🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.29 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.58 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.93

Radius: 1.3

Gravity: 1.14 G

Time & Orbit

Eccentricity (e): 0.056

Orbit Range: 0.55 AU - 0.61 AU

Year: 285 Days

Day: 44.5 Hours

Environment

Temp: -133 °C

Axial Tilt: 47.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.62 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.48

Radius: 1.65

Gravity: 1.28 G

Time & Orbit

Eccentricity (e): 0.068

Orbit Range: 0.58 AU - 0.66 AU

Year: 315 Days

Day: 30.3 Hours

Environment

Temp: -120 °C

Axial Tilt: 25.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.68 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 230.5

Radius: 13.6

Gravity: 1.25 G

Time & Orbit

Eccentricity (e): 0.128

Orbit Range: 0.59 AU - 0.77 AU

Year: 362 Days

Day: 6.1 Hours

Environment

Temp: -130 °C

Axial Tilt: 34.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 16,781,362 km

• M1: 169,195 km (0.12 R)
• M2: 675,584 km (0.093 R)
• M3: 1,403,976 km (0.095 R)
• M4: 2,351,679 km (0.09 R)
• M5: 2,861,059 km (0.11 R)
• M6: 3,286,366 km (0.114 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.22 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 680.9

Radius: 12.1

Gravity: 4.65 G

Time & Orbit

Eccentricity (e): 0.181

Orbit Range: 1 AU - 1.44 AU

Year: 870 Days

Day: 9.2 Hours

Environment

Temp: -167 °C

Axial Tilt: 55.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 16,781,362 km

• M1: 150,495 km (0.055 R)
• M2: 724,353 km (0.09 R)
• M3: 1,630,168 km (0.086 R)
• M4: 2,068,041 km (0.076 R)
• M5: 2,759,632 km (0.072 R)
• M6: 3,775,551 km (0.091 R)
• M7: 4,419,420 km (0.094 R)
• M8: 4,811,965 km (0.053 R)
• M9: 6,491,949 km (0.093 R)
• M10: 7,254,001 km (0.068 R)
• M11: 7,681,103 km (0.105 R)
• M12: 8,074,695 km (0.038 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.66 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 843.6

Radius: 12.6

Gravity: 5.31 G

Time & Orbit

Eccentricity (e): 0.02

Orbit Range: 1.63 AU - 1.69 AU

Year: 1381 Days

Day: 6.8 Hours

Environment

Temp: -186 °C

Axial Tilt: 37.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 16,781,362 km

• M1: 159,322 km (0.119 R)
• M2: 560,992 km (0.113 R)
• M3: 1,629,420 km (0.093 R)
• M4: 2,154,209 km (0.113 R)
• M5: 3,831,949 km (0.077 R)
• M6: 4,911,597 km (0.093 R)
• M7: 5,413,947 km (0.087 R)
• M8: 7,887,847 km (0.114 R)
• M9: 8,549,369 km (0.044 R)
• M10: 9,061,891 km (0.091 R)
• M11: 13,363,578 km (0.073 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.84 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 678

Radius: 13.5

Gravity: 3.72 G

Time & Orbit

Eccentricity (e): 0.149

Orbit Range: 1.57 AU - 2.11 AU

Year: 1612 Days

Day: 10.2 Hours

Environment

Temp: -182 °C

Axial Tilt: 15.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 16,781,362 km

• M1: 168,447 km (0.073 R)
• M2: 1,029,383 km (0.118 R)
• M3: 1,873,564 km (0.057 R)
• M4: 2,493,497 km (0.079 R)
• M5: 3,172,073 km (0.08 R)
• M6: 4,223,297 km (0.072 R)
• M7: 5,494,730 km (0.094 R)
• M8: 6,328,289 km (0.11 R)
• M9: 8,542,038 km (0.117 R)
• M10: 9,468,199 km (0.11 R)
• M11: 10,055,520 km (0.11 R)
• M12: 11,667,288 km (0.113 R)
• M13: 12,535,105 km (0.096 R)
• M14: 13,044,336 km (0.118 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.69 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 927.5

Radius: 10.5

Gravity: 8.41 G

Time & Orbit

Eccentricity (e): 0.181

Orbit Range: 3.02 AU - 4.36 AU

Year: 4577 Days

Day: 12.7 Hours

Environment

Temp: -213 °C

Axial Tilt: 16.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (26)

Outer Limit: 16,781,362 km

• M1: 130,898 km (0.09 R)
• M2: 632,500 km (0.092 R)
• M3: 1,083,089 km (0.097 R)
• M4: 2,894,270 km (0.109 R)
• M5: 3,407,540 km (0.106 R)
• M6: 3,911,386 km (0.09 R)
• M7: 4,339,984 km (0.098 R)
• M8: 4,933,139 km (0.111 R)
• M9: 6,313,180 km (0.088 R)
• M10: 6,770,201 km (0.048 R)
• M11: 8,313,453 km (0.082 R)
• M12: 9,270,580 km (0.095 R)
• M13: 9,775,922 km (0.026 R)
• M14: 10,704,476 km (0.116 R)
• M15: 11,546,263 km (0.112 R)
• M16: 11,983,388 km (0.07 R)
• M17: 14,337,161 km (0.111 R)
• M18: 15,593,334 km (0.097 R)
• M19: 16,008,019 km (0.046 R)
• M20: 16,674,627 km (0.119 R)
• M21: 18,323,645 km (0.107 R)
• M22: 20,782,735 km (0.076 R)
• M23: 27,446,572 km (0.089 R)
• M24: 29,558,146 km (0.089 R)
• M25: 30,653,651 km (0.085 R)
• M26: 31,492,745 km (0.065 R)

Planet 8 - Ice Giant

Semi-Major Axis: 7.1 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 19.7

Radius: 3.2

Gravity: 1.92 G

Time & Orbit

Eccentricity (e): 0.055

Orbit Range: 6.71 AU - 7.49 AU

Year: 12215 Days

Day: 23.5 Hours

Environment

Temp: -225 °C

Axial Tilt: 38.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 16,781,362 km

• M1: 39,943 km (0.039 R)
• M2: 156,479 km (0.06 R)
• M3: 598,691 km (0.082 R)
• M4: 853,905 km (0.114 R)
• M5: 1,127,370 km (0.116 R)
• M6: 1,465,910 km (0.083 R)
• M7: 1,744,910 km (0.102 R)
• M8: 2,195,947 km (0.119 R)
• M9: 8,675,929 km (0.081 R)
• M10: 9,406,265 km (0.113 R)
• M11: 12,407,797 km (0.07 R)
• M12: 13,076,200 km (0.117 R)
• M13: 15,461,538 km (0.093 R)

Kuiper Belt

Range: 30 - 53 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 415 - 18,117 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit