🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.32 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.63 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.55

Radius: 1.83

Gravity: 1.36 G

Time & Orbit

Eccentricity (e): 0.046

Orbit Range: 0.6 AU - 0.66 AU

Year: 318 Days

Day: 46.5 Hours

Environment

Temp: -137 °C

Axial Tilt: 38.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 50,200,944 km

• M1: 569,968 km (0.077 R)
• M2: 698,472 km (0.096 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.64 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.64

Radius: 1.85

Gravity: 1.36 G

Time & Orbit

Eccentricity (e): 0.25

Orbit Range: 0.48 AU - 0.8 AU

Year: 326 Days

Day: 26.9 Hours

Environment

Temp: -142 °C

Axial Tilt: 41.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 50,200,944 km

• M1: 381,923 km (0.089 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.88 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 26.2

Radius: 9.3

Gravity: 0.3 G

Time & Orbit

Eccentricity (e): 0.197

Orbit Range: 0.71 AU - 1.05 AU

Year: 525 Days

Day: 12.8 Hours

Environment

Temp: -144 °C

Axial Tilt: 1.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 50,200,944 km

• M1: 116,238 km (0.092 R)
• M2: 488,886 km (0.116 R)
• M3: 800,199 km (0.114 R)
• M4: 1,357,451 km (0.11 R)
• M5: 1,671,307 km (0.105 R)
• M6: 2,058,317 km (0.038 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.03 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 168.1

Radius: 8.6

Gravity: 2.27 G

Time & Orbit

Eccentricity (e): 0.249

Orbit Range: 0.77 AU - 1.29 AU

Year: 665 Days

Day: 5.5 Hours

Environment

Temp: -150 °C

Axial Tilt: 31.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 50,200,944 km

• M1: 106,962 km (0.119 R)
• M2: 466,446 km (0.094 R)
• M3: 776,413 km (0.118 R)
• M4: 1,051,673 km (0.115 R)
• M5: 1,648,419 km (0.09 R)
• M6: 2,792,244 km (0.061 R)
• M7: 3,378,518 km (0.098 R)
• M8: 4,223,896 km (0.048 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.06 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 515.5

Radius: 10.1

Gravity: 5.05 G

Time & Orbit

Eccentricity (e): 0.086

Orbit Range: 0.97 AU - 1.15 AU

Year: 694 Days

Day: 12.1 Hours

Environment

Temp: -162 °C

Axial Tilt: 32.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 50,200,944 km

• M1: 125,662 km (0.072 R)
• M2: 532,120 km (0.055 R)
• M3: 997,967 km (0.069 R)
• M4: 1,382,883 km (0.118 R)
• M5: 2,401,046 km (0.093 R)
• M6: 3,748,025 km (0.079 R)
• M7: 4,445,450 km (0.101 R)
• M8: 5,006,891 km (0.081 R)
• M9: 5,669,311 km (0.085 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.16 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 802.8

Radius: 12.8

Gravity: 4.9 G

Time & Orbit

Eccentricity (e): 0.158

Orbit Range: 0.98 AU - 1.34 AU

Year: 794 Days

Day: 6.7 Hours

Environment

Temp: -164 °C

Axial Tilt: 23.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 50,200,944 km

• M1: 159,172 km (0.11 R)
• M2: 601,832 km (0.051 R)
• M3: 1,136,794 km (0.079 R)
• M4: 1,620,743 km (0.077 R)
• M5: 2,073,426 km (0.093 R)
• M6: 3,071,095 km (0.08 R)
• M7: 4,078,487 km (0.077 R)
• M8: 5,313,567 km (0.108 R)
• M9: 5,796,618 km (0.088 R)
• M10: 6,329,785 km (0.074 R)
• M11: 7,237,395 km (0.067 R)
• M12: 7,638,467 km (0.042 R)
• M13: 8,154,430 km (0.047 R)
• M14: 8,958,519 km (0.107 R)

Planet 7 - Gas Giant

Semi-Major Axis: 2.17 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 235.1

Radius: 9

Gravity: 2.9 G

Time & Orbit

Eccentricity (e): 0.171

Orbit Range: 1.8 AU - 2.54 AU

Year: 2032 Days

Day: 5.1 Hours

Environment

Temp: -200 °C

Axial Tilt: 7.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 50,200,944 km

• M1: 131,347 km (0.102 R)
• M2: 575,503 km (0.101 R)
• M3: 2,065,498 km (0.064 R)
• M4: 2,930,473 km (0.101 R)
• M5: 3,985,586 km (0.118 R)
• M6: 5,377,595 km (0.094 R)
• M7: 5,712,245 km (0.041 R)
• M8: 7,547,961 km (0.09 R)
• M9: 8,021,887 km (0.093 R)
• M10: 10,925,581 km (0.115 R)

Planet 8 - Ice Giant

Semi-Major Axis: 8.59 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 307.1

Radius: 5.4

Gravity: 10.53 G

Time & Orbit

Eccentricity (e): 0.189

Orbit Range: 6.97 AU - 10.21 AU

Year: 16007 Days

Day: 16.8 Hours

Environment

Temp: -224 °C

Axial Tilt: 17.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (37)

Outer Limit: 50,200,944 km

• M1: 67,469 km (0.086 R)
• M2: 243,246 km (0.093 R)
• M3: 831,914 km (0.066 R)
• M4: 1,252,284 km (0.102 R)
• M5: 1,575,266 km (0.038 R)
• M6: 1,951,953 km (0.101 R)
• M7: 2,545,258 km (0.11 R)
• M8: 3,348,449 km (0.096 R)
• M9: 4,137,129 km (0.076 R)
• M10: 4,455,324 km (0.076 R)
• M11: 5,893,408 km (0.118 R)
• M12: 7,917,617 km (0.109 R)
• M13: 9,848,925 km (0.104 R)
• M14: 11,335,031 km (0.103 R)
• M15: 12,782,839 km (0.12 R)
• M16: 14,480,475 km (0.099 R)
• M17: 14,810,488 km (0.118 R)
• M18: 17,485,149 km (0.083 R)
• M19: 17,934,840 km (0.114 R)
• M20: 22,511,936 km (0.079 R)
• M21: 23,403,689 km (0.113 R)
• M22: 23,584,852 km (0.041 R)
• M23: 25,352,501 km (0.116 R)
• M24: 26,611,816 km (0.098 R)
• M25: 27,608,287 km (0.107 R)
• M26: 28,013,847 km (0.068 R)
• M27: 28,320,523 km (0.085 R)
• M28: 30,315,410 km (0.094 R)
• M29: 31,292,284 km (0.059 R)
• M30: 32,740,092 km (0.09 R)
• M31: 33,537,898 km (0.1 R)
• M32: 34,115,645 km (0.105 R)
• M33: 34,465,405 km (0.093 R)
• M34: 36,008,955 km (0.075 R)
• M35: 36,614,677 km (0.114 R)
• M36: 40,915,167 km (0.088 R)
• M37: 41,840,580 km (0.03 R)

Kuiper Belt

Range: 30 - 58 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 528 - 14,714 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit