🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.39 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.78 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.96

Radius: 0.98

Gravity: 1 G

Time & Orbit

Eccentricity (e): 0.108

Orbit Range: 0.7 AU - 0.86 AU

Year: 240 Days

Day: 42.8 Hours

Environment

Temp: 135 °C

Axial Tilt: 43.5 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 0.86 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.47

Radius: 1.82

Gravity: 1.35 G

Time & Orbit

Eccentricity (e): 0.139

Orbit Range: 0.74 AU - 0.98 AU

Year: 278 Days

Day: 16.4 Hours

Environment

Temp: 182 °C

Axial Tilt: 8.1 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Satellites (1)

Outer Limit: 48,680,143 km

• M1: 720,912 km (0.103 R)

Planet 3 - Terrestrial

Semi-Major Axis: 1.31 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.55

Radius: 1.19

Gravity: 1.09 G

Time & Orbit

Eccentricity (e): 0.109

Orbit Range: 1.17 AU - 1.45 AU

Year: 522 Days

Day: 39.5 Hours

Environment

Temp: 8 °C

Axial Tilt: 38.9 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Planet 4 - Terrestrial

Semi-Major Axis: 1.39 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.04

Radius: 1.56

Gravity: 1.25 G

Time & Orbit

Eccentricity (e): 0.033

Orbit Range: 1.34 AU - 1.44 AU

Year: 571 Days

Day: 38.6 Hours

Environment

Temp: 20 °C

Axial Tilt: 84.3 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Planet 5 - Terrestrial

Semi-Major Axis: 1.82 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.68

Radius: 1.23

Gravity: 1.11 G

Time & Orbit

Eccentricity (e): 0.18

Orbit Range: 1.49 AU - 2.15 AU

Year: 855 Days

Day: 30.3 Hours

Environment

Temp: -46 °C

Axial Tilt: 119.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 48,680,143 km

• M1: 61,784 km (0.105 R)

Planet 6 - Terrestrial

Semi-Major Axis: 2.3 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.75

Radius: 1.86

Gravity: 1.37 G

Time & Orbit

Eccentricity (e): 0.242

Orbit Range: 1.74 AU - 2.86 AU

Year: 1215 Days

Day: 14.1 Hours

Environment

Temp: -72 °C

Axial Tilt: 15.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 48,680,143 km

• M1: 274,512 km (0.112 R)

Planet 7 - Terrestrial

Semi-Major Axis: 3.12 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.04

Radius: 1.33

Gravity: 1.15 G

Time & Orbit

Eccentricity (e): 0.161

Orbit Range: 2.62 AU - 3.62 AU

Year: 1919 Days

Day: 35 Hours

Environment

Temp: -98 °C

Axial Tilt: 6.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 8 - Terrestrial

Semi-Major Axis: 3.25 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.88

Radius: 1.29

Gravity: 1.13 G

Time & Orbit

Eccentricity (e): 0.105

Orbit Range: 2.91 AU - 3.59 AU

Year: 2040 Days

Day: 15.3 Hours

Environment

Temp: -85 °C

Axial Tilt: 4.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Asteroid Belt

Center: 11.97 AU

Composition

Type: Far Outer (Icy/Cometary)

A dense region of planetesimals and debris.

Boundary

Planet 9 - Ice Giant

Semi-Major Axis: 20.69 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 66.8

Radius: 3.6

Gravity: 5.15 G

Time & Orbit

Eccentricity (e): 0.202

Orbit Range: 16.51 AU - 24.87 AU

Year: 32774 Days

Day: 24.9 Hours

Environment

Temp: -192 °C

Axial Tilt: 27.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 48,680,143 km

• M1: 46,974 km (0.055 R)
• M2: 229,483 km (0.081 R)
• M3: 368,011 km (0.111 R)
• M4: 621,280 km (0.074 R)
• M5: 860,786 km (0.098 R)
• M6: 1,170,603 km (0.117 R)
• M7: 1,318,855 km (0.081 R)
• M8: 3,495,803 km (0.034 R)
• M9: 4,273,114 km (0.092 R)
• M10: 4,778,754 km (0.062 R)
• M11: 7,163,195 km (0.08 R)
• M12: 8,092,497 km (0.12 R)
• M13: 9,682,124 km (0.085 R)
• M14: 11,524,122 km (0.117 R)
• M15: 12,380,421 km (0.09 R)
• M16: 12,854,047 km (0.038 R)
• M17: 13,034,762 km (0.068 R)
• M18: 13,463,060 km (0.028 R)
• M19: 15,337,222 km (0.1 R)
• M20: 18,502,115 km (0.092 R)
• M21: 23,036,127 km (0.08 R)
• M22: 27,753,397 km (0.038 R)
• M23: 30,230,289 km (0.104 R)
• M24: 40,311,689 km (0.1 R)
• M25: 42,672,045 km (0.118 R)

Kuiper Belt

Range: 31.5 - 52.5 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 241 - 13,869 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit