System & Planet

 

61 Ursea Majoris System

 

Introduction

This page details the 61 Ursae Majoris system, its planets and any information common to all the Joian colonies.

Astronomical Data

System Data

61 Ursae Majoris System Map

System Details

Star : 61 Ursae Majoris

Classification G8V Yellow Dwarf

Diameter 1,260,000 km

Mass 0.868 Sol Equivalent

Average Luminosity 0.52 Sol Equivalent

Effective Temperature 5140 Kelvin

Absolute Magnitude +5.55

Radius 0.904 Sol Equivalent

Life Zone 0.54 to 1.08 AU

Stutterwarp Thresholds

0.1G (Discharge) 0.07 AU or 11,104,781 km

0.001G (FTL) 2.34 AU

 

Planet I : Chaud Hothouse

Moon I-A Rock

Planet II : Gris Hothouse

Planet III : Joi Garden

Moon III-A : Blanche Rock

Moon III-B : Argent Rock

Moon III-C : Or Desert

Planet IV : Frais Failed Core

Planet V : Froid Failed Core

Moon V-A Ice Ball

Planet VI : Gelée Ice Ball

Moon VI-A Ice Ball

Moon VI-B Ice Ball

Planet VII : Heige Ice Ball

Planet VIII : Huitre Failed Core

Planet IX : Failed Core

Planet X : Glace Ice Ball

Planet XI : Givre Ice Ball

Moon XI-A Ice Ball

Moon XI-B Ice Ball

Moon XI-C Ice Ball

Planet XII : Grele Ice Ball

Planet XIII : Hiver Desert

Planet XIV : Grandpere Gas Giant

Moon XIV-A Rock

Ring

Moon XIV-B Desert

Moon XIV-C Rock

Moon XIV-D Ice Ball

Moon XIV-E Ice Ball

Moon XIV-F Ice Ball

Moon XIV-G Ice Ball

Moon XIV-H Rock

Moon XIV-I Ice Ball

Moon XIV-J Ice Ball

Planetary Details

Planet I : Chaud

Planet Moon
Chaud I-A

Orbital Data
Orbit 0.3 AU 70000 km
Orbital Period 0.18 T-Years
Planetary Data    
World Type Hot House Rock
Core Type Rocky Rocky
Diameter (km) 7000 3000
Density (Earth) 0.8 0.8
Mass (Earth) 0.14 0.01
Gravity (G) 0.45 0.19

Atmospheric Data
MMWR 29 159
Atmosphere Dense Vacuum
Pressure (atm) 0.45 0.19
Water No Rare Ice
Temperature Hot - V Hot Hot - V Hot
% Water 0 0

Stutterwarp Threshold
0.1 G 7418 2081
0.0001 G 234592 65819

Planet II : Gris

Planet
Gris
Orbital Data
Orbit 0.348 AU
Orbital Period 0.22 T-Years
Planetary Data
World Type Hot House
Core Type Rocky
Diameter (km) 11000
Density (Earth) 0.4
Mass (Earth) 0.262
Gravity (G) 0.353
Atmospheric Data
MMWR 23
Atmosphere Dense
Pressure (atm) 0.353
Water No
Temperature 0
% Water 0
Stutterwarp Threshold
0.1 G 10333
0.0001 G 326769

Planet III : Joi

Planet Moon Moon Moon
Joi Blanche Argent Or
Orbital Data
Orbit 0.765 AU 254880 km 339840 km 1019520 km

Period

(T-Years)

(T-Days)

(Local Days)

 

0.72

262.98

219.15

 

 

10.8

9.0

 

 

16.3

13.58

 

 

83.8

69.83

Planetary Data
World Type Garden Rock Rock Desert
Core Type Rocky Rocky Rocky Rocky
Diameter (km) 16992 3896 2030 6112
Density (Earth) 0.77 0.5 0.6 0.4
Mass (Earth) 1.863 0.015 0.002 0.045
Gravity (G) 1.050 0.156 0.098 0.196
Atmospheric Data
MMWR 5 255 326 78
Atmosphere Dense Vacuum Vacuum Thin
Pressure (atm) 1.050 0.156 0.098 0.196
Water Oceans Rare Ice Rare Ice Rare Ice
Temperature Temperate Temperate Temperate Cold - Hot
% Water 58 0 0 0
% Oxygen 19 5 5 5
Stutterwarp Threshold
0.1 G 27525 2435 4280
0.0001 G 870430 77008 31728 135340

Planet IV : Frais

Planet
Frais
Orbital Data
Orbit 1.683
Orbital Period 2.34
Planetary Data
World Type Failed Core
Core Type Rocky
Diameter (km) 2000
Density (Earth) 1.1
Mass (Earth) 0.004
Gravity (G) 0.176
Atmospheric Data
MMWR 178
Atmosphere Vacuum
Pressure (atm) 0.176
Water Ice Sheets
Temperature Cold - V Cold
% Water 30
Stutterwarp Threshold
0.1 G 1329
0.0001 G 42011

Planet V : Froid

Planet Moon
Froid V-A
Orbital Data
Orbit 2.0196 AU 2240000 km
Orbital Period 3.08
Planetary Data
World Type Failed Core Ice Ball
Core Type Rocky Icy
Diameter (km) 16000 400
Density (Earth) 1.1 0.5
Mass (Earth) 2.221 0.000
Gravity (G) 1.412 0.016
Atmospheric Data
MMWR 4 392
Atmosphere Massive Vacuum
Pressure (atm) 1.412 0.016
Water Ice Sheets Plentiful
Temperature Cold - V Cold Cold - V Cold
% Water 70 30
Stutterwarp Threshold
0.1 G 30061
0.0001 G 950600 2533

Planet VI : Gelee

Planet Moon Moon
Gelee VI-A VI-B

Orbital Data
Orbit 3.43332 AU 24000 km 400000 km
Orbital Period 6.83

Planetary Data
World Type Ice Ball Ice Ball Ice Ball
Core Type Icy Icy Icy
Diameter (km) 8000 400 4000
Density (Earth) 0.2 0.2 0.2
Mass (Earth) 0.050 0.000 0.006
Gravity (G) 0.128 0.006 0.064

Atmospheric Data
MMWR 89 980 354
Atmosphere Very Thin Vacuum Vacuum
Pressure (atm) 0.128 0.006 0.064
Water Plentiful Plentiful Plentiful
Temperature Cold - V Cold Cold - V Cold Cold - V Cold
% Water 30 40 60

Stutterwarp Threshold
0.1 G 4532
0.0001 G 143308 1602 50667

Planet VII : Neige

Planet
Neige

Orbital Data
Orbit 5.14998 AU
Orbital Period 12.54

Planetary Data
World Type Ice Ball
Core Type Icy
Diameter (km) 3000
Density (Earth) 0.1
Mass (Earth) 0.001
Gravity (G) 0.024

Atmospheric Data
MMWR 1276
Atmosphere Vacuum
Pressure (atm) 0.024
Water Plentiful
Temperature Cold - V Cold
% Water 40

Stutterwarp Threshold
0.1 G
0.0001 G 23270

Planet VIII : Huitre

Planet
Huitre

Orbital Data
Orbit 6.8 AU
Orbital Period 19.03

Planetary Data
World Type Failed Core
Core Type Rocky
Diameter (km) 11000
Density (Earth) 1.2
Mass (Earth) 0.787
Gravity (G) 1.059

Atmospheric Data
MMWR 7
Atmosphere Dense
Pressure (atm) 1.059
Water Ice Sheets
Temperature Cold - V Cold
% Water 80

Stutterwarp Threshold
0.1 G 17898
0.0001 G 565980

Planet IX :

Planet
IX

Orbital Data
Orbit 10.48 AU
Orbital Period 36.42

Planetary Data
World Type Failed Core
Core Type Rocky
Diameter (km) 9000
Density (Earth) 1
Mass (Earth) 0.359
Gravity (G) 0.722

Atmospheric Data
MMWR 14
Atmosphere Dense
Pressure (atm) 0.722
Water Ice Sheets
Temperature Cold - V Cold
% Water 100

Stutterwarp Threshold
0.1 G 12092
0.0001 G 382371

Planet X : Glace

Planet
Glace

Orbital Data
Orbit 13.46 AU
Orbital Period 53.00

Planetary Data
World Type Ice Ball
Core Type Icy
Diameter (km) 14000
Density (Earth) 0.2
Mass (Earth) 0.271
Gravity (G) 0.225

Atmospheric Data
MMWR 29
Atmosphere Standard
Pressure (atm) 0.225
Water Plentiful
Temperature Cold - V Cold
% Water 50

Stutterwarp Threshold
0.1 G 10491
0.0001 G 331764

Planet XI : Givre

Planet Moon Moon Moon
Givre XI-A XI-B XI-C

Orbital Data
Orbit 29.612 AU 30000 km 80000 km 90000 km
Orbital Period 172.96

Planetary Data
World Type Ice Ball Ice Ball Ice Ball Ice Ball
Core Type Icy Icy Icy Icy
Diameter (km) 2000 1334 1667 1500
Density (Earth) 0.5 0.5 0.2 0.6
Mass (Earth) 0.002 0.001 0.000 0.001
Gravity (G) 0.080 0.053 0.027 0.072

Atmospheric Data
MMWR 392 392 980 326
Atmosphere Vacuum Vacuum Vacuum Vacuum
Pressure (atm) 0.080 0.053 0.027 0.072
Water Plentiful Plentiful Plentiful Plentiful
Temperature Cold - V Cold Cold - V Cold Cold - V Cold Cold - V Cold
% Water 10 50 50 20

Stutterwarp Threshold
0.1 G
0.0001 G 28324 15418 13627 20153

Planet XII : Grele

Planet
Grele

Orbital Data
Orbit 35.5344 AU
Orbital Period 227.36

Planetary Data
World Type Ice Ball
Core Type Icy
Diameter (km) 13000
Density (Earth) 0.2
Mass (Earth) 0.217
Gravity (G) 0.209

Atmospheric Data
MMWR 33
Atmosphere Standard
Pressure (atm) 0.209
Water Plentiful
Temperature Cold - V Cold
% Water 50

Stutterwarp Threshold
0.1 G 9388
0.0001 G 296860

Planet XIII : Hiver

Planet
Hiver

Orbital Data
Orbit 78.17568 AU
Orbital Period 741.90

Planetary Data
World Type Desert
Core Type Rocky
Diameter (km) 3000
Density (Earth) 0.4
Mass (Earth) 0.005
Gravity (G) 0.096

Atmospheric Data
MMWR 319
Atmosphere Vacuum
Pressure (atm) 0.096
Water Rare Ice
Temperature Cold - V Cold
% Water 0

Stutterwarp Threshold
0.1 G
0.0001 G 46541

Planet XIV : Grandpere

Planet Moon Moon Moon Moon Moon
Grandpere XIV-A XIV-B XIV-C XIV-D
Orbital Data
Orbit 171.99 AU 768000 km 2304000 km 4608000 km 6144000 km 11520000 km
Orbital Period 2420.93

Ring
Planetary Data
World Type Gas Giant Rock Desert Rock Ice Ball
Core Type Rocky Rocky Rocky Rocky Icy
Diameter (km) 768000 900 5000 2000 300
Density (Earth) 1.1 0.5 1.1 1 0.3
Mass (Earth) 245669.052 0.000 0.068 0.004 0.000
Gravity (G) 208.989 0.036 0.441 0.160 0.007
Atmospheric Data
MMWR 0 392 41 196 653
Atmosphere Massive Vacuum Thin Vacuum Vacuum
Pressure (atm) 4.236 0.036 0.441 0.160 0.007
Water Crystals Rare Ice Rare Ice Rare Ice Plentiful
Temperature 0 Cold - V Cold Cold - V Cold Cold - V Cold Cold - V Cold
% Water 0 0 0 0 30
Stutterwarp Threshold
0.1 G 2499193 5251 1267
0.0001 G 79031413 8550 166063 40056 1275
Moon Moon Moon Moon Moon Moon
XIV-E XIV-F XIV-G XIV-H XIV-I XIV-J

Orbital Data
Orbit 11520000 km 23040000 km 34560000 km 38400000 km 53760000 km 115200000 km
Orbital Period

Planetary Data
World Type Ice Ball Ice Ball Ice Ball Rock Ice Ball Ice Ball
Core Type Icy Icy Icy Rocky Icy Icy
Diameter (km) 300 300 1000 4000 1000 1000
Density (Earth) 0.3 0.3 0.5 0.5 0.1 0.3
Mass (Earth) 0.000 0.000 0.000 0.016 0.000 0.000
Gravity (G) 0.007 0.007 0.040 0.160 0.008 0.024

Atmospheric Data
MMWR 653 653 392 141 1960 653
Atmosphere Vacuum Vacuum Vacuum Vacuum Vacuum Vacuum
Pressure (atm) 0.007 0.007 0.040 0.160 0.008 0.024
Water Plentiful Plentiful Plentiful Rare Ice Plentiful Plentiful
Temperature Cold - V Cold Cold - V Cold Cold - V Cold Cold - V Cold Cold - V Cold Cold - V Cold
% Water 30 10 20 0 20 50

Stutterwarp Threshold
0.1 G 2533
0.0001 G 1275 1275 10014 80112 4478 7757

Designers Notes

The system information is based upon the data presented in the Colonial Atlas and the Invasion Sourcebook. All the additional statistics were randomly generated using the system presented in the Director's Guide.

It should be noted that some of the orbital periods given in the Colonial Atlas are incorrect and the corrected values are listed here.

Version 2.1

14/01/2004

Copyright J.M. Pearson, 1999 - 2004
System & Planet