🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.33 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.65 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.75

Radius: 0.89

Gravity: 0.95 G

Time & Orbit

Eccentricity (e): 0.165

Orbit Range: 0.54 AU - 0.76 AU

Year: 338 Days

Day: 15.6 Hours

Environment

Temp: -125 °C

Axial Tilt: 31.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.86 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 784.5

Radius: 8.8

Gravity: 10.13 G

Time & Orbit

Eccentricity (e): 0.083

Orbit Range: 0.79 AU - 0.93 AU

Year: 515 Days

Day: 13.2 Hours

Environment

Temp: -159 °C

Axial Tilt: 102.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 54,633,292 km

• M1: 109,954 km (0.056 R)
• M2: 430,842 km (0.039 R)
• M3: 740,360 km (0.107 R)
• M4: 1,081,144 km (0.116 R)
• M5: 1,368,073 km (0.11 R)
• M6: 1,866,981 km (0.029 R)
• M7: 2,315,027 km (0.029 R)
• M8: 3,426,988 km (0.119 R)
• M9: 4,202,204 km (0.087 R)
• M10: 5,516,571 km (0.115 R)

Planet 3 - Gas Giant

Semi-Major Axis: 3.49 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 136.6

Radius: 11.5

Gravity: 1.03 G

Time & Orbit

Eccentricity (e): 0.019

Orbit Range: 3.42 AU - 3.56 AU

Year: 4210 Days

Day: 13.7 Hours

Environment

Temp: -214 °C

Axial Tilt: 3.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 54,633,292 km

• M1: 145,858 km (0.073 R)
• M2: 1,067,680 km (0.073 R)
• M3: 4,040,489 km (0.06 R)
• M4: 4,603,874 km (0.05 R)
• M5: 5,308,032 km (0.087 R)
• M6: 8,674,283 km (0.066 R)
• M7: 9,282,697 km (0.085 R)
• M8: 14,589,682 km (0.112 R)
• M9: 15,497,143 km (0.11 R)

Planet 4 - Ice Giant

Semi-Major Axis: 7.12 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 904.2

Radius: 7.1

Gravity: 17.94 G

Time & Orbit

Eccentricity (e): 0.23

Orbit Range: 5.48 AU - 8.76 AU

Year: 12267 Days

Day: 24 Hours

Environment

Temp: -215 °C

Axial Tilt: 42.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (36)

Outer Limit: 54,633,292 km

• M1: 111,750 km (0.071 R)
• M2: 569,669 km (0.117 R)
• M3: 1,017,116 km (0.099 R)
• M4: 1,246,449 km (0.118 R)
• M5: 1,761,964 km (0.081 R)
• M6: 2,023,012 km (0.037 R)
• M7: 3,062,268 km (0.082 R)
• M8: 5,283,647 km (0.109 R)
• M9: 5,644,328 km (0.03 R)
• M10: 5,982,868 km (0.12 R)
• M11: 6,334,871 km (0.04 R)
• M12: 9,249,786 km (0.092 R)
• M13: 10,541,414 km (0.079 R)
• M14: 12,133,434 km (0.101 R)
• M15: 12,507,878 km (0.103 R)
• M16: 17,228,738 km (0.075 R)
• M17: 18,839,757 km (0.055 R)
• M18: 29,415,429 km (0.063 R)
• M19: 29,977,917 km (0.059 R)
• M20: 30,892,858 km (0.072 R)
• M21: 32,181,045 km (0.11 R)
• M22: 33,019,242 km (0.073 R)
• M23: 34,118,188 km (0.092 R)
• M24: 35,115,407 km (0.101 R)
• M25: 37,957,617 km (0.077 R)
• M26: 40,118,409 km (0.08 R)
• M27: 43,221,667 km (0.092 R)
• M28: 43,511,588 km (0.082 R)
• M29: 44,980,041 km (0.112 R)
• M30: 48,952,313 km (0.098 R)
• M31: 49,901,212 km (0.091 R)
• M32: 50,380,075 km (0.096 R)
• M33: 52,655,907 km (0.082 R)
• M34: 53,819,180 km (0.073 R)
• M35: 58,466,438 km (0.064 R)
• M36: 60,073,119 km (0.107 R)

Planet 5 - Ice Giant

Semi-Major Axis: 8.12 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 836

Radius: 3.6

Gravity: 64.51 G

Time & Orbit

Eccentricity (e): 0.198

Orbit Range: 6.51 AU - 9.73 AU

Year: 14940 Days

Day: 17.1 Hours

Environment

Temp: -225 °C

Axial Tilt: 35.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (33)

Outer Limit: 54,633,292 km

• M1: 45,179 km (0.115 R)
• M2: 236,365 km (0.028 R)
• M3: 397,182 km (0.095 R)
• M4: 709,692 km (0.102 R)
• M5: 1,090,120 km (0.105 R)
• M6: 1,261,708 km (0.117 R)
• M7: 1,815,071 km (0.086 R)
• M8: 2,962,487 km (0.026 R)
• M9: 3,192,119 km (0.067 R)
• M10: 3,378,668 km (0.049 R)
• M11: 3,686,690 km (0.095 R)
• M12: 7,259,685 km (0.042 R)
• M13: 7,724,037 km (0.085 R)
• M14: 9,396,990 km (0.056 R)
• M15: 10,004,358 km (0.083 R)
• M16: 10,288,893 km (0.109 R)
• M17: 11,174,961 km (0.115 R)
• M18: 14,350,774 km (0.116 R)
• M19: 17,912,550 km (0.095 R)
• M20: 19,190,415 km (0.082 R)
• M21: 22,599,750 km (0.084 R)
• M22: 27,930,072 km (0.093 R)
• M23: 31,669,420 km (0.06 R)
• M24: 35,073,071 km (0.1 R)
• M25: 35,861,153 km (0.099 R)
• M26: 41,128,643 km (0.111 R)
• M27: 42,152,042 km (0.115 R)
• M28: 44,097,413 km (0.083 R)
• M29: 44,707,922 km (0.119 R)
• M30: 45,169,282 km (0.079 R)
• M31: 47,524,551 km (0.109 R)
• M32: 56,500,722 km (0.116 R)
• M33: 56,859,907 km (0.063 R)

Planet 6 - Ice Giant

Semi-Major Axis: 8.35 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 417.9

Radius: 7.9

Gravity: 6.7 G

Time & Orbit

Eccentricity (e): 0.225

Orbit Range: 6.47 AU - 10.23 AU

Year: 15579 Days

Day: 20.4 Hours

Environment

Temp: -235 °C

Axial Tilt: 10.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 54,633,292 km

• M1: 98,286 km (0.101 R)
• M2: 449,242 km (0.118 R)
• M3: 702,960 km (0.108 R)
• M4: 991,983 km (0.102 R)
• M5: 1,347,428 km (0.085 R)
• M6: 1,660,836 km (0.119 R)
• M7: 1,953,150 km (0.031 R)
• M8: 6,514,239 km (0.077 R)
• M9: 8,590,508 km (0.077 R)
• M10: 9,370,960 km (0.115 R)
• M11: 12,234,712 km (0.099 R)
• M12: 16,063,670 km (0.118 R)
• M13: 16,573,948 km (0.101 R)
• M14: 19,534,640 km (0.112 R)
• M15: 21,139,376 km (0.076 R)
• M16: 23,105,242 km (0.106 R)
• M17: 30,167,159 km (0.051 R)
• M18: 33,119,024 km (0.109 R)
• M19: 38,156,283 km (0.074 R)

Kuiper Belt

Range: 30 - 49 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 473 - 17,380 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit