🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.29 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.58 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.71

Radius: 1.86

Gravity: 1.36 G

Time & Orbit

Eccentricity (e): 0.168

Orbit Range: 0.48 AU - 0.68 AU

Year: 163 Days

Day: 33.1 Hours

Environment

Temp: 173 °C

Axial Tilt: 20.9 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Satellites (1)

Outer Limit: 37,454,091 km

• M1: 316,998 km (0.119 R)

Planet 2 - Terrestrial

Semi-Major Axis: 1.09 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.9

Radius: 1.72

Gravity: 1.32 G

Time & Orbit

Eccentricity (e): 0.098

Orbit Range: 0.98 AU - 1.2 AU

Year: 420 Days

Day: 19.7 Hours

Environment

Temp: 25 °C

Axial Tilt: 4.1 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Planet 3 - Terrestrial

Semi-Major Axis: 1.1 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.9

Radius: 0.96

Gravity: 0.98 G

Time & Orbit

Eccentricity (e): 0.137

Orbit Range: 0.95 AU - 1.25 AU

Year: 426 Days

Day: 24 Hours

Environment

Temp: 24 °C

Axial Tilt: 18 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Satellites (1)

Outer Limit: 37,454,091 km

• M1: 224,397 km (0.096 R)

Planet 4 - Terrestrial

Semi-Major Axis: 2.2 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.29

Radius: 1.61

Gravity: 1.27 G

Time & Orbit

Eccentricity (e): 0.17

Orbit Range: 1.83 AU - 2.57 AU

Year: 1204 Days

Day: 31.8 Hours

Environment

Temp: -87 °C

Axial Tilt: 42.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 37,454,091 km

• M1: 173,833 km (0.059 R)

Planet 5 - Terrestrial

Semi-Major Axis: 3.67 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.47

Radius: 1.64

Gravity: 1.29 G

Time & Orbit

Eccentricity (e): 0.168

Orbit Range: 3.05 AU - 4.29 AU

Year: 2594 Days

Day: 41.4 Hours

Environment

Temp: -116 °C

Axial Tilt: 2.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 6 - Terrestrial

Semi-Major Axis: 4.16 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.46

Radius: 1.43

Gravity: 1.2 G

Time & Orbit

Eccentricity (e): 0.069

Orbit Range: 3.87 AU - 4.45 AU

Year: 3131 Days

Day: 45.2 Hours

Environment

Temp: -122 °C

Axial Tilt: 26.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 7 - Terrestrial

Semi-Major Axis: 4.5 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.34

Radius: 0.65

Gravity: 0.8 G

Time & Orbit

Eccentricity (e): 0.194

Orbit Range: 3.63 AU - 5.37 AU

Year: 3522 Days

Day: 41 Hours

Environment

Temp: -139 °C

Axial Tilt: 29.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 8 - Gas Giant

Semi-Major Axis: 8.53 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 386.8

Radius: 9.5

Gravity: 4.29 G

Time & Orbit

Eccentricity (e): 0.143

Orbit Range: 7.31 AU - 9.75 AU

Year: 9192 Days

Day: 14.1 Hours

Environment

Temp: -174 °C

Axial Tilt: 8.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 37,454,091 km

• M1: 118,182 km (0.118 R)
• M2: 473,926 km (0.115 R)
• M3: 805,136 km (0.039 R)
• M4: 1,341,594 km (0.095 R)
• M5: 1,774,380 km (0.033 R)
• M6: 2,232,150 km (0.084 R)
• M7: 2,635,316 km (0.045 R)
• M8: 6,128,875 km (0.063 R)
• M9: 8,973,329 km (0.081 R)
• M10: 9,723,114 km (0.093 R)
• M11: 10,803,360 km (0.07 R)
• M12: 15,556,383 km (0.099 R)
• M13: 17,096,942 km (0.088 R)
• M14: 24,282,577 km (0.107 R)
• M15: 29,667,801 km (0.094 R)
• M16: 30,734,583 km (0.071 R)
• M17: 31,726,417 km (0.116 R)
• M18: 33,253,961 km (0.041 R)
• M19: 36,565,160 km (0.114 R)
• M20: 37,342,172 km (0.111 R)

Kuiper Belt

Range: 30 - 49 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 149 - 16,029 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit