🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.43 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Gas Giant

Semi-Major Axis: 0.85 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 402.9

Radius: 13.9

Gravity: 2.09 G

Time & Orbit

Eccentricity (e): 0.09

Orbit Range: 0.77 AU - 0.93 AU

Year: 541 Days

Day: 14.9 Hours

Environment

Temp: -174 °C

Axial Tilt: 7.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 71,570,654 km

• M1: 173,085 km (0.064 R)
• M2: 625,170 km (0.1 R)
• M3: 1,140,833 km (0.093 R)
• M4: 1,674,748 km (0.099 R)
• M5: 2,226,465 km (0.118 R)
• M6: 3,111,785 km (0.115 R)
• M7: 3,943,699 km (0.117 R)
• M8: 4,668,650 km (0.097 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.92 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 67.4

Radius: 14.5

Gravity: 0.32 G

Time & Orbit

Eccentricity (e): 0.155

Orbit Range: 0.78 AU - 1.06 AU

Year: 609 Days

Day: 8 Hours

Environment

Temp: -176 °C

Axial Tilt: 24.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (4)

Outer Limit: 71,570,654 km

• M1: 180,415 km (0.063 R)
• M2: 652,696 km (0.044 R)
• M3: 1,182,870 km (0.056 R)
• M4: 1,848,132 km (0.098 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.28 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 540

Radius: 12.1

Gravity: 3.69 G

Time & Orbit

Eccentricity (e): 0.166

Orbit Range: 1.07 AU - 1.49 AU

Year: 1000 Days

Day: 10.9 Hours

Environment

Temp: -185 °C

Axial Tilt: 14.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 71,570,654 km

• M1: 151,243 km (0.063 R)
• M2: 633,697 km (0.064 R)
• M3: 1,137,542 km (0.068 R)
• M4: 1,571,825 km (0.093 R)
• M5: 1,953,599 km (0.091 R)
• M6: 3,180,750 km (0.119 R)
• M7: 4,078,936 km (0.104 R)
• M8: 4,725,946 km (0.115 R)
• M9: 5,250,586 km (0.089 R)
• M10: 6,100,152 km (0.116 R)
• M11: 6,503,767 km (0.117 R)
• M12: 7,247,418 km (0.036 R)
• M13: 7,676,316 km (0.073 R)
• M14: 8,097,134 km (0.061 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.36 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 878.8

Radius: 11.6

Gravity: 6.53 G

Time & Orbit

Eccentricity (e): 0.076

Orbit Range: 2.18 AU - 2.54 AU

Year: 2503 Days

Day: 11.5 Hours

Environment

Temp: -202 °C

Axial Tilt: 2.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 71,570,654 km

• M1: 144,512 km (0.113 R)
• M2: 862,432 km (0.105 R)
• M3: 1,410,110 km (0.087 R)
• M4: 2,066,246 km (0.119 R)
• M5: 2,852,831 km (0.073 R)
• M6: 3,617,725 km (0.076 R)
• M7: 4,669,997 km (0.093 R)
• M8: 5,784,800 km (0.111 R)
• M9: 7,249,662 km (0.108 R)
• M10: 9,054,112 km (0.059 R)
• M11: 10,079,755 km (0.104 R)
• M12: 10,660,195 km (0.083 R)
• M13: 11,635,423 km (0.032 R)
• M14: 13,998,322 km (0.066 R)
• M15: 17,367,565 km (0.113 R)
• M16: 19,122,497 km (0.11 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.09 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 484

Radius: 11.7

Gravity: 3.54 G

Time & Orbit

Eccentricity (e): 0.035

Orbit Range: 2.98 AU - 3.2 AU

Year: 3749 Days

Day: 7.2 Hours

Environment

Temp: -219 °C

Axial Tilt: 56.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 71,570,654 km

• M1: 145,559 km (0.086 R)
• M2: 614,249 km (0.097 R)
• M3: 1,012,329 km (0.049 R)
• M4: 1,676,543 km (0.118 R)
• M5: 2,523,866 km (0.06 R)
• M6: 2,918,654 km (0.067 R)
• M7: 3,656,770 km (0.04 R)
• M8: 4,294,356 km (0.105 R)
• M9: 5,300,253 km (0.102 R)
• M10: 5,791,981 km (0.119 R)
• M11: 6,314,227 km (0.098 R)
• M12: 7,580,573 km (0.071 R)
• M13: 8,549,369 km (0.093 R)
• M14: 10,174,151 km (0.114 R)
• M15: 10,691,311 km (0.082 R)
• M16: 13,076,649 km (0.038 R)
• M17: 13,451,093 km (0.114 R)
• M18: 14,025,997 km (0.098 R)
• M19: 15,639,560 km (0.09 R)
• M20: 18,579,308 km (0.098 R)
• M21: 21,284,935 km (0.086 R)

Planet 6 - Gas Giant

Semi-Major Axis: 4.11 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 580.3

Radius: 8.5

Gravity: 8.03 G

Time & Orbit

Eccentricity (e): 0.102

Orbit Range: 3.69 AU - 4.53 AU

Year: 5751 Days

Day: 14.2 Hours

Environment

Temp: -210 °C

Axial Tilt: 1.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 71,570,654 km

• M1: 105,766 km (0.094 R)
• M2: 748,737 km (0.092 R)
• M3: 1,019,061 km (0.118 R)
• M4: 1,516,174 km (0.074 R)
• M5: 2,182,334 km (0.09 R)
• M6: 5,306,835 km (0.044 R)
• M7: 6,858,165 km (0.115 R)
• M8: 7,306,659 km (0.12 R)
• M9: 8,300,587 km (0.108 R)
• M10: 17,342,133 km (0.086 R)
• M11: 23,047,347 km (0.076 R)
• M12: 25,088,909 km (0.11 R)
• M13: 26,655,049 km (0.041 R)
• M14: 27,677,102 km (0.079 R)
• M15: 28,023,571 km (0.098 R)
• M16: 29,438,467 km (0.093 R)

Planet 7 - Gas Giant

Semi-Major Axis: 5.43 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 163.5

Radius: 11.5

Gravity: 1.24 G

Time & Orbit

Eccentricity (e): 0.073

Orbit Range: 5.03 AU - 5.83 AU

Year: 8734 Days

Day: 14.6 Hours

Environment

Temp: -228 °C

Axial Tilt: 28.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 71,570,654 km

• M1: 143,016 km (0.114 R)
• M2: 843,882 km (0.072 R)
• M3: 1,511,836 km (0.108 R)
• M4: 2,638,607 km (0.09 R)
• M5: 3,076,031 km (0.113 R)
• M6: 4,738,064 km (0.05 R)
• M7: 5,361,438 km (0.066 R)
• M8: 5,893,259 km (0.053 R)
• M9: 6,868,337 km (0.113 R)
• M10: 7,633,381 km (0.061 R)
• M11: 8,126,306 km (0.109 R)
• M12: 10,569,838 km (0.074 R)
• M13: 12,100,074 km (0.088 R)
• M14: 12,576,992 km (0.091 R)
• M15: 14,558,266 km (0.101 R)
• M16: 17,034,111 km (0.094 R)
• M17: 17,694,436 km (0.052 R)
• M18: 18,811,783 km (0.075 R)
• M19: 23,680,894 km (0.107 R)
• M20: 24,731,370 km (0.086 R)

Planet 8 - Ice Giant

Semi-Major Axis: 10 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 478.6

Radius: 5.1

Gravity: 18.4 G

Time & Orbit

Eccentricity (e): 0.127

Orbit Range: 8.73 AU - 11.27 AU

Year: 21828 Days

Day: 15.8 Hours

Environment

Temp: -236 °C

Axial Tilt: 38.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 71,570,654 km

• M1: 63,429 km (0.096 R)
• M2: 243,246 km (0.101 R)
• M3: 494,571 km (0.107 R)
• M4: 1,502,411 km (0.072 R)
• M5: 1,880,595 km (0.088 R)
• M6: 2,277,179 km (0.113 R)
• M7: 2,563,659 km (0.117 R)
• M8: 4,919,975 km (0.037 R)
• M9: 11,638,864 km (0.057 R)
• M10: 16,941,211 km (0.101 R)
• M11: 25,873,550 km (0.07 R)
• M12: 26,753,335 km (0.08 R)
• M13: 28,225,378 km (0.105 R)
• M14: 30,351,314 km (0.064 R)
• M15: 32,963,891 km (0.117 R)
• M16: 34,786,442 km (0.099 R)
• M17: 43,054,417 km (0.057 R)
• M18: 67,571,713 km (0.1 R)

Kuiper Belt

Range: 30 - 51 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 474 - 17,861 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit