🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.33 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.65 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.33

Radius: 1.4

Gravity: 1.19 G

Time & Orbit

Eccentricity (e): 0.129

Orbit Range: 0.57 AU - 0.73 AU

Year: 201 Days

Day: 34.5 Hours

Environment

Temp: 114 °C

Axial Tilt: 14.9 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 0.74 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.43

Radius: 1.15

Gravity: 1.08 G

Time & Orbit

Eccentricity (e): 0.08

Orbit Range: 0.68 AU - 0.8 AU

Year: 244 Days

Day: 45.5 Hours

Environment

Temp: 95 °C

Axial Tilt: 26.4 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Satellites (1)

Outer Limit: 28,179,456 km

• M1: 36,801 km (0.103 R)

Planet 3 - Terrestrial

Semi-Major Axis: 0.78 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.84

Radius: 1.71

Gravity: 1.31 G

Time & Orbit

Eccentricity (e): 0.092

Orbit Range: 0.71 AU - 0.85 AU

Year: 264 Days

Day: 45.6 Hours

Environment

Temp: 98 °C

Axial Tilt: 41.4 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Satellites (1)

Outer Limit: 28,179,456 km

• M1: 240,703 km (0.106 R)

Planet 4 - Terrestrial

Semi-Major Axis: 1.24 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.88

Radius: 1.72

Gravity: 1.31 G

Time & Orbit

Eccentricity (e): 0.022

Orbit Range: 1.21 AU - 1.27 AU

Year: 529 Days

Day: 29.1 Hours

Environment

Temp: -42 °C

Axial Tilt: 28.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 5 - Terrestrial

Semi-Major Axis: 1.56 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.32

Radius: 1.12

Gravity: 1.05 G

Time & Orbit

Eccentricity (e): 0.025

Orbit Range: 1.52 AU - 1.6 AU

Year: 746 Days

Day: 17.9 Hours

Environment

Temp: -58 °C

Axial Tilt: 31.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 28,179,456 km

• M1: 674,986 km (0.103 R)

Planet 6 - Terrestrial

Semi-Major Axis: 2.08 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.69

Radius: 0.86

Gravity: 0.93 G

Time & Orbit

Eccentricity (e): 0.147

Orbit Range: 1.77 AU - 2.39 AU

Year: 1149 Days

Day: 30.3 Hours

Environment

Temp: -80 °C

Axial Tilt: 47.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 7 - Terrestrial

Semi-Major Axis: 2.83 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.49

Radius: 0.75

Gravity: 0.87 G

Time & Orbit

Eccentricity (e): 0.178

Orbit Range: 2.33 AU - 3.33 AU

Year: 1823 Days

Day: 39.2 Hours

Environment

Temp: -102 °C

Axial Tilt: 5.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 8 - Terrestrial

Semi-Major Axis: 3.29 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.58

Radius: 1.84

Gravity: 1.35 G

Time & Orbit

Eccentricity (e): 0.059

Orbit Range: 3.1 AU - 3.48 AU

Year: 2285 Days

Day: 17.6 Hours

Environment

Temp: -118 °C

Axial Tilt: 25.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Asteroid Belt

Center: 3.75 AU

Composition

Type: Main (Rocky/Icy Mix)

A dense region of planetesimals and debris.

Boundary

Planet 9 - Gas Giant

Semi-Major Axis: 4.2 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 307.4

Radius: 11.5

Gravity: 2.32 G

Time & Orbit

Eccentricity (e): 0.149

Orbit Range: 3.57 AU - 4.83 AU

Year: 3296 Days

Day: 7.3 Hours

Environment

Temp: -135 °C

Axial Tilt: 19.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 28,179,456 km

• M1: 143,464 km (0.038 R)
• M2: 602,580 km (0.079 R)
• M3: 1,080,994 km (0.114 R)
• M4: 1,495,081 km (0.073 R)
• M5: 2,087,638 km (0.096 R)
• M6: 3,393,029 km (0.118 R)
• M7: 3,988,728 km (0.112 R)
• M8: 4,868,364 km (0.068 R)
• M9: 5,773,879 km (0.114 R)
• M10: 6,411,316 km (0.112 R)
• M11: 7,151,676 km (0.101 R)
• M12: 8,672,787 km (0.108 R)
• M13: 10,621,000 km (0.096 R)
• M14: 12,676,774 km (0.1 R)
• M15: 13,186,604 km (0.063 R)
• M16: 14,567,093 km (0.081 R)
• M17: 15,894,774 km (0.062 R)
• M18: 16,338,331 km (0.111 R)
• M19: 16,942,408 km (0.051 R)

Planet 10 - Gas Giant

Semi-Major Axis: 5.66 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 523.6

Radius: 9.6

Gravity: 5.68 G

Time & Orbit

Eccentricity (e): 0.019

Orbit Range: 5.55 AU - 5.77 AU

Year: 5156 Days

Day: 10.3 Hours

Environment

Temp: -158 °C

Axial Tilt: 20.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 28,179,456 km

• M1: 119,379 km (0.064 R)
• M2: 469,737 km (0.092 R)
• M3: 971,638 km (0.06 R)
• M4: 1,291,778 km (0.067 R)
• M5: 1,611,019 km (0.063 R)
• M6: 2,592,082 km (0.116 R)
• M7: 3,690,430 km (0.069 R)
• M8: 4,942,414 km (0.095 R)
• M9: 5,622,636 km (0.041 R)
• M10: 6,302,409 km (0.111 R)
• M11: 7,069,098 km (0.09 R)
• M12: 7,509,664 km (0.067 R)
• M13: 8,004,533 km (0.075 R)
• M14: 8,483,396 km (0.107 R)
• M15: 9,217,622 km (0.03 R)
• M16: 10,549,193 km (0.11 R)
• M17: 12,291,859 km (0.113 R)
• M18: 12,731,078 km (0.101 R)
• M19: 13,333,209 km (0.116 R)
• M20: 13,849,322 km (0.1 R)
• M21: 15,932,921 km (0.055 R)
• M22: 18,280,261 km (0.095 R)
• M23: 19,437,700 km (0.101 R)
• M24: 20,101,615 km (0.105 R)
• M25: 28,179,452 km (0.096 R)

Kuiper Belt

Range: 30 - 56 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 188 - 14,406 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit