🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.27 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.53 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.7

Radius: 0.87

Gravity: 0.92 G

Time & Orbit

Eccentricity (e): 0.133

Orbit Range: 0.46 AU - 0.6 AU

Year: 142 Days

Day: 47.2 Hours

Environment

Temp: 204 °C

Axial Tilt: 15.1 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Satellites (1)

Outer Limit: 78,837,898 km

• M1: 20,345 km (0.097 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.55 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.53

Radius: 1.19

Gravity: 1.08 G

Time & Orbit

Eccentricity (e): 0.03

Orbit Range: 0.53 AU - 0.57 AU

Year: 150 Days

Day: 32.6 Hours

Environment

Temp: 185 °C

Axial Tilt: 17.8 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 3 - Terrestrial

Semi-Major Axis: 0.57 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.23

Radius: 1.09

Gravity: 1.04 G

Time & Orbit

Eccentricity (e): 0.22

Orbit Range: 0.44 AU - 0.7 AU

Year: 159 Days

Day: 28.2 Hours

Environment

Temp: 193 °C

Axial Tilt: 16.5 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 4 - Terrestrial

Semi-Major Axis: 0.72 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.34

Radius: 1.8

Gravity: 1.34 G

Time & Orbit

Eccentricity (e): 0.051

Orbit Range: 0.68 AU - 0.76 AU

Year: 225 Days

Day: 20.3 Hours

Environment

Temp: 165 °C

Axial Tilt: 5.8 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 5 - Terrestrial

Semi-Major Axis: 1.08 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.27

Radius: 1.61

Gravity: 1.26 G

Time & Orbit

Eccentricity (e): 0.028

Orbit Range: 1.05 AU - 1.11 AU

Year: 414 Days

Day: 38.9 Hours

Environment

Temp: 21 °C

Axial Tilt: 28.5 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Satellites (2)

Outer Limit: 78,837,898 km

• M1: 39,943 km (0.118 R)
• M2: 885,021 km (0.103 R)

Planet 6 - Terrestrial

Semi-Major Axis: 1.49 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.33

Radius: 1.4

Gravity: 1.19 G

Time & Orbit

Eccentricity (e): 0.19

Orbit Range: 1.21 AU - 1.77 AU

Year: 671 Days

Day: 33 Hours

Environment

Temp: -31 °C

Axial Tilt: 39.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 7 - Gas Giant

Semi-Major Axis: 4.79 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 889.8

Radius: 10.9

Gravity: 7.49 G

Time & Orbit

Eccentricity (e): 0.165

Orbit Range: 4 AU - 5.58 AU

Year: 3868 Days

Day: 8 Hours

Environment

Temp: -129 °C

Axial Tilt: 18.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (27)

Outer Limit: 78,837,898 km

• M1: 136,284 km (0.117 R)
• M2: 661,372 km (0.104 R)
• M3: 1,092,812 km (0.119 R)
• M4: 1,446,163 km (0.103 R)
• M5: 1,838,259 km (0.114 R)
• M6: 2,241,574 km (0.109 R)
• M7: 2,755,294 km (0.091 R)
• M8: 3,268,115 km (0.115 R)
• M9: 3,736,207 km (0.033 R)
• M10: 4,486,141 km (0.06 R)
• M11: 5,092,312 km (0.097 R)
• M12: 7,176,509 km (0.112 R)
• M13: 8,042,681 km (0.109 R)
• M14: 8,408,148 km (0.058 R)
• M15: 9,211,938 km (0.073 R)
• M16: 9,652,952 km (0.076 R)
• M17: 12,699,962 km (0.109 R)
• M18: 13,500,609 km (0.052 R)
• M19: 14,175,745 km (0.119 R)
• M20: 14,927,624 km (0.088 R)
• M21: 15,593,184 km (0.108 R)
• M22: 16,569,759 km (0.073 R)
• M23: 17,831,917 km (0.062 R)
• M24: 18,392,011 km (0.038 R)
• M25: 19,157,055 km (0.096 R)
• M26: 22,215,882 km (0.09 R)
• M27: 24,963,696 km (0.091 R)

Planet 8 - Ice Giant

Semi-Major Axis: 14.48 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 203.7

Radius: 5.8

Gravity: 6.06 G

Time & Orbit

Eccentricity (e): 0.072

Orbit Range: 13.44 AU - 15.52 AU

Year: 20330 Days

Day: 24.9 Hours

Environment

Temp: -185 °C

Axial Tilt: 150.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 78,837,898 km

• M1: 73,303 km (0.099 R)
• M2: 266,733 km (0.115 R)
• M3: 452,234 km (0.104 R)
• M4: 633,098 km (0.037 R)
• M5: 1,982,471 km (0.083 R)
• M6: 2,346,592 km (0.081 R)
• M7: 3,255,998 km (0.106 R)
• M8: 4,744,197 km (0.09 R)
• M9: 7,576,384 km (0.077 R)
• M10: 7,791,955 km (0.09 R)
• M11: 13,830,174 km (0.083 R)
• M12: 15,700,745 km (0.118 R)
• M13: 20,596,934 km (0.103 R)
• M14: 22,225,606 km (0.113 R)
• M15: 22,579,106 km (0.074 R)
• M16: 27,118,653 km (0.058 R)
• M17: 30,569,577 km (0.075 R)
• M18: 32,230,712 km (0.074 R)
• M19: 35,611,175 km (0.079 R)
• M20: 40,257,685 km (0.087 R)

Planet 9 - Ice Giant

Semi-Major Axis: 14.59 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 720.9

Radius: 3.6

Gravity: 55.63 G

Time & Orbit

Eccentricity (e): 0.239

Orbit Range: 11.1 AU - 18.08 AU

Year: 20562 Days

Day: 24.6 Hours

Environment

Temp: -188 °C

Axial Tilt: 32.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 78,837,898 km

• M1: 44,730 km (0.112 R)
• M2: 327,021 km (0.079 R)
• M3: 861,085 km (0.066 R)
• M4: 1,147,715 km (0.102 R)
• M5: 2,088,237 km (0.09 R)
• M6: 2,650,874 km (0.079 R)
• M7: 4,035,851 km (0.08 R)
• M8: 5,125,373 km (0.112 R)
• M9: 5,356,950 km (0.088 R)
• M10: 6,848,591 km (0.074 R)
• M11: 8,435,974 km (0.115 R)
• M12: 10,807,249 km (0.079 R)
• M13: 11,709,025 km (0.073 R)
• M14: 18,732,645 km (0.064 R)
• M15: 28,966,636 km (0.084 R)
• M16: 29,823,233 km (0.087 R)
• M17: 37,006,474 km (0.11 R)
• M18: 37,580,182 km (0.103 R)
• M19: 39,337,059 km (0.091 R)
• M20: 39,934,703 km (0.056 R)
• M21: 66,328,106 km (0.084 R)

Kuiper Belt

Range: 30 - 59 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 412 - 17,552 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit