🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.3 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.59 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.54

Radius: 0.78

Gravity: 0.89 G

Time & Orbit

Eccentricity (e): 0.154

Orbit Range: 0.5 AU - 0.68 AU

Year: 195 Days

Day: 29.5 Hours

Environment

Temp: 17 °C

Axial Tilt: 24.8 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Planet 2 - Terrestrial

Semi-Major Axis: 1.06 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.06

Radius: 1.02

Gravity: 1.02 G

Time & Orbit

Eccentricity (e): 0.149

Orbit Range: 0.9 AU - 1.22 AU

Year: 470 Days

Day: 33.4 Hours

Environment

Temp: -69 °C

Axial Tilt: 7.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Terrestrial

Semi-Major Axis: 1.23 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.01

Radius: 1.32

Gravity: 1.15 G

Time & Orbit

Eccentricity (e): 0.222

Orbit Range: 0.96 AU - 1.5 AU

Year: 587 Days

Day: 43.8 Hours

Environment

Temp: -79 °C

Axial Tilt: 17.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 4 - Terrestrial

Semi-Major Axis: 1.51 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.67

Radius: 0.85

Gravity: 0.93 G

Time & Orbit

Eccentricity (e): 0.193

Orbit Range: 1.22 AU - 1.8 AU

Year: 799 Days

Day: 32.2 Hours

Environment

Temp: -90 °C

Axial Tilt: 19.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 5 - Terrestrial

Semi-Major Axis: 1.75 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.22

Radius: 1.6

Gravity: 1.26 G

Time & Orbit

Eccentricity (e): 0.239

Orbit Range: 1.33 AU - 2.17 AU

Year: 997 Days

Day: 36.4 Hours

Environment

Temp: -102 °C

Axial Tilt: 5.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 22,458,433 km

• M1: 565,929 km (0.067 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.72 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 435.8

Radius: 9.1

Gravity: 5.26 G

Time & Orbit

Eccentricity (e): 0.23

Orbit Range: 2.09 AU - 3.35 AU

Year: 1931 Days

Day: 6.4 Hours

Environment

Temp: -145 °C

Axial Tilt: 36.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 22,458,433 km

• M1: 113,246 km (0.06 R)
• M2: 508,334 km (0.099 R)
• M3: 1,013,825 km (0.089 R)
• M4: 1,495,380 km (0.088 R)
• M5: 2,146,729 km (0.113 R)
• M6: 2,512,047 km (0.076 R)
• M7: 3,512,408 km (0.073 R)
• M8: 4,022,388 km (0.081 R)
• M9: 4,503,644 km (0.116 R)
• M10: 4,981,459 km (0.102 R)
• M11: 5,514,776 km (0.061 R)
• M12: 7,755,303 km (0.089 R)
• M13: 8,650,646 km (0.11 R)
• M14: 11,350,290 km (0.078 R)
• M15: 12,502,792 km (0.075 R)
• M16: 13,487,744 km (0.116 R)

Planet 7 - Gas Giant

Semi-Major Axis: 4.03 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 379.1

Radius: 10.1

Gravity: 3.72 G

Time & Orbit

Eccentricity (e): 0.168

Orbit Range: 3.35 AU - 4.71 AU

Year: 3482 Days

Day: 7.7 Hours

Environment

Temp: -152 °C

Axial Tilt: 41.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 22,458,433 km

• M1: 125,662 km (0.089 R)
• M2: 759,808 km (0.068 R)
• M3: 1,196,035 km (0.059 R)
• M4: 1,559,558 km (0.113 R)
• M5: 1,877,453 km (0.083 R)
• M6: 2,306,350 km (0.115 R)
• M7: 4,060,236 km (0.057 R)
• M8: 4,390,249 km (0.071 R)
• M9: 5,946,515 km (0.118 R)
• M10: 6,373,617 km (0.094 R)
• M11: 7,259,386 km (0.073 R)
• M12: 8,000,045 km (0.083 R)
• M13: 10,757,732 km (0.096 R)
• M14: 11,678,807 km (0.064 R)
• M15: 12,095,287 km (0.104 R)
• M16: 12,521,791 km (0.045 R)
• M17: 12,914,186 km (0.106 R)
• M18: 14,140,739 km (0.112 R)
• M19: 14,951,858 km (0.094 R)
• M20: 17,248,634 km (0.102 R)
• M21: 17,680,224 km (0.078 R)
• M22: 19,190,564 km (0.119 R)

Planet 8 - Gas Giant

Semi-Major Axis: 4.1 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 106.3

Radius: 14.6

Gravity: 0.5 G

Time & Orbit

Eccentricity (e): 0.234

Orbit Range: 3.14 AU - 5.06 AU

Year: 3574 Days

Day: 11.4 Hours

Environment

Temp: -154 °C

Axial Tilt: 14.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 22,458,433 km

• M1: 181,612 km (0.094 R)
• M2: 975,827 km (0.112 R)
• M3: 1,509,443 km (0.078 R)
• M4: 2,367,985 km (0.104 R)
• M5: 3,394,824 km (0.093 R)
• M6: 5,136,592 km (0.1 R)
• M7: 5,840,301 km (0.088 R)
• M8: 6,368,381 km (0.066 R)
• M9: 7,600,769 km (0.115 R)
• M10: 8,344,868 km (0.108 R)
• M11: 12,666,751 km (0.071 R)

Planet 9 - Gas Giant

Semi-Major Axis: 4.33 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 468.4

Radius: 9.1

Gravity: 5.66 G

Time & Orbit

Eccentricity (e): 0.204

Orbit Range: 3.45 AU - 5.21 AU

Year: 3878 Days

Day: 5.2 Hours

Environment

Temp: -157 °C

Axial Tilt: 15.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 22,458,433 km

• M1: 113,545 km (0.084 R)
• M2: 425,905 km (0.112 R)
• M3: 753,375 km (0.12 R)
• M4: 1,199,775 km (0.093 R)
• M5: 1,608,626 km (0.116 R)
• M6: 2,016,579 km (0.108 R)
• M7: 2,553,636 km (0.114 R)
• M8: 3,439,853 km (0.038 R)
• M9: 5,310,874 km (0.108 R)
• M10: 5,647,469 km (0.093 R)
• M11: 5,970,900 km (0.108 R)
• M12: 7,264,024 km (0.116 R)
• M13: 8,453,476 km (0.079 R)
• M14: 9,502,457 km (0.081 R)
• M15: 10,274,831 km (0.03 R)
• M16: 10,595,269 km (0.076 R)
• M17: 12,569,363 km (0.103 R)
• M18: 13,168,951 km (0.114 R)
• M19: 16,951,982 km (0.09 R)
• M20: 20,633,436 km (0.097 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: 276 - 17,490 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit