🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.39 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.77 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.68

Radius: 1.23

Gravity: 1.11 G

Time & Orbit

Eccentricity (e): 0.17

Orbit Range: 0.64 AU - 0.9 AU

Year: 239 Days

Day: 37.9 Hours

Environment

Temp: 201 °C

Axial Tilt: 24.1 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 0.98 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.62

Radius: 1.21

Gravity: 1.11 G

Time & Orbit

Eccentricity (e): 0.211

Orbit Range: 0.77 AU - 1.19 AU

Year: 343 Days

Day: 16.8 Hours

Environment

Temp: 151 °C

Axial Tilt: 15.3 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 3 - Terrestrial

Semi-Major Axis: 1.3 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.48

Radius: 1.44

Gravity: 1.2 G

Time & Orbit

Eccentricity (e): 0.019

Orbit Range: 1.28 AU - 1.32 AU

Year: 523 Days

Day: 30.2 Hours

Environment

Temp: -3 °C

Axial Tilt: 47.5 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Planet 4 - Terrestrial

Semi-Major Axis: 1.33 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.47

Radius: 0.74

Gravity: 0.86 G

Time & Orbit

Eccentricity (e): 0.175

Orbit Range: 1.1 AU - 1.56 AU

Year: 542 Days

Day: 15.7 Hours

Environment

Temp: -3 °C

Axial Tilt: 34.3 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Satellites (1)

Outer Limit: 84,696,699 km

• M1: 482,603 km (0.109 R)

Planet 5 - Terrestrial

Semi-Major Axis: 1.97 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.93

Radius: 1.89

Gravity: 1.38 G

Time & Orbit

Eccentricity (e): 0.246

Orbit Range: 1.49 AU - 2.45 AU

Year: 976 Days

Day: 20.1 Hours

Environment

Temp: -51 °C

Axial Tilt: 41.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 84,696,699 km

• M1: 70,610 km (0.07 R)

Planet 6 - Terrestrial

Semi-Major Axis: 2.34 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.85

Radius: 1.28

Gravity: 1.13 G

Time & Orbit

Eccentricity (e): 0.15

Orbit Range: 1.99 AU - 2.69 AU

Year: 1264 Days

Day: 38.1 Hours

Environment

Temp: -77 °C

Axial Tilt: 7.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 7 - Terrestrial

Semi-Major Axis: 3.04 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.82

Radius: 1.71

Gravity: 1.31 G

Time & Orbit

Eccentricity (e): 0.168

Orbit Range: 2.53 AU - 3.55 AU

Year: 1872 Days

Day: 23 Hours

Environment

Temp: -90 °C

Axial Tilt: 18.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Asteroid Belt

Center: 4.63 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 8 - Gas Giant

Semi-Major Axis: 6.22 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 401.8

Radius: 14.8

Gravity: 1.83 G

Time & Orbit

Eccentricity (e): 0.027

Orbit Range: 6.05 AU - 6.39 AU

Year: 5478 Days

Day: 6.7 Hours

Environment

Temp: -142 °C

Axial Tilt: 17.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 84,696,699 km

• M1: 187,596 km (0.069 R)
• M2: 769,681 km (0.112 R)
• M3: 1,624,932 km (0.088 R)
• M4: 2,379,953 km (0.065 R)
• M5: 3,115,974 km (0.114 R)
• M6: 4,361,526 km (0.085 R)
• M7: 4,894,244 km (0.104 R)
• M8: 5,470,345 km (0.115 R)
• M9: 5,946,366 km (0.101 R)
• M10: 7,476,602 km (0.096 R)
• M11: 9,531,928 km (0.115 R)
• M12: 10,182,828 km (0.084 R)
• M13: 14,732,249 km (0.09 R)
• M14: 18,363,887 km (0.087 R)
• M15: 19,631,878 km (0.065 R)
• M16: 22,271,233 km (0.075 R)
• M17: 25,756,565 km (0.117 R)

Planet 9 - Gas Giant

Semi-Major Axis: 9.44 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 154.7

Radius: 8.3

Gravity: 2.25 G

Time & Orbit

Eccentricity (e): 0.112

Orbit Range: 8.38 AU - 10.5 AU

Year: 10241 Days

Day: 10.4 Hours

Environment

Temp: -173 °C

Axial Tilt: 145 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 84,696,699 km

• M1: 103,372 km (0.069 R)
• M2: 444,306 km (0.101 R)
• M3: 925,412 km (0.086 R)
• M4: 1,505,254 km (0.062 R)
• M5: 2,215,544 km (0.104 R)
• M6: 4,234,817 km (0.065 R)
• M7: 5,405,420 km (0.06 R)
• M8: 7,706,385 km (0.104 R)
• M9: 8,912,742 km (0.116 R)
• M10: 9,273,572 km (0.043 R)
• M11: 10,153,806 km (0.118 R)
• M12: 11,134,420 km (0.089 R)
• M13: 11,790,407 km (0.117 R)
• M14: 15,520,629 km (0.12 R)
• M15: 16,880,175 km (0.052 R)
• M16: 18,125,577 km (0.082 R)
• M17: 19,632,177 km (0.108 R)
• M18: 25,282,788 km (0.114 R)
• M19: 26,169,455 km (0.079 R)
• M20: 29,480,804 km (0.069 R)

Planet 10 - Ice Giant

Semi-Major Axis: 15.83 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 764.1

Radius: 7

Gravity: 15.59 G

Time & Orbit

Eccentricity (e): 0.026

Orbit Range: 15.42 AU - 16.24 AU

Year: 22239 Days

Day: 21.7 Hours

Environment

Temp: -181 °C

Axial Tilt: 11.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 84,696,699 km

• M1: 88,412 km (0.071 R)
• M2: 556,205 km (0.117 R)
• M3: 1,608,776 km (0.08 R)
• M4: 2,025,106 km (0.092 R)
• M5: 3,383,305 km (0.091 R)
• M6: 6,266,505 km (0.094 R)
• M7: 8,269,022 km (0.119 R)
• M8: 14,087,332 km (0.11 R)
• M9: 19,672,120 km (0.054 R)
• M10: 22,059,702 km (0.078 R)
• M11: 23,972,460 km (0.09 R)
• M12: 37,375,532 km (0.058 R)
• M13: 38,714,134 km (0.104 R)
• M14: 39,015,873 km (0.115 R)
• M15: 42,120,477 km (0.062 R)
• M16: 43,732,843 km (0.109 R)
• M17: 45,386,049 km (0.116 R)
• M18: 60,137,297 km (0.06 R)
• M19: 66,186,586 km (0.083 R)
• M20: 70,138,363 km (0.065 R)

Kuiper Belt

Range: 31.1 - 52.1 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 239 - 13,961 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit