🌌 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: 1.45

Radius: 1.16

Gravity: 1.08 G

Time & Orbit

Eccentricity (e): 0.09

Orbit Range: 0.59 AU - 0.71 AU

Year: 344 Days

Day: 44.6 Hours

Environment

Temp: -129 °C

Axial Tilt: 25.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.66 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.79

Radius: 1.87

Gravity: 1.37 G

Time & Orbit

Eccentricity (e): 0.189

Orbit Range: 0.54 AU - 0.78 AU

Year: 352 Days

Day: 31.1 Hours

Environment

Temp: -135 °C

Axial Tilt: 129.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 80,077,691 km

• M1: 189,989 km (0.069 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.7 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 598

Radius: 12.5

Gravity: 3.83 G

Time & Orbit

Eccentricity (e): 0.207

Orbit Range: 0.56 AU - 0.84 AU

Year: 384 Days

Day: 11.8 Hours

Environment

Temp: -141 °C

Axial Tilt: 32.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 80,077,691 km

• M1: 156,479 km (0.107 R)
• M2: 546,631 km (0.067 R)
• M3: 1,025,194 km (0.046 R)
• M4: 1,564,495 km (0.083 R)
• M5: 1,966,763 km (0.063 R)
• M6: 2,394,464 km (0.025 R)
• M7: 2,945,732 km (0.114 R)
• M8: 3,396,769 km (0.119 R)
• M9: 3,856,932 km (0.119 R)
• M10: 4,831,562 km (0.103 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.86 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 952.9

Radius: 14.9

Gravity: 4.29 G

Time & Orbit

Eccentricity (e): 0.192

Orbit Range: 0.69 AU - 1.03 AU

Year: 523 Days

Day: 14.8 Hours

Environment

Temp: -147 °C

Axial Tilt: 36.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 80,077,691 km

• M1: 185,352 km (0.05 R)
• M2: 854,952 km (0.106 R)
• M3: 1,386,623 km (0.068 R)
• M4: 2,153,162 km (0.107 R)
• M5: 2,667,629 km (0.087 R)
• M6: 3,351,890 km (0.098 R)
• M7: 4,481,055 km (0.052 R)
• M8: 5,042,047 km (0.081 R)
• M9: 6,424,181 km (0.118 R)
• M10: 6,992,803 km (0.08 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.33 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 748.2

Radius: 14.4

Gravity: 3.61 G

Time & Orbit

Eccentricity (e): 0.194

Orbit Range: 1.88 AU - 2.78 AU

Year: 2333 Days

Day: 8 Hours

Environment

Temp: -185 °C

Axial Tilt: 39.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 80,077,691 km

• M1: 184,903 km (0.097 R)
• M2: 907,311 km (0.112 R)
• M3: 1,683,275 km (0.12 R)
• M4: 2,152,414 km (0.077 R)
• M5: 3,080,669 km (0.099 R)
• M6: 3,984,689 km (0.069 R)
• M7: 4,856,545 km (0.114 R)
• M8: 5,362,186 km (0.05 R)
• M9: 5,852,418 km (0.114 R)
• M10: 7,506,522 km (0.084 R)
• M11: 8,871,154 km (0.084 R)
• M12: 11,438,403 km (0.083 R)
• M13: 13,022,794 km (0.065 R)
• M14: 13,822,544 km (0.113 R)
• M15: 14,702,030 km (0.039 R)
• M16: 15,228,016 km (0.041 R)
• M17: 15,865,901 km (0.118 R)

Planet 6 - Gas Giant

Semi-Major Axis: 4.96 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 165.1

Radius: 10.6

Gravity: 1.47 G

Time & Orbit

Eccentricity (e): 0.165

Orbit Range: 4.14 AU - 5.78 AU

Year: 7247 Days

Day: 10.5 Hours

Environment

Temp: -208 °C

Axial Tilt: 13.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 80,077,691 km

• M1: 132,544 km (0.037 R)
• M2: 533,316 km (0.09 R)
• M3: 901,477 km (0.098 R)
• M4: 1,363,884 km (0.088 R)
• M5: 2,538,227 km (0.071 R)
• M6: 2,896,215 km (0.051 R)
• M7: 3,401,108 km (0.088 R)
• M8: 4,753,622 km (0.118 R)
• M9: 8,306,123 km (0.114 R)
• M10: 11,665,492 km (0.056 R)
• M11: 12,851,504 km (0.05 R)
• M12: 14,216,734 km (0.071 R)
• M13: 14,623,940 km (0.077 R)
• M14: 20,330,201 km (0.055 R)
• M15: 20,978,259 km (0.104 R)

Planet 7 - Ice Giant

Semi-Major Axis: 6.76 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 101.5

Radius: 4

Gravity: 6.34 G

Time & Orbit

Eccentricity (e): 0.239

Orbit Range: 5.14 AU - 8.38 AU

Year: 11530 Days

Day: 17.3 Hours

Environment

Temp: -231 °C

Axial Tilt: 19.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 80,077,691 km

• M1: 49,816 km (0.112 R)
• M2: 191,336 km (0.051 R)
• M3: 489,933 km (0.113 R)
• M4: 694,284 km (0.12 R)
• M5: 911,649 km (0.114 R)
• M6: 2,097,661 km (0.086 R)
• M7: 2,453,704 km (0.089 R)
• M8: 3,285,169 km (0.074 R)
• M9: 4,147,751 km (0.076 R)
• M10: 6,814,033 km (0.072 R)
• M11: 9,037,357 km (0.054 R)
• M12: 9,436,035 km (0.066 R)
• M13: 11,888,992 km (0.111 R)
• M14: 12,908,800 km (0.12 R)
• M15: 13,828,079 km (0.058 R)
• M16: 14,091,072 km (0.081 R)
• M17: 24,221,840 km (0.077 R)

Planet 8 - Ice Giant

Semi-Major Axis: 8.64 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 386.6

Radius: 6.8

Gravity: 8.36 G

Time & Orbit

Eccentricity (e): 0.186

Orbit Range: 7.03 AU - 10.25 AU

Year: 16660 Days

Day: 22.8 Hours

Environment

Temp: -223 °C

Axial Tilt: 48.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (35)

Outer Limit: 80,077,691 km

• M1: 84,523 km (0.075 R)
• M2: 329,714 km (0.077 R)
• M3: 743,352 km (0.042 R)
• M4: 1,017,116 km (0.063 R)
• M5: 1,240,615 km (0.091 R)
• M6: 1,615,507 km (0.062 R)
• M7: 2,467,766 km (0.091 R)
• M8: 2,900,104 km (0.082 R)
• M9: 3,134,524 km (0.086 R)
• M10: 3,831,949 km (0.091 R)
• M11: 4,381,722 km (0.088 R)
• M12: 5,818,759 km (0.119 R)
• M13: 6,544,159 km (0.068 R)
• M14: 6,826,151 km (0.102 R)
• M15: 7,676,914 km (0.03 R)
• M16: 9,181,869 km (0.049 R)
• M17: 10,929,620 km (0.052 R)
• M18: 11,212,660 km (0.088 R)
• M19: 12,090,799 km (0.077 R)
• M20: 12,515,807 km (0.092 R)
• M21: 14,182,626 km (0.114 R)
• M22: 14,861,501 km (0.095 R)
• M23: 17,255,366 km (0.109 R)
• M24: 17,484,999 km (0.047 R)
• M25: 19,313,833 km (0.049 R)
• M26: 19,894,722 km (0.041 R)
• M27: 20,231,915 km (0.112 R)
• M28: 24,677,814 km (0.103 R)
• M29: 26,462,068 km (0.06 R)
• M30: 27,282,014 km (0.054 R)
• M31: 27,698,345 km (0.115 R)
• M32: 32,097,121 km (0.1 R)
• M33: 41,011,957 km (0.046 R)
• M34: 52,881,800 km (0.073 R)
• M35: 53,854,485 km (0.09 R)

Planet 9 - Ice Giant

Semi-Major Axis: 9.13 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 975.2

Radius: 4

Gravity: 60.95 G

Time & Orbit

Eccentricity (e): 0.09

Orbit Range: 8.31 AU - 9.95 AU

Year: 18097 Days

Day: 15.1 Hours

Environment

Temp: -231 °C

Axial Tilt: 36.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (34)

Outer Limit: 80,077,691 km

• M1: 49,816 km (0.105 R)
• M2: 288,724 km (0.109 R)
• M3: 524,341 km (0.07 R)
• M4: 769,980 km (0.114 R)
• M5: 1,061,995 km (0.102 R)
• M6: 1,573,022 km (0.051 R)
• M7: 2,873,775 km (0.094 R)
• M8: 3,599,923 km (0.095 R)
• M9: 4,616,740 km (0.119 R)
• M10: 5,019,457 km (0.035 R)
• M11: 5,728,402 km (0.113 R)
• M12: 6,412,513 km (0.091 R)
• M13: 6,866,841 km (0.058 R)
• M14: 7,489,169 km (0.026 R)
• M15: 9,933,747 km (0.115 R)
• M16: 10,917,353 km (0.051 R)
• M17: 11,696,310 km (0.11 R)
• M18: 14,407,322 km (0.119 R)
• M19: 18,574,221 km (0.113 R)
• M20: 23,584,404 km (0.065 R)
• M21: 32,216,799 km (0.08 R)
• M22: 32,479,044 km (0.034 R)
• M23: 33,542,087 km (0.084 R)
• M24: 38,173,487 km (0.031 R)
• M25: 39,058,807 km (0.093 R)
• M26: 42,737,568 km (0.086 R)
• M27: 43,372,312 km (0.096 R)
• M28: 44,013,339 km (0.109 R)
• M29: 45,643,507 km (0.059 R)
• M30: 48,678,399 km (0.118 R)
• M31: 50,244,988 km (0.12 R)
• M32: 62,569,908 km (0.083 R)
• M33: 62,773,810 km (0.094 R)
• M34: 74,681,800 km (0.07 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: 408 - 16,445 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit