🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.37 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.74 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.78

Radius: 0.91

Gravity: 0.94 G

Time & Orbit

Eccentricity (e): 0.216

Orbit Range: 0.58 AU - 0.9 AU

Year: 274 Days

Day: 41.1 Hours

Environment

Temp: -14 °C

Axial Tilt: 36.4 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Satellites (1)

Outer Limit: 26,781,875 km

• M1: 321,785 km (0.048 R)

Planet 2 - Terrestrial

Semi-Major Axis: 1.19 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.47

Radius: 1.64

Gravity: 1.29 G

Time & Orbit

Eccentricity (e): 0.004

Orbit Range: 1.19 AU - 1.19 AU

Year: 559 Days

Day: 17.8 Hours

Environment

Temp: -69 °C

Axial Tilt: 5.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 26,781,875 km

• M1: 281,244 km (0.095 R)
• M2: 601,832 km (0.098 R)

Planet 3 - Terrestrial

Semi-Major Axis: 1.46 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.78

Radius: 1.51

Gravity: 1.22 G

Time & Orbit

Eccentricity (e): 0.204

Orbit Range: 1.16 AU - 1.76 AU

Year: 759 Days

Day: 19 Hours

Environment

Temp: -90 °C

Axial Tilt: 12.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 4 - Terrestrial

Semi-Major Axis: 1.77 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.37

Radius: 0.67

Gravity: 0.82 G

Time & Orbit

Eccentricity (e): 0.223

Orbit Range: 1.38 AU - 2.16 AU

Year: 1014 Days

Day: 40.7 Hours

Environment

Temp: -97 °C

Axial Tilt: 33.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Asteroid Belt

Center: 2.03 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 5 - Terrestrial

Semi-Major Axis: 2.29 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.96

Radius: 1.54

Gravity: 1.25 G

Time & Orbit

Eccentricity (e): 0.07

Orbit Range: 2.13 AU - 2.45 AU

Year: 1492 Days

Day: 36.8 Hours

Environment

Temp: -132 °C

Axial Tilt: 42.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 6 - Terrestrial

Semi-Major Axis: 2.5 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.92

Radius: 1.54

Gravity: 1.23 G

Time & Orbit

Eccentricity (e): 0.051

Orbit Range: 2.37 AU - 2.63 AU

Year: 1702 Days

Day: 43.9 Hours

Environment

Temp: -127 °C

Axial Tilt: 9.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 7 - Gas Giant

Semi-Major Axis: 2.92 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 921.5

Radius: 11.6

Gravity: 6.85 G

Time & Orbit

Eccentricity (e): 0.209

Orbit Range: 2.31 AU - 3.53 AU

Year: 2148 Days

Day: 9.1 Hours

Environment

Temp: -137 °C

Axial Tilt: 20.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 26,781,875 km

• M1: 144,362 km (0.118 R)
• M2: 710,739 km (0.109 R)
• M3: 1,202,318 km (0.119 R)
• M4: 1,770,491 km (0.05 R)
• M5: 2,149,871 km (0.064 R)
• M6: 2,807,653 km (0.086 R)
• M7: 3,559,083 km (0.104 R)
• M8: 4,191,882 km (0.059 R)
• M9: 4,853,404 km (0.083 R)
• M10: 5,987,954 km (0.092 R)
• M11: 6,884,793 km (0.082 R)
• M12: 7,531,056 km (0.102 R)
• M13: 8,708,690 km (0.086 R)
• M14: 9,429,603 km (0.111 R)
• M15: 10,264,508 km (0.081 R)
• M16: 11,956,759 km (0.056 R)
• M17: 12,460,455 km (0.114 R)
• M18: 12,978,363 km (0.102 R)
• M19: 16,650,841 km (0.058 R)
• M20: 17,707,451 km (0.073 R)

Planet 8 - Gas Giant

Semi-Major Axis: 5.25 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 549.3

Radius: 14.7

Gravity: 2.54 G

Time & Orbit

Eccentricity (e): 0.18

Orbit Range: 4.31 AU - 6.2 AU

Year: 5178 Days

Day: 6.3 Hours

Environment

Temp: -162 °C

Axial Tilt: 39.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 26,781,875 km

• M1: 198,516 km (0.115 R)
• M2: 885,919 km (0.1 R)
• M3: 1,836,613 km (0.067 R)
• M4: 2,296,776 km (0.114 R)
• M5: 3,183,143 km (0.112 R)
• M6: 7,697,558 km (0.083 R)
• M7: 9,434,240 km (0.043 R)
• M8: 10,656,006 km (0.106 R)
• M9: 12,028,417 km (0.086 R)
• M10: 12,560,237 km (0.109 R)
• M11: 16,262,635 km (0.066 R)
• M12: 16,794,007 km (0.093 R)
• M13: 19,166,629 km (0.077 R)
• M14: 20,297,439 km (0.079 R)
• M15: 21,613,302 km (0.042 R)
• M16: 28,289,556 km (0.106 R)

Planet 9 - Gas Giant

Semi-Major Axis: 5.88 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 317.2

Radius: 9.6

Gravity: 3.44 G

Time & Orbit

Eccentricity (e): 0.161

Orbit Range: 4.93 AU - 6.83 AU

Year: 6137 Days

Day: 12.9 Hours

Environment

Temp: -168 °C

Axial Tilt: 28.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 26,781,875 km

• M1: 125,812 km (0.055 R)
• M2: 456,722 km (0.106 R)
• M3: 913,744 km (0.081 R)
• M4: 1,800,261 km (0.102 R)
• M5: 2,887,538 km (0.03 R)
• M6: 4,902,771 km (0.09 R)
• M7: 7,174,564 km (0.079 R)
• M8: 9,662,227 km (0.102 R)
• M9: 10,792,738 km (0.051 R)
• M10: 13,215,177 km (0.109 R)
• M11: 15,641,804 km (0.08 R)
• M12: 17,981,215 km (0.096 R)
• M13: 19,816,632 km (0.038 R)
• M14: 20,277,842 km (0.106 R)
• M15: 20,948,938 km (0.102 R)
• M16: 22,907,024 km (0.066 R)
• M17: 23,561,515 km (0.119 R)
• M18: 24,228,422 km (0.05 R)
• M19: 24,680,058 km (0.107 R)

Kuiper Belt

Range: 30 - 52 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 189 - 12,813 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit