🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.28 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.56 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.1

Radius: 0.4

Gravity: 0.63 G

Time & Orbit

Eccentricity (e): 0.054

Orbit Range: 0.53 AU - 0.59 AU

Year: 275 Days

Day: 14.3 Hours

Environment

Temp: -124 °C

Axial Tilt: 26.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.74 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 623

Radius: 8.1

Gravity: 9.5 G

Time & Orbit

Eccentricity (e): 0.21

Orbit Range: 0.58 AU - 0.9 AU

Year: 418 Days

Day: 7.8 Hours

Environment

Temp: -144 °C

Axial Tilt: 7.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 40,341,861 km

• M1: 100,679 km (0.108 R)
• M2: 392,545 km (0.052 R)
• M3: 927,208 km (0.113 R)
• M4: 1,553,275 km (0.074 R)
• M5: 1,849,628 km (0.045 R)
• M6: 2,183,830 km (0.102 R)
• M7: 2,558,273 km (0.06 R)
• M8: 2,900,703 km (0.112 R)
• M9: 3,459,900 km (0.107 R)
• M10: 3,715,413 km (0.093 R)
• M11: 4,347,314 km (0.113 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.59 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 316.4

Radius: 13.9

Gravity: 1.64 G

Time & Orbit

Eccentricity (e): 0.115

Orbit Range: 1.41 AU - 1.77 AU

Year: 1315 Days

Day: 6.3 Hours

Environment

Temp: -179 °C

Axial Tilt: 33.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 40,341,861 km

• M1: 172,935 km (0.081 R)
• M2: 885,021 km (0.11 R)
• M3: 1,687,763 km (0.119 R)
• M4: 2,548,250 km (0.09 R)
• M5: 3,655,873 km (0.092 R)
• M6: 4,190,386 km (0.119 R)
• M7: 4,918,778 km (0.086 R)
• M8: 5,475,880 km (0.063 R)
• M9: 6,455,148 km (0.085 R)
• M10: 7,217,200 km (0.059 R)
• M11: 8,681,464 km (0.055 R)
• M12: 9,303,192 km (0.109 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.78 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 153.9

Radius: 13.8

Gravity: 0.81 G

Time & Orbit

Eccentricity (e): 0.169

Orbit Range: 1.48 AU - 2.08 AU

Year: 1558 Days

Day: 6.9 Hours

Environment

Temp: -187 °C

Axial Tilt: 12.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 40,341,861 km

• M1: 173,534 km (0.095 R)
• M2: 603,927 km (0.117 R)
• M3: 1,192,445 km (0.103 R)
• M4: 2,075,521 km (0.046 R)
• M5: 2,624,246 km (0.111 R)
• M6: 3,644,503 km (0.112 R)
• M7: 7,926,892 km (0.107 R)
• M8: 8,436,722 km (0.105 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.48 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 648.7

Radius: 13.1

Gravity: 3.78 G

Time & Orbit

Eccentricity (e): 0.144

Orbit Range: 2.12 AU - 2.84 AU

Year: 2562 Days

Day: 13.1 Hours

Environment

Temp: -188 °C

Axial Tilt: 39.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 40,341,861 km

• M1: 162,912 km (0.085 R)
• M2: 607,966 km (0.111 R)
• M3: 1,155,644 km (0.083 R)
• M4: 1,628,522 km (0.058 R)
• M5: 2,104,992 km (0.109 R)
• M6: 3,061,820 km (0.099 R)
• M7: 6,675,356 km (0.076 R)
• M8: 8,524,835 km (0.106 R)
• M9: 10,204,370 km (0.061 R)
• M10: 11,480,739 km (0.078 R)
• M11: 13,389,159 km (0.097 R)
• M12: 14,116,354 km (0.093 R)
• M13: 14,536,724 km (0.077 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.84 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 273.5

Radius: 14

Gravity: 1.4 G

Time & Orbit

Eccentricity (e): 0.213

Orbit Range: 2.24 AU - 3.44 AU

Year: 3140 Days

Day: 8.6 Hours

Environment

Temp: -196 °C

Axial Tilt: 22.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 40,341,861 km

• M1: 174,132 km (0.09 R)
• M2: 618,438 km (0.109 R)
• M3: 1,310,477 km (0.098 R)
• M4: 2,351,828 km (0.103 R)
• M5: 4,982,357 km (0.094 R)
• M6: 5,778,367 km (0.076 R)
• M7: 6,951,963 km (0.055 R)
• M8: 8,938,473 km (0.086 R)
• M9: 11,894,228 km (0.092 R)
• M10: 12,450,283 km (0.11 R)
• M11: 13,486,547 km (0.084 R)
• M12: 14,445,470 km (0.105 R)
• M13: 15,636,717 km (0.097 R)

Planet 7 - Ice Giant

Semi-Major Axis: 6.03 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 432.8

Radius: 7.7

Gravity: 7.3 G

Time & Orbit

Eccentricity (e): 0.182

Orbit Range: 4.93 AU - 7.13 AU

Year: 9714 Days

Day: 15.4 Hours

Environment

Temp: -215 °C

Axial Tilt: 24.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (29)

Outer Limit: 40,341,861 km

• M1: 95,743 km (0.098 R)
• M2: 398,828 km (0.085 R)
• M3: 732,132 km (0.057 R)
• M4: 1,047,185 km (0.065 R)
• M5: 1,608,776 km (0.112 R)
• M6: 1,957,937 km (0.083 R)
• M7: 2,392,519 km (0.079 R)
• M8: 2,633,072 km (0.05 R)
• M9: 2,910,277 km (0.114 R)
• M10: 3,431,476 km (0.091 R)
• M11: 3,714,515 km (0.112 R)
• M12: 4,491,227 km (0.092 R)
• M13: 5,820,255 km (0.037 R)
• M14: 6,087,437 km (0.102 R)
• M15: 7,013,298 km (0.084 R)
• M16: 9,641,134 km (0.09 R)
• M17: 11,613,881 km (0.05 R)
• M18: 14,318,461 km (0.078 R)
• M19: 15,243,125 km (0.118 R)
• M20: 15,752,207 km (0.113 R)
• M21: 20,165,643 km (0.093 R)
• M22: 23,274,736 km (0.053 R)
• M23: 27,057,468 km (0.094 R)
• M24: 28,563,769 km (0.085 R)
• M25: 32,363,704 km (0.092 R)
• M26: 33,310,659 km (0.074 R)
• M27: 34,059,845 km (0.069 R)
• M28: 38,557,804 km (0.118 R)
• M29: 39,028,289 km (0.086 R)

Kuiper Belt

Range: 30 - 54 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 221 - 19,386 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit