🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.31 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.62 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.79

Radius: 1.26

Gravity: 1.13 G

Time & Orbit

Eccentricity (e): 0.18

Orbit Range: 0.51 AU - 0.73 AU

Year: 180 Days

Day: 16.3 Hours

Environment

Temp: 132 °C

Axial Tilt: 16 °

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: 4.52

Radius: 1.83

Gravity: 1.35 G

Time & Orbit

Eccentricity (e): 0.035

Orbit Range: 0.83 AU - 0.89 AU

Year: 294 Days

Day: 21.5 Hours

Environment

Temp: 72 °C

Axial Tilt: 41.9 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Satellites (1)

Outer Limit: 57,166,922 km

• M1: 121,922 km (0.11 R)

Planet 3 - Terrestrial

Semi-Major Axis: 1.08 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.41

Radius: 1.63

Gravity: 1.28 G

Time & Orbit

Eccentricity (e): 0.03

Orbit Range: 1.05 AU - 1.11 AU

Year: 414 Days

Day: 27.4 Hours

Environment

Temp: 5 °C

Axial Tilt: 9.7 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Satellites (1)

Outer Limit: 57,166,922 km

• M1: 649,554 km (0.104 R)

Planet 4 - Terrestrial

Semi-Major Axis: 1.24 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.09

Radius: 1.57

Gravity: 1.25 G

Time & Orbit

Eccentricity (e): 0.159

Orbit Range: 1.04 AU - 1.44 AU

Year: 509 Days

Day: 39 Hours

Environment

Temp: -17 °C

Axial Tilt: 21.1 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Planet 5 - Terrestrial

Semi-Major Axis: 1.91 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.87

Radius: 1.28

Gravity: 1.14 G

Time & Orbit

Eccentricity (e): 0.116

Orbit Range: 1.69 AU - 2.13 AU

Year: 974 Days

Day: 42.8 Hours

Environment

Temp: -75 °C

Axial Tilt: 9.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 6 - Terrestrial

Semi-Major Axis: 4.27 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.6

Radius: 0.82

Gravity: 0.89 G

Time & Orbit

Eccentricity (e): 0.05

Orbit Range: 4.06 AU - 4.48 AU

Year: 3256 Days

Day: 35.3 Hours

Environment

Temp: -127 °C

Axial Tilt: 12.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 57,166,922 km

• M1: 306,227 km (0.103 R)

Asteroid Belt

Center: 9.35 AU

Composition

Type: Far Outer (Icy/Cometary)

A dense region of planetesimals and debris.

Boundary

Planet 7 - Ice Giant

Semi-Major Axis: 14.43 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 284.1

Radius: 6.1

Gravity: 7.64 G

Time & Orbit

Eccentricity (e): 0.067

Orbit Range: 13.46 AU - 15.4 AU

Year: 20224 Days

Day: 20.2 Hours

Environment

Temp: -189 °C

Axial Tilt: 46.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (27)

Outer Limit: 57,166,922 km

• M1: 75,846 km (0.068 R)
• M2: 268,528 km (0.116 R)
• M3: 612,154 km (0.117 R)
• M4: 1,150,408 km (0.087 R)
• M5: 1,383,631 km (0.117 R)
• M6: 2,035,728 km (0.085 R)
• M7: 2,806,606 km (0.087 R)
• M8: 3,488,622 km (0.096 R)
• M9: 4,039,442 km (0.119 R)
• M10: 5,382,980 km (0.098 R)
• M11: 10,048,339 km (0.096 R)
• M12: 10,986,168 km (0.096 R)
• M13: 11,564,364 km (0.042 R)
• M14: 13,162,369 km (0.117 R)
• M15: 14,693,952 km (0.107 R)
• M16: 18,345,785 km (0.105 R)
• M17: 19,995,700 km (0.112 R)
• M18: 23,682,689 km (0.087 R)
• M19: 23,969,020 km (0.07 R)
• M20: 24,940,059 km (0.118 R)
• M21: 29,857,940 km (0.064 R)
• M22: 34,766,994 km (0.083 R)
• M23: 39,917,649 km (0.096 R)
• M24: 45,554,496 km (0.032 R)
• M25: 46,443,257 km (0.084 R)
• M26: 48,408,674 km (0.041 R)
• M27: 52,504,365 km (0.083 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: 460 - 16,130 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit