiter]]
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[[File:Sputnik in Kerbin's orbit.png|thumbnail|left|A Stayputnik Orbiter]]
[[w:Geosynchronous_orbit|Geosynchronous orbit]] is achieved at an altitude of
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[[w:Geosynchronous orbit|Geosynchronous orbit]] is achieved at an altitude of
{{OrbitAltitude | period_s=21600 | mass_kg=5.29157926281091e22 | radius_km=600 }} (1008.9 m/s).  From a 70km low equatorial orbit, the periapsis maneuver requires 676.5m/s and the apoapsis maneuver requires 434.9m/s. A [[w:semi-synchronous_orbit|semi-synchronous orbit]] with an orbital period of 1/2 of Kerbin's rotation period (3 hours or 10800 seconds) is achieved at an altitude of  
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{{OrbitAltitude|b=Kerbin|f=k}} (1008.9&nbsp;m/s).  From a 70&nbsp;km low equatorial orbit, the periapsis maneuver requires 676.5&nbsp;m/s and the apoapsis maneuver requires 434.9&nbsp;m/s. A [[w:semi-synchronous orbit|semi-synchronous orbit]] with an orbital period of 1/2 of Kerbin's rotation period (3 hours or 10800 seconds) is achieved at an altitude of  
{{OrbitAltitude | period_s=10800 | mass_kg=5.29157926281091e22 | radius_km=600 }} with an orbital velocity of
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{{OrbitAltitude|b=Kerbin|f=k|pf=1/2}} with an orbital velocity of
{{OrbitVelocity | period_s=10800 | mass_kg=5.29157926281091e22 | radius_km=600 }}.
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{{OrbitVelocity|b=Kerbin|pf=1/2}}.
 
<div style="clear:left;"></div>
 
<div style="clear:left;"></div>
== Interplanetary Travel ==
 
  
From the lowest stable orbit around Kerbin (70 km), the amount of delta-V needed to reach the orbits of other celestials is as follows:
+
== Interplanetära Resor ==
 +
 
 +
From the lowest stable orbit around Kerbin (70&nbsp;km), the amount of delta-V needed to reach the orbits of other celestials is as follows:
  
 
{| class="wikitable"
 
{| class="wikitable"
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|-
 
|-
 
| [[Mün]]
 
| [[Mün]]
|colspan="2"| ~860 m/s
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|colspan="2"| ~860&nbsp;m/s
 
|-
 
|-
 
| [[Minmus]]
 
| [[Minmus]]
|colspan="2"| ~930 m/s
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|colspan="2"| ~930&nbsp;m/s
 
|-
 
|-
 
| [[Eve]]
 
| [[Eve]]
|colspan="2"| ~1033 m/s
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|colspan="2"| ~1033&nbsp;m/s
 
|-
 
|-
 
| [[Duna]]
 
| [[Duna]]
|colspan="2"| ~1060 m/s
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|colspan="2"| ~1060&nbsp;m/s
 
|-
 
|-
 
| [[Moho]]
 
| [[Moho]]
|colspan="2"| ~1676 m/s
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|colspan="2"| ~1676&nbsp;m/s
 
|-
 
|-
 
| [[Jool]]
 
| [[Jool]]
|colspan="2"| ~1915 m/s
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|colspan="2"| ~1915&nbsp;m/s
 
|-
 
|-
  
 
| [[Eeloo]]
 
| [[Eeloo]]
|colspan="2"| ~2100 m/s
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|colspan="2"| ~2100&nbsp;m/s
 
|-
 
|-
 
| [[KEO]] (comparison)
 
| [[KEO]] (comparison)
|colspan="2"| ~1120 m/s
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|colspan="2"| ~1120&nbsp;m/s
 
|-
 
|-
 
|}
 
|}
  
== Reference Frames ==
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== Referensramar ==
{{ReferenceFrames|69,078|69,078|69,078|120,000|240,000|480,000|600,000|69,078|69,078|150,000|300,000|600,000|1,200,000|paid=0.17|demo=0.13.3|trans-paid=100,000|trans-demo=70,000|atmosphere-paid=69,078|atmosphere-demo=69,078}}
+
{{:Kerbin/RefFrame}}
  
== Gallery ==
+
== Galleri ==
 
<gallery>
 
<gallery>
NJ6qJ.jpg                  | A projection map of Kerbin, as of {{version|0.14.1|}} and before (including the demo).
+
Kerbin map from 0.14.jpg                  | A projection map of Kerbin, as of {{version|0.14.1|}} and before (including the demo).
 
