α-Yridiae

Solar Data

Astrophysical

Environmental

Socioeconomic

Radius (km)

1.11x106

Tsurface

7,200 ˚K

Starport

N/A

Mass (kg)

3.18x1030

Atmosphere

N/A

Pop

N/A

Albedo

N/A

Hydrosphere

N/A

Gov’t

N/A

Orbital Dist.

N/A

Day

18 ady§

Tech

N/A

Axial Tilt (deg)

0.5

Year

N/A

Imports

N/A

agrav (m/s2)

N/A

Terrain

N/A

Exports

N/A

 

 

 

 

 

 

 

 

 

§ahr is defined as one standard antei hour

§ady is defined as one standard antei day

Alpha Yridiae is an F0-class, main sequence star with a surface temperature of 7,200˚K. The surface is yellow in color. The star has a record history of a very active magnetic field with numerous sunspots near the star’s equatorial latitudes, some reaching field strengths of 5000 Gauss. Astrophysicists estimate the star’s age to be approximately 3.7 billion years old with a total projected lifetime of 9.6 billion years, after which the star is expected to shed it’s outer layers and become a white dwarf. α-Yridiae is the brightest star in the local group within the Yridia Star Cluster. α-Yridiae is the only star with an extensive, life-sustaining planetary system.

 

 

 

Yridia I

Planetary Data

Astrophysical

Environmental

Socioeconomic

Radius (km)

6115

Temperature

25 to 142˚C

Starport

None

Mass (1024 kg)

4.87

Atmosphere

80% SO2

20% CO2

Pop

0

Albedo

0.2

Hydrosphere

Ice: 0%

Water: 0%

Gov’t

None

Orbital Dist. (AU)

0.4

Day (ahr§)

11

Tech

None

Axial Tilt (deg)

19.0

Year (ady§)

220

Imports

None

agrav (m/s2)

8.7

Terrain

Volcanic

Exports

None


Yridia I is the most geologically active body within the Yridian System. Fault lines cover most of the surface, and subduction occurs along at least seventeen crustal plates at any time. Every 100,000 years the entire crust liquefies, producing new tectonics and reshaping the terrain every cycle. The entire surface is full of holes where volcanoes spew carbon dioxide and suphur dioxide into the atmosphere. Massive sulfur flows dominate the equatorial regions. Vast plumes rise off of the planet, ejecting gases hundreds of kilometers into space. An array of colors paint the hot surface, indicating hot, cool, and solidified lava flows. The massive outflow of silicon dioxide and carbon dioxide from the volcanoes makes for a rather thick atmosphere with increased pressure, barely livable by most humanoids. Massive acid rain storms are known to pour on the surface during the winter and spring months when the lower atmosphere is coolest. The polar regions, while areas of decreased volcanic activity, are victim to constant earthquakes from eruptions elsewhere on the planet, pitting the more brittle polar surfaces with hundreds of fault lines. The planet is unlivable and is considered to be off limits to all Tarentum personnel.

 

 

 

 

Yridia II

Planetary Data

Astrophysical

Environmental

Socioeconomic

Radius (km)

6400

Temperature

-10 to 31˚C

Starport

Limited

Mass (1024 kg)

5.8

Atmosphere

67% N2

32% O2

1% Ar

Pop

1,500,000

Albedo

0.3

Hydrosphere

Ice: 5%

Water: 94%

Gov’t

Theocracy

Orbital Dist (AU)

0.7

Day (ahr)

27

Tech

Feudal

Axial Tilt (deg)

1.0

Year (ady)

344

Imports

Metals, Medicine,

Technology

agrav (m/s2)

9.4

Terrain

Ocean

Exports

Foodstuffs

 

Yridia II is mostly a water world. Only 1% consists of land above ocean level. The ocean contains a very diverse ecosystem. 10 million years ago, the fossil record indicates that three major continents existed above water when the climate was much cooler and more water was locked in ice caps. Since then, a warming trend has all but submerged these continents. Though there is no visible geological activity from space, plate tectonics still exist on Yridia II. It is therefore no surprise that geothermal heating is largely responsible for maintaining the underwater civilization on Yridia II. In the western hemisphere, there are two huge geologic features. One of these is a vast rift spanning 4500 kilometers in a roughly east-west direction. The second is more unusual still. Roughly 2000 kilometers from the last Yridian outpost exists a large subterranean system of caves away from the fault lines and subduction between tectonic plates further to the east. The area was recently discovered, is believed to be stable, and is not connected to the ocean.

 

Koros

 

Lunar Data

Astrophysical

Environmental

Socioeconomic

Radius (km)

1700

Temperature

-30 to 31˚C

Starport

None

Mass (1024 kg)

0.08

Atmosphere

None

Pop

0

Albedo

0.2

Hydrosphere

None

Gov’t

None

OrbitDist (103 km)

300

Day (ahr)

25

Tech

None

Axial Tilt (deg)

1.0

Year (ady)

N/A

Imports

None

agrav (m/s2)

1.8

Terrain

Rocky

Exports

None

 

Koros is tidally locked with Yridia II, the same side always facing the planet. Without an insulative atmosphere, the dark side is much colder than the starlit side. Formerly the home of House Cestus, this moon became abandoned after an outbreak of Draugr. While some facilities remain, most of the installation is in dire need of repairs before being considered operational once again.

 

Fenris

 

Lunar Data

Astrophysical

Environmental

Socioeconomic

Radius (km)

1000

Temperature

-30 to 31˚C

Starport

None

Mass (1024 kg)

0.04

Atmosphere

None

Pop

0

Albedo

0.2

Hydrosphere

None

Gov’t

None

OrbitDist (103 km)

800

Day (ahr)

46

Tech

None

Axial Tilt (deg)

39.0

Year (ady)

N/A

Imports

None

agrav (m/s2)