Difference between revisions of "Ike"
(Rewording; fix the gallery; mention the large SOI relative to the distance of Ike's orbit.) |
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{{Planetbox | {{Planetbox | ||
|Class=Moon | |Class=Moon | ||
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− | '''Ike''' is a [[moon]] and the only [[w:natural satellite|natural satellite]] of [[Duna]]. | + | '''Ike''' is a [[moon]] and the only [[w:natural satellite|natural satellite]] of [[Duna]]. Ike has steep, rocky slopes and no atmosphere. Ike and Duna are tidally locked due to their proximity and Ike's size. |
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+ | An encounter with Ike is quite likely when approaching Duna, provided the player's trajectory is near the plane of Ike's orbit. This is because Ike's sphere of influence is very high relative to the semi-major axis of its orbit — in fact, no other moon in the game has a larger SOI-to-semi-major-axis ratio.<!-- | ||
+ | Gilly: 0.00400391333 | ||
+ | Mun: 0.20246325833 | ||
+ | Minmus: 0.04781762553 | ||
+ | Ike: 0.32799965625 | ||
+ | Laythe: 0.13697931872 | ||
+ | Vall: 0.05576569800 | ||
+ | Tylo: 0.15848931387 | ||
+ | Bop: 0.00950241914 | ||
+ | --> | ||
+ | |||
+ | Stationary orbit around Ike is not possible — it would require an altitude of | ||
+ | {{OrbitAltitude | period_s=64980 | mass_kg=2.78219487161284e20 | radius_km=130 }}, outside of Ike's sphere of influence. However, since Ike and Duna are tidally locked to each other, a spacecraft in stationary orbit around Duna will see Ike in a stable, non-rotating position, as it would appear in a stationary Ike orbit. | ||
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+ | == Topography == | ||
+ | |||
+ | Ike is extremely rocky, with craters that span for many kilometers. Its tallest points are 12.75 km above its lowest, giving it an elevation range over 3 times that of the [[Mun]]<!--3.34 km--> despite the fact that the Mun has a 54% wider radius and 137% more surface area. The increased elevation and smaller size result in many steep slopes and make landing quite difficult. The bottoms of craters are among the flatter, safer landing locations. | ||
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== Reference Frames == | == Reference Frames == | ||
− | Rotational/Inertial transition: 100 | + | Rotational/Inertial transition: 100 km? |
{| class="wikitable" | {| class="wikitable" | ||
|- | |- | ||
− | + | | '''Warp''' || 5x, 10x || 50x || 100x || 1000x || 10,000x || 100,000x | |
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− | | 5x | ||
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− | | 50x | ||
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− | | 100x | ||
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− | | 10,000x | ||
− | | 100, | ||
|- | |- | ||
− | | 100 | + | | '''Minimum altitude''' || 5 km || 10 km || 25 km || 50 km || 100 km || 200 km |
− | | 200 | ||
|} | |} | ||
== Gallery == | == Gallery == | ||
<gallery> | <gallery> | ||
− | Ike_Eclipse | + | Ike_Eclipse.png | Ike eclipsing Duna |
− | Ike | + | Ike.png | Ike as seen in the Tracking Station |
− | Gui_Ike_ISA_Topo | + | Gui_Ike_ISA_Topo.png | Topographical map of Ike |
− | Gui_Ike_Polars_Topo | + | Gui_Ike_Polars_Topo.png | Polar topographical map |
− | Ike_map_800 | + | Ike_map_800.gif | A topographic height map of Ike made with the ISA MapSat plugin |
</gallery> | </gallery> | ||
Revision as of 17:48, 26 October 2012
Ike is a moon and the only natural satellite of Duna. Ike has steep, rocky slopes and no atmosphere. Ike and Duna are tidally locked due to their proximity and Ike's size.
An encounter with Ike is quite likely when approaching Duna, provided the player's trajectory is near the plane of Ike's orbit. This is because Ike's sphere of influence is very high relative to the semi-major axis of its orbit — in fact, no other moon in the game has a larger SOI-to-semi-major-axis ratio.
Stationary orbit around Ike is not possible — it would require an altitude of 0.00 m, outside of Ike's sphere of influence. However, since Ike and Duna are tidally locked to each other, a spacecraft in stationary orbit around Duna will see Ike in a stable, non-rotating position, as it would appear in a stationary Ike orbit.
Contents
Topography
Ike is extremely rocky, with craters that span for many kilometers. Its tallest points are 12.75 km above its lowest, giving it an elevation range over 3 times that of the Mun despite the fact that the Mun has a 54% wider radius and 137% more surface area. The increased elevation and smaller size result in many steep slopes and make landing quite difficult. The bottoms of craters are among the flatter, safer landing locations.
Reference Frames
Rotational/Inertial transition: 100 km?
Warp | 5x, 10x | 50x | 100x | 1000x | 10,000x | 100,000x |
Minimum altitude | 5 km | 10 km | 25 km | 50 km | 100 km | 200 km |
Gallery
Changes
- Initial Release