Eve/cs

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Eve
Eve
Eve as seen from orbit.
Planet of Kerbol
Orbital Characteristics
Semi-major axis 9 832 684 544 m [Note 1]
Apoapsis 9 931 011 387 m [Note 1]
Periapsis 9 734 357 701 m [Note 1]
Orbital eccentricity 0.01
Orbital inclination 2.1 °
Argument of periapsis 0 °
Longitude of the ascending node 15 °
Mean anomaly 3.14 rad (at 0s UT)
Sidereal orbital period 5 657 995 s
261 d 5 h 39 m 55.1 s
Synodic orbital period 14 687 035,5 s
Orbital velocity 10 811 - 11 029 m/s
Physical Characteristics
Equatorial radius 700 000 m
Equatorial circumference 4 398 230 m
Surface area 6,1575216×1012 m2
Mass 1,2243980×1023 kg
Standard gravitational parameter 8,1717302×1012 m3/s2
Density 85 219,677 kg/m3
Surface gravity 16,7 m/s2 (1.701 g)
Escape velocity 4 831,96 m/s
Sidereal rotation period 80 500,000 s
3 d 4 h 21 m 40 s
Solar day 81 661,857 s
3 d 4 h 41 m 1.9 s
Sidereal rotational velocity 54,636 m/s
Synchronous orbit 10 328,47 km
Sphere of influence 85 109 365 m [Note 1]
Atmospheric Characteristics
Atmosphere present Yes
Atmospheric pressure 506,625 kPa
5 atm
Atmospheric height 90 000 m
5,0×10-6 atm
Temperaturemin -113.13 °C 160.02 K
Temperaturemax 146.85 °C 420 K
Oxygen present No
Scientific multiplier
Surface 8
Splashed 8
Lower atmosphere 6
Upper atmosphere 6
Near space 7
Outer space 5
Recovery 5

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

Eve je druhá planeta systému Kerbolu a zároveň je druhým největším tělesem, které hvězdu obíhá. Má fialový vzhled. Má jeden malý měsíc, zachycený asteroid nazvaný Gilly.

Eve je nejbližší planeta ke Kerbinu a nejlehčí cíl, s potřebou nejnižší Delta-V jakékoli planety. S velikostí podobnou Kerbinu, má i podobnou gravitaci. Její hustá atmosféra umožňuje lehké přistání, ale také činí vzlet z planety téměř nemožným, s potřebou nejvyšší Delta-V jakékoli jiné planety.

Topografie

Eve má několik oceánů a velké, rovné kontinenty s několika horami. V západní části planety se nachází velký kráter. Povrch připomíná fialové písečné duny.

Atmosféra

Porovnání atmosfér Eve a Kerbinu

Atmosféra Eve začíná na 96,708.6 metrech a je extrémně hustá: v 11,250 metrech, je hustá jako atmosféra Kerbinu nad hladinou moře (1 atm) a tlak její atmosféry na povrchu je 5 atm. Její atmosféra řídne exponenciálně, s výškou 7000 metrů.

In general, the atmospheric pressure on Eve at an altitude expressed in meters is:[1]

From within Eve's atmosphere, the sky appears indigo during nighttime. During dawn and dusk, the sky is green. The atmosphere is possibly composed of iodine, given its purple coloration.

Jet engines do not function in Eve's atmosphere, since it contains no oxygen — they make noise and consume fuel, but they produce no thrust.

As with version 0.17.1 of aerobraking maneuver arriving from Kerbin and resulting in to orbit around Eve - without using fuel for braking - can be done aiming for at periapsis at aproximately 72500m.

The following table gives terminal velocities at different Eve altitudes. These are also the velocities at which a ship should travel for a fuel-optimal ascent from Eve, given the game's model of atmospheric drag.[2]

Altitude (m) Velocity (m/s)
0 58,4
1000 62,5
5000 82,0
10000 115
15000 162
20000 228
30000 450
40000 888
50000 1,76×103
60000 3,47×103

Natural Satellites

Eve's only natural satellite is the tiny captured asteroid Gilly in a highly eccentric and inclined orbit. Gilly is currently the smallest celestial body in the Kerbol system.

Orbital Statistics

A geosynchronous orbit of Eve requires an altitude of 10373.195 km and a velocity of 858.95 m/s. For a semisynchronous orbit of ½ Eve day (11.25 hours or 40500 seconds) an orbit of 6275.676 km above Eve is needed with a velocity of 1082.2 m/s.

Reference Frames

Time warp Minimum Altitude
Any
5× 90 000 m (above the atmosphere)
10× 90 000 m (above the atmosphere)
50× 90 000 m (above the atmosphere)
100× 120 000 m
1 000× 240 000 m
10 000× 480 000 m
100 000× 600 000 m

Gallery

Changes

0.18
  • Grafické přepracování
0.17
  • Přidání do hry

Notes

  1. A nuclear engine has a specific impulse of 220 in 1 atm or higher, 800 in vacuum, and the following at various Eve altitudes:
    altitude (m) 11263 11268 11322 11598 11896 12200 12799 13868 14586 15292 16725 18711 22800 23556 32000 38000 43000 51963
    specific impulse 220 220.2 224.6 246.9 269.9 292.4 334.0 400.0 438.8 473.4 533.7 600.2 688.2 699.8 769.8 787.3 793.8 798.3
  2. http://forum.kerbalspaceprogram.com/showthread.php/6664-Mini-challenge-max-altitude-with-this-supplied-spacecraft?p=100912&viewfull=1#post100912