🌌 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: 0.66 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.79

Radius: 1.51

Gravity: 1.22 G

Time & Orbit

Eccentricity (e): 0.008

Orbit Range: 0.65 AU - 0.67 AU

Year: 346 Days

Day: 40.1 Hours

Environment

Temp: -129 °C

Axial Tilt: 37.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.97 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 49.7

Radius: 8.6

Gravity: 0.67 G

Time & Orbit

Eccentricity (e): 0.191

Orbit Range: 0.78 AU - 1.16 AU

Year: 617 Days

Day: 13.7 Hours

Environment

Temp: -149 °C

Axial Tilt: 17.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 25,680,540 km

• M1: 107,262 km (0.099 R)
• M2: 398,379 km (0.086 R)
• M3: 673,938 km (0.067 R)
• M4: 1,071,570 km (0.092 R)
• M5: 1,414,448 km (0.108 R)
• M6: 1,696,889 km (0.065 R)
• M7: 2,175,003 km (0.09 R)
• M8: 2,674,960 km (0.11 R)
• M9: 3,067,205 km (0.086 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.8 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 836.8

Radius: 10.6

Gravity: 7.45 G

Time & Orbit

Eccentricity (e): 0.053

Orbit Range: 1.7 AU - 1.9 AU

Year: 1559 Days

Day: 12.9 Hours

Environment

Temp: -191 °C

Axial Tilt: 23.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 25,680,540 km

• M1: 131,796 km (0.119 R)
• M2: 468,840 km (0.071 R)
• M3: 964,906 km (0.102 R)
• M4: 1,738,626 km (0.063 R)
• M5: 2,200,585 km (0.085 R)
• M6: 3,002,429 km (0.101 R)
• M7: 3,520,786 km (0.095 R)
• M8: 4,135,035 km (0.048 R)
• M9: 5,049,527 km (0.102 R)
• M10: 6,641,397 km (0.119 R)
• M11: 7,608,249 km (0.08 R)
• M12: 10,964,776 km (0.105 R)
• M13: 11,365,549 km (0.094 R)
• M14: 11,776,045 km (0.106 R)
• M15: 13,026,833 km (0.026 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.21 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 186.5

Radius: 8.4

Gravity: 2.64 G

Time & Orbit

Eccentricity (e): 0.132

Orbit Range: 1.92 AU - 2.5 AU

Year: 2121 Days

Day: 13.2 Hours

Environment

Temp: -203 °C

Axial Tilt: 19.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 25,680,540 km

• M1: 108,608 km (0.074 R)
• M2: 371,452 km (0.09 R)
• M3: 768,783 km (0.058 R)
• M4: 1,353,113 km (0.1 R)
• M5: 1,697,337 km (0.078 R)
• M6: 2,068,191 km (0.115 R)
• M7: 2,352,427 km (0.118 R)
• M8: 3,000,784 km (0.05 R)
• M9: 3,279,933 km (0.072 R)
• M10: 3,684,596 km (0.08 R)
• M11: 4,415,232 km (0.032 R)
• M12: 5,101,437 km (0.071 R)
• M13: 5,501,013 km (0.095 R)
• M14: 6,897,808 km (0.104 R)
• M15: 8,057,192 km (0.097 R)
• M16: 9,548,383 km (0.064 R)
• M17: 10,437,892 km (0.091 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.98 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 825.7

Radius: 11.2

Gravity: 6.58 G

Time & Orbit

Eccentricity (e): 0.188

Orbit Range: 3.23 AU - 4.73 AU

Year: 5127 Days

Day: 6.2 Hours

Environment

Temp: -215 °C

Axial Tilt: 15.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 25,680,540 km

• M1: 139,276 km (0.109 R)
• M2: 744,848 km (0.113 R)
• M3: 2,025,106 km (0.092 R)
• M4: 2,873,326 km (0.092 R)
• M5: 3,265,273 km (0.055 R)
• M6: 3,920,661 km (0.085 R)
• M7: 4,329,662 km (0.101 R)
• M8: 4,793,864 km (0.095 R)
• M9: 6,720,385 km (0.109 R)
• M10: 8,431,037 km (0.092 R)
• M11: 9,116,195 km (0.106 R)
• M12: 10,968,067 km (0.12 R)
• M13: 13,865,927 km (0.093 R)
• M14: 14,253,984 km (0.114 R)
• M15: 18,343,093 km (0.107 R)
• M16: 20,547,417 km (0.094 R)

Planet 6 - Ice Giant

Semi-Major Axis: 7.75 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 48.2

Radius: 6.7

Gravity: 1.07 G

Time & Orbit

Eccentricity (e): 0

Orbit Range: 7.75 AU - 7.75 AU

Year: 13931 Days

Day: 15.5 Hours

Environment

Temp: -218 °C

Axial Tilt: 15.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 25,680,540 km

• M1: 88,412 km (0.045 R)
• M2: 1,067,381 km (0.108 R)
• M3: 1,599,351 km (0.07 R)
• M4: 2,080,458 km (0.108 R)
• M5: 6,653,664 km (0.089 R)
• M6: 7,187,878 km (0.056 R)
• M7: 7,955,615 km (0.067 R)
• M8: 8,593,500 km (0.113 R)
• M9: 11,578,426 km (0.034 R)
• M10: 16,676,423 km (0.098 R)

Planet 7 - Ice Giant

Semi-Major Axis: 9.2 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 990.6

Radius: 6.7

Gravity: 22.07 G

Time & Orbit

Eccentricity (e): 0.216

Orbit Range: 7.21 AU - 11.19 AU

Year: 18018 Days

Day: 19 Hours

Environment

Temp: -231 °C

Axial Tilt: 25.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (27)

Outer Limit: 25,680,540 km

• M1: 89,310 km (0.101 R)
• M2: 1,150,707 km (0.114 R)
• M3: 1,366,427 km (0.118 R)
• M4: 2,835,628 km (0.095 R)
• M5: 3,855,287 km (0.047 R)
• M6: 4,144,459 km (0.038 R)
• M7: 4,694,531 km (0.057 R)
• M8: 5,024,693 km (0.114 R)
• M9: 7,536,591 km (0.066 R)
• M10: 8,092,796 km (0.101 R)
• M11: 8,407,550 km (0.112 R)
• M12: 8,894,940 km (0.092 R)
• M13: 10,781,519 km (0.114 R)
• M14: 12,708,339 km (0.074 R)
• M15: 13,062,288 km (0.083 R)
• M16: 13,495,673 km (0.085 R)
• M17: 14,853,573 km (0.084 R)
• M18: 15,726,775 km (0.105 R)
• M19: 21,697,974 km (0.079 R)
• M20: 33,908,003 km (0.085 R)
• M21: 36,829,500 km (0.044 R)
• M22: 46,928,852 km (0.091 R)
• M23: 50,548,522 km (0.081 R)
• M24: 55,658,337 km (0.072 R)
• M25: 58,143,606 km (0.118 R)
• M26: 73,485,167 km (0.087 R)
• M27: 75,545,279 km (0.096 R)

Planet 8 - Ice Giant

Semi-Major Axis: 9.88 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 26.2

Radius: 4.1

Gravity: 1.56 G

Time & Orbit

Eccentricity (e): 0.003

Orbit Range: 9.85 AU - 9.91 AU

Year: 20052 Days

Day: 19.2 Hours

Environment

Temp: -235 °C

Axial Tilt: 25.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 25,680,540 km

• M1: 93,050 km (0.044 R)
• M2: 249,978 km (0.083 R)
• M3: 2,867,791 km (0.11 R)
• M4: 4,291,963 km (0.112 R)
• M5: 5,476,928 km (0.059 R)
• M6: 7,187,430 km (0.102 R)
• M7: 8,470,531 km (0.05 R)
• M8: 9,697,084 km (0.103 R)

Kuiper Belt

Range: 30 - 55 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 536 - 12,881 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit