Is this alternate solar system possible?

[fredinno]

20 minutes ago, ChrisSpace said:

 

 

I was thinking Aurora only recently came into the Earth-Luna system within the last few thousand years. So it doesn't need to be perfectly stable, just stable for long enough for everything in the timeline to take place. If it originally formed further out that could also explain its high ice content.

Usually, such temporary moons only last on the order of months- though one has been detected to orbit for 5 years (though very small) before reentering the atmosphere.

Gravitational interactions would be even greater in a binary system, and would make other moons even more unstable.

So no- very unlikely one would last for thousands of years, and be relatively big.

[ChrisSpace]

Usually, such temporary moons only last on the order of months- though one has been detected to orbit for 5 years (though very small) before reentering the atmosphere.

Gravitational interactions would be even greater in a binary system, and would make other moons even more unstable.

So no- very unlikely one would last for thousands of years, and be relatively big.

-__-

Well, looks like I have only one solution: Try everything. L-points, Cycler orbits, surely there's something that can put Aurora in the Earth-Luna system? If not, I have a backup plan for the system, but merely saying what it is is a last resort.

[silversliver]

17 hours ago, fredinno said:

Usually, such temporary moons only last on the order of months- though one has been detected to orbit for 5 years (though very small) before reentering the atmosphere.

Gravitational interactions would be even greater in a binary system, and would make other moons even more unstable.

So no- very unlikely one would last for thousands of years, and be relatively big.

Why not? I remember seeing an N-body simulation of the various systems of moons of ksp solar system and apart from Jool they all seem quite stable. We are analysing a system very similar to kerbin-mun-minmus so this should be stable too.

Also I made a climate simulation of Vulcan using universe sandbox.

http://it.tinypic.com/a/5f26ol/3

You can notice:

1. The surface isn't melted by sun heat, you absolutely need geothermal activity to explain a (almost) completely melted surface.
2. The tail is the opposite of what I thought, is in minimal part gas of the atmosphere and the major part is dust from the surface that is literally vaporized.
3. For this sim I used Venus with a thicker atmosphere because the composition of that seems very close to Venus OTL, and I used Mercury with an added atmosphere to simulate the surface. As you can see the results are almost the same.

Also the temperature you found is consistent with the temperature I simulated in this cases, but as I said before you haven't took in account the lava on the surface.

 

Edited December 12, 2015 by silversliver

[fredinno]

 

5 hours ago, ChrisSpace said:

 

 

-__-

Well, looks like I have only one solution: Try everything. L-points, Cycler orbits, surely there's something that can put Aurora in the Earth-Luna system? If not, I have a backup plan for the system, but merely saying what it is is a last resort.

L-point should be fine... Wait, now I need to edit my SolarsystemAlt.txt file... It'll take a while, but the inner planets are, otherwise, completed.

[ChrisSpace]

Also I made a climate simulation of Vulcan using universe sandbox.

http://it.tinypic.com/a/5f26ol/3

You can notice:

1. The surface isn't melted by sun heat, you absolutely need geothermal activity to explain a (almost) completely melted surface.
2. The tail is the opposite of what I thought, is in minimal part gas of the atmosphere and the major part is dust from the surface that is literally vaporized.
3. For this sim I used Venus with a thicker atmosphere because the composition of that seems very close to Venus OTL, and I used Mercury with an added atmosphere to simulate the surface. As you can see the results are almost the same.

Also the temperature you found is consistent with the temperature I simulated in this cases, but as I said before you haven't took in account the lava on the surface.

I suppose I'll need to edit Vulcan's description.

L-point should be fine... Wait, now I need to edit my SolarsystemAlt.txt file... It'll take a while, but the inner planets are, otherwise, completed.

But... but... I have only completed the planets out to the E-L-A system!

[Findthepin1]

On December 11, 2015 at 11:43:35 PM, fredinno said:

Usually, such temporary moons only last on the order of months- though one has been detected to orbit for 5 years (though very small) before reentering the atmosphere.

Gravitational interactions would be even greater in a binary system, and would make other moons even more unstable.

So no- very unlikely one would last for thousands of years, and be relatively big.

See Triton.

Edited December 13, 2015 by Findthepin1

[YNM]

6 hours ago, Findthepin1 said:

On 12/12/2015, 11:43:35, fredinno said:

Usually, such temporary moons only last on the order of months- though one has been detected to orbit for 5 years (though very small) before reentering the atmosphere.

Gravitational interactions would be even greater in a binary system, and would make other moons even more unstable.

So no- very unlikely one would last for thousands of years, and be relatively big.

See Triton.

... Except that Neptune is at least 19 AU (19 times Sun-Earth distance !!! Compare that to Venus-Earth at ~0.3 AU and Earth-Mars at ~0.6 AU) away at any point from it's closest neighbor with similar mass... Holding such moon in a swarm of similar parent-body-sized planets and under influence of a far larger gas giant isn't as sound as holding a tiny moon when you're the king of the hill. (and then it's retrograde - I don't know how it influence Triton's stability but getting something to go retrograde around Earth is hard I guess ?)

--------

Anyway, got an idea : what if the four habitable planets is in resonance to each other ? Say, Laplace resonance of some sort ? Plutinos resonance ? Any other ? I mean, it can be beneficial for their stability...

Edited December 13, 2015 by YNM

[fredinno]

3 hours ago, YNM said:

... Except that Neptune is at least 19 AU (19 times Sun-Earth distance !!! Compare that to Venus-Earth at ~0.3 AU and Earth-Mars at ~0.6 AU) away at any point from it's closest neighbor with similar mass... Holding such moon in a swarm of similar parent-body-sized planets and under influence of a far larger gas giant isn't as sound as holding a tiny moon when you're the king of the hill. (and then it's retrograde - I don't know how it influence Triton's stability but getting something to go retrograde around Earth is hard I guess ?)

--------

Anyway, got an idea : what if the four habitable planets is in resonance to each other ? Say, Laplace resonance of some sort ? Plutinos resonance ? Any other ? I mean, it can be beneficial for their stability...

Maybe, I have Venus in a weird eccentric orbit in resonance with Earth, would that work?

[silversliver]

And now Aurora.

I'm not entirely convinced by the colour but the surface is very similar to the image.

 

[ChrisSpace]

And now Aurora.

I'm not entirely convinced by the colour but the surface is very similar to the image.

You never disappoint me. Did you get Aurora in a stable orbit? Also, I never expected Vulcan to have such a visible tail.

[fredinno]

8 hours ago, silversliver said:

And now Aurora.

I'm not entirely convinced by the colour but the surface is very similar to the image.

 

Is it just me, or is Aurora too small to be in hydrostatic equilibrium? I'm pretty sure it should be shaped irregularly, like most objects this small.

Otherwise, quite beautiful. 

[YNM]

19 hours ago, fredinno said:

Maybe, I have Venus in a weird eccentric orbit in resonance with Earth, would that work?

I don't know - unfortunately this thing can't simulate what happens over very long eons for a lot of Earth-sized planet in HZ... What's also interesting is also, probably, all the habitable planets are in some weird resonance to the major closest gas giant... Hmm too many guessing ! Somebody fire up some simulation ?

Edited December 14, 2015 by YNM

[silversliver]

12 hours ago, ChrisSpace said:

 

 

You never disappoint me. Did you get Aurora in a stable orbit? Also, I never expected Vulcan to have such a visible tail.

Yes, is in a circular 7-600,000 km orbit around kerbin.

The tail of Vulcan is short but very bright, it's visible from Saturn.

7 hours ago, fredinno said:

Is it just me, or is Aurora too small to be in hydrostatic equilibrium? I'm pretty sure it should be shaped irregularly, like most objects this small.

Otherwise, quite beautiful. 

I thought of Enceladus, also the surface is less regular than it seems the differences of altitude are around 70km.

26 minutes ago, YNM said:

I don't know - unfortunately this thing can't simulate what happens over very long eons for a lot of Earth-sized planet in HZ... What's also interesting is also, probably, all the habitable planets are in some weird resonance to the major closest gas giant... Hmm too many guessing ! Somebody fire up some simulation ?

With more orbital parameters about gas giants I could do it with universe sandbox but only for around 200 years maybe 300, then the sim would probably crash.

[fredinno]

3 hours ago, YNM said:

I don't know - unfortunately this thing can't simulate what happens over very long eons for a lot of Earth-sized planet in HZ... What's also interesting is also, probably, all the habitable planets are in some weird resonance to the major closest gas giant... Hmm too many guessing ! Somebody fire up some simulation ?

Screw it, I'm playing it safe. L4 point it is!

[fredinno]

3 hours ago, silversliver said:

Yes, is in a circular 7-600,000 km orbit around kerbin.

The tail of Vulcan is short but very bright, it's visible from Saturn.

I thought of Enceladus, also the surface is less regular than it seems the differences of altitude are around 70km.

With more orbital parameters about gas giants I could do it with universe sandbox but only for around 200 years maybe 300, then the sim would probably crash.

"Yes, is in a circular 7-600,000 km orbit around kerbin." You might have to change that- it's supposed to be Earth, not Kerbin- also, we haven't really made the decision whether Lagrange point vs possible orbit around Earth. (srsly, we need a poll ChrisSpace!)

"The tail of Vulcan is short but very bright, it's visible from Saturn." I suppose you need a telescope for that? Vulcan seems pretty small.

"I thought of Enceladus, also the surface is less regular than it seems the differences of altitude are around 70km." I think we kind of decided on Auora being a main-belt comet: https://en.wikipedia.org/wiki/Main-belt_comet

It really can't be too bright, or everthing will sublimate off!

 

"With more orbital parameters about gas giants I could do it with universe sandbox but only for around 200 years maybe 300, then the sim would probably crash." My computer crashes running Universe Sandbox in warps above a few weeks per second- also, no textures show up.

My computer sucks .

 

I hope these aren't too big of a deal to change- as I have new descriptions of planets, from Sun to Jupiter!

 

v In Order of its Distance from SUN v

 (Inclination to Ecliptic if Planet, and Planet Inclination if Moon!)

[I did this using Gs instead of Mass- one can calculate between the two with http://nova.stanford.edu/projects/mod-x/ad-surfgrav.html]

{I tried to incorporate IRL bodies, the bodies in this Alt Timeline, and many KSP objects}

-Sun: Same as IRL. STAR

 

-Vulcan: Is the closest planet to the sun. It was discovered by Urbain le Verrier in 1862 when he was observing the transit of Mercury. Due to its closeness to the Sun, it is very hot. This was what led le Verrier to name it Vulcan, after the Roman god of fire and the forges. Vulcan is close enough to the sun for most of the planet to be molten. It is largely composed of dense Iron and Metals and Iron/Metal Compounds, as due to its proximity to the sun, all of the lighter volatiles and silicates characterising most planets in the Solar System boiled away from the Sun, at least on its Sun-facing side. The proximity of the planet to the Sun exerts a lot of gravitational energy on Vulcan, making it tidally locked. Volcanoes and lava dot much the surface, and contribute to the heat of the surface. The volcanoes on the surface emit large amounts of Carbon Dioxide and Sulfur into the atmosphere of Vulcan. However, the Sun's powerful solar wind blows away much of the accumulated gases into space. The night side, however, is relatively cold, at -150 Degrees Celsius, meaning silicates and Ices are present here. [0.3 G] PLANET (12° Inclination) {0.14 AU}

 

-Mercury: Is nearly the same as in OTL, except its orbit is somewhat less eccentric. [0.4 G] PLANET (7°) {0.35 AU}

 

-Io: Similar to both Mercury and Io in OTL. However, it is somewhat cooler, but has a more eccentric and inclined orbit that takes it in between Mercury and Earth's orbit. It also has a very slow rotation. It is composed of mostly Sulfur Dioxide, and has only a tenuous atmosphere. [0.2 G] PLANET (5°) {0.8-0.5 AU}

 

-Aurora: Near-Earth “Main-Belt Comet.” It is at the leading L4 Lagrange Point with Earth. It could become a valuable refuelling station and/or waypoint for future space missions, due to its incredibly high volatile content, constant position, and very low gravity. About the size of 4015 Wilson-Harrington (actually, the two are pretty much the same). Also, has a moon, Minnmus. [Negligible G] ASTEROID (7°) {1 AU}

 

-Minnmus: Only recently discovered, a very small, 7 Meter diameter Asteroid Moon. It is thought be a rubble pile consisting of fragments of Aurora that fell off during an impact with another object, as the two have similar composition. A leading candidate for the proposed Asteroid Redirect Mission, which would put Minnmus in Lunar Orbit. [Negligible G] MOON (0°) {1 AU}

 

-Phobos and Deimos: Now binary trailing-Earth Trojans. Otherwise, same as IRL. Both have similar compositions, and Phobos lacks the stress stripes caused by its proximity to Mars. [Negligible G] ASTEROIDS (14°) {1 AU}

 

-Earth: Same as IRL. Ignoring the effects of tidal locking, due to storyline purposes, it is a binary to Luna. It also is the home world of the most advanced species in the solar system – according to members of said species. [1.0G] PLANET (0°, in relation to Sun(Constant Format used throughout for objects orbiting the Sun)) {1.0AU}

 

-Luna: Earth’s only moon. It has a magnetosphere (formed by tidal heating), a biosphere and breathable air. It isn’t tidally locked, so ancient astronomers have been able to see both hemispheres. (Yes, I know this isn’t possible in real life, but I’m keeping it this way for the sake of the storyline). Luna is composed of similar material to Earth in OTL, and can be considered Earth's smaller “brother” (it is a little smaller than Mars in OTL. The planet is separated into two sections- the lower “Marina” are oceans, and the highlands on the other side of the planet are high plateaus with a thin atmosphere hazardous to humans. Its atmosphere extends much farther above its surface than Earth's due to its low gravity. It also is slightly cooler than Earth due to a thinner atmosphere. It lacks intelligent life, with the most intelligent creatures being similar to dolphins. [0.3 G] PLANET (0° Inclination, in relation to planet (Constant Format used throughout for objects orbiting another object)) {1.0AU}

 

-Venus: A habitable planet orbiting at a high inclination in resonance with Earth (avoiding gravitational interactions with it.) It has a (somewhat thick) atmosphere, magnetic field and a surface very different from OTL, covered largely with shallow oceans. It's land is also relatively low, lacking high plateaus, making it more vulnerable to flooding (especially due to more precipitation, due to the increased moisture from more evaporating water), but also more fertile. The air is breathable, but the surface temperatures average 53° Celsius. This makes the planet uninhabitable for unprotected humans, along with other complex earth organisms. Venus is home to the most advanced and complex ecosystems outside of Earth. It is also one of three places outside Earth that has intelligent life, which is currently limited to stone-age technology. [1.05 G] PLANET (40°) {1.1 AU}

 

-Eros: Venus' only moon, Eros has a very eccentric, inclined orbit. It is likely a captured near-Venus asteroid, and being a C-type asteroid, contains volatiles good for producing fuel for refueling. Eros is also a rubble-pile. [Negligible G] MOON (36° Inclination to Venus’ Inclination) {1.1 AU}

 

-Mars: Mars is one of the three places outside of Earth with intelligent life and one of the most complex biospheres in the solar system. It has a proper magnetosphere (due to its large moon causing tidal heating int the core) allowing it to retain a breathable atmosphere and a habitable, but relatively cold climate, due to its distance from the Sun and thinner atmosphere- the polar regions to 40°N and 40°S are in a perpetual ice age. Most of the rest of Mars is composed of the Mars equivalent of Tundra, and Boreal Forest. Additionally, the Tharsis Bulge’s elevated altitude makes it impossible for humans (or the native intelligent life) to enter without protection, however, it contains many valuable minerals due to its volcanism, including minerals not found on Earth. (Realistically, though, Tharsis could not form in a habitable Mars due to plate Tectonics.) Its intelligent life was not killed off by Smallpox and Measles shortly after the first manned landing, as the difference between species living on Mars and on Earth is so great (source from the Mars Underground by Robert Zubrin). Also slightly larger in size, compared to Mars in OTL. As this planet is largely dry, much drier than Earth (low amounts of evaporation from cold climate), it is considered a cold semi-desert planet by some scientists.

 

Mars' intelligent life is primarily composed of a post-industrial “utopian” civilization, where a small population live peacefully in the countryside, with automated factories producing most products with very high efficiency. Most of their time is spent either in the virtual realm, and as the world is bound under a Socialist policy, with everything people need under their fingertips for free. Much of the military technology has been lost, however, and as the completion for status in the virtual realm is the most important (along with an abundance of resources), wars have largely ceased. However, they are still capable of restarting their war technology production, with such blueprints and information required having been cataloged for many centuries. A war may only wake up a sleeping dragon.[0.4 G] PLANET (1°) {1.3 AU}

 

Bellona: Mars' only moon, about the size of Ceres in OTL and based off Ike in KSP. Bellona and Mars' compositions are similar, having formed from the same material. [0.03 G] MOON (4°) {1.3 AU}

 

Minerva: The largest rocky planet in the solar system. Its high gravity and large magnetic field (due to active volcanism) have let it develop a large, dense atmosphere, which is unbreathable due to the high concentrations of CO2 (above the human tolerance of 5mm partial pressure of CO2) to humans, but is perfectly suited to the native life, which is adapted to the conditions. Though there are large concentrations of CO2 on this planet (1% of Atmosphere), it is otherwise similar to Earth's Atmosphere. The Greenhouse effect from CO2 and evaporating water (water planet means more vapor) causes this planet to be habitable (at 25° Celcius Average Temperature) despite its distance from the Sun. Minerva is also one of three places outside of Earth known to have intelligent life, which is not highly advanced (compared to those of Venus, Earth, and Mars, but uses its ability to survive in an atmosphere mostly unsurvivable to humans to its advantage. Minivera is mostly like Laythe in KSP, but with much deeper oceans- as most of the continents are underwater, with only the mountaintops remaining (meaning the land that there is is slanted, and usually not optimal for agriculture). The planet has a very low axial tilt of 1°, meaning that there are no seasons. This, along with the lack of land, means that civilization is unlikely to advance much farther than basic agriculture without extra help. (Look: www.livescience.com/18972-earth-seasons-tilt.html). It does not have a large impact crater in the center (risk of blowing to pieces), and the deepest areas contain strange, exotic ices, due to their density. [1.2 G] PLANET (2°) {1.8 AU}

 

Juno: Minerva’s only moon. It is very close to Minevera, and will likely impact in 200 Million Years. Due to its small size compared to Minerva, however, Minerva's tides are surprisingly small. Very similar to Bellona, and likely formed from the same material as Minerva. (In front of Frost Line, unable to support surface ice) [0.04 G] MOON (1°) {1.8 AU}

 

Dres/Ceres: Same as in OTL, but somewhat larger, and in a more inclined orbit. Also is surrounded by a faint ring (“Dres-troids”), thought to be debris from a particularly large asteroid impact. These will likely disappear in a few million years as chunks of it crash into Ceres. [0.04 G] MOON (15°) {1.3 AU}

 

Jupiter: A gas giant, Jupiter is also the largest planet. It is basically the same as in OTL, but with a very different system of moons. [2.528G] PLANET (1.3°) {5.4 AU-4.95 AU}

 

Laythe: The closest moon to Jupiter, Laythe is very similar to its version in KSP- an ocean moon. However, due to tidal locking, its oceans are pushed to the poles, leaving behind a thin strip of land near the equator. Unfortunately, Laythe's tides are impressive- due to the gravitational forces from Jupiter, these tides have more resemblance to tsunamis on Earth than tides, making the land completely useless! (It's for a good reason no probes have landed here yet.) Though the tides hinders complex land life from growing, it has a breathable atmosphere, strong magnetic field (powered by Jupiter's tidal heating of the core) and many diverse sea-based ecosystems. Additionally, Laythe is very volcanically and tectonically active, spewing CO2, which is absorbed by cyanobacteria- however, these cannot support complex life at the surface, due to the lack of sunlight; all life here is deepwater, making use of thermal vents to survive. Additionally, the oceans are acidic, due to absorbing large amounts of CO2. Due to the lack of land and Sun, Laythe has an unbreathable atmosphere with a mere 5% oxygen, and composed of mostly nitrogen, with significant amounts of CO2(2%) and Water Vapor. The moon also lacks a giant impact crater (as this may have shattered the moon apart). Laythe is between the moons Io and Europa in OTL. [0.8 G] MOON (0°) {5.4 AU-4.95 AU}

 

Castillo: (WIP)

[silversliver]

2 hours ago, fredinno said:

"Yes, is in a circular 7-600,000 km orbit around kerbin." You might have to change that- it's supposed to be Earth, not Kerbin- also, we haven't really made the decision whether Lagrange point vs possible orbit around Earth. (srsly, we need a poll ChrisSpace!)

"The tail of Vulcan is short but very bright, it's visible from Saturn." I suppose you need a telescope for that? Vulcan seems pretty small.

"I thought of Enceladus, also the surface is less regular than it seems the differences of altitude are around 70km." I think we kind of decided on Auora being a main-belt comet: https://en.wikipedia.org/wiki/Main-belt_comet

It really can't be too bright, or everthing will sublimate off!

• I wanted to write Earth but I wrote kerbin, I don't know why, probably I'm playing too much ksp.
• The lagrange points are very (read: impossible) difficult to simulate in a realistic manner with my simulations so it will be better not.
• The tail is VERY bright. (and isn't consistent with my simulation)
• The simulation says that the higher the albedo the less the temperature, so it could be a vantage. So the more an object is brighter the lower it will be its temperature.

[fredinno]

1 hour ago, silversliver said:

• I wanted to write Earth but I wrote kerbin, I don't know why, probably I'm playing too much ksp.
• The lagrange points are very (read: impossible) difficult to simulate in a realistic manner with my simulations so it will be better not.
• The tail is VERY bright. (and isn't consistent with my simulation)
• The simulation says that the higher the albedo the less the temperature, so it could be a vantage. So the more an object is brighter the lower it will be its temperature.

Unfortunately, the Solar System Frost Line is near Ceres- inside this line, ice will sublimate if it at the surface. Main Belt Comets have their ice in cased in lots of dust, so the ice is stable.

We are all playin too much KSP.

 

Also, I used the equation here to determine the stability of Aurora there: https://en.m.wikipedia.org/wiki/Trojan_(astronomy)

[Findthepin1]

You said Laythe has a breathable atmosphere but then you said it doesn't.

Also, does Vulcan's lava ocean connect directly to the mantle and core, and is it tidally locked? I want to try an experiment to understand the inner workings of the thing.

 

Edited December 14, 2015 by Findthepin1

[silversliver]

34 minutes ago, fredinno said:

Also, I used the equation here to determine the stability of Aurora there: https://en.m.wikipedia.org/wiki/Trojan_(astronomy)

Yes it seems stable, and it seems to be even with 0.00008x Earth mass as wrote on the main page.

The doubt that I have with your version of Aurora is that seems too small. I was picturing something like Phobos and Deimos.

[KAL 9000]

Enough with the science, what about the story, @ChrisSpace?

[fredinno]

35 minutes ago, Findthepin1 said:

You said Laythe has a breathable atmosphere but then you said it doesn't.

Also, does Vulcan's lava ocean connect directly to the mantle and core, and is it tidally locked? I want to try an experiment to understand the inner workings of the thing.

 

Oh, woops. My bad.

I would think Vulcan's lava ocean on the tidally locked side of the planet would be more like an extension of the mantle.

32 minutes ago, silversliver said:

Yes it seems stable, and it seems to be even with 0.00008x Earth mass as wrote on the main page.

The doubt that I have with your version of Aurora is that seems too small. I was picturing something like Phobos and Deimos.

Well, smaller objects are also more common.

But let's let ChrisSpace decide.

16 minutes ago, KAL 9000 said:

Enough with the science, what about the story, @ChrisSpace?

It was supposed to be starting with a comet on a trajectory to hit Earth. There was also the idea of a Fusion Catalyst (perhaps by being a absurdly good neutron absorber that does not become irradiated easily.)

[ChrisSpace]

Yes, is in a circular 7-600,000 km orbit around kerbin.

The tail of Vulcan is short but very bright, it's visible from Saturn.

Wait, how is an orbit like that stable? Also, I suppose that throws my idea of 'Vulcan was discovered in 1862' out the window.

also, we haven't really made the decision whether Lagrange point vs possible orbit around Earth. (srsly, we need a poll ChrisSpace!)

Unless we can add L-points in KSP, we'll stick with other orbits. Yes, I am planning to make a mod of this.

I think we kind of decided on Auora being a main-belt comet: https://en.wikipedia.org/wiki/Main-belt_comet

It really can't be too bright, or everthing will sublimate off!

Hmm, I wanted Aurora to look like that but I see you have a point.

v In Order of its Distance from SUN v

 (Inclination to Ecliptic if Planet, and Planet Inclination if Moon!)

[I did this using Gs instead of Mass- one can calculate between the two with http://nova.stanford.edu/projects/mod-x/ad-surfgrav.html]

{I tried to incorporate IRL bodies, the bodies in this Alt Timeline, and many KSP objects}

It's gonna take me a while to look through all that.

Unfortunately, the Solar System Frost Line is near Ceres- inside this line, ice will sublimate if it at the surface.

Just wondering, how long would it take for Aurora's shiny surface to sublimate?

You said Laythe has a breathable atmosphere but then you said it doesn't.

Also, does Vulcan's lava ocean connect directly to the mantle and core, and is it tidally locked?

Oh, i'll need to check that. And yes Vulcan is tidally locked.

Enough with the science, what about the story, @ChrisSpace?

Once we have the solar system sorted out I can reveal my storyline plans. All I can say right now is that the story is of an alternate history where space travel is developed about 100 years earlier than in OTL.

It was supposed to be starting with a comet on a trajectory to hit Earth. There was also the idea of a Fusion Catalyst (perhaps by being a absurdly good neutron absorber that does not become irradiated easily.)

Well, that's only one plot point. And yes, nuclear fusion is perfected much earlier than in OTL, but that isn't for a while.

[fredinno]

Eh, Aurora is really iffy then. I really dislike the existance of Aurora. Quite a pain in the ass to deal with. Someone simulate the "Eccentric, inclined high Earth-Luna Orbit option, in universe sandbox, please. My version stopped working properly on my krakenty computer.

Space being developed much earlier in OTL would be quite difficult- rockets were developed in the first place because kraken Germany was desperate, and also needed a propaganda weapon that could also increase morale. Afterwards, much better rockets were developed, with the initial investment already complete. Then nukes were developed, soaring rockets to much greater importance. Such a scenario would have to have those done- and there to be a "Von Braun" and possibly an "Einstein" to push rockets (and nukes, needed for Cometary redirection) to the point that humanity would be remotely capable of fending off space objects. Bonus points for a Sputnik.

 

Aurora's icy surface would likely not form at all, where it is, or if it from farther out, sublimated long ago.

 

Vulcan can have a stable orbit, where Mercury will not throw the object out (and the Sun will not swallow it up)- this is the Vulcanoid zone, 0.06-0.21 AU from the Sun.

[YNM]

55 minutes ago, ChrisSpace said:

Unless we can add L-points in KSP, we'll stick with other orbits. Yes, I am planning to make a mod of this.

You can always make some improper lagrangian points, especially L3 / L4 / L5. For L4, just make the same orbit but advance the mean anomaly by 60 degrees ( (1/3)*pi radians). For L5, make it 60 degrees later.

[ChrisSpace]

Edited again, taking into account new suggestions