🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.26 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.52 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.26

Radius: 0.58

Gravity: 0.77 G

Time & Orbit

Eccentricity (e): 0.034

Orbit Range: 0.5 AU - 0.54 AU

Year: 135 Days

Day: 30.9 Hours

Environment

Temp: 268 °C

Axial Tilt: 35.3 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 0.81 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.15

Radius: 1.58

Gravity: 1.26 G

Time & Orbit

Eccentricity (e): 0.074

Orbit Range: 0.75 AU - 0.87 AU

Year: 262 Days

Day: 45.5 Hours

Environment

Temp: 124 °C

Axial Tilt: 32.8 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Satellites (1)

Outer Limit: 53,798,386 km

• M1: 65,973 km (0.068 R)

Planet 3 - Terrestrial

Semi-Major Axis: 1.39 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.4

Radius: 0.69

Gravity: 0.84 G

Time & Orbit

Eccentricity (e): 0.126

Orbit Range: 1.21 AU - 1.57 AU

Year: 590 Days

Day: 21.1 Hours

Environment

Temp: -21 °C

Axial Tilt: 23 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Planet 4 - Terrestrial

Semi-Major Axis: 1.75 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.01

Radius: 1

Gravity: 1.01 G

Time & Orbit

Eccentricity (e): 0.222

Orbit Range: 1.36 AU - 2.14 AU

Year: 833 Days

Day: 23.9 Hours

Environment

Temp: -47 °C

Axial Tilt: 37.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 5 - Terrestrial

Semi-Major Axis: 2.99 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.35

Radius: 1.41

Gravity: 1.18 G

Time & Orbit

Eccentricity (e): 0.207

Orbit Range: 2.37 AU - 3.61 AU

Year: 1861 Days

Day: 14 Hours

Environment

Temp: -104 °C

Axial Tilt: 28.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 53,798,386 km

• M1: 555,008 km (0.082 R)
• M2: 1,865,785 km (0.088 R)

Planet 6 - Terrestrial

Semi-Major Axis: 3.47 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.82

Radius: 1.71

Gravity: 1.31 G

Time & Orbit

Eccentricity (e): 0.001

Orbit Range: 3.47 AU - 3.47 AU

Year: 2326 Days

Day: 12.3 Hours

Environment

Temp: -119 °C

Axial Tilt: 1.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 7 - Gas Giant

Semi-Major Axis: 6.46 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 791

Radius: 12.3

Gravity: 5.23 G

Time & Orbit

Eccentricity (e): 0.077

Orbit Range: 5.96 AU - 6.96 AU

Year: 5909 Days

Day: 11.7 Hours

Environment

Temp: -143 °C

Axial Tilt: 45.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 53,798,386 km

• M1: 153,039 km (0.069 R)
• M2: 587,620 km (0.116 R)
• M3: 1,086,081 km (0.08 R)
• M4: 1,757,177 km (0.089 R)
• M5: 2,783,867 km (0.113 R)
• M6: 4,885,268 km (0.119 R)
• M7: 5,829,231 km (0.033 R)
• M8: 7,806,914 km (0.051 R)
• M9: 9,223,457 km (0.052 R)
• M10: 9,791,181 km (0.064 R)
• M11: 10,289,641 km (0.052 R)
• M12: 12,507,579 km (0.051 R)
• M13: 13,756,571 km (0.113 R)
• M14: 14,440,533 km (0.095 R)
• M15: 16,756,457 km (0.118 R)
• M16: 17,669,154 km (0.054 R)
• M17: 19,735,849 km (0.041 R)
• M18: 23,211,007 km (0.119 R)
• M19: 26,547,788 km (0.092 R)
• M20: 28,058,277 km (0.075 R)
• M21: 32,332,289 km (0.113 R)
• M22: 34,571,918 km (0.051 R)

Planet 8 - Ice Giant

Semi-Major Axis: 15.43 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 346.4

Radius: 4.5

Gravity: 17.11 G

Time & Orbit

Eccentricity (e): 0.227

Orbit Range: 11.93 AU - 18.93 AU

Year: 21813 Days

Day: 16.9 Hours

Environment

Temp: -200 °C

Axial Tilt: 37.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 53,798,386 km

• M1: 56,099 km (0.066 R)
• M2: 584,928 km (0.079 R)
• M3: 2,854,926 km (0.071 R)
• M4: 3,000,484 km (0.078 R)
• M5: 4,709,341 km (0.042 R)
• M6: 6,933,712 km (0.049 R)
• M7: 8,924,111 km (0.066 R)
• M8: 12,319,983 km (0.052 R)
• M9: 15,424,737 km (0.114 R)
• M10: 26,485,106 km (0.106 R)
• M11: 43,938,540 km (0.099 R)
• M12: 50,682,711 km (0.025 R)
• M13: 52,344,295 km (0.098 R)
• M14: 56,126,877 km (0.096 R)
• M15: 56,303,103 km (0.073 R)

Planet 9 - Ice Giant

Semi-Major Axis: 16.74 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 159.4

Radius: 4.3

Gravity: 8.62 G

Time & Orbit

Eccentricity (e): 0.137

Orbit Range: 14.45 AU - 19.03 AU

Year: 24649 Days

Day: 17.9 Hours

Environment

Temp: -184 °C

Axial Tilt: 27 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 53,798,386 km

• M1: 53,406 km (0.093 R)
• M2: 194,776 km (0.073 R)
• M3: 366,964 km (0.041 R)
• M4: 649,554 km (0.096 R)
• M5: 1,350,719 km (0.078 R)
• M6: 2,055,924 km (0.072 R)
• M7: 3,757,599 km (0.084 R)
• M8: 6,771,548 km (0.091 R)
• M9: 8,469,483 km (0.088 R)
• M10: 8,658,126 km (0.071 R)
• M11: 10,164,577 km (0.12 R)
• M12: 13,174,785 km (0.104 R)
• M13: 13,879,840 km (0.11 R)
• M14: 15,295,185 km (0.107 R)
• M15: 15,434,760 km (0.055 R)
• M16: 16,073,693 km (0.064 R)
• M17: 17,556,058 km (0.089 R)
• M18: 29,147,948 km (0.119 R)
• M19: 31,908,328 km (0.077 R)
• M20: 33,763,491 km (0.093 R)
• M21: 35,935,054 km (0.116 R)
• M22: 38,843,087 km (0.11 R)
• M23: 39,758,177 km (0.104 R)
• M24: 42,177,474 km (0.062 R)

Kuiper Belt

Range: 30.5 - 48.5 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 418 - 15,977 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit