🌌 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: 1.81

Radius: 1.27

Gravity: 1.12 G

Time & Orbit

Eccentricity (e): 0.181

Orbit Range: 0.45 AU - 0.65 AU

Year: 148 Days

Day: 37.7 Hours

Environment

Temp: 245 °C

Axial Tilt: 11.8 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 0.65 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.31

Radius: 0.63

Gravity: 0.78 G

Time & Orbit

Eccentricity (e): 0.028

Orbit Range: 0.63 AU - 0.67 AU

Year: 190 Days

Day: 12.6 Hours

Environment

Temp: 210 °C

Axial Tilt: 34.2 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 3 - Terrestrial

Semi-Major Axis: 0.9 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.17

Radius: 1.36

Gravity: 1.17 G

Time & Orbit

Eccentricity (e): 0.161

Orbit Range: 0.76 AU - 1.04 AU

Year: 310 Days

Day: 22.5 Hours

Environment

Temp: 134 °C

Axial Tilt: 33 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Satellites (1)

Outer Limit: 33,319,145 km

• M1: 54,753 km (0.063 R)

Planet 4 - Terrestrial

Semi-Major Axis: 1.03 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.87

Radius: 1.72

Gravity: 1.31 G

Time & Orbit

Eccentricity (e): 0.003

Orbit Range: 1.03 AU - 1.03 AU

Year: 380 Days

Day: 19.5 Hours

Environment

Temp: 13 °C

Axial Tilt: 26.2 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Satellites (1)

Outer Limit: 33,319,145 km

• M1: 246,836 km (0.115 R)

Planet 5 - Terrestrial

Semi-Major Axis: 1.61 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.28

Radius: 1.1

Gravity: 1.06 G

Time & Orbit

Eccentricity (e): 0.061

Orbit Range: 1.51 AU - 1.71 AU

Year: 742 Days

Day: 47.6 Hours

Environment

Temp: -32 °C

Axial Tilt: 8.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 33,319,145 km

• M1: 194,926 km (0.057 R)

Planet 6 - Terrestrial

Semi-Major Axis: 1.69 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.44

Radius: 1.64

Gravity: 1.28 G

Time & Orbit

Eccentricity (e): 0.026

Orbit Range: 1.65 AU - 1.73 AU

Year: 798 Days

Day: 16.2 Hours

Environment

Temp: -54 °C

Axial Tilt: 2.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 7 - Terrestrial

Semi-Major Axis: 3.5 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.14

Radius: 0.46

Gravity: 0.66 G

Time & Orbit

Eccentricity (e): 0.049

Orbit Range: 3.33 AU - 3.67 AU

Year: 2380 Days

Day: 22.7 Hours

Environment

Temp: -112 °C

Axial Tilt: 9.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 8 - Terrestrial

Semi-Major Axis: 3.57 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.86

Radius: 1.88

Gravity: 1.38 G

Time & Orbit

Eccentricity (e): 0.015

Orbit Range: 3.52 AU - 3.62 AU

Year: 2451 Days

Day: 16 Hours

Environment

Temp: -109 °C

Axial Tilt: 35.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 33,319,145 km

• M1: 1,447,359 km (0.12 R)
• M2: 1,652,009 km (0.072 R)

Planet 9 - Gas Giant

Semi-Major Axis: 5.94 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 831.1

Radius: 13.3

Gravity: 4.7 G

Time & Orbit

Eccentricity (e): 0.136

Orbit Range: 5.13 AU - 6.75 AU

Year: 5261 Days

Day: 13.1 Hours

Environment

Temp: -150 °C

Axial Tilt: 7.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 33,319,145 km

• M1: 167,101 km (0.115 R)
• M2: 641,176 km (0.081 R)
• M3: 1,087,726 km (0.084 R)
• M4: 2,319,216 km (0.119 R)
• M5: 3,146,492 km (0.091 R)
• M6: 3,763,583 km (0.116 R)
• M7: 4,641,274 km (0.071 R)
• M8: 5,129,262 km (0.029 R)
• M9: 6,113,317 km (0.057 R)
• M10: 7,184,288 km (0.117 R)
• M11: 11,981,443 km (0.074 R)
• M12: 13,819,103 km (0.074 R)
• M13: 16,141,909 km (0.072 R)
• M14: 17,981,215 km (0.109 R)
• M15: 19,190,864 km (0.097 R)
• M16: 19,956,506 km (0.099 R)
• M17: 20,597,832 km (0.098 R)
• M18: 21,033,161 km (0.053 R)
• M19: 24,013,600 km (0.099 R)
• M20: 26,575,613 km (0.06 R)
• M21: 29,223,645 km (0.091 R)
• M22: 31,083,745 km (0.063 R)
• M23: 31,753,046 km (0.117 R)

Kuiper Belt

Range: 30.2 - 46.2 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 453 - 16,752 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit