🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.5 AU

Composition

Type: Main (Rocky/Icy Mix)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Gas Giant

Semi-Major Axis: 0.99 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 142.8

Radius: 12.6

Gravity: 0.9 G

Time & Orbit

Eccentricity (e): 0.243

Orbit Range: 0.75 AU - 1.23 AU

Year: 680 Days

Day: 13.5 Hours

Environment

Temp: -184 °C

Axial Tilt: 38.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 44,172,449 km

• M1: 156,928 km (0.094 R)
• M2: 554,709 km (0.115 R)
• M3: 1,026,989 km (0.104 R)
• M4: 1,602,492 km (0.094 R)
• M5: 2,095,717 km (0.116 R)
• M6: 2,746,019 km (0.119 R)
• M7: 3,150,531 km (0.092 R)
• M8: 4,360,778 km (0.119 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.99 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 75.4

Radius: 8.9

Gravity: 0.95 G

Time & Orbit

Eccentricity (e): 0.02

Orbit Range: 0.97 AU - 1.01 AU

Year: 680 Days

Day: 11.7 Hours

Environment

Temp: -183 °C

Axial Tilt: 34.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 44,172,449 km

• M1: 110,852 km (0.11 R)
• M2: 673,340 km (0.093 R)
• M3: 1,379,891 km (0.046 R)
• M4: 1,977,833 km (0.107 R)
• M5: 2,328,940 km (0.094 R)
• M6: 2,608,688 km (0.071 R)
• M7: 3,187,332 km (0.064 R)
• M8: 3,618,922 km (0.116 R)

Planet 3 - Gas Giant

Semi-Major Axis: 2.08 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 880.8

Radius: 14

Gravity: 4.49 G

Time & Orbit

Eccentricity (e): 0.051

Orbit Range: 1.97 AU - 2.19 AU

Year: 2071 Days

Day: 6.1 Hours

Environment

Temp: -204 °C

Axial Tilt: 13.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 44,172,449 km

• M1: 174,132 km (0.09 R)
• M2: 1,024,147 km (0.08 R)
• M3: 1,661,434 km (0.113 R)
• M4: 2,446,374 km (0.081 R)
• M5: 3,681,454 km (0.113 R)
• M6: 4,275,507 km (0.038 R)
• M7: 6,478,635 km (0.043 R)
• M8: 7,378,017 km (0.118 R)
• M9: 8,848,116 km (0.095 R)
• M10: 9,991,642 km (0.027 R)
• M11: 11,547,160 km (0.109 R)
• M12: 14,754,988 km (0.095 R)
• M13: 15,862,610 km (0.11 R)

Planet 4 - Gas Giant

Semi-Major Axis: 3.82 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 235.7

Radius: 8.6

Gravity: 3.19 G

Time & Orbit

Eccentricity (e): 0.222

Orbit Range: 2.97 AU - 4.67 AU

Year: 5154 Days

Day: 11.5 Hours

Environment

Temp: -222 °C

Axial Tilt: 36.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 44,172,449 km

• M1: 107,262 km (0.096 R)
• M2: 734,675 km (0.045 R)
• M3: 1,203,964 km (0.115 R)
• M4: 1,863,092 km (0.118 R)
• M5: 2,170,964 km (0.071 R)
• M6: 2,453,255 km (0.116 R)
• M7: 3,110,289 km (0.117 R)
• M8: 4,191,134 km (0.07 R)
• M9: 5,104,130 km (0.097 R)
• M10: 10,145,877 km (0.11 R)
• M11: 11,736,851 km (0.11 R)
• M12: 12,794,807 km (0.056 R)
• M13: 14,011,337 km (0.057 R)
• M14: 21,269,825 km (0.06 R)

Planet 5 - Ice Giant

Semi-Major Axis: 5.83 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 988.1

Radius: 6.4

Gravity: 24.12 G

Time & Orbit

Eccentricity (e): 0.156

Orbit Range: 4.92 AU - 6.74 AU

Year: 9717 Days

Day: 16.4 Hours

Environment

Temp: -237 °C

Axial Tilt: 20.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (34)

Outer Limit: 44,172,449 km

• M1: 79,586 km (0.116 R)
• M2: 284,834 km (0.093 R)
• M3: 536,608 km (0.062 R)
• M4: 794,813 km (0.11 R)
• M5: 1,044,642 km (0.058 R)
• M6: 1,675,347 km (0.068 R)
• M7: 1,917,546 km (0.111 R)
• M8: 2,413,163 km (0.109 R)
• M9: 3,013,649 km (0.107 R)
• M10: 3,250,762 km (0.12 R)
• M11: 3,656,322 km (0.118 R)
• M12: 5,448,055 km (0.092 R)
• M13: 7,158,408 km (0.077 R)
• M14: 7,496,050 km (0.118 R)
• M15: 8,762,396 km (0.052 R)
• M16: 9,396,242 km (0.096 R)
• M17: 10,430,562 km (0.111 R)
• M18: 11,481,487 km (0.092 R)
• M19: 11,711,419 km (0.089 R)
• M20: 13,792,026 km (0.118 R)
• M21: 14,315,170 km (0.056 R)
• M22: 14,783,710 km (0.12 R)
• M23: 15,680,849 km (0.107 R)
• M24: 16,107,053 km (0.04 R)
• M25: 17,965,956 km (0.06 R)
• M26: 20,296,242 km (0.062 R)
• M27: 26,836,362 km (0.027 R)
• M28: 28,273,100 km (0.082 R)
• M29: 29,330,308 km (0.062 R)
• M30: 30,413,546 km (0.102 R)
• M31: 31,523,263 km (0.044 R)
• M32: 35,255,431 km (0.095 R)
• M33: 44,849,890 km (0.105 R)
• M34: 46,723,155 km (0.112 R)

Planet 6 - Ice Giant

Semi-Major Axis: 5.92 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 417.6

Radius: 4.3

Gravity: 22.59 G

Time & Orbit

Eccentricity (e): 0.172

Orbit Range: 4.9 AU - 6.94 AU

Year: 9942 Days

Day: 20.7 Hours

Environment

Temp: -230 °C

Axial Tilt: 14.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (28)

Outer Limit: 44,172,449 km

• M1: 53,556 km (0.101 R)
• M2: 195,524 km (0.082 R)
• M3: 612,454 km (0.058 R)
• M4: 1,123,480 km (0.111 R)
• M5: 1,467,256 km (0.091 R)
• M6: 1,600,996 km (0.107 R)
• M7: 2,035,877 km (0.07 R)
• M8: 2,621,852 km (0.06 R)
• M9: 2,922,544 km (0.057 R)
• M10: 3,521,384 km (0.037 R)
• M11: 3,812,203 km (0.055 R)
• M12: 4,414,334 km (0.034 R)
• M13: 4,694,980 km (0.093 R)
• M14: 6,349,831 km (0.104 R)
• M15: 7,901,909 km (0.037 R)
• M16: 8,527,827 km (0.046 R)
• M17: 9,550,777 km (0.065 R)
• M18: 15,271,399 km (0.111 R)
• M19: 18,297,914 km (0.118 R)
• M20: 20,755,657 km (0.119 R)
• M21: 24,972,672 km (0.048 R)
• M22: 27,890,728 km (0.107 R)
• M23: 28,462,192 km (0.056 R)
• M24: 29,529,722 km (0.082 R)
• M25: 31,641,595 km (0.077 R)
• M26: 34,393,149 km (0.066 R)
• M27: 34,939,929 km (0.101 R)
• M28: 39,049,083 km (0.114 R)

Planet 7 - Ice Giant

Semi-Major Axis: 6.33 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 101.6

Radius: 4.6

Gravity: 4.8 G

Time & Orbit

Eccentricity (e): 0.048

Orbit Range: 6.03 AU - 6.63 AU

Year: 10993 Days

Day: 23.8 Hours

Environment

Temp: -234 °C

Axial Tilt: 17 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 44,172,449 km

• M1: 57,894 km (0.08 R)
• M2: 251,025 km (0.086 R)
• M3: 439,369 km (0.072 R)
• M4: 714,928 km (0.098 R)
• M5: 1,035,217 km (0.112 R)
• M6: 1,479,373 km (0.067 R)
• M7: 1,915,900 km (0.114 R)
• M8: 3,348,000 km (0.079 R)
• M9: 4,593,253 km (0.116 R)
• M10: 6,484,619 km (0.075 R)
• M11: 8,955,228 km (0.036 R)
• M12: 13,865,179 km (0.032 R)
• M13: 16,913,236 km (0.09 R)
• M14: 17,210,786 km (0.087 R)
• M15: 20,784,679 km (0.096 R)
• M16: 22,243,109 km (0.103 R)
• M17: 23,325,749 km (0.097 R)

Planet 8 - Ice Giant

Semi-Major Axis: 7.33 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 285.7

Radius: 6.7

Gravity: 6.36 G

Time & Orbit

Eccentricity (e): 0.156

Orbit Range: 6.19 AU - 8.47 AU

Year: 13698 Days

Day: 22.4 Hours

Environment

Temp: -240 °C

Axial Tilt: 18.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 44,172,449 km

• M1: 83,326 km (0.043 R)
• M2: 485,894 km (0.113 R)
• M3: 980,315 km (0.08 R)
• M4: 2,174,854 km (0.06 R)
• M5: 2,445,776 km (0.062 R)
• M6: 3,637,921 km (0.103 R)
• M7: 4,459,363 km (0.119 R)
• M8: 5,366,225 km (0.084 R)
• M9: 5,727,803 km (0.098 R)
• M10: 6,610,132 km (0.117 R)
• M11: 7,025,714 km (0.083 R)
• M12: 7,579,825 km (0.11 R)
• M13: 8,465,145 km (0.055 R)
• M14: 9,654,299 km (0.117 R)
• M15: 10,744,269 km (0.104 R)
• M16: 12,932,437 km (0.115 R)
• M17: 14,566,943 km (0.055 R)
• M18: 15,012,296 km (0.117 R)
• M19: 20,606,060 km (0.066 R)
• M20: 24,750,070 km (0.105 R)
• M21: 25,020,543 km (0.072 R)
• M22: 26,402,229 km (0.09 R)
• M23: 34,977,777 km (0.11 R)
• M24: 36,820,075 km (0.089 R)
• M25: 42,604,277 km (0.07 R)

Kuiper Belt

Range: 30 - 54 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 441 - 12,850 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit