🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.32 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.63 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.58

Radius: 1.67

Gravity: 1.28 G

Time & Orbit

Eccentricity (e): 0.147

Orbit Range: 0.54 AU - 0.72 AU

Year: 328 Days

Day: 28.7 Hours

Environment

Temp: -129 °C

Axial Tilt: 20.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.75 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 312.5

Radius: 9

Gravity: 3.86 G

Time & Orbit

Eccentricity (e): 0.056

Orbit Range: 0.71 AU - 0.79 AU

Year: 426 Days

Day: 6 Hours

Environment

Temp: -142 °C

Axial Tilt: 37.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 22,878,986 km

• M1: 112,198 km (0.086 R)
• M2: 687,402 km (0.069 R)
• M3: 972,835 km (0.086 R)
• M4: 2,470,758 km (0.103 R)
• M5: 2,826,801 km (0.096 R)
• M6: 3,711,523 km (0.118 R)
• M7: 3,995,460 km (0.119 R)

Planet 3 - Gas Giant

Semi-Major Axis: 2.48 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 828.6

Radius: 11.5

Gravity: 6.27 G

Time & Orbit

Eccentricity (e): 0.071

Orbit Range: 2.3 AU - 2.66 AU

Year: 2562 Days

Day: 13.3 Hours

Environment

Temp: -202 °C

Axial Tilt: 48.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 22,878,986 km

• M1: 143,016 km (0.106 R)
• M2: 611,706 km (0.103 R)
• M3: 1,179,280 km (0.048 R)
• M4: 1,669,662 km (0.066 R)
• M5: 2,405,683 km (0.067 R)
• M6: 3,755,206 km (0.094 R)
• M7: 4,155,530 km (0.069 R)
• M8: 4,696,027 km (0.073 R)
• M9: 5,761,612 km (0.037 R)
• M10: 7,589,998 km (0.1 R)
• M11: 8,808,771 km (0.058 R)
• M12: 9,519,661 km (0.11 R)
• M13: 10,895,363 km (0.093 R)
• M14: 12,618,880 km (0.093 R)
• M15: 14,276,274 km (0.047 R)
• M16: 14,761,271 km (0.055 R)
• M17: 16,440,656 km (0.114 R)
• M18: 17,463,457 km (0.109 R)
• M19: 18,130,963 km (0.096 R)
• M20: 18,989,206 km (0.118 R)

Planet 4 - Gas Giant

Semi-Major Axis: 3.18 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 510.3

Radius: 11.9

Gravity: 3.6 G

Time & Orbit

Eccentricity (e): 0.187

Orbit Range: 2.59 AU - 3.77 AU

Year: 3720 Days

Day: 13 Hours

Environment

Temp: -211 °C

Axial Tilt: 25.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 22,878,986 km

• M1: 152,590 km (0.097 R)
• M2: 794,065 km (0.079 R)
• M3: 1,432,100 km (0.086 R)
• M4: 2,711,013 km (0.116 R)
• M5: 3,985,586 km (0.118 R)
• M6: 4,437,073 km (0.106 R)
• M7: 4,994,923 km (0.095 R)
• M8: 5,730,945 km (0.111 R)
• M9: 7,293,195 km (0.098 R)
• M10: 7,773,554 km (0.047 R)
• M11: 8,207,089 km (0.095 R)
• M12: 8,727,241 km (0.105 R)
• M13: 9,949,306 km (0.082 R)
• M14: 10,541,115 km (0.053 R)
• M15: 10,948,619 km (0.107 R)
• M16: 11,622,707 km (0.046 R)
• M17: 14,103,339 km (0.103 R)
• M18: 15,572,091 km (0.077 R)
• M19: 19,110,380 km (0.085 R)

Planet 5 - Gas Giant

Semi-Major Axis: 4.42 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 561.9

Radius: 9.2

Gravity: 6.64 G

Time & Orbit

Eccentricity (e): 0.177

Orbit Range: 3.64 AU - 5.2 AU

Year: 6096 Days

Day: 10.4 Hours

Environment

Temp: -214 °C

Axial Tilt: 35.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (26)

Outer Limit: 22,878,986 km

• M1: 114,592 km (0.087 R)
• M2: 485,445 km (0.06 R)
• M3: 775,665 km (0.072 R)
• M4: 1,100,143 km (0.088 R)
• M5: 1,434,344 km (0.048 R)
• M6: 3,325,561 km (0.056 R)
• M7: 3,669,337 km (0.05 R)
• M8: 4,060,535 km (0.113 R)
• M9: 4,686,602 km (0.064 R)
• M10: 6,582,905 km (0.077 R)
• M11: 7,092,435 km (0.051 R)
• M12: 7,962,197 km (0.081 R)
• M13: 10,446,270 km (0.073 R)
• M14: 10,766,260 km (0.103 R)
• M15: 13,299,251 km (0.109 R)
• M16: 15,193,309 km (0.076 R)
• M17: 19,303,062 km (0.108 R)
• M18: 21,063,530 km (0.072 R)
• M19: 21,648,757 km (0.064 R)
• M20: 21,945,559 km (0.059 R)
• M21: 23,082,353 km (0.103 R)
• M22: 23,392,021 km (0.091 R)
• M23: 26,053,666 km (0.099 R)
• M24: 26,473,886 km (0.11 R)
• M25: 29,180,561 km (0.114 R)
• M26: 29,542,737 km (0.112 R)

Planet 6 - Gas Giant

Semi-Major Axis: 5.1 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 967.1

Radius: 8.2

Gravity: 14.38 G

Time & Orbit

Eccentricity (e): 0.189

Orbit Range: 4.14 AU - 6.06 AU

Year: 7556 Days

Day: 10.1 Hours

Environment

Temp: -216 °C

Axial Tilt: 111.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (33)

Outer Limit: 22,878,986 km

• M1: 102,026 km (0.071 R)
• M2: 502,499 km (0.094 R)
• M3: 1,176,288 km (0.073 R)
• M4: 1,519,615 km (0.053 R)
• M5: 2,544,061 km (0.073 R)
• M6: 2,971,762 km (0.067 R)
• M7: 3,714,964 km (0.083 R)
• M8: 4,103,619 km (0.051 R)
• M9: 5,085,729 km (0.051 R)
• M10: 6,765,265 km (0.08 R)
• M11: 7,227,372 km (0.118 R)
• M12: 7,710,274 km (0.116 R)
• M13: 9,763,206 km (0.025 R)
• M14: 11,336,676 km (0.04 R)
• M15: 12,551,261 km (0.062 R)
• M16: 12,838,938 km (0.094 R)
• M17: 14,658,796 km (0.087 R)
• M18: 14,978,038 km (0.092 R)
• M19: 16,644,259 km (0.073 R)
• M20: 16,991,775 km (0.074 R)
• M21: 17,701,318 km (0.12 R)
• M22: 20,738,304 km (0.055 R)
• M23: 21,059,939 km (0.067 R)
• M24: 22,548,438 km (0.081 R)
• M25: 23,753,748 km (0.1 R)
• M26: 24,194,464 km (0.042 R)
• M27: 25,826,277 km (0.079 R)
• M28: 26,105,277 km (0.071 R)
• M29: 31,265,656 km (0.092 R)
• M30: 38,018,952 km (0.069 R)
• M31: 39,600,352 km (0.093 R)
• M32: 42,246,738 km (0.118 R)
• M33: 43,547,491 km (0.088 R)

Planet 7 - Ice Giant

Semi-Major Axis: 8.12 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 575.7

Radius: 5.7

Gravity: 17.72 G

Time & Orbit

Eccentricity (e): 0.188

Orbit Range: 6.59 AU - 9.65 AU

Year: 15179 Days

Day: 15.3 Hours

Environment

Temp: -228 °C

Axial Tilt: 34.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 22,878,986 km

• M1: 70,909 km (0.111 R)
• M2: 284,685 km (0.101 R)
• M3: 520,152 km (0.113 R)
• M4: 1,181,374 km (0.105 R)
• M5: 1,714,541 km (0.117 R)
• M6: 3,268,414 km (0.052 R)
• M7: 4,183,654 km (0.12 R)
• M8: 4,881,827 km (0.108 R)
• M9: 5,803,799 km (0.078 R)
• M10: 6,547,300 km (0.093 R)
• M11: 7,005,818 km (0.111 R)
• M12: 8,317,043 km (0.092 R)
• M13: 11,122,003 km (0.095 R)
• M14: 11,834,837 km (0.11 R)
• M15: 12,514,460 km (0.111 R)
• M16: 14,361,695 km (0.061 R)
• M17: 15,422,493 km (0.082 R)
• M18: 20,364,010 km (0.106 R)
• M19: 29,716,271 km (0.094 R)
• M20: 34,438,776 km (0.12 R)
• M21: 43,863,592 km (0.098 R)
• M22: 48,069,685 km (0.117 R)

Planet 8 - Ice Giant

Semi-Major Axis: 8.8 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 25.4

Radius: 4

Gravity: 1.59 G

Time & Orbit

Eccentricity (e): 0.028

Orbit Range: 8.55 AU - 9.05 AU

Year: 17125 Days

Day: 24.9 Hours

Environment

Temp: -236 °C

Axial Tilt: 43.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 22,878,986 km

• M1: 79,287 km (0.087 R)
• M2: 460,313 km (0.107 R)
• M3: 1,011,880 km (0.067 R)
• M4: 1,244,056 km (0.068 R)
• M5: 1,814,622 km (0.077 R)
• M6: 2,345,096 km (0.098 R)
• M7: 2,801,968 km (0.079 R)
• M8: 3,644,503 km (0.104 R)
• M9: 3,994,862 km (0.082 R)
• M10: 4,145,507 km (0.11 R)
• M11: 6,523,963 km (0.117 R)
• M12: 8,220,553 km (0.11 R)
• M13: 9,077,449 km (0.12 R)
• M14: 14,469,405 km (0.112 R)
• M15: 15,082,906 km (0.052 R)
• M16: 16,143,705 km (0.105 R)
• M17: 16,306,916 km (0.088 R)
• M18: 19,933,617 km (0.097 R)

Kuiper Belt

Range: 30 - 57 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 495 - 18,082 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit