Difference between revisions of "Pol"
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Revision as of 17:48, 21 March 2024
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| Pol | ||
 | ||
| Pol as seen from orbit. | ||
| Moon of Jool | ||
| Orbital Characteristics | ||
| Semi-major axis | 179 890 000 m [Note 1] | |
| Apoapsis | 210 624 207 m [Note 1] | |
| Periapsis | 149 155 794 m [Note 1] | |
| Orbital eccentricity | 0.171 | |
| Orbital inclination | 4.25 ° | |
| Argument of periapsis | 15 ° | |
| Longitude of the ascending node | 2 ° | |
| Mean anomaly | 0.9 rad (at 0s UT) | |
| Sidereal orbital period | 901 903 s | |
| 41 d 4 h 31 m 42.6 s | ||
| Synodic orbital period | 909 742.2 s | |
| Orbital velocity | 1 055 - 1 489 m/s | |
| Longest time eclipsed | 11 381 s | |
| Physical Characteristics | ||
| Equatorial radius | 44 000 m | |
| Equatorial circumference | 276 460 m | |
| Surface area | 2.4328494×1010 m2 | |
| Mass | 1.0813507×1019 kg | |
| Standard gravitational parameter | 7.2170208×108 m3/s2 | |
| Density | 30 305.392 kg/m3 | |
| Surface gravity | 0.373 m/s2 (0.038 g) | |
| Escape velocity | 181.12 m/s | |
| Sidereal rotation period | 901 902.62 s | |
| 41 d 4 h 31 m 42.6 s | ||
| Sidereal rotational velocity | 0.30653 m/s | |
| Synchronous orbit | Outside sphere of influence | |
| Sphere of influence | 1 042 138.9 m [Note 1] | |
| Atmospheric Characteristics | ||
| Atmosphere present | No | |
| Scientific multiplier | ||
| Surface | 12 | |
| Splashed | N/A | |
| Near space | 9 | |
| Outer space | 8 | |
| Recovery | 8 | |
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Pol is the smallest of the five natural satellites of Jool. The terrain is proportionally quite rough, with large ridges that make it resemble a pollen grain.
Pol has the second-lowest surface gravity in the Kerbol system: only Eve's moon Gilly is less massive. This makes bipropellant engines on a lander somewhat unnecessary, as landing can be completed with RCS thrusters only. Landing on Pol may still be difficult for inexperienced pilots due to the hazardous terrain with mountains, canyons, 45° slopes and jagged rocks, as well as its tiny sphere of influence. Pol is in a high orbit around Jool with moderate eccentricity and inclination, which indicates it may be a captured asteroid like Gilly and Bop. Pol is tidally locked to Jool. Its high orbit and low gravity makes it a convenient moon for mining ore to supply a refinery/refueling depot in a higher Jool orbit.[1]
Pol was added in 0.18. It was not part of the original Joolian system when it was released, along with all the other planets, except the Kerbin system, in 0.17.
Contents
In-game Description
KSP 1:
| “ | This moon was especially hard to spot, as it looks just like a pollen grain, particularly when observed through telescopes based near dusty fields.
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” |
KSP 2:
| “ | Jool's smallest moon is bursting with geothermal activity. Sulfuric compounds spew from volcanoes while deposits of sulfur dioxide ices create small spires along the surface. Pol's bright yellow appearance and low gravity, as well as the spikes, give it a "don't come near me" vibe. We're also getting radiation readings from it, so maybe Pol really doesn't want us around! | ” |
Topography
Pol has many unique characteristics. The surface is wrinkled and uneven. It has many spiked mountains and very large cliffs that can reach up to 4 km high, and many kilometers wide. Many mountain ranges are circular and form bowl-shaped valleys. Its surface color ranges from brown over pale yellow to pale green. It appears to be composed of various phosphoric or sulfuric compounds and is covered in peculiar spire-shaped rocks. The terrain scatter resembles spiky, twisted rocks and the surface is very difficult to navigate with a rover due to the terrain and low gravity.
Although very uneven, the surface of Pol is still not as irregular as that of Bop, despite its lower gravity. This suggests volcanic activity that re-paved the surface, or that Pol was formed via low-velocity accretion at relatively low temperatures.
Biomes
Pol has 4 biomes.
Biome list
|
KSP2
Surface Research Locations
Surface research locations include:
- Highlands
- Lowlands
- Mountains
- PolMidlands
- Volcanoes
Maps
Biomes
Visual map
Reference Frames
| Time warp | Minimum Altitude |
|---|---|
| 1× | Any |
| 5× | 5 000 m |
| 10× | 5 000 m |
| 50× | 5 000 m |
| 100× | 8 000 m |
| 1 000× | 12 000 m |
| 10 000× | 30 000 m |
| 100 000× | 90 000 m |
An orbit under 3000 meters is unwise, as it will almost always result in colliding with a mountain, spire, or plateau.
Trivia
- According to its ingame description it was a long time before Pol was officially discovered, as astronomers kept trying to wipe it off their telescopes, thinking that it was a grain of pollen. Pol's name may refer to this uncanny resemblance, even though the kerbal word for pollen would actually be "Nelop".
Gallery
A successful landing of a user created RCS Lander on Pol.
A map view of Pol contrasted to Jool.
A motion image of a Kerbal astronaut enjoying Pol's outrageously low gravity.
A topographic height map of Pol as of Version 0.18.1 made with the ISA MapSat plugin.
A successful landing on Pol.
A probe lander looking into a dark, sinister looking mountain spire.
Spiky rocks on Pol's surface.
Jebediah Kerman floating in front of a large spacecraft while orbiting Pol. In the background you can see Jool.
Two Kerbals and a lander on Pol.
A crashed rover on Pol with Jool in the background
A probe in orbit of Pol after flying past the other moons of Jool. The high texture quality added in 1.12 can be seen.
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Changes
- Texture revamp
- Added biomes
- Mass increased by ~3.16x, semi-major axis increased.
- Initial Release
