🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.31 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.61 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.71

Radius: 1.86

Gravity: 1.36 G

Time & Orbit

Eccentricity (e): 0.245

Orbit Range: 0.46 AU - 0.76 AU

Year: 303 Days

Day: 41 Hours

Environment

Temp: -124 °C

Axial Tilt: 37.3 °

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: 2.58

Radius: 1.46

Gravity: 1.21 G

Time & Orbit

Eccentricity (e): 0.116

Orbit Range: 0.55 AU - 0.69 AU

Year: 310 Days

Day: 29.4 Hours

Environment

Temp: -138 °C

Axial Tilt: 0.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.75 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 536.1

Radius: 8.5

Gravity: 7.42 G

Time & Orbit

Eccentricity (e): 0.204

Orbit Range: 0.6 AU - 0.9 AU

Year: 413 Days

Day: 13.4 Hours

Environment

Temp: -152 °C

Axial Tilt: 26 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 75,656,805 km

• M1: 105,766 km (0.058 R)
• M2: 396,285 km (0.113 R)
• M3: 807,978 km (0.097 R)
• M4: 1,222,813 km (0.072 R)
• M5: 1,731,895 km (0.085 R)
• M6: 2,560,068 km (0.065 R)
• M7: 3,523,179 km (0.044 R)
• M8: 3,977,508 km (0.097 R)
• M9: 4,346,716 km (0.12 R)
• M10: 4,652,943 km (0.071 R)
• M11: 5,033,220 km (0.073 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.02 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 864.3

Radius: 10.7

Gravity: 7.55 G

Time & Orbit

Eccentricity (e): 0.164

Orbit Range: 0.85 AU - 1.19 AU

Year: 655 Days

Day: 11.2 Hours

Environment

Temp: -154 °C

Axial Tilt: 45.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 75,656,805 km

• M1: 132,993 km (0.078 R)
• M2: 494,271 km (0.064 R)
• M3: 960,568 km (0.038 R)
• M4: 1,401,433 km (0.116 R)
• M5: 1,749,248 km (0.104 R)
• M6: 2,772,198 km (0.111 R)
• M7: 3,199,001 km (0.088 R)
• M8: 5,112,956 km (0.105 R)
• M9: 5,644,178 km (0.097 R)
• M10: 6,667,577 km (0.09 R)
• M11: 7,234,852 km (0.105 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.16 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 383.1

Radius: 11

Gravity: 3.17 G

Time & Orbit

Eccentricity (e): 0.139

Orbit Range: 1.86 AU - 2.46 AU

Year: 2018 Days

Day: 14.4 Hours

Environment

Temp: -185 °C

Axial Tilt: 1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 75,656,805 km

• M1: 136,882 km (0.106 R)
• M2: 934,687 km (0.047 R)
• M3: 1,362,687 km (0.041 R)
• M4: 2,266,857 km (0.079 R)
• M5: 4,200,858 km (0.098 R)
• M6: 5,053,865 km (0.099 R)
• M7: 5,949,208 km (0.116 R)
• M8: 8,485,790 km (0.07 R)
• M9: 9,813,172 km (0.043 R)
• M10: 10,749,056 km (0.101 R)
• M11: 11,489,116 km (0.071 R)
• M12: 12,452,078 km (0.098 R)

Planet 6 - Gas Giant

Semi-Major Axis: 4.63 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 416.8

Radius: 14.5

Gravity: 1.98 G

Time & Orbit

Eccentricity (e): 0.082

Orbit Range: 4.25 AU - 5.01 AU

Year: 6334 Days

Day: 6 Hours

Environment

Temp: -217 °C

Axial Tilt: 0.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 75,656,805 km

• M1: 180,415 km (0.119 R)
• M2: 685,757 km (0.069 R)
• M3: 1,468,004 km (0.041 R)
• M4: 2,247,708 km (0.051 R)
• M5: 3,252,258 km (0.114 R)
• M6: 4,130,397 km (0.092 R)
• M7: 5,027,236 km (0.028 R)
• M8: 6,050,635 km (0.05 R)
• M9: 7,450,273 km (0.1 R)
• M10: 9,543,447 km (0.058 R)
• M11: 12,642,666 km (0.113 R)
• M12: 14,149,116 km (0.108 R)
• M13: 15,029,799 km (0.096 R)
• M14: 16,182,002 km (0.087 R)
• M15: 18,338,904 km (0.033 R)
• M16: 20,961,205 km (0.114 R)
• M17: 24,520,737 km (0.094 R)
• M18: 26,856,558 km (0.043 R)
• M19: 28,638,119 km (0.111 R)

Asteroid Belt

Center: 5.18 AU

Composition

Type: Outer System (Icy)

A dense region of planetesimals and debris.

Boundary

Planet 7 - Gas Giant

Semi-Major Axis: 5.73 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 328.3

Radius: 13.7

Gravity: 1.75 G

Time & Orbit

Eccentricity (e): 0.001

Orbit Range: 5.72 AU - 5.74 AU

Year: 8721 Days

Day: 5.6 Hours

Environment

Temp: -211 °C

Axial Tilt: 16 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 75,656,805 km

• M1: 176,675 km (0.084 R)
• M2: 735,274 km (0.119 R)
• M3: 1,497,624 km (0.046 R)
• M4: 2,270,148 km (0.071 R)
• M5: 2,974,754 km (0.095 R)
• M6: 4,105,564 km (0.045 R)
• M7: 5,746,503 km (0.11 R)
• M8: 6,647,381 km (0.08 R)
• M9: 7,347,051 km (0.089 R)
• M10: 15,008,406 km (0.072 R)
• M11: 17,353,802 km (0.092 R)
• M12: 20,148,140 km (0.1 R)
• M13: 24,027,064 km (0.109 R)
• M14: 29,196,867 km (0.08 R)
• M15: 30,786,643 km (0.099 R)
• M16: 34,240,260 km (0.073 R)

Planet 8 - Ice Giant

Semi-Major Axis: 8.92 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 938.8

Radius: 5.9

Gravity: 26.97 G

Time & Orbit

Eccentricity (e): 0.032

Orbit Range: 8.63 AU - 9.21 AU

Year: 16939 Days

Day: 16.7 Hours

Environment

Temp: -234 °C

Axial Tilt: 34.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (29)

Outer Limit: 75,656,805 km

• M1: 74,799 km (0.062 R)
• M2: 271,969 km (0.118 R)
• M3: 478,414 km (0.044 R)
• M4: 763,398 km (0.097 R)
• M5: 1,511,986 km (0.026 R)
• M6: 2,155,257 km (0.101 R)
• M7: 2,765,017 km (0.049 R)
• M8: 3,044,167 km (0.105 R)
• M9: 4,767,086 km (0.025 R)
• M10: 4,983,703 km (0.055 R)
• M11: 5,593,614 km (0.061 R)
• M12: 5,834,766 km (0.117 R)
• M13: 8,122,716 km (0.111 R)
• M14: 8,643,017 km (0.087 R)
• M15: 9,521,306 km (0.065 R)
• M16: 12,648,500 km (0.059 R)
• M17: 13,276,063 km (0.115 R)
• M18: 26,557,960 km (0.029 R)
• M19: 27,354,719 km (0.089 R)
• M20: 28,520,535 km (0.062 R)
• M21: 29,355,889 km (0.096 R)
• M22: 33,515,309 km (0.088 R)
• M23: 40,689,424 km (0.102 R)
• M24: 52,110,025 km (0.073 R)
• M25: 52,464,272 km (0.088 R)
• M26: 55,911,606 km (0.099 R)
• M27: 56,843,301 km (0.064 R)
• M28: 62,451,875 km (0.09 R)
• M29: 65,081,506 km (0.085 R)

Kuiper Belt

Range: 30 - 48 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 307 - 12,012 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit