🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.28 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.55 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.7

Radius: 0.87

Gravity: 0.92 G

Time & Orbit

Eccentricity (e): 0.18

Orbit Range: 0.45 AU - 0.65 AU

Year: 263 Days

Day: 36.8 Hours

Environment

Temp: -130 °C

Axial Tilt: 3.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.59 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.67

Radius: 1.23

Gravity: 1.1 G

Time & Orbit

Eccentricity (e): 0.119

Orbit Range: 0.52 AU - 0.66 AU

Year: 293 Days

Day: 29 Hours

Environment

Temp: -121 °C

Axial Tilt: 34.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 85,253,584 km

• M1: 51,013 km (0.116 R)
• M2: 171,888 km (0.097 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.97 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 731.2

Radius: 8.4

Gravity: 10.36 G

Time & Orbit

Eccentricity (e): 0.004

Orbit Range: 0.97 AU - 0.97 AU

Year: 617 Days

Day: 5.5 Hours

Environment

Temp: -160 °C

Axial Tilt: 86.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 85,253,584 km

• M1: 104,419 km (0.094 R)
• M2: 414,237 km (0.085 R)
• M3: 679,474 km (0.055 R)
• M4: 959,670 km (0.101 R)
• M5: 1,345,782 km (0.097 R)
• M6: 1,709,455 km (0.085 R)
• M7: 2,081,804 km (0.091 R)
• M8: 2,424,383 km (0.119 R)
• M9: 2,920,001 km (0.093 R)
• M10: 3,223,535 km (0.114 R)
• M11: 3,508,070 km (0.087 R)
• M12: 4,068,912 km (0.096 R)
• M13: 4,819,146 km (0.11 R)
• M14: 5,297,709 km (0.118 R)
• M15: 6,551,489 km (0.114 R)
• M16: 6,904,091 km (0.04 R)

Planet 4 - Gas Giant

Semi-Major Axis: 4.01 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 292.9

Radius: 10.2

Gravity: 2.82 G

Time & Orbit

Eccentricity (e): 0.171

Orbit Range: 3.32 AU - 4.7 AU

Year: 5185 Days

Day: 6.9 Hours

Environment

Temp: -209 °C

Axial Tilt: 112.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 85,253,584 km

• M1: 128,056 km (0.091 R)
• M2: 740,210 km (0.056 R)
• M3: 1,226,403 km (0.106 R)
• M4: 2,047,995 km (0.076 R)
• M5: 2,457,444 km (0.117 R)
• M6: 3,165,491 km (0.11 R)
• M7: 3,817,438 km (0.116 R)
• M8: 5,439,977 km (0.042 R)
• M9: 7,160,801 km (0.117 R)
• M10: 7,511,907 km (0.079 R)
• M11: 8,145,604 km (0.108 R)
• M12: 8,563,880 km (0.054 R)
• M13: 8,959,865 km (0.075 R)
• M14: 9,634,252 km (0.05 R)
• M15: 13,189,595 km (0.093 R)
• M16: 19,812,293 km (0.085 R)
• M17: 21,347,167 km (0.107 R)

Planet 5 - Gas Giant

Semi-Major Axis: 4.08 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 704.3

Radius: 12.2

Gravity: 4.73 G

Time & Orbit

Eccentricity (e): 0.054

Orbit Range: 3.86 AU - 4.3 AU

Year: 5321 Days

Day: 11.8 Hours

Environment

Temp: -204 °C

Axial Tilt: 40 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 85,253,584 km

• M1: 151,692 km (0.11 R)
• M2: 760,256 km (0.118 R)
• M3: 2,205,671 km (0.085 R)
• M4: 4,445,151 km (0.111 R)
• M5: 6,288,646 km (0.078 R)
• M6: 7,118,315 km (0.116 R)
• M7: 7,578,030 km (0.078 R)
• M8: 9,703,367 km (0.082 R)
• M9: 12,100,673 km (0.099 R)
• M10: 12,603,321 km (0.08 R)
• M11: 13,489,988 km (0.053 R)
• M12: 14,642,041 km (0.037 R)
• M13: 16,218,204 km (0.102 R)
• M14: 18,757,479 km (0.061 R)
• M15: 20,472,768 km (0.06 R)
• M16: 21,187,397 km (0.075 R)
• M17: 21,697,526 km (0.118 R)
• M18: 22,141,233 km (0.08 R)
• M19: 23,898,559 km (0.09 R)
• M20: 24,610,944 km (0.073 R)
• M21: 27,344,546 km (0.083 R)
• M22: 31,578,914 km (0.11 R)

Planet 6 - Gas Giant

Semi-Major Axis: 4.72 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 882.1

Radius: 14.3

Gravity: 4.31 G

Time & Orbit

Eccentricity (e): 0.038

Orbit Range: 4.54 AU - 4.9 AU

Year: 6621 Days

Day: 8.7 Hours

Environment

Temp: -219 °C

Axial Tilt: 91.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (27)

Outer Limit: 85,253,584 km

• M1: 179,817 km (0.036 R)
• M2: 863,030 km (0.047 R)
• M3: 1,352,664 km (0.113 R)
• M4: 1,811,331 km (0.091 R)
• M5: 2,428,422 km (0.09 R)
• M6: 3,248,219 km (0.119 R)
• M7: 3,700,154 km (0.095 R)
• M8: 4,512,021 km (0.071 R)
• M9: 5,019,308 km (0.101 R)
• M10: 7,481,390 km (0.102 R)
• M11: 9,262,053 km (0.046 R)
• M12: 9,992,091 km (0.088 R)
• M13: 11,209,518 km (0.11 R)
• M14: 12,578,189 km (0.105 R)
• M15: 15,709,572 km (0.089 R)
• M16: 16,419,413 km (0.064 R)
• M17: 18,252,586 km (0.106 R)
• M18: 21,214,175 km (0.103 R)
• M19: 22,322,545 km (0.096 R)
• M20: 23,636,015 km (0.117 R)
• M21: 25,000,647 km (0.1 R)
• M22: 26,507,247 km (0.061 R)
• M23: 27,792,891 km (0.101 R)
• M24: 29,119,674 km (0.106 R)
• M25: 29,603,773 km (0.098 R)
• M26: 30,389,162 km (0.047 R)
• M27: 33,248,426 km (0.038 R)

Planet 7 - Ice Giant

Semi-Major Axis: 7.28 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 75.2

Radius: 7.9

Gravity: 1.2 G

Time & Orbit

Eccentricity (e): 0.123

Orbit Range: 6.38 AU - 8.18 AU

Year: 12683 Days

Day: 22.5 Hours

Environment

Temp: -230 °C

Axial Tilt: 5.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 85,253,584 km

• M1: 98,435 km (0.101 R)
• M2: 411,693 km (0.054 R)
• M3: 680,072 km (0.04 R)
• M4: 1,379,891 km (0.11 R)
• M5: 1,627,326 km (0.097 R)
• M6: 2,155,107 km (0.033 R)
• M7: 4,678,673 km (0.115 R)
• M8: 6,209,808 km (0.061 R)
• M9: 6,608,187 km (0.067 R)
• M10: 11,132,625 km (0.093 R)
• M11: 12,764,289 km (0.098 R)
• M12: 16,436,916 km (0.103 R)
• M13: 18,481,919 km (0.103 R)
• M14: 20,894,035 km (0.111 R)

Planet 8 - Ice Giant

Semi-Major Axis: 10.55 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 787.3

Radius: 7.9

Gravity: 12.61 G

Time & Orbit

Eccentricity (e): 0.151

Orbit Range: 8.96 AU - 12.14 AU

Year: 22126 Days

Day: 20.4 Hours

Environment

Temp: -240 °C

Axial Tilt: 34.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (34)

Outer Limit: 85,253,584 km

• M1: 98,286 km (0.077 R)
• M2: 487,839 km (0.116 R)
• M3: 853,605 km (0.114 R)
• M4: 1,577,659 km (0.108 R)
• M5: 2,759,782 km (0.111 R)
• M6: 4,845,026 km (0.045 R)
• M7: 5,227,698 km (0.054 R)
• M8: 8,715,572 km (0.11 R)
• M9: 8,995,918 km (0.112 R)
• M10: 10,239,825 km (0.077 R)
• M11: 11,000,231 km (0.111 R)
• M12: 12,071,800 km (0.09 R)
• M13: 14,655,954 km (0.049 R)
• M14: 14,972,952 km (0.11 R)
• M15: 15,375,669 km (0.08 R)
• M16: 16,627,355 km (0.116 R)
• M17: 18,676,397 km (0.078 R)
• M18: 21,289,871 km (0.026 R)
• M19: 23,054,977 km (0.097 R)
• M20: 26,521,010 km (0.09 R)
• M21: 28,316,483 km (0.104 R)
• M22: 32,953,569 km (0.113 R)
• M23: 33,772,617 km (0.049 R)
• M24: 34,605,279 km (0.091 R)
• M25: 36,311,293 km (0.043 R)
• M26: 37,923,808 km (0.028 R)
• M27: 40,353,726 km (0.116 R)
• M28: 43,047,086 km (0.101 R)
• M29: 53,509,513 km (0.112 R)
• M30: 59,525,142 km (0.099 R)
• M31: 60,943,181 km (0.076 R)
• M32: 64,905,579 km (0.065 R)
• M33: 67,494,670 km (0.116 R)
• M34: 75,202,999 km (0.091 R)

Kuiper Belt

Range: 30 - 50 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 280 - 16,610 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit