The planetary system for Krynnspace (the
Dragonlance solar system) is as follows, from the center outwards:
The Sun
Sirrion
Reorx
Krynn (moons are Solinari, Lunitari, and Nuitari)
Chislev
Zivilyn (moons are Gilean, Shinare, Takhisis, Sargonnas, Morgion, Chemosh, Zeboim, Hiddukel, Mishakal, Paladine, Kiri-Jolith, and Majrere)
Nehzmyth
The Stellar Islands
Not nearly as much is known about the Eberron planetary system. The sun appears to just be called The Sun. The planet itself is Eberron, and it has a ring around the world called Siberys. It has twelve moons (one for each month) named Zarantyr, Olarune, Therendor, Eyre, Dravago, Nymm, Lharvion, Barrakas, Rhaan, Sypheros, Aryth, and Vult. There was once a thirteenth moon, as there was a thirteenth dragonmark, but after its holders were eradicated in the War of the Mark, this moon (apparently) vanished. There are also eleven constellations, one for each dragon deity (described in
Draconomicon).
Mystara itself is a hollow planet. The interior has the atmosphere only hugging the outer edges. In the exact center is a space-like void in which its sun hangs. Mystara has two moons, Matera (which is like our moon), and Patera (which is invisible to most viewing, and where the Mystaran Immortals congregate). Mystara has what's known as the Skyshield around its atmosphere, keeping the planet's atmosphere from being lost, since its hollow nature means it doesn't have enough gravity to retain a normal atmosphere. The World Shield, the material deep in the earth that divides the surface world from the Hollow World, also adds gravity. Note that there are gaping holes to the Hollow World (hundreds of miles across) at each pole of the planet.
Athas's sun is, apparently, also just called The Sun. It has two moons. The larger one, golden in color, is called Guthay. The smaller, silver one is called Ral. Athas did see the periodic orbit of a comet called the Messenger, but lately it hasn't appeared.
Information on the planetary system of the
Birthright setting is virtually nil. The planet is called Aebrynis, and that's about all we know (it's assumed to have a sun and a moon).
And just to recap, here's the information for the previously mentioned campaigns:
Hawklord said:
There are 11 "planetary" bodies in the Greyhawk system (or crystal sphere).
This is all from the Greyspace book for Spelljammer so how much of this is still canon in third edition who knows!
- Oerth (standard Greyhawk setting) which all the others orbit round.
- Kule - one of Oerth's moons (airles moon with drow mind-flayer and kuo-toa underground)
- Raeni - oerthlike atmosphere various settlers and monsters
- Liga - Oerth's sun inhabited by various fire-based creatures
- The Grinder - basically an asteroid belt with lots of undead
- Edill - an "air world" mostly inhabited by dragons
- Gnibile - another "air world" with flying rocks inhabited by undead
- Conatha - a "water body" inhabited by various sahuagin mermen etc.
- Ginsel - A crescent shaped body inhabited mostly by humans
- Borka - a cluster of thousands of rocks inhabited by gobiloids and orcs
- Greela - another "cluster body" inhabited by humans and elves
- The Spectre - a "disk world" inhabited by various races
For Realmspace:
Amrbus said:
They are, in order, out from the sun:
• Anadia (Sperical earth planet with Umber Hulks and polar halflings inhabitants)
• Coliar (Spherical gas planet w/ floating earth islands, aarakocra and lizardmen inhabitants)
• Abeir-Toril (Spherical earth planet)
• Karpri (Spherical water planet inhabited by aquatic elves and giant insects)
• Chandos (Spherical water planet inhabited by humans, dwarves and orcs)
• Glyth (Spherical earth planet w/ rings with mind flayer and humanoid slave inhabitants)
• Garden (A cluster of asteroids held together by a huge living plant called Yggdrasil's child)
• H'Catha (A flat water world with a single mountain on both sides; inhabited by beholders)
Mark Plemmons said:
Technically, in the
Kingdoms of Kalamar campaign setting, Tellene is a continent, though its inhabitants believe it encompasses the entirety of the planet. Tellene has a warm-to-temperate climate. The southernmost tip of Tellene lies at roughly 20º latitude, while the northernmost explored areas rest at about 54º latitude. The sun rises in the east and sets in the west.
So Tellene is the name for the continent and the name for the planet.
Orbiting Tellene are three moons: Diadolai (Elven Moon), Pelselond (Big Star) and Veshemo (Mother Above). Diadolai is the smallest of the three moons and is reddish-pink in color. It is on an 80 day cycle from full moon to full moon. For most of the 80 day period, however, Diadolai does not appear in the nighttime sky. Because of its size (about 1/3 the size of Veshemo), Diadolai does not give off much light, even when full. The elves believe Diadolai to be the home of the gods.
Pelselond is a small moon as well, appearing only slightly larger than Diadolai. Pelselond’s full moon cycle is approximately 34 days and it usually appears white or off-white in color. Pelselond has an elliptic orbit and therefore, appears to be moving at varying speeds across the sky.
Veshemo is the largest of the three moons and occasionally eclipses the other moons from view. It is on a 28 day cycle, which is the basis for the calendar that most of Tellene uses. On the 14th of every month Veshemo is full; but being pale yellow in color, Veshemo gives off only slightly more light than Pelselond.
Every 280 years the three moons are aligned and full simultaneously. This event is recognized, but not necessarily celebrated, by almost every religion on Tellene. Veshemo and Diadolai are full together on various days in a 20 year cycle. Veshemo and Pelselond as well as Pelselond and Diadolai are full together at least once per year. Veshemo, Pelselond and Diadolai align or are full concurrently once every few years in a 40 year cycle. Two of the moons are in alignment several times a year.
The Brightstar: Another star exists only about half a light year away from Tellene’s. It is a double star with its twin being a black hole. The two rotate around each other so this very bright star slowly disappears and then reappears. Some hold that the two stars influence good and evil. While the Brightstar shines goodwill prospers, but when it dims, evil reigns supreme.