Kerbin color.png          | An accurate full-colour projection map of Kerbin as of {{version|0.14.2|}} to {{version|0.17.1|}}
 
Kerbin color.png          | An accurate full-colour projection map of Kerbin as of {{version|0.14.2|}} to {{version|0.17.1|}}
 
KerbinDeltaVMap.png        | A map displaying the delta V needed from/to Kerbin
 
KerbinDeltaVMap.png        | A map displaying the delta V needed from/to Kerbin
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</gallery>
 
</gallery>
  
== Changes ==
+
== Ändringar ==
 
;{{Version|0.18|}}
 
;{{Version|0.18|}}
 
*Terrain overhaul: Entire planet redo. Deserts, darker and greener grass, islands, darker ocean/water, snow capped mountains. Looks more realistic.
 
*Terrain overhaul: Entire planet redo. Deserts, darker and greener grass, islands, darker ocean/water, snow capped mountains. Looks more realistic.
Line 138: Line 123:
 
* Initial Release
 
* Initial Release
  
== Notes ==
+
== Referenser ==
 
<references />
 
<references />
 
  
 
{{Celestial Bodies}}
 
{{Celestial Bodies}}
{{Languages}}
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[[Category:Celestials/sv]]
[[Category:Celestials]]
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[[Category:Planets/sv]]
[[Category:Planets]]
 

Latest revision as of 18:29, 17 March 2017

Kerbin
Kerbin
Kerbin as seen from orbit.
Planet of Kerbol
Orbital Characteristics
Semi-major axis 13 599 840 256 m [Note 1]
Apoapsis 13 599 840 256 m [Note 1]
Periapsis 13 599 840 256 m [Note 1]
Orbital eccentricity 0
Orbital inclination 0 °
Argument of periapsis 0 °
Longitude of the ascending node 0 °
Mean anomaly 3.14 rad (at 0s UT)
Sidereal orbital period 9 203 545 s
426 d 0 h 32 m 24.6 s
Synodic orbital period Not defined
Orbital velocity 9 285 m/s
Physical Characteristics
Equatorial radius 600 000 m
Equatorial circumference 3 769 911 m
Surface area 4,5238934×1012 m2
Mass 5,2915158×1022 kg
Standard gravitational parameter 3,5316000×1012 m3/s2
Density 58 484,090 kg/m3
Surface gravity 9,81 m/s2 (1 g)
Escape velocity 3 431,03 m/s
Sidereal rotation period 21 549,425 s
5 h 59 m 9.4 s
Solar day 21 600,000 s
5 h 59 m 60 s
Sidereal rotational velocity 174,94 m/s
Synchronous orbit 2 863,33 km
Sphere of influence 84 159 286 m [Note 1]
Atmospheric Characteristics
Atmosphere present Yes
Atmospheric pressure 101,325 kPa
1 atm
Atmospheric height 70 000 m
1,0×10-6 atm
Temperaturemin -86.20 °C 186.95 K
Temperaturemax 15 °C 288.15 K
Oxygen present Yes
Scientific multiplier
Surface 0.3
Splashed 0.4
Lower atmosphere 0.7
Upper atmosphere 0.9
Near space 1
Outer space 1.5
Recovery 1

  1. 1.0 1.1 1.2 1.3 The distances are given from the body's center, not from the surface (unlike ingame)

Kerbin är Kerbal Space Programs analog av människornas planet jorden. Planeten Kerbin är hemplaneten till de gröna varelserna Kerbals. Det är även denna planet som står i centrum i spelet - Kerbal Space Center ligger nämligen där. Kerbin har två månar: den ena med namnet Mün, som också är den största och närmaste liggande till Kerbin. Den andre månen heter Minmus, den är minst och ligger längst bort från Kerbin räknat.

Kerbin är den tredje planeten i omloppsbana räknat runt stjärnan Kerbol. Kerbin är den tredje största planeten (efter Jool och Eve). Den är också den fjärde största himlakroppen runt Kerbol.

Att lyckas komma upp i omloppsbana runt Kerbin är något av de första milstolparna en spelare brukar uppnå. Att lyckas skapa en sådan omloppsbana med optimalt bränsleanvändande uppskjutning[1] kräver en delta-V på ≈4500 m/s, [2] vilket är den andra största delta-V-förändringen i spelet efter Eve. För många interplanetariska uppdrag uppgör denna delta-V-kostnad hälften av uppdragets totala delta-V-kapacitet. Detta stämmer även med riktiga rymdresor på jorden, vilket har gett oss citatet:

If you can get your ship into orbit, you're halfway to anywhere.

Robert Heinlein, quoted on page 194 of A Step Farther Out by Jerry Pournelle

vilket kan direktöversättas till "Om du kan få upp ditt skepp i omloppsbana är du halvvägs till en resa var du vill".


Topografi

Topografisk representation av Kerbins yta i version .18.2. Klicka för högre upplösning. av Zeroignite

Kerbin har en ganska jämlik spridning av flytande vatten och land, med polarisregioner och spridda öknar. Det finns berg som stiger upp till 6 km över havet, där det högsta berget är 6767 meter över havet. Den lägsta punkten ligger nästan 1.4 kilometer under havsytan.

Kerbin shows signs of having been impacted by an asteroid or comet. That is visible in the large crater in the western hemisphere. The crater's central peak is visible from orbit and was caused by the compression followed by the rebound of material in the center of the crater.

Atmosfär

Kerbin's atmosphere contains oxygen and extends to roughly 69,078 meters. Its atmosphere becomes exponentially less dense as altitude increases (with a scale height of 5 km).[3] In general, the atmospheric pressure on Kerbin, at an altitude expressed in meters, is:

The following table gives approximation of terminal velocities at different Kerbin altitudes. These are also the velocities at which a ship should travel for a fuel-optimal ascent from Kerbin, given the game's model of atmospheric drag (0.18.1).[4]

Altitude (m) Velocity (m/s)
0 97.3
1000 110
3000 130
5000 160
8000 215
10000 260
15000 425
32000 2250

Omloppsbanor

A Stayputnik Orbiter

Geosynchronous orbit is achieved at an altitude of 2 863,33 km (1008.9 m/s). From a 70 km low equatorial orbit, the periapsis maneuver requires 676.5 m/s and the apoapsis maneuver requires 434.9 m/s. A semi-synchronous orbit with an orbital period of 1/2 of Kerbin's rotation period (3 hours or 10800 seconds) is achieved at an altitude of 1 581,76 km with an orbital velocity of 1 272,28 m/s.

Interplanetära Resor

From the lowest stable orbit around Kerbin (70 km), the amount of delta-V needed to reach the orbits of other celestials is as follows:

Body Delta-V
Mün ~860 m/s
Minmus ~930 m/s
Eve ~1033 m/s
Duna ~1060 m/s
Moho ~1676 m/s
Jool ~1915 m/s
Eeloo ~2100 m/s
KEO (comparison) ~1120 m/s

Referensramar

Time warp Minimum Altitude
Any
5× 70 000 m (above the atmosphere)
10× 70 000 m (above the atmosphere)
50× 70 000 m (above the atmosphere)
100× 120 000 m
1 000× 240 000 m
10 000× 480 000 m
100 000× 600 000 m

Galleri

Ändringar

0.18
  • Terrain overhaul: Entire planet redo. Deserts, darker and greener grass, islands, darker ocean/water, snow capped mountains. Looks more realistic.
  • Several Easter Eggs added.
  • Airport added to island off of KSC coastline. (Not a launching point)
0.17
  • Improved atmosphere visuals.
0.15
0.14.2
  • Much more varied and taller terrain added. Prior to this, some mountain ranges exceeded 600 m in height, but the tallest point was at an altitude of approximately 900 m.
0.12
0.11
  • Terrain overhaul, oceans became wet.
0.10.1
  • Atmosphere extended from ~34,500 m to ~69,000 m.
?
  • Initial Release

Referenser

  1. A fuel-optimal ascent is one which (a) minimizes velocity losses to gravity and atmospheric drag and (b) launches eastward (toward the 90 degree heading) to gain 174.5 m/s of orbital velocity for free, thanks to Kerbin's rotation.
  2. See this challenge on the forum and a popular Kerbin delta-V chart
  3. Forum thread 16000, "[KGSS] Examining Kerbin's atmosphere"
  4. http://forum.kerbalspaceprogram.com/showthread.php/6664-Mini-challenge-max-altitude-with-this-supplied-spacecraft?p=100912&viewfull=1#post100912
  5. http://forum.kerbalspaceprogram.com/entry.php/247-A-Brave-New-World