Mystara Planetary System
by unknown with additional work by RobinI dug deep into my sources, and found this; (Source; an Old D&D forum)
| RL Name | CM7 D&D Name | Thyatian name (Havard) | Size(miles) | Diameter(Miles) | Solar Distance(miles) | Basic Element | Other | |
| Sun | Sol | Ixionis, The Sun | Huge | 864.000 | 0 | Fire | Some Fire Elementals reside here | |
| Mercurius | Sol's Sister | Alphaksis/Asterius | Earth Type | 3012 | 36.231.000 | Fire/Earth | exists since 1008 AC, Named after Asterius, Patron of Trade (like the god Mercurius). Very Thin atmosphere of sodium, magnesium, calcium, and Traces of hydrogen, helium, and potassium. Almost no oxygen.−173 °C; −280 °F at night to 427 °C; 800 °F during the day. | |
| Venus | Mym | Valeriae | Earth Type | 7581 | 67.000.000 | Earth/Fire/Air | Hot very dense Atmosphere of carbon dioxide (oxygen high up enabling Floating life). Temp. surface is 467 °C, 872 °F | |
| Earth | Mystara | Mystara | Earth Type | 7926 | 92.900.000 | Earth/Water/Air | Civilization, Abundant Magic, Hollow | |
| Moon | Matera | Matera | Moon Type | 2159 | Satellite | Earth | Hollow with air and civilization, surface with visitor remnants, immortal city Pandius | |
| - | Patera | unknown | Earth Type | 1750 | Satellite | Earth/Water/Air | Civilization, Radates Invisibility Field | |
| - | - | Crown Rock | Rock | 500?? | 111.500.000? | Earth | Gravity Captured Rock From Begin Planetary system, Has air bubble around it. | |
| Mars | Telax | Vaniae | Earth Type | 4200 | 141.208.000 | Earth , Water(Ice) | Cold, minimum atmosphere (once had civilization), Frozen ocean at poles, super volcano 25 miles high near equator, giant impact crater northern Hemisphere(both possible responsible loss atmosphere) | |
| Phobos | - | - | Rock | 12,6 | Satellite | Earth | Exists since 1000 AC Rumors are this is a hollow artificial satelite(has Air inside) | |
| Deimos | - | - | Rock | 13,8 | Satellite | Earth | Exists since 1000 AC Rumors are this is a hollow artificial satelite (has Air inside) | |
| Damocles | Dimas | Damocles | Earth Type | 6103 | 257.000.000 | Earth | Highly Evolved (Technological??)warring Emerondians, Pyrithians, Pachydermion & Mindflayer civilization...Exploded 1000AC | |
| Geografos | - | - | Asteroid Belt Rock | 63x25 | 257.000.000 | Earth, , Water(Ice) | Gravity Captured Rock From Begin Planetary system-home of the Pyrithians, Has air bubble around it. | |
| Ceres | - | Old Emerond? | Asteroid Belt Rock | 633 | 257.000.000 | Earth, Air, Water(Ice) | Gravity Captured Rock From Begin Planetary system-home of the Emerondians, Has air bubble around it. | |
| Adonis | - | - | Asteroid Belt Rock | 0,5 | 257.000.000 | Earth, Water(Ice) | Exists since 1000 AC chunck of Damocles, Has air bubble around it. | |
| Planetoids | - | Pyrithian Asteroids | millions Asteroid Belt Rocks | 1d100x1d6 yard | 257.000.000 | Earth, (Water(ice) | mostly Gravity Captured Rock from begin Planetary system-home of the Pyrithians and Emerondians, tens of thousands additions in 1000-1005 AC by destruction Damocles. Some have air bubble around it. | |
| Jupiter | Loth | Tarastiae | Gas Giant with core | 89,009 | 483.080.000 | Air | Eternal Storms Central Core Gravity 2.7 times Mystara, suggested Core of debris/asteroids/Meteors and other within Diameter 300 miles. named after Tarastia,patron of justice (like the god Jupiter).Largest planetary atmosphere made of hydrogen, helium, small amounts methane, ammonia, hydrogen sulfide and water. | |
| Ganymedes | Ogre | - | Moon Type | 3508 | Satellite | Earth/Water (Ice) | Lots of Craters | |
| Callisto | Troll | - | Earth Type | 3239 | Satellite | Earth | Lots of Craters, local captured atmosphere in craters | |
| Io | Goblin | - | Earth Type | 1889 | Satellite | Earth/Fire | Highly Volcanic | |
| Europa | Orc | - | Earth Type | 2024 | Satellit | Water/Ice | Frozen Ocean, deep within warm. suggested life below ice (RL too!!) | |
| Amalthea | Kobold | - | Moon Type | 1280 | Satellite | Earth | Lots of Craters | |
| 11 Rocks | - | - | Rocks | 121 to 350 yard | Satellite | Earth | Exists since 1002 AC | |
| Ring of Debris | - | - | Rocks | 0.01x1d20yard | Satellite | Earth | Exists Since 1002 AC | |
| Saturn | Zoar | Khoronis | Gas Giant with core | 74,584 | 886.266.000 | Air | Eternal Storms, named after Khoronus, patron of time (like the god Saturn) | |
| Titan | Deth | - | Earth Type | 3625 | Satellite | Earth | Has Atmosphere, further Unknown. Nobody returned from here. | |
| Dione | Melim | - | Moon Type | 809 | Satellite | Earth | Lots of Craters | |
| Tethys | Mear | - | Moon Type | 765 | Satellite | Earth | Lots of Craters | |
| Mimas | Mass | - | Moon Type | 500 | Satellite | Earth | Lots of Craters | |
| Enceladus | Mob | - | Moon Type | 2100 | Satellite | Earth/Fire | Surface constantly renewed | |
| Rhea | Mag | - | Moon Type | 1754 | Satellite | Earth | Lots of Craters | |
| Japetus | Marc | - | Moon Type | 945 | Satellite | Earth | Lots of Craters | |
| 13 Rocks | - | - | Rocks | 72 to 512 yard | Satellite | Earth | Exists since 1005 AC | |
| Ring of Debris | - | - | Rocks | 0.01x1d20 yard | Satellite | Earth | Exists Since 1005 AC | |
| - | - | Three Sisters | Rocks | 1st 223,2nd 412,3rd 187 | 920.000.000? | Earth, Water(Ice) | Gravity Captured Rock From Begin Planetary system. Revolve around eachother. Tavern in Space here, Has air bubble around it. | |
| Uranus | Alith | Helea/Ouranos | Gas Type with core | 32,180 | 1.781.822.000 | Air | Eternal Storms (Planet’s solid surface is 7210 miles diameter) | |
| Titania | Titania | - | Earth Type | 1709 | Satellite | Earth(+the others less dominant) | Magical Planet (Titans live here) | |
| Oberon | Oberon | - | Earth Type | 899 | Satellite | Earth/Water(Others less dominant) | Magical Planet, forest civilization | |
| 13 Rocks | - | - | Rocks | 120 to 470 yard | Satellite | Earth | Exists since 1009 AC | |
| Ring of Debris | - | - | Rocks | 0.001x1d20 yard | Satellite | Earth | Exists since 1009 AC | |
| - | - | Big Rock | Rock | 1200?? | 2.220.000.000?? | Earth | Gravity Captured Rock From Begin Planetary system, Has air bubble around it. | |
| Neptune | Verdun | Proteanis | Gas Type with core | 30,752 | 3.230.000.000 | Air | Eternal Storms, named after Protius, patron of the ocean (like the God Neptune). | |
| Triton | Hot | - | Earth Type | 4093 | Satellite | Earth | Somehow radiates warmth form within | |
| Nereide | Hel | - | Moon Type | 1107 | Satellite | Earth | Lots of Craters | |
| Ariel | Haven | - | Moon Type | 765 | Satellite | Earth | Possible Interior civilization of Beholders | |
| - | Chagas | - | Earth Type | 5320 | 7.105.000.000 | Earth, cold | Destroyed in 1029 AC after Damocles debris collision | |
| Pluto | Chagas | Thanatoi | Moon Type | 737,6 | 3.663.976.000 | Earth, Water(Ice) | Was large Damocles section before, Exists since 1032 AC | |
| Charon | - | - | Moon Type | 753 | Satellite | Earth | Exists since 1038 AC (was Chagas before) | |
| Oort Cloud | Comet Belt | - | Rock | 1.4x10 | 10,000,000,000+ | Earth, Water(Ice)/Air, Belt | additions in 1041-1124 AC |
Havard's names added to it.Ripvanwormer's tips added.
As The DotE suggest Spillworld being a seperate multiplanet location, I did not add these to the list, as they do NOT belong to the Mystara Planetary system.
The names in Color are Alphatian additions, more probably not known to other cultures but at best,Old Blackmoor and maybe Old Nimmur, Azca, Herath
After some thought I think the alphatians would initially use the most prominent Galactic names, thus the elvish names, and expand from their.
Their was no CM7 Elvish name for the to all former Mystarans obvious visible planet of Damocles, So I translated this (Dark Companion) in Elvish which became Dimas or Deimas.
I searched and found my old diskettes this succesfully kept copy of text about Mystara's Solar system from the Old TSR site. My personal opinions are added in blue
Gas type Celestial body . A massive planet. They are most commonly composed primarily of 'gas' (hydrogen and helium) or 'ices' (volatiles such as water, methane, and ammonia), but also have a much smaller core composed primarily of compressed rock and metals from impact sources. Regardless of their bulk compositions, giant planets normally have thick atmospheres of hydrogen and helium.
Earth Type celestial Bodies have an Atmosphere of some kind and are capable of sustaining some form of life, most have also some kind of access to Magic. Only a few are known to have life on it .This last section was probably base on Planet Knowledge in Real Lufe when this was written. Today scientists think most earth type bodies have a fair to large change on life. But as long this is not proven, low life is thought to be more available than animal, let alone sentient life
Moon Type celestial bodies do not have an Atmosphere capable of sustaining life, and most are devoid of any form of life. They are typically surface damaged by a multitude of craters. (these can have—often magical created or sustained) pockets of atmosphere in or under the surface.
Rock Typecelestial bodies , rarely have an Atmosphere of any kind and are mostly the result of some celestial body destroyed or belong to the comet belt, where remaining creation debris resides. They are always irregular of shape, often somewhat cylindrical or roughly ball -shaped. Those large enough will be damaged by craters. Some can have ruins of buildings on them, remaining of their former Planetarian origin.
Damocles, it's civilization’s technology bore a striking resemblance to original Blackmoor's, exploded, in 1000AC. A war with extra-terrestial Mindflayers is suggested. It's fragments formed the Asteroid belt between Mars and Jupiter, while the several pieces shoot off and became new celestial bodies. The asteroid belt is meanwhile probven to be remnants of the creation of the planetary system, its total mass would supercede any existing material planet and even Neptune or Uranus in size. As this it can be best explained as Damocles sections and debris and dust were added to the Asteroid belt. The Three Sisters, Big Roc and Crown Rock are larger Rocks with their own orbit, also belonging to the same prime matter as the Asteroid belt and the Oort cloud
One gigantic piece or Damocles moon was hurled of towards the sun, vegetation completely burned away, it almost impacted within the sun. but it settled in a relative close orbit, becoming the closest celestial body of the solar system. It was named the Sol’s Sister during it’s fiery burning glow, which will slowly diminish in the upcoming centuries or millennia.
Another piece, first flew far out and crashed into Chagas, destroying it. With all the smaller and larger debris tagging along, it was caught in the gravitational pull of the sun, and finally took orbit. Charon (or better what remained of Chagas) fell to orbit around the gravitational pull of what became Pluto. Most of the other debris ended up in the comet belt or the asteroid belt.
Some pieces will fly around eternally and became Comets, until they will take impact on some celestial body. Other pieces become the gas giants' retrograde moons, or added themselves to the core and rings of debris of the four Gas giant planets.
Damocles’ destruction had great astrological influences during the Great Alphatian /Glantrian /Hulean /Thyatian war of 1005-1009AC, and one of the pieces crashed into Mystara, forming the Great Crater. Others caused great local destruction in areas they took impact in. Examples, Denagoth(this leads to my special adventure--when recovered and restored i'll post it), Bellisaria, Skothar.
When Damocles exploded, What would Mystarans think of this clearly visible phenomenon. Would it prophecy the Wrath of the Immortals, or other dark dangerous stuf, like an Apocalyps...if so in many towns and villagers doomssayers would have been available, conspiracies run wild and other things.
And then another thing; Damocles held an evolved civilization (of Mindflayers was said) which for some reason exploded. Suggested that they had an internal war, or external (Who??) or used some device/spell/technique even more destructive than the Blackmoor explosion in 3000BC..
The meteors falling down on Mystara (amongst others) and the astronomical changes will certainly have a great impact (literally and figurly speaking).
I must certainly dig up and restore my old adventure explaining some of this/based on this
| RL Name | CM7 D&D Name(Elven/Alphatian) | Thyatian name (Havard) | Blackmoor Name(Ripvanwormer) | Nithian | Milenian | Nimmurian | Herathian | Hule/Sind | Ochalean |
| Sun | Sol | The Sun | The Sun | Aten | Helios | Utu | Shamash | Surya | Taiyō |
| Mercurius | Sol's Sister | Alphaksis | Did not exist | Did not exist | Did not exist | Enki | Nabû | Budha | Suisei (water star) |
| Venus | Mym | Valeriae | Phellia | Ba’ah or Seba-djai | Aphroditê | Inanna | Ishtar | Sukra | Kinsei(metal star) |
| Earth | Mystara | Mystara | Terra | Geb | Gaia | Ki | šu-bur | Prithvi the Vast One | Chikyū |
| Moon | Matera | Matera | Luna | Aah or Iah | Selenê | Nanna | Sin | Chandra | Tsuki |
| - | - | Crown Rock | Rock | - | - | - | - | - | - |
| Mars | Telax | Vaniae | Henrin/The Red Planet | Heru-deshet | Ares | Gugulanna | Nergal | Mangala | Kasei(Fire Star) |
| Damocles | Dimas | Damocles | Hersh | Mer Kekewey(Friend Dark) | Skoúro fílo(Dark Friend) | Asbu muš(Dark Snake) | Ninurta(Slow Turtle) | andhakAra sodaryA(Dark Sister) | Meioosei(King of the Netherworld) |
| Planetoids | - | - | - | - | - | - | - | - | - |
| Jupiter | Loth | Khoronis | Odir | Her-wepes-tawy | Zeus | Enlil | Marduk | Brhaspati | Mokusei(Wood Star) |
| Saturn | Zoar | Proteanis | Temrin/Thanatos | Anubis | Kronos | Ninurta | Ninurta | Sani | Dosei(Earth Star) |
| - | - | Three Sisters | Rocks | - | - | - | - | - | - |
| Uranus | Alith | Helea/Ouranos | Hak | - | - | - | - | - | Tennoosei(King of Heaven) |
| - | - | Big Rock | Rock | - | - | - | - | - | - |
| Neptune | Verdun | Kaum | Mwajin- | - | - | - | - | - | Kaioosei(King of the Sea) |
| - | Chagas | Thanatoi | Hella | - | - | - | - | - | - |
| Oort Cloud | Comet Belt | - | - | - | - | - | - | - | - |
- ;this means unknown to that culture
The Nithians (like RL Egyptians) did not know of Saturn, but suggested it.
Current name (formerly unknown)
Added Ochalean names, and after deduction found names for Damocles (Translations in Brown
Inserted Missing name for Neptune and Pluto/Chagas as per Havard