🌌 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: 0.64 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.18

Radius: 0.5

Gravity: 0.72 G

Time & Orbit

Eccentricity (e): 0.136

Orbit Range: 0.55 AU - 0.73 AU

Year: 326 Days

Day: 12.6 Hours

Environment

Temp: -122 °C

Axial Tilt: 38.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 69,935,763 km

• M1: 12,865 km (0.111 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.64 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.55

Radius: 1.83

Gravity: 1.36 G

Time & Orbit

Eccentricity (e): 0.073

Orbit Range: 0.59 AU - 0.69 AU

Year: 326 Days

Day: 25.3 Hours

Environment

Temp: -126 °C

Axial Tilt: 12.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 1 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 468.4

Radius: 10.1

Gravity: 4.59 G

Time & Orbit

Eccentricity (e): 0.175

Orbit Range: 0.83 AU - 1.18 AU

Year: 636 Days

Day: 13 Hours

Environment

Temp: -157 °C

Axial Tilt: 2.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 69,935,763 km

• M1: 125,662 km (0.114 R)
• M2: 493,523 km (0.107 R)
• M3: 869,463 km (0.085 R)
• M4: 1,348,176 km (0.109 R)
• M5: 1,815,969 km (0.098 R)
• M6: 2,409,423 km (0.108 R)
• M7: 3,392,730 km (0.114 R)
• M8: 3,712,421 km (0.109 R)
• M9: 4,066,369 km (0.09 R)
• M10: 4,487,787 km (0.093 R)
• M11: 5,435,639 km (0.076 R)
• M12: 5,749,944 km (0.096 R)
• M13: 6,338,911 km (0.074 R)
• M14: 6,687,623 km (0.111 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.69 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 287.1

Radius: 14.5

Gravity: 1.37 G

Time & Orbit

Eccentricity (e): 0.242

Orbit Range: 1.28 AU - 2.1 AU

Year: 1397 Days

Day: 12.2 Hours

Environment

Temp: -179 °C

Axial Tilt: 12.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 69,935,763 km

• M1: 182,958 km (0.07 R)
• M2: 704,456 km (0.047 R)
• M3: 1,689,259 km (0.078 R)
• M4: 2,494,096 km (0.084 R)
• M5: 3,160,255 km (0.119 R)
• M6: 3,958,659 km (0.116 R)
• M7: 4,540,744 km (0.089 R)
• M8: 5,898,345 km (0.117 R)
• M9: 7,852,542 km (0.107 R)
• M10: 8,696,723 km (0.047 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.54 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 485.1

Radius: 12.5

Gravity: 3.1 G

Time & Orbit

Eccentricity (e): 0.247

Orbit Range: 1.91 AU - 3.17 AU

Year: 2574 Days

Day: 13.5 Hours

Environment

Temp: -206 °C

Axial Tilt: 13.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 69,935,763 km

• M1: 157,826 km (0.079 R)
• M2: 627,264 km (0.091 R)
• M3: 1,424,770 km (0.07 R)
• M4: 2,134,313 km (0.085 R)
• M5: 2,959,495 km (0.116 R)
• M6: 4,025,080 km (0.097 R)
• M7: 4,625,566 km (0.052 R)
• M8: 5,590,024 km (0.106 R)
• M9: 6,287,299 km (0.085 R)
• M10: 9,395,793 km (0.062 R)
• M11: 12,770,123 km (0.098 R)
• M12: 14,204,318 km (0.087 R)
• M13: 16,132,485 km (0.096 R)
• M14: 16,829,312 km (0.095 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.84 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 29.2

Radius: 11

Gravity: 0.24 G

Time & Orbit

Eccentricity (e): 0.175

Orbit Range: 2.34 AU - 3.34 AU

Year: 3043 Days

Day: 9.5 Hours

Environment

Temp: -198 °C

Axial Tilt: 49.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 69,935,763 km

• M1: 136,732 km (0.111 R)
• M2: 522,845 km (0.112 R)
• M3: 918,980 km (0.103 R)
• M4: 1,970,354 km (0.047 R)
• M5: 2,913,269 km (0.087 R)
• M6: 3,519,589 km (0.069 R)
• M7: 6,434,204 km (0.079 R)
• M8: 7,376,372 km (0.105 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.62 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 324.3

Radius: 8

Gravity: 5.07 G

Time & Orbit

Eccentricity (e): 0.234

Orbit Range: 2.77 AU - 4.47 AU

Year: 4379 Days

Day: 10.8 Hours

Environment

Temp: -199 °C

Axial Tilt: 16.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 69,935,763 km

• M1: 100,081 km (0.116 R)
• M2: 367,263 km (0.084 R)
• M3: 622,477 km (0.073 R)
• M4: 1,010,982 km (0.073 R)
• M5: 1,342,342 km (0.057 R)
• M6: 2,576,375 km (0.072 R)
• M7: 4,571,113 km (0.033 R)
• M8: 5,461,519 km (0.101 R)
• M9: 5,747,251 km (0.092 R)
• M10: 6,349,083 km (0.06 R)
• M11: 7,645,498 km (0.088 R)
• M12: 8,203,947 km (0.057 R)
• M13: 8,930,843 km (0.103 R)
• M14: 9,218,819 km (0.09 R)
• M15: 11,538,035 km (0.067 R)
• M16: 12,628,753 km (0.114 R)
• M17: 13,502,554 km (0.101 R)
• M18: 13,786,790 km (0.086 R)
• M19: 17,459,717 km (0.088 R)
• M20: 20,097,576 km (0.07 R)
• M21: 20,655,427 km (0.109 R)

Planet 8 - Ice Giant

Semi-Major Axis: 6.88 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 581.4

Radius: 7.9

Gravity: 9.32 G

Time & Orbit

Eccentricity (e): 0.14

Orbit Range: 5.92 AU - 7.84 AU

Year: 11474 Days

Day: 24.8 Hours

Environment

Temp: -226 °C

Axial Tilt: 39.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 69,935,763 km

• M1: 98,286 km (0.111 R)
• M2: 412,591 km (0.062 R)
• M3: 1,032,525 km (0.044 R)
• M4: 2,552,140 km (0.095 R)
• M5: 2,909,080 km (0.12 R)
• M6: 3,251,510 km (0.108 R)
• M7: 3,646,299 km (0.073 R)
• M8: 4,443,356 km (0.079 R)
• M9: 6,046,447 km (0.093 R)
• M10: 9,291,524 km (0.103 R)
• M11: 11,365,997 km (0.101 R)
• M12: 12,217,808 km (0.118 R)
• M13: 13,356,995 km (0.118 R)
• M14: 15,707,178 km (0.086 R)
• M15: 18,016,072 km (0.041 R)
• M16: 18,472,943 km (0.103 R)
• M17: 23,565,405 km (0.047 R)
• M18: 35,687,320 km (0.061 R)
• M19: 36,046,355 km (0.032 R)
• M20: 38,251,727 km (0.117 R)
• M21: 40,156,856 km (0.085 R)
• M22: 43,607,630 km (0.105 R)

Planet 9 - Ice Giant

Semi-Major Axis: 8.12 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 983

Radius: 3.8

Gravity: 68.07 G

Time & Orbit

Eccentricity (e): 0.047

Orbit Range: 7.74 AU - 8.5 AU

Year: 14712 Days

Day: 23.1 Hours

Environment

Temp: -231 °C

Axial Tilt: 17.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (36)

Outer Limit: 69,935,763 km

• M1: 47,423 km (0.084 R)
• M2: 190,438 km (0.098 R)
• M3: 685,308 km (0.091 R)
• M4: 989,440 km (0.101 R)
• M5: 1,362,687 km (0.048 R)
• M6: 1,934,300 km (0.107 R)
• M7: 2,069,387 km (0.103 R)
• M8: 3,882,214 km (0.066 R)
• M9: 4,486,590 km (0.12 R)
• M10: 4,689,893 km (0.118 R)
• M11: 6,501,075 km (0.119 R)
• M12: 7,029,006 km (0.067 R)
• M13: 7,680,205 km (0.097 R)
• M14: 8,421,463 km (0.112 R)
• M15: 9,047,978 km (0.061 R)
• M16: 9,593,412 km (0.118 R)
• M17: 10,102,643 km (0.084 R)
• M18: 10,334,670 km (0.105 R)
• M19: 10,869,781 km (0.119 R)
• M20: 11,674,917 km (0.119 R)
• M21: 15,832,691 km (0.096 R)
• M22: 16,067,111 km (0.09 R)
• M23: 18,540,412 km (0.065 R)
• M24: 19,776,839 km (0.08 R)
• M25: 20,323,170 km (0.103 R)
• M26: 21,255,913 km (0.082 R)
• M27: 24,955,618 km (0.113 R)
• M28: 26,460,423 km (0.09 R)
• M29: 32,579,275 km (0.103 R)
• M30: 32,705,386 km (0.081 R)
• M31: 33,597,139 km (0.049 R)
• M32: 45,123,355 km (0.105 R)
• M33: 55,900,685 km (0.118 R)
• M34: 57,910,533 km (0.112 R)
• M35: 59,026,832 km (0.096 R)
• M36: 59,214,278 km (0.08 R)

Kuiper Belt

Range: 30 - 46 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 229 - 13,175 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit