🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.42 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.84 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.8

Radius: 1.87

Gravity: 1.37 G

Time & Orbit

Eccentricity (e): 0.114

Orbit Range: 0.74 AU - 0.94 AU

Year: 287 Days

Day: 15.3 Hours

Environment

Temp: 163 °C

Axial Tilt: 25.1 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 0.97 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.14

Radius: 1.05

Gravity: 1.03 G

Time & Orbit

Eccentricity (e): 0

Orbit Range: 0.97 AU - 0.97 AU

Year: 356 Days

Day: 15.7 Hours

Environment

Temp: 11 °C

Axial Tilt: 27.9 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Planet 3 - Terrestrial

Semi-Major Axis: 1.22 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.78

Radius: 1.26

Gravity: 1.12 G

Time & Orbit

Eccentricity (e): 0.012

Orbit Range: 1.21 AU - 1.23 AU

Year: 502 Days

Day: 46 Hours

Environment

Temp: -5 °C

Axial Tilt: 37.6 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Planet 4 - Terrestrial

Semi-Major Axis: 1.53 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.45

Radius: 1.43

Gravity: 1.2 G

Time & Orbit

Eccentricity (e): 0.084

Orbit Range: 1.4 AU - 1.66 AU

Year: 705 Days

Day: 45.9 Hours

Environment

Temp: -44 °C

Axial Tilt: 11.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 5 - Terrestrial

Semi-Major Axis: 1.8 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.4

Radius: 1.42

Gravity: 1.19 G

Time & Orbit

Eccentricity (e): 0.194

Orbit Range: 1.45 AU - 2.15 AU

Year: 900 Days

Day: 31.2 Hours

Environment

Temp: -71 °C

Axial Tilt: 32 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 29,780,011 km

• M1: 359,184 km (0.113 R)

Asteroid Belt

Center: 3.59 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 6 - Gas Giant

Semi-Major Axis: 5.37 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 112.2

Radius: 10.9

Gravity: 0.94 G

Time & Orbit

Eccentricity (e): 0.119

Orbit Range: 4.73 AU - 6.01 AU

Year: 4639 Days

Day: 9.3 Hours

Environment

Temp: -153 °C

Axial Tilt: 111.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 29,780,011 km

• M1: 135,536 km (0.053 R)
• M2: 758,760 km (0.087 R)
• M3: 1,155,344 km (0.09 R)
• M4: 1,712,297 km (0.073 R)
• M5: 2,713,705 km (0.069 R)
• M6: 3,467,379 km (0.094 R)
• M7: 4,374,990 km (0.048 R)
• M8: 5,411,254 km (0.099 R)
• M9: 6,682,387 km (0.098 R)
• M10: 9,771,733 km (0.071 R)
• M11: 12,188,935 km (0.094 R)
• M12: 12,994,071 km (0.083 R)
• M13: 14,180,382 km (0.039 R)

Planet 7 - Gas Giant

Semi-Major Axis: 6.69 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 394.8

Radius: 15

Gravity: 1.75 G

Time & Orbit

Eccentricity (e): 0.116

Orbit Range: 5.91 AU - 7.47 AU

Year: 6451 Days

Day: 14.1 Hours

Environment

Temp: -163 °C

Axial Tilt: 10 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 29,780,011 km

• M1: 186,549 km (0.089 R)
• M2: 1,034,469 km (0.111 R)
• M3: 1,955,543 km (0.092 R)
• M4: 2,707,422 km (0.056 R)
• M5: 3,952,675 km (0.05 R)
• M6: 6,111,223 km (0.071 R)
• M7: 7,376,821 km (0.07 R)
• M8: 11,094,776 km (0.073 R)
• M9: 11,746,275 km (0.1 R)
• M10: 13,024,140 km (0.056 R)
• M11: 14,338,507 km (0.081 R)
• M12: 15,112,227 km (0.04 R)
• M13: 16,089,101 km (0.094 R)
• M14: 19,339,863 km (0.104 R)
• M15: 20,699,409 km (0.066 R)
• M16: 22,782,709 km (0.114 R)
• M17: 25,800,397 km (0.118 R)

Kuiper Belt

Range: 30 - 46 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 296 - 18,794 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit