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Post by joatmoniac on Feb 14, 2017 8:34:31 GMT
We take to the skies for this one! Granted not too far into them, as that is often an endeavor that is fraught with peril, and a ton of work, haha. I attempted to name this one as a play off of the Denny's dish Moons Over My Hammy, but it may fall flat we will see! I'm not sure if it was ever established one way or another, but this will likely mean that the world of Dayeimbe is a sphere. Not that it necessarily has to, but it makes the most sense that way. It also forces a few other pieces of info that would help to simplify talking about moons. Again, for simplicity I think having the world of Dayeimbe be roughly equivalent to earth in size will go a long way to make things easier to work on. I rolled a d4 to determine how many substantially sized moons there would be in orbit around Dayeimbe. The number I came up with was 2, but this need not be the only things surrounding the world, but will be the ones that are large enough to easily be seen in the sky, and draw the attention of players and NPCs alike. This idea dips into science a tad more than ... well probably all of the other DM-Nastics combined, so we will see how things go! Grab ONE of the items below and let's get the party started. If you need inspiration Jupiter's Moons: Ganymede Callisto Io Europa Saturn's Moons: Mimas Enceladus Tethys Dione Rhea Titan IapetusMoon 1 1. Name: 2. Size relative to our own moon (i.e. 1 moon or .75 moon etc) 3. gravity relative to our own 4. Atmosphere 5. Composition of moon's surface 6. orbital period? how long does it take to go around Dayeimbe 7. Has it been visted? 7a. If yes, first visited by 7b. How did they get there? 7c. do people still get there easily? 8. Inhabitants? 8a. present or past 8b. level of sentience 9. Anything else! Moon 2 1. Name: 2. Size relative to our own moon (i.e. 1 moon or .75 moon etc) 3. gravity relative to our own 4. Atmosphere 5. Composition of moon's surface 6. orbital period? how long does it take to go around Dayeimbe 7. Has it been visted? 7a. If yes, first visited by 7b. How did they get there? 7c. do people still get there easily? 8. Inhabitants? 8a. present or past 8b. level of sentience 9. Anything else! 10. Something else orbiting the planet seeing as how "There are 67 known moons of Jupiter" I think the possibilities are endless. Super excited to see how this one goes! |
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Post by dmgenisisect on Feb 14, 2017 11:19:24 GMT
I know this is answering multiple questions at the same time, but given we have two moons I thought it might be cool to propose this: Both moons are 'about the same size' as Dayeimbe, that way we can have them configured in this realy cool (though in reality highly unstable) configuration:  In the night sky of Dayeimbe the two moons would look like they're dancing with each other across the sky, and would periodically grow larger and smaller. The moons gravities would be similar to Dayeimbe's in this case, unless we want to get all wonky with how gravity works. As this answers multiple questions I'll ofcourse leave it up to others to decide if we run with this. If you want to see someone render the motion I snagged the image from this video. |
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Post by dmcaleb on Feb 15, 2017 1:00:31 GMT
"Grab one of the items below" que? Anyhoo here are 2 groups of 2 moons because why not. I am not familiar with this campaign setting, but I hope these moons are worthy of inspiration if for nothing else.
"Chuvox and Nostros"
The historical records have always recognized Nostros as a moon, but chuvox didn't appear on any astrological charts until after 'the awoken dreams', a historical, if not mythical, event where all the races of the world were allowed to dream and have nightmares.
Moon 1
1. Name: Nostros
2. Size: .25 relative to our own moon
3. gravity: relative to our own
4. Atmosphere: created and sustained by a wizard academy on Nostros
5. Composition of moon's surface: rocky with an earth elemental clan that is annoyed with the wizard's terraforming
6. orbital period: 28 days, but has orbited chuvox since it's appearance
7. Has it been visted? Yes, a branch of a wizard academy has been created on Nostros.
7a. If yes, first visited by: It was actually first visited by a very troubled archmage fraught with nightmares. Once they determined it was safe enough, the academy made plans to colonize.
7b. How did they get there? Teleportation. There is now a permanent gate between Nostros and the home campus, but only select students and staff are permitted to use it of course.
7c. do people still get there easily? Yup through said portal.
8. Inhabitants? Earth elementals mostly, Galeb duhr, and one really lazy dao genie who does the absolute minimum.
Moon 2
1. Name: Chuvox
2. Size: relative to our own moon
3. gravity: 1/2 relative to our own
4. Atmosphere: none
5. Composition of moon's surface: rocky and craggy, with layers of webby slime over everything
6. orbital period? 28 days
7. Has it been visted? Many have tried, none returned.
8. Inhabitants? Aboleth, beholders, and oozes aplenty
9. Anything else! Chuvox is actually a massive spherical monster and planet eater. It teleported into orbit and haunts it. The fear garnishes the planet making it tastier. Once there is enough chaos and fear Chuvox will awaken and devour the world. The beholders and aboleth are its 'saliva' which is meant to spread fear in the world. Chuvox will starve to death if fear is destroyed.
"Huginn and Muninn"
The god of knowledge's symbol is the sun, a light against the darkness of ignorance. He has two ravens Huginn and Muninn symbolizing Thought and Memory respectively.
Moon 1
1. Name: Huginn (thought)
2. Size: .5 relative to our own moon
3. gravity: relative to our own
4. Atmosphere: stale, but breathable.
5. Composition of moon's surface: except for the 13 temples (13x28 days=364 assumed days in a year) the surface of this moon is perfectly flat. On its face are endless arcane runes that depict the possible futures. The runes are constantly changing.
There is a scarred crag from the 13th temple that stretches 39 miles where the god of chaos tore into its surface to hide a secret.
6. orbital period: 28 days
7. Has it been visted? Yes, by anyone who is desperate for answers since the inhabitants aren't very welcoming.
7a. If yes, first visited by: a family of sphinx with a love of riddles.
7b. How did they get there? They flew. Once there they summoned servants to build the 13 temples. Each full moon they would have a riddle battle at the temple the full moon is currently highlighting.
7c. do people still get there easily? Without being summoned by a sphinx the way is a bit dangerous.
8. Inhabitants? The family of sphinx now only rule 3 of the temples, they lost the others in riddle battles. The other temples are now occupied by monk orders, wizards, githzerai, a naga, storm giants, and a djinn that adores riddles.
9. Anything else? Each of the temples may help you divining the future, but they each have different requirements.
Moon 2
1. Name: Muninn (Memory)
2. Size: .5 relative to our own moon
3. gravity: relative to our own
4. Atmosphere: very similar to our own
5. Composition of moon's surface: an endless gnarled forest with a mossy bed that covers the Rocky surface with the complete history of the universe etched on its surface (as the universe ages the moon will grow larger)
6. orbital period: 84 days (3 day full moon)
7. Has it been visted? Yes, but digging into the past is a dangerous venture.
7a. If yes, first visited by: Jonathan carver. A druid who wanted to know why this moon affected lycanthropes and not Huginn.
7b. How did they get there? Teleportation.
7c. do people still get there easily? Nope
8. Inhabitants? Giant wolves, boars, rats, and other beasts. Every kind of were beast which are broken up into various warring clans. Dinosaurs and other creatures that hark back to the dawn of time.
9. Anything else? The races of the world were once little more than beasts before the loving hand of the gods. Muninn is the memory of a time without. The light of this moon reacts with lycanthropy to awaken the memory of the beasts. No lycanthrope can walk Muninn as their base race.
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Post by lasersniper on Feb 16, 2017 19:50:43 GMT
I feel like 7 is meant to be answered more or less by a single person, so here is my take.
(Currently) Moon 1
7. Has it been visited?
Yes
7a. If yes, first visited by
A group of powerful warriors and wizards who were trying to trap a powerful creature/being away from the regular mortal.
7b. How did they get there?
A combination of Teleportation(momentum) and Dimensional(distance) magics, along with and artifact that was able to store/amplify the ritual/spell enough to reach Moon 1.
7c. do people still get there easily?
No, and most people may not even realize the danger was taken to the moon at all, as the casters, and warriors teleported themselves in the process, never to be heard from again.
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Post by dmgenisisect on Feb 17, 2017 4:43:08 GMT
What threat do we want to put up there? First thing that came to my mind was the Terrasque...
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Post by lasersniper on Feb 17, 2017 6:56:51 GMT
What threat do we want to put up there? First thing that came to my mind was the Terrasque... Honestly I was thinking of some magically or demonic tied big bad when I first thought of this. But having a terrain destroyer like the Terrasque could actually be REALLY interesting. Given enough time, the faces of the moon could shift and change into different images because the thing is still rampaging up there! |
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Post by dmgenisisect on Feb 17, 2017 10:07:41 GMT
How about there was once a time both moons sustained life but now that the terrasque has been dropped on it all non-terrasque life on the moon had been extinguished and the moon is now a desolate waste land. It might be cool to use the other moon for a source of aberrations, psionics etc...
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Post by joatmoniac on Feb 19, 2017 19:24:05 GMT
"Grab one of the items below" que? Typically one person grabs one of the options for the exercise, but I can't argue with the awesome amount of work you have done here! I really like these ideas, and will likely steal some for my home game, haha. Definitely going to fold some into this exercise too! |
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Post by joatmoniac on Feb 19, 2017 19:39:45 GMT
I know this is answering multiple questions at the same time, but given we have two moons I thought it might be cool to propose this: This is awesome! Where did you get the picture and video? I would love to do more research into this as it is super intriguing to me. I think it could be super cool, but I would want to see if there is any data on the effect of some of these orbits. My concerns come when it whips through a portion of the orbit at what seems to be a much faster speed. Would that increase gravity during that time? Would the opposite end be different? Tons of cool questions to be asked with it, haha. |
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Post by blakeryan on Feb 19, 2017 21:17:26 GMT
I know this is answering multiple questions at the same time, but given we have two moons I thought it might be cool to propose this: Both moons are 'about the same size' as Dayeimbe, that way we can have them configured in this realy cool (though in reality highly unstable) configuration: In the night sky of Dayeimbe the two moons would look like they're dancing with each other across the sky, and would periodically grow larger and smaller. The moons gravities would be similar to Dayeimbe's in this case, unless we want to get all wonky with how gravity works. As this answers multiple questions I'll ofcourse leave it up to others to decide if we run with this. If you want to see someone render the motion I snagged the image from this video. That is fantastic, i'm guessing Dayeimbe is the one going around the outside, and the whole lot hangs together as they orbit the sun? |
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Post by dmgenisisect on Feb 19, 2017 21:44:43 GMT
joatmoniac: So I found the simulations while searching for "periodic solutions to the three body problem" and it looks like the guy who made the video arrived at the by parameter searching for stable solutions, which means that a lot of solutions he shows aren't really physical, especially the ones where it looks like two of the bodies collide, and the ones where a body turns back on itself. You probably won't find any data on orbital structures that look like the ones in the video, even if you only limit yourself to the ones that are physical, all of the poses features that render them unstable, which means that they would likely make them split up not stay together. Further, based on what we know about moon (and for that matter planetary) formation, you'll never see orbits like this. The only likely candidate for these extreme orbits is some three star action. In regards to the apparent speed of the bodies. As something living on the surface of one of these bodies the speed will have virtually no effect. But the speed is inversely proportional to distance, so those points of fast motion represent times where two bodies are incredibly close, this would suggest intense tidal periods, and if they get close enough, we may even see changes in rotation (days getting longer) and in some extreme cases noticeable changes in gravitational strength (but I suspect that if we're getting ithat close we have bodies tearing each other apart). Mentioning rotation, if we go with my proposed orbitals the two moons would be tidally locked with each other. Tidal loc is when your spin period is equal to your orbital period so you only ever show one face to each other (I couldn't remember if you brought this up in the episode or not). So depending on where you stand o. The moons you may never see the other, or always see the other. As they both turn relative to the moon and star they would both have sun rises and sun sets, as well as planet rises and planet sets, but there is a point on each moon that would experience solar eclipse daily, and would see the planet disappear behind the other moon daily. Here I use daily as once per sun rise over moon. The day's lengths would be the same on each moon due to symetry, and would be 2 fifths of the time it takes for the planet to complete one full orbit, as it makes sense to call that a month, a day on the moon takes about 12 days on the planet (assuming a month equals 30 days and a day is 24 hours, ie. Dayienbe has earth month/days). So the eclipses would last for quite some time...
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Post by dmgenisisect on Feb 19, 2017 21:45:35 GMT
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Post by dmgenisisect on Feb 19, 2017 23:35:22 GMT
Actually I think I got this wrong, a day on the moons should take one fifth the time it takes for the planet to complete one orbit, so a day on the moon is 6 days assuming Dayeinbe has earth days/months. Also as I fun little side note the day length on Dayeinbe should have a little monthly wobble. Each day being longer when the planet is at it's maximal distance from the sun and shortest when it is closest to the sun. Here when i say day length I actually mean the length of the day and the night. I think this wobble is quite small though, and I hardly think the inhabitants would notice it. |
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Orinen
Squire
Posts: 41 
Favorite D&D Class: Dwarf
Favorite D&D Race: Monk/barber
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Post by Orinen on May 21, 2017 8:29:23 GMT
I'd like to propose for the moons to have lunar cycles of 19 days and 56 days. That way every one and a half year you get "moon conjunction" meaning they are either both full moon or new moon.
Note: I have very little knowledge regarding the actual workings of those things and I don't know if it's physically possible, so, you know...
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Post by dmgenisisect on May 21, 2017 10:52:58 GMT
It would be easy to do, just have the moons at particular distances from the planet. If we go with the super crazy orbit though we would need to invoke some kind of magic to justify that... Actually that reminds me the moon phases would be kind of weird, the moons would regularly have lunar eclipses as the other moon blocks the sun, but the moons would otherwise have the same phases (I think...)
I tried to build a simulation of this moon system using a prebuilt engine but the arrangement is super unstable and I could never get the moons and planet to not fly apart... I'm trying to render it as just an animation instead of a physics thing but I would need to characterise the motion of the bodies and I've been a bit too tired and sick of DEs lately to actually knuckle under and solve the equations of motions. I have a month of lecturing and marking soon so I'll try to knuckle under and get it done... When are you likely to record on this DMnastic? Gives me an idea on the deadline for it...
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