Difference between revisions of "Moho"

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'''Moho''' is the innermost planet of the [[Kerbol]] star system and the [[w:Mercury (planet)|Mercury]] analogue for Kerbal Space Program. It lacks an [[atmosphere]] and natural satellites.
 
'''Moho''' is the innermost planet of the [[Kerbol]] star system and the [[w:Mercury (planet)|Mercury]] analogue for Kerbal Space Program. It lacks an [[atmosphere]] and natural satellites.
  
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Moho's inclined and eccentric [[orbit]], lack of atmosphere (for [[aerobraking]]) and moons (for [[Tutorial: Gravity Assist|gravity assist]]s) impede [[encounter]]ing and orbital capture.
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Moho's inclined and eccentric [[orbit]], lack of atmosphere, (for [[aerobraking]]) or moons (for [[Tutorial: Gravity Assist|gravity assist]]s) make [[Encounter|encountering]] the planet a very difficult endeavor.  
  
 
== In-game Description ==
 
== In-game Description ==
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== Naming ==
 
== Naming ==
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Moho is also the name for the outermost layer of molten rock that makes up the mantle (that layer was the target of [[w:Project Mohole|Project Mohole]]). It may have been named by [[Kerbal]] astronomers who, according to its in-game description, believed it to be flowing with rivers and oceans of lava.
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Moho gets its name from the [https://en.wikipedia.org/wiki/Mohorovi%C4%8Di%C4%87_discontinuity Mohorovičić discontinuity]; the boundary between the Earth's crust and mantle.
  
 
== Topography ==
 
== Topography ==
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Moho's surface ranges from light brown highlands to dark brown maria or basins, probably the product of volcanism. Its highest point is in its northern hemisphere at an altitude of 6817 m.  Moho's heavy cratering, though less than that of the moons of [[Kerbin]] and [[Jool]], suggests erosion.  Tidal friction with Kerbol most likely causes airless Moho's erosion by inducing volcanic periods that fill craters(citation needed). The volcanism (i.e., superheated atmosphere) of Moho being removed in 0.18 could be argued to prove that Moho's volcanism is periodic, assuming that volcanic events occur on a cyclical geological timescale and that the change in 0.18 represented the end of a cycle.
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Moho's surface ranges from light brown highlands to dark brown basins, possibly the product of [https://en.wikipedia.org/wiki/Volcanism volcanism]. Its highest point is in its northern hemisphere at an altitude of 6817 m.  Moho's heavy cratering suggests erosion.  Tidal friction with Kerbol most likely causes airless Moho's erosion by inducing volcanic periods that fill craters.
  
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Moho has a very deep well at its geographic north pole. Contrary to popular belief, there is no southern Mohole, even though it looks like there is one from the orbital map view. Current analysis and probe exploration have revealed the crater to be more than five kilometers deep; however, the probe crashed into the ever narrowing canyon walls before reaching the very bottom. A set of three probes was then sent to properly determine the depth to within 100 meters. The final analysis found the depth of the well to be around 4.6&nbsp;km deep after the final probe reached the very bottom intact.<ref>“[[thread:48006|Moho's Secrets Revealed]]” in the forums measuring the depth of the pit.</ref> These wells may be dormant volcanic tubes. Further analysis of the canyon walls is needed for a final answer. <!--most likely explanation: it's just a glitch in the procedural terrain generation algorithm --> This hole, often called the Mohole, may be a reference to [[w:Project Mohole|Project Mohole]] or the deep well named the "Mohole" in the game [[w:Red Faction: Guerrilla|Red Faction: Guerrilla]].
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Moho has a very deep well at its geographic north pole, called the [[Mohole]] by fans in reference to [https://en.wikipedia.org/wiki/Project_Mohole Project Mohole], and the Northern Sinkhole by [[Science|scientific instruments]]. Despite, according to the [[Map View]], the apparent existence of another hole at the geographic south pole, one does not exist. The Mohole is about 4.6 kilometers deep.<ref>“[[thread:48006|Moho's Secrets Revealed]]” </ref> The hole is a glitch in the procedural generation of terrain; many other bodies with land at the north pole have similar bugs.<ref>https://www.youtube.com/watch?v=-e5SGynBJ4Y</ref>
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The Mohole can destroy craft and Kerbals that fall into it.
  
