🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.28 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.55 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.62

Radius: 1.67

Gravity: 1.3 G

Time & Orbit

Eccentricity (e): 0.044

Orbit Range: 0.53 AU - 0.57 AU

Year: 151 Days

Day: 39.2 Hours

Environment

Temp: 203 °C

Axial Tilt: 1.7 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 0.61 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.31

Radius: 1.61

Gravity: 1.28 G

Time & Orbit

Eccentricity (e): 0.211

Orbit Range: 0.48 AU - 0.74 AU

Year: 177 Days

Day: 13.6 Hours

Environment

Temp: 219 °C

Axial Tilt: 36 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 3 - Terrestrial

Semi-Major Axis: 0.65 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.86

Radius: 0.94

Gravity: 0.97 G

Time & Orbit

Eccentricity (e): 0.25

Orbit Range: 0.49 AU - 0.81 AU

Year: 194 Days

Day: 20.7 Hours

Environment

Temp: 169 °C

Axial Tilt: 22.3 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Satellites (1)

Outer Limit: 44,990,898 km

• M1: 275,858 km (0.1 R)

Planet 4 - Terrestrial

Semi-Major Axis: 0.93 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.84

Radius: 1.52

Gravity: 1.23 G

Time & Orbit

Eccentricity (e): 0

Orbit Range: 0.93 AU - 0.93 AU

Year: 333 Days

Day: 23.6 Hours

Environment

Temp: 25 °C

Axial Tilt: 5.3 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Satellites (2)

Outer Limit: 44,990,898 km

• M1: 70,012 km (0.034 R)
• M2: 571,913 km (0.114 R)

Planet 5 - Terrestrial

Semi-Major Axis: 1.3 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.3

Radius: 0.62

Gravity: 0.78 G

Time & Orbit

Eccentricity (e): 0.102

Orbit Range: 1.17 AU - 1.43 AU

Year: 550 Days

Day: 14 Hours

Environment

Temp: -13 °C

Axial Tilt: 177.7 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Satellites (1)

Outer Limit: 44,990,898 km

• M1: 14,960 km (0.113 R)

Asteroid Belt

Center: 3.26 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 6 - Gas Giant

Semi-Major Axis: 5.21 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 53.1

Radius: 12.8

Gravity: 0.32 G

Time & Orbit

Eccentricity (e): 0.099

Orbit Range: 4.69 AU - 5.73 AU

Year: 4410 Days

Day: 12.2 Hours

Environment

Temp: -140 °C

Axial Tilt: 15.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 44,990,898 km

• M1: 160,070 km (0.09 R)
• M2: 982,110 km (0.073 R)
• M3: 1,459,178 km (0.088 R)
• M4: 4,483,299 km (0.102 R)
• M5: 5,166,961 km (0.063 R)
• M6: 6,671,467 km (0.101 R)
• M7: 10,788,400 km (0.072 R)
• M8: 11,255,893 km (0.053 R)

Planet 7 - Ice Giant

Semi-Major Axis: 14.05 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 148.5

Radius: 4.8

Gravity: 6.45 G

Time & Orbit

Eccentricity (e): 0.053

Orbit Range: 13.31 AU - 14.79 AU

Year: 19531 Days

Day: 24.9 Hours

Environment

Temp: -187 °C

Axial Tilt: 22.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 44,990,898 km

• M1: 60,438 km (0.044 R)
• M2: 753,375 km (0.056 R)
• M3: 1,953,299 km (0.098 R)
• M4: 3,066,607 km (0.077 R)
• M5: 6,090,279 km (0.06 R)
• M6: 8,120,621 km (0.118 R)
• M7: 8,826,274 km (0.065 R)
• M8: 9,716,382 km (0.071 R)
• M9: 11,948,980 km (0.104 R)
• M10: 17,755,023 km (0.109 R)
• M11: 19,090,932 km (0.096 R)
• M12: 28,439,602 km (0.101 R)
• M13: 31,415,553 km (0.097 R)
• M14: 32,379,711 km (0.118 R)
• M15: 36,668,832 km (0.1 R)
• M16: 37,141,112 km (0.04 R)
• M17: 37,857,237 km (0.091 R)
• M18: 38,339,840 km (0.081 R)
• M19: 43,656,399 km (0.051 R)

Kuiper Belt

Range: 30 - 50 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 388 - 19,952 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit