Difference between revisions of "Gilly"
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| − | [[ | + | '''Gilly''' is a tiny asteroid, the only [[w:natural satellite|natural satellite]] of [[Eve]], and the smallest celestial body in the [[Kerbol]] system. |
| − | + | == In-game Description == | |
| − | + | '''KSP 1:''' | |
| + | {{Quote | ||
| + | |Gilly is a lumpy rock wandering around the orbit of Eve. It’s by far the smallest natural satellite that the Kerbal Astronomical Society has discovered.<br /> | ||
| + | <br /> | ||
| + | ''Due to the large amount of squinting and eye strain associated with its discovery, wearing glasses has now become synonymous with being an accomplished Astronomer.'' | ||
| + | |[[Kerbal Astronomical Society]]}} | ||
| − | + | '''KSP 2:''' | |
| + | {{Quote | ||
| + | |Gilly is the smallest celestial body in the Kerbollar system. In fact, it took years to officially discover because researches mistook it for a crumb on their telescope lenses. Its gentle gravitational pull and lack of atmosphere often leads to objects bouncing off its surface and back into orbit around Eve. Please be cautious when taking brisk walks.|}} | ||
| − | + | == Topography == | |
| + | [[File:Gilly ISA Topo.png|thumb|left|A topographic map of Gilly.]]The surface of Gilly is extremely dynamic and uneven, with many steep slopes and smooth areas. This moon is considered a [[captured asteroid]]. Gilly has the lowest mass and gravitational force of any body in the [[Kerbol]] system. Due to its minuscule mass and resultant low gravitational force, it does not have an atmosphere. | ||
| − | + | Gilly's color might come from a high content of solid carbon. When terrain scatters are enabled in the settings menu, small rocks will show up on the surface. | |
| − | + | == Biomes == | |
| + | With only 3 [[biome]]s, Gilly has the fewest number of biomes in the [[Kerbol System]]. | ||
| − | + | === Biome list === | |
| + | {| | ||
| + | | style="vertical-align:middle; text-align:center;" | | ||
| + | [[File:GillyBiomeMap.png|thumb|687px|left|Gilly's biomes as of 1.12 (made with Scansat, hand-colored)]] | ||
| + | |} | ||
| − | + | == KSP2 == | |
| + | === Surface Research Locations === | ||
| − | + | Surface research locations include: | |
| − | * | + | * Lowlands |
| + | * Highlands | ||
| + | * Midlands | ||
| + | * Oblique Impact Site | ||
| + | * Silicate Fields | ||
| − | + | === Maps === | |
| + | ==== Biomes ==== | ||
| + | [[File:gilly_region_ui.jpg|thumb|none|Gilly biome map with legend (as of v0.2.1.0 (from Orbital Survay mod))]] | ||
| + | [https://i.imgur.com/Nydo6T0.jpeg Gilly biome map (Imgur)] | ||
| − | + | Gilly currently has 5 [[biome]]s | |
| + | * Highlands | ||
| + | * Lowlands | ||
| + | * Midlands | ||
| + | * Oblique Impact Site | ||
| + | * Silicate Fields | ||
| − | + | ==== Visual map ==== | |
| + | [[File:gilly_visual.png|thumb|none|Gilly visual map (as of v0.2.1.0)]] | ||
| + | [https://i.imgur.com/ZLauk18.png Gilly visual map (Imgur)] | ||
| − | == | + | == Gravity == |
| + | Gilly has the lowest gravity of all bodies in the [[Kerbol]] system at only 0.5% of [[Kerbin]]'s surface gravity, which is half that of Jool's moon [[Pol]]. It is very impractical to walk on Gilly; each step will launch a Kerbal several meters into the air. A Kerbal can jump over 200 meters on this moon and will usually take more than 4 minutes to return to the surface. This makes jetpacks a necessity to move around the moon practically. | ||
| − | + | The very low gravity also makes it very difficult to get into an encounter since it makes the sphere of influence so minuscule. An unplanned encounter with Gilly is unlikely when approaching Eve, even if the craft's trajectory is near the plane of Gilly's orbit. Because of this, it is easier to encounter Gilly by approaching it in a rendezvous fashion rather than attempting to intercept it with a single injection maneuver, like one would use to get from LKO to the Mun. | |
| − | + | Gilly's mass is very small relative to Eve's mass, resulting in a very small sphere of influence compared to the semi-major axis of its orbit. In fact, no other moon in the game has a smaller mass ratio. | |
| − | + | Gilly's gravity makes it ideal for very low fuel interplanetary missions; however, its eccentric and inclined orbit may make encounters more difficult and fuel-costly. Landing, however, is extremely fuel-friendly: it is trivial to land on Gilly and return to orbit spending much less than 100 m/s of delta-v, though fine throttle controls are a necessity during the landing phase to avoid reversing your descent. | |
| − | + | The low gravity of this moon makes it an ideal location for mining ore. Even an extremely overloaded lander with a minuscule TWR will be able to return to orbit from the surface. A tanker could use a gravity assist off of Eve to slingshot into an encounter with Kerbin or Duna (made easier by the rapidity with which the transfer windows repeat, due to Eve's fast orbit), and either return the ore to Kerbin's surface for credits, or refuel another ship/refueling station in orbit. | |
| − | + | == Landing == | |
| + | Landing on Gilly is challenging due to its very low mass, steep slopes, and highly eccentric orbit, making it very easy to overthrust engines or send a spacecraft tumbling. Gilly's odd shape and fast rotation give the surface near the peaks an apparent velocity near 5 m/s. Some players advise to keep the prograde on the [[navball]] tilted a little bit sideways to counter the [[w:Coriolis effect|Coriolis effect]] if you are landing close to the equator. To prevent tumbling upon landing, the final velocity trim may need to be performed by eye. It is advised to be adept in manually using RCS thrusters and to have SAS active on the lander. If your lander tips over, you can use reaction wheels to put it back upright due to Gilly's very, very low gravity. Time Warp can also be used to stabilize a lander, as vessels tip over so slowly on Gilly the game considers them stable enough to allow time warp. | ||
| − | + | Gilly was once even more dangerous to land on due to a clipping bug with the [[w:polygon mesh|collision mesh]]. This problem was fixed in {{version|0.17.1}}. | |
| − | + | Escaping Gilly is much easier — the [[EVA]] jetpack can easily put a lone Kerbal into orbit or set them on an escape trajectory. In fact, it's possible to deploy a Kerbal from a spacecraft in orbit around Gilly, send them down to the surface, and land them without using any other fuel source. The Kerbal can even return to orbit, rendezvous with the spacecraft, and still have up to 3.5 units of EVA fuel left. | |
| − | + | == Reference Frames == | |
| + | {{:Gilly/RefFrame}} | ||
| − | + | == Gallery == | |
| + | <gallery> | ||
| + | GillyLanding.png | An unsuccessful touchdown attempt in 0.17. Notice the landing legs clipping through the terrain. | ||
| + | Gilly ISA Topo.png | Topographical image of Gilly. | ||
| + | Kerbal on Gilly's surface.png | A successful [[EVA]] landing. | ||
| + | Gilly_map_800.gif | A topographic height map of Gilly as of Version 0.18.2. Made with the ISA MapSat plugin. | ||
| + | Gilly_Probe.png | A successful probe landing. Small rocks are visible on the surface in the background. | ||
| + | Landed on gilly.png| A successful scientific, electrically powered probe landed on Gilly. The probe's small mass combined with Gilly's low gravity makes ion engines suitable for landing, as shown here. | ||
| + | gillygilly.png|Kerbals celebrate their first manned voyage to Gilly. (They celebrated even more when they got home.) | ||
| + | File:Contract Obligation Outpost.jpeg|thumb|A space station in orbit of Gilly, where Eve can be seen in the background.(The Eve texture is provided by scatterer, and is not stock/default, but the high-resolution Gilly surface textures are.) | ||
| + | </gallery> | ||
| − | + | == Trivia == | |
| − | + | -Though Venus in real life dosn't have any moons, Gilly is very similar in mass and size to [[w:Phobos (moon)|Phobos]] | |
| − | |||
| − | |||
| − | [ | ||
== Changes == | == Changes == | ||
| − | ; | + | ;[[0.90]] |
| + | * Added biomes | ||
| + | ;[[0.17.1]] | ||
| + | * Fixed terrain collision detection issues. | ||
| + | ;[[0.17]] | ||
* Initial Release | * Initial Release | ||
Latest revision as of 22:18, 10 May 2024
| Gilly | ||
 | ||
| Gilly as seen from orbit. | ||
| Moon of Eve | ||
| Orbital Characteristics | ||
| Semi-major axis | 31 500 000 m [Note 1] | |
| Apoapsis | 48 825 000 m [Note 1] | |
| Periapsis | 14 175 000 m [Note 1] | |
| Orbital eccentricity | 0.55 | |
| Orbital inclination | 12 ° | |
| Argument of periapsis | 10 ° | |
| Longitude of the ascending node | 80 ° | |
| Mean anomaly | 0.9 rad (at 0s UT) | |
| Sidereal orbital period | 388 587 s | |
| 17 d 5 h 56 m 27.4 s | ||
| Synodic orbital period | 417 243.4 s | |
| Orbital velocity | 274 - 945 m/s | |
| Longest time eclipsed | 5 102 s | |
| Physical Characteristics | ||
| Equatorial radius | 13 000 m | |
| Equatorial circumference | 81 681 m | |
| Surface area | 2.1237166×109 m2 | |
| Mass | 1.2420363×1017 kg | |
| Standard gravitational parameter | 8 289 449.8 m3/s2 | |
| Density | 13 496.328 kg/m3 | |
| Surface gravity | 0.049 m/s2 (0.005 g) | |
| Escape velocity | 35.71 m/s | |
| Sidereal rotation period | 28 255.000 s | |
| 1 d 1 h 50 m 55 s | ||
| Sidereal rotational velocity | 2.8909 m/s | |
| Synchronous orbit | 42.14 km | |
| Sphere of influence | 126 123.27 m [Note 1] | |
| Atmospheric Characteristics | ||
| Atmosphere present | No | |
| Scientific multiplier | ||
| Surface | 9 | |
| Splashed | N/A | |
| Near space | 8 | |
| Outer space | 6 | |
| Recovery | 6 | |
|
| ||
Gilly is a tiny asteroid, the only natural satellite of Eve, and the smallest celestial body in the Kerbol system.
Contents
In-game Description
KSP 1:
| “ | Gilly is a lumpy rock wandering around the orbit of Eve. It’s by far the smallest natural satellite that the Kerbal Astronomical Society has discovered.
|
” |
KSP 2:
| “ | Gilly is the smallest celestial body in the Kerbollar system. In fact, it took years to officially discover because researches mistook it for a crumb on their telescope lenses. Its gentle gravitational pull and lack of atmosphere often leads to objects bouncing off its surface and back into orbit around Eve. Please be cautious when taking brisk walks. | ” |
Topography
The surface of Gilly is extremely dynamic and uneven, with many steep slopes and smooth areas. This moon is considered a captured asteroid. Gilly has the lowest mass and gravitational force of any body in the Kerbol system. Due to its minuscule mass and resultant low gravitational force, it does not have an atmosphere.
Gilly's color might come from a high content of solid carbon. When terrain scatters are enabled in the settings menu, small rocks will show up on the surface.
Biomes
With only 3 biomes, Gilly has the fewest number of biomes in the Kerbol System.
Biome list
KSP2
Surface Research Locations
Surface research locations include:
- Lowlands
- Highlands
- Midlands
- Oblique Impact Site
- Silicate Fields
Maps
Biomes
Gilly currently has 5 biomes
- Highlands
- Lowlands
- Midlands
- Oblique Impact Site
- Silicate Fields
Visual map
Gravity
Gilly has the lowest gravity of all bodies in the Kerbol system at only 0.5% of Kerbin's surface gravity, which is half that of Jool's moon Pol. It is very impractical to walk on Gilly; each step will launch a Kerbal several meters into the air. A Kerbal can jump over 200 meters on this moon and will usually take more than 4 minutes to return to the surface. This makes jetpacks a necessity to move around the moon practically.