 
== Biomes ==
 
== Biomes ==
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Moho has 12 [[biome]]s. It is one of two bodies (the other being [[Ike]]) that have their own North and South Pole biome. On the North Pole there is a big sinkhole called the Northern Sinkhole.
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Moho has 12 [[biome]]s. It is one of two bodies (the other being [[Ike]]) that have their own North and South Pole biome.
  
 
=== Biome list ===
 
=== Biome list ===
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== Solar System Counterpart ==
 
== Solar System Counterpart ==
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It appears that Moho is the [[Kerbol System]] analog of the planet Mercury. Both share a similar cratered landscape, like most bodies with little to no atmosphere. Both planets are also the closest ones to their respective stars and are lacking of natural satellites. On the other hand Moho has a brown texture, but Mercury is grey to dark grey. In addition, Mercury has at least a very tenuous atmosphere of about 10⁻¹³ kPa while Moho has no atmosphere, although a pressure of only 10⁻¹³ kPa (≃ 10⁻¹⁵ atm) would be unmeasurable by the [[PresMat Barometer]] and consequently register in KSP as a vacuum.
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Moho is the apparent [[Kerbol System]] analog of the planet Mercury. Both share a similar cratered landscape, like most bodies with little to no atmosphere. Due to the lack of an atmosphere to retain heat, Moho and Mercury are freezing on the night side and, relative to Earth, extremely hot on the day side. Both planets are the closest to their respective stars and lack natural satellites.  
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However, Moho has a brown surface, while Mercury has a dark grey surface. In addition, Mercury has a tenuous atmosphere of about 10⁻¹³ kPa while Moho has no atmosphere; although, a pressure of 10⁻¹³ kPa (≃ 10⁻¹⁵ atm) would be rendered "unmeasurable" by the [[PresMat Barometer]] and register in KSP as a vacuum.  
  
 
== Gallery ==
 
== Gallery ==
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HannyNMohole.png | Hanny Kerman wedged in the Northern [[Mohole]] sideways. Lots of orientation jittering was observed.
 
HannyNMohole.png | Hanny Kerman wedged in the Northern [[Mohole]] sideways. Lots of orientation jittering was observed.
 
</gallery>
 
</gallery>
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== Triva ==
 
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Sometimes, a Kerbal can be killed by a "Mohole", a terrain glitch.
 
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Moho, like Mercury, is boiling on the side facing Kerbol, while freezing on the side facing away from Kerbol.
 
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== Changes ==
 
== Changes ==

Revision as of 16:24, 4 December 2015

Moho
Moho
Moho as seen from orbit.
Planet of Kerbol
Orbital Characteristics
Semi-major axis 5 263 138 304 m [Note 1]
Apoapsis 6 315 765 981 m [Note 1]
Periapsis 4 210 510 628 m [Note 1]
Orbital eccentricity 0.2
Orbital inclination 7 °
Argument of periapsis 15 °
Longitude of the ascending node 70 °
Mean anomaly 3.14 rad (at 0s UT)
Sidereal orbital period 2 215 754 s
102 d 3 h 29 m 14.2 s
Synodic orbital period 2 918 346.4 s
Orbital velocity 12 186 - 18 279 m/s
Physical Characteristics
Equatorial radius 250 000 m
Equatorial circumference 1 570 796 m
Surface area 7.8539816×1011 m2
Mass 2.5263314×1021 kg
Standard gravitational parameter 1.6860938×1011 m3/s2
Density 38 599.500 kg/m3
Surface gravity 2.70 m/s2 (0.275 g)
Escape velocity 1 161.41 m/s
Sidereal rotation period 1 210 000.0 s
56 d 0 h 6 m 40 s
Solar day 2 665 723.4 s
123 d 2 h 28 m 43.4 s
Sidereal rotational velocity 1.2982 m/s
Synchronous orbit Outside sphere of influence
Sphere of influence 9 646 663.0 m [Note 1]
Atmospheric Characteristics
Atmosphere present No
Scientific multiplier
Surface 10
Splashed N/A
Near space 8
Outer space 7
Recovery 7
  1. ↑ 1.0 1.1 1.2 1.3 The distances are given from the body's center, not from the surface (unlike ingame)

Moho is the innermost planet of the Kerbol star system and the Mercury analogue for Kerbal Space Program. It lacks an atmosphere and natural satellites.

Moho's inclined and eccentric orbit, lack of atmosphere, (for aerobraking) or moons (for gravity assists) make encountering the planet a very difficult endeavor.

In-game Description

“ Moho figures in Kerbal mythology as a fiery place with oceans of flowing lava. In reality, however, it's much less interesting.

Scientists speculate about possible ways to make it awesome like in the stories. Some of those ideas have led to new breakthroughs in aerospace technology.

— Kerbal Astronomical Society

 ”

Naming

Moho gets its name from the Mohorovičić discontinuity; the boundary between the Earth's crust and mantle.

Topography

Moho's surface ranges from light brown highlands to dark brown basins, possibly the product of volcanism. Its highest point is in its northern hemisphere at an altitude of 6817 m. Moho's heavy cratering suggests erosion. Tidal friction with Kerbol most likely causes airless Moho's erosion by inducing volcanic periods that fill craters.

Moho has a very deep well at its geographic north pole, called the Mohole by fans in reference to Project Mohole, and the Northern Sinkhole by scientific instruments. Despite, according to the Map View, the apparent existence of another hole at the geographic south pole, one does not exist. The Mohole is about 4.6 kilometers deep.[1] The hole is a glitch in the procedural generation of terrain; many other bodies with land at the north pole have similar bugs.[2]

The Mohole can destroy craft and Kerbals that fall into it.

Biomes

Moho has 12 biomes. It is one of two bodies (the other being Ike) that have their own North and South Pole biome.

Biome list

Moho In-game biome map as of 1.2
  • North Pole
  • Northern Sinkhole Ridge
  • Northern Sinkhole
  • Highlands
  • Midlands
  • Minor Craters
  • Central Lowlands
  • Western Lowlands
  • South Western Lowlands
  • South Eastern Lowlands
  • Canyon
  • South Pole

Orbital Statistics

Mohosynchronous and semi-synchronous orbits are impossible — they would require altitudes of 18 182.08 km and 11 361.48 km respectively, both of which are beyond Moho's sphere of influence.

Reference Frames

Time warp Minimum Altitude
1× Any
5× 10 000 m
10× 10 000 m
50× 30 000 m
100× 50 000 m
1 000× 100 000 m
10 000× 200 000 m
100 000× 300 000 m

Solar System Counterpart

Moho is the apparent Kerbol System analog of the planet Mercury. Both share a similar cratered landscape, like most bodies with little to no atmosphere. Due to the lack of an atmosphere to retain heat, Moho and Mercury are freezing on the night side and, relative to Earth, extremely hot on the day side. Both planets are the closest to their respective stars and lack natural satellites.

However, Moho has a brown surface, while Mercury has a dark grey surface. In addition, Mercury has a tenuous atmosphere of about 10⁻¹³ kPa while Moho has no atmosphere; although, a pressure of 10⁻¹³ kPa (≃ 10⁻¹⁵ atm) would be rendered "unmeasurable" by the PresMat Barometer and register in KSP as a vacuum.

Gallery

  • A topographic height map of Moho as at Version 0.18.2 made with the ISA MapSat plugin.

  • A successful landing at Moho pre-0.18. Note the engines still overheating.

  • A successful landing in 0.23.5, after Moho's color was changed and its superheated atmosphere was removed. The walls of the basins are quite steep.

  • A probe wedged in the 5 km deep lava well at the north pole.

  • A probe performing a Moho flyby.

  • Bill Kerman having the time of his life wedged in the Northern Mohole.

  • Hanny Kerman wedged in the Northern Mohole sideways. Lots of orientation jittering was observed.

Changes

0.90
  • Added biomes
0.21
  • New, procedurally generated, textures added, with higher detail craters.
0.18
  • Entirely changed more cratered surface.
  • Color changed from red to brown.
  • No more superheated atmosphere.
  • No longer tidally locked.
  • Mass reduced.
0.17
  • Initial Release

Notes

  1. ↑ “Moho's Secrets Revealed”
  2. ↑ https://www.youtube.com/watch?v=-e5SGynBJ4Y
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