🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.34 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.67 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.28

Radius: 1.1

Gravity: 1.06 G

Time & Orbit

Eccentricity (e): 0.193

Orbit Range: 0.54 AU - 0.8 AU

Year: 200 Days

Day: 38 Hours

Environment

Temp: 197 °C

Axial Tilt: 46 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 0.82 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.94

Radius: 1.73

Gravity: 1.32 G

Time & Orbit

Eccentricity (e): 0.228

Orbit Range: 0.63 AU - 1.01 AU

Year: 271 Days

Day: 45 Hours

Environment

Temp: 99 °C

Axial Tilt: 44.2 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 3 - Terrestrial

Semi-Major Axis: 0.98 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.8

Radius: 1.87

Gravity: 1.37 G

Time & Orbit

Eccentricity (e): 0.066

Orbit Range: 0.92 AU - 1.04 AU

Year: 354 Days

Day: 41.1 Hours

Environment

Temp: 46 °C

Axial Tilt: 46.9 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Satellites (2)

Outer Limit: 41,864,859 km

• M1: 204,500 km (0.101 R)
• M2: 563,236 km (0.071 R)

Planet 4 - Terrestrial

Semi-Major Axis: 1.06 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.16

Radius: 1.36

Gravity: 1.17 G

Time & Orbit

Eccentricity (e): 0.098

Orbit Range: 0.96 AU - 1.16 AU

Year: 399 Days

Day: 22.3 Hours

Environment

Temp: 20 °C

Axial Tilt: 153.8 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Planet 5 - Terrestrial

Semi-Major Axis: 1.43 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.49

Radius: 1.44

Gravity: 1.2 G

Time & Orbit

Eccentricity (e): 0.25

Orbit Range: 1.07 AU - 1.79 AU

Year: 625 Days

Day: 37.6 Hours

Environment

Temp: -39 °C

Axial Tilt: 0 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 41,864,859 km

• M1: 51,611 km (0.032 R)
• M2: 170,242 km (0.095 R)

Planet 6 - Terrestrial

Semi-Major Axis: 2.29 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.33

Radius: 1.8

Gravity: 1.34 G

Time & Orbit

Eccentricity (e): 0.082

Orbit Range: 2.1 AU - 2.48 AU

Year: 1266 Days

Day: 35.9 Hours

Environment

Temp: -72 °C

Axial Tilt: 33.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 7 - Terrestrial

Semi-Major Axis: 2.65 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.55

Radius: 1.83

Gravity: 1.36 G

Time & Orbit

Eccentricity (e): 0.135

Orbit Range: 2.29 AU - 3.01 AU

Year: 1576 Days

Day: 21.1 Hours

Environment

Temp: -99 °C

Axial Tilt: 34.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 8 - Terrestrial

Semi-Major Axis: 3.08 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.89

Radius: 1.29

Gravity: 1.14 G

Time & Orbit

Eccentricity (e): 0.157

Orbit Range: 2.6 AU - 3.56 AU

Year: 1974 Days

Day: 31.1 Hours

Environment

Temp: -105 °C

Axial Tilt: 11.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Asteroid Belt

Center: 4.41 AU

Composition

Type: Main (Rocky/Icy Mix)

A dense region of planetesimals and debris.

Boundary

Planet 9 - Gas Giant

Semi-Major Axis: 5.73 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 329.6

Radius: 9.2

Gravity: 3.89 G

Time & Orbit

Eccentricity (e): 0.218

Orbit Range: 4.48 AU - 6.98 AU

Year: 5010 Days

Day: 7.2 Hours

Environment

Temp: -156 °C

Axial Tilt: 42.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 41,864,859 km

• M1: 114,592 km (0.063 R)
• M2: 432,338 km (0.115 R)
• M3: 865,424 km (0.093 R)
• M4: 1,196,185 km (0.116 R)
• M5: 1,751,342 km (0.079 R)
• M6: 2,277,328 km (0.078 R)
• M7: 3,044,017 km (0.09 R)
• M8: 3,506,873 km (0.097 R)
• M9: 4,015,955 km (0.102 R)
• M10: 4,367,061 km (0.113 R)
• M11: 5,843,293 km (0.071 R)
• M12: 6,411,914 km (0.083 R)
• M13: 7,995,557 km (0.057 R)
• M14: 8,589,012 km (0.081 R)
• M15: 9,630,213 km (0.054 R)
• M16: 10,342,598 km (0.105 R)
• M17: 10,962,682 km (0.069 R)
• M18: 11,346,550 km (0.061 R)
• M19: 13,547,434 km (0.056 R)
• M20: 18,414,750 km (0.098 R)
• M21: 22,784,952 km (0.111 R)

Planet 10 - Gas Giant

Semi-Major Axis: 8.47 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 563

Radius: 12.6

Gravity: 3.55 G

Time & Orbit

Eccentricity (e): 0.188

Orbit Range: 6.88 AU - 10.06 AU

Year: 9004 Days

Day: 13.8 Hours

Environment

Temp: -175 °C

Axial Tilt: 31.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 41,864,859 km

• M1: 156,779 km (0.111 R)
• M2: 559,795 km (0.087 R)
• M3: 1,072,318 km (0.094 R)
• M4: 2,070,435 km (0.116 R)
• M5: 2,707,721 km (0.109 R)
• M6: 3,159,357 km (0.094 R)
• M7: 3,637,323 km (0.059 R)
• M8: 4,798,202 km (0.103 R)
• M9: 5,496,375 km (0.096 R)
• M10: 8,506,733 km (0.096 R)
• M11: 13,329,021 km (0.11 R)
• M12: 16,921,165 km (0.109 R)
• M13: 19,421,244 km (0.098 R)
• M14: 19,949,325 km (0.107 R)
• M15: 22,404,376 km (0.092 R)
• M16: 23,576,475 km (0.119 R)
• M17: 24,965,641 km (0.087 R)
• M18: 26,134,000 km (0.077 R)
• M19: 31,483,321 km (0.093 R)
• M20: 33,059,783 km (0.105 R)
• M21: 34,468,247 km (0.099 R)
• M22: 39,894,760 km (0.085 R)

Kuiper Belt

Range: 30 - 53 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 201 - 14,614 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit