🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.29 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.57 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.79

Radius: 1.87

Gravity: 1.37 G

Time & Orbit

Eccentricity (e): 0.098

Orbit Range: 0.51 AU - 0.63 AU

Year: 282 Days

Day: 36.7 Hours

Environment

Temp: -131 °C

Axial Tilt: 35.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.65 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.4

Radius: 1.42

Gravity: 1.19 G

Time & Orbit

Eccentricity (e): 0.2

Orbit Range: 0.52 AU - 0.78 AU

Year: 344 Days

Day: 20.8 Hours

Environment

Temp: -136 °C

Axial Tilt: 8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 41,212,497 km

• M1: 33,211 km (0.092 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.83 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 309.6

Radius: 11.7

Gravity: 2.26 G

Time & Orbit

Eccentricity (e): 0.025

Orbit Range: 0.81 AU - 0.85 AU

Year: 496 Days

Day: 7.3 Hours

Environment

Temp: -155 °C

Axial Tilt: 3.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 41,212,497 km

• M1: 145,559 km (0.078 R)
• M2: 534,214 km (0.075 R)
• M3: 1,160,879 km (0.078 R)
• M4: 1,974,991 km (0.088 R)
• M5: 2,793,740 km (0.12 R)
• M6: 3,441,798 km (0.118 R)
• M7: 3,973,170 km (0.046 R)
• M8: 4,464,000 km (0.068 R)
• M9: 4,879,883 km (0.077 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.18 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 156.9

Radius: 11.7

Gravity: 1.15 G

Time & Orbit

Eccentricity (e): 0.209

Orbit Range: 0.93 AU - 1.43 AU

Year: 841 Days

Day: 9.9 Hours

Environment

Temp: -174 °C

Axial Tilt: 3.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 41,212,497 km

• M1: 146,008 km (0.084 R)
• M2: 748,139 km (0.112 R)
• M3: 1,390,213 km (0.086 R)
• M4: 1,907,971 km (0.1 R)
• M5: 2,678,251 km (0.102 R)
• M6: 3,202,292 km (0.117 R)
• M7: 3,596,931 km (0.109 R)
• M8: 4,063,527 km (0.108 R)
• M9: 4,936,580 km (0.116 R)
• M10: 5,433,993 km (0.026 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.19 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 516.2

Radius: 10.6

Gravity: 4.59 G

Time & Orbit

Eccentricity (e): 0.158

Orbit Range: 1 AU - 1.38 AU

Year: 852 Days

Day: 10.5 Hours

Environment

Temp: -157 °C

Axial Tilt: 6.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 41,212,497 km

• M1: 134,937 km (0.108 R)
• M2: 644,019 km (0.082 R)
• M3: 1,097,749 km (0.103 R)
• M4: 1,440,478 km (0.087 R)
• M5: 1,838,707 km (0.099 R)
• M6: 3,926,196 km (0.092 R)
• M7: 5,164,268 km (0.115 R)
• M8: 6,947,176 km (0.116 R)
• M9: 7,439,203 km (0.105 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.27 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 850.6

Radius: 12.8

Gravity: 5.19 G

Time & Orbit

Eccentricity (e): 0.113

Orbit Range: 1.13 AU - 1.41 AU

Year: 939 Days

Day: 8.7 Hours

Environment

Temp: -164 °C

Axial Tilt: 14.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 41,212,497 km

• M1: 162,014 km (0.113 R)
• M2: 820,096 km (0.117 R)
• M3: 1,311,375 km (0.109 R)
• M4: 1,865,635 km (0.06 R)
• M5: 2,268,801 km (0.06 R)
• M6: 2,856,123 km (0.115 R)
• M7: 3,284,122 km (0.109 R)
• M8: 3,816,990 km (0.048 R)
• M9: 4,373,045 km (0.08 R)
• M10: 4,871,056 km (0.087 R)
• M11: 5,546,939 km (0.077 R)
• M12: 8,402,763 km (0.113 R)
• M13: 9,756,923 km (0.114 R)
• M14: 10,208,559 km (0.114 R)

Planet 7 - Gas Giant

Semi-Major Axis: 2.7 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 981.7

Radius: 9.4

Gravity: 11.11 G

Time & Orbit

Eccentricity (e): 0.188

Orbit Range: 2.19 AU - 3.21 AU

Year: 2910 Days

Day: 8.8 Hours

Environment

Temp: -210 °C

Axial Tilt: 38.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 41,212,497 km

• M1: 119,828 km (0.108 R)
• M2: 481,556 km (0.103 R)
• M3: 855,101 km (0.055 R)
• M4: 1,412,802 km (0.083 R)
• M5: 1,891,815 km (0.079 R)
• M6: 2,460,885 km (0.097 R)
• M7: 3,399,462 km (0.051 R)
• M8: 3,794,550 km (0.068 R)
• M9: 4,110,800 km (0.118 R)
• M10: 6,250,049 km (0.053 R)
• M11: 7,283,771 km (0.12 R)
• M12: 9,042,443 km (0.085 R)
• M13: 9,532,676 km (0.073 R)
• M14: 10,160,239 km (0.049 R)
• M15: 11,067,699 km (0.059 R)
• M16: 12,436,819 km (0.114 R)
• M17: 13,043,438 km (0.108 R)
• M18: 13,378,089 km (0.045 R)
• M19: 14,518,473 km (0.055 R)
• M20: 16,211,173 km (0.099 R)
• M21: 18,208,903 km (0.089 R)
• M22: 21,538,353 km (0.066 R)
• M23: 23,311,238 km (0.062 R)

Planet 8 - Gas Giant

Semi-Major Axis: 4.91 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 854.7

Radius: 14

Gravity: 4.36 G

Time & Orbit

Eccentricity (e): 0.129

Orbit Range: 4.28 AU - 5.54 AU

Year: 7137 Days

Day: 8.5 Hours

Environment

Temp: -212 °C

Axial Tilt: 15.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 41,212,497 km

• M1: 213,925 km (0.093 R)
• M2: 955,182 km (0.105 R)
• M3: 2,202,679 km (0.098 R)
• M4: 7,774,153 km (0.059 R)
• M5: 9,813,471 km (0.082 R)
• M6: 11,135,018 km (0.065 R)
• M7: 13,891,359 km (0.105 R)
• M8: 18,189,007 km (0.048 R)
• M9: 19,350,933 km (0.075 R)
• M10: 19,950,073 km (0.112 R)
• M11: 20,484,586 km (0.114 R)
• M12: 22,471,844 km (0.105 R)
• M13: 23,301,664 km (0.069 R)
• M14: 24,065,959 km (0.055 R)
• M15: 38,799,105 km (0.084 R)
• M16: 39,273,929 km (0.102 R)
• M17: 39,873,068 km (0.049 R)

Kuiper Belt

Range: 30 - 46 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 154 - 12,377 AU

Composition

Type: Cometary Reservoir

System's final boundary, containing trillions of icy planetesimals.

Gravitational Limit