The very low gravity also makes it very difficult to get into an encounter since it makes the sphere of influence so minuscule. An unplanned encounter with Gilly is unlikely when approaching Eve, even if the craft's trajectory is near the plane of Gilly's orbit. Because of this, it is easier to encounter Gilly by approaching it in a rendezvous fashion rather than attempting to intercept it with a single injection maneuver, like one would use to get from LKO to the Mun.
Gilly's mass is very small relative to Eve's mass, resulting in a very small sphere of influence compared to the semi-major axis of its orbit. In fact, no other moon in the game has a smaller mass ratio.
Gilly's gravity makes it ideal for very low fuel interplanetary missions; however, its eccentric and inclined orbit may make encounters more difficult and fuel-costly. Landing, however, is extremely fuel-friendly: it is trivial to land on Gilly and return to orbit spending much less than 100 m/s of delta-v, though fine throttle controls are a necessity during the landing phase to avoid reversing your descent.
The low gravity of this moon makes it an ideal location for mining ore. Even an extremely overloaded lander with a minuscule TWR will be able to return to orbit from the surface. A tanker could use a gravity assist off of Eve to slingshot into an encounter with Kerbin or Duna (made easier by the rapidity with which the transfer windows repeat, due to Eve's fast orbit), and either return the ore to Kerbin's surface for credits, or refuel another ship/refueling station in orbit.
Landing
Landing on Gilly is challenging due to its very low mass, steep slopes, and highly eccentric orbit, making it very easy to overthrust engines or send a spacecraft tumbling. Gilly's odd shape and fast rotation give the surface near the peaks an apparent velocity near 5 m/s. Some players advise to keep the prograde on the navball tilted a little bit sideways to counter the Coriolis effect if you are landing close to the equator. To prevent tumbling upon landing, the final velocity trim may need to be performed by eye. It is advised to be adept in manually using RCS thrusters and to have SAS active on the lander. If your lander tips over, you can use reaction wheels to put it back upright due to Gilly's very, very low gravity. Time Warp can also be used to stabilize a lander, as vessels tip over so slowly on Gilly the game considers them stable enough to allow time warp.
Gilly was once even more dangerous to land on due to a clipping bug with the collision mesh. This problem was fixed in version 0.17.1.
Escaping Gilly is much easier — the EVA jetpack can easily put a lone Kerbal into orbit or set them on an escape trajectory. In fact, it's possible to deploy a Kerbal from a spacecraft in orbit around Gilly, send them down to the surface, and land them without using any other fuel source. The Kerbal can even return to orbit, rendezvous with the spacecraft, and still have up to 3.5 units of EVA fuel left.
Reference Frames
| Time warp | Minimum Altitude |
|---|---|
| 1× | Any |
| 5× | 8 000 m |
| 10× | 8 000 m |
| 50× | 8 000 m |
| 100× | 20 000 m |
| 1 000× | 40 000 m |
| 10 000× | 80 000 m |
| 100 000× | 100 000 m |
Gallery
An unsuccessful touchdown attempt in 0.17. Notice the landing legs clipping through the terrain.
Topographical image of Gilly.
A successful EVA landing.
A topographic height map of Gilly as of Version 0.18.2. Made with the ISA MapSat plugin.
A successful probe landing. Small rocks are visible on the surface in the background.
A successful scientific, electrically powered probe landed on Gilly. The probe's small mass combined with Gilly's low gravity makes ion engines suitable for landing, as shown here.
Kerbals celebrate their first manned voyage to Gilly. (They celebrated even more when they got home.)
A space station in orbit of Gilly, where Eve can be seen in the background.(The Eve texture is provided by scatterer, and is not stock/default, but the high-resolution Gilly surface textures are.)
Trivia
-Though Venus in real life dosn't have any moons, Gilly is very similar in mass and size to Phobos
Changes
- Added biomes
- Fixed terrain collision detection issues.
- Initial Release
