🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.27 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.53 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.18

Radius: 1.59

Gravity: 1.26 G

Time & Orbit

Eccentricity (e): 0.212

Orbit Range: 0.42 AU - 0.64 AU

Year: 253 Days

Day: 41.6 Hours

Environment

Temp: -129 °C

Axial Tilt: 1.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.54 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.43

Radius: 1.64

Gravity: 1.28 G

Time & Orbit

Eccentricity (e): 0.175

Orbit Range: 0.45 AU - 0.63 AU

Year: 260 Days

Day: 13.9 Hours

Environment

Temp: -130 °C

Axial Tilt: 33 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.78 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 592.5

Radius: 14.3

Gravity: 2.9 G

Time & Orbit

Eccentricity (e): 0.035

Orbit Range: 0.75 AU - 0.81 AU

Year: 452 Days

Day: 11.2 Hours

Environment

Temp: -145 °C

Axial Tilt: 23.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 36,589,170 km

• M1: 178,620 km (0.103 R)
• M2: 689,646 km (0.11 R)
• M3: 1,148,463 km (0.109 R)
• M4: 2,079,560 km (0.115 R)
• M5: 2,978,643 km (0.068 R)
• M6: 3,639,267 km (0.093 R)
• M7: 4,313,355 km (0.097 R)
• M8: 4,827,972 km (0.103 R)
• M9: 5,578,056 km (0.089 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.2 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 987.6

Radius: 12.5

Gravity: 6.32 G

Time & Orbit

Eccentricity (e): 0.164

Orbit Range: 1 AU - 1.4 AU

Year: 862 Days

Day: 10.2 Hours

Environment

Temp: -168 °C

Axial Tilt: 28.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 36,589,170 km

• M1: 155,432 km (0.041 R)
• M2: 649,404 km (0.046 R)
• M3: 1,129,913 km (0.076 R)
• M4: 1,653,804 km (0.08 R)
• M5: 2,084,048 km (0.075 R)
• M6: 4,206,692 km (0.028 R)
• M7: 4,672,989 km (0.039 R)
• M8: 5,270,483 km (0.102 R)
• M9: 6,394,262 km (0.068 R)
• M10: 7,084,207 km (0.095 R)
• M11: 7,721,943 km (0.116 R)
• M12: 8,264,684 km (0.106 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.65 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 441.5

Radius: 14.9

Gravity: 1.99 G

Time & Orbit

Eccentricity (e): 0.076

Orbit Range: 1.52 AU - 1.78 AU

Year: 1390 Days

Day: 12.7 Hours

Environment

Temp: -191 °C

Axial Tilt: 8.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 36,589,170 km

• M1: 189,391 km (0.081 R)
• M2: 670,049 km (0.111 R)
• M3: 1,148,164 km (0.095 R)
• M4: 1,858,604 km (0.094 R)
• M5: 2,463,877 km (0.108 R)
• M6: 3,255,848 km (0.105 R)
• M7: 3,821,926 km (0.102 R)
• M8: 4,758,409 km (0.054 R)
• M9: 6,410,718 km (0.1 R)
• M10: 6,991,008 km (0.099 R)
• M11: 9,465,356 km (0.082 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.06 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 952.9

Radius: 10

Gravity: 9.53 G

Time & Orbit

Eccentricity (e): 0.227

Orbit Range: 2.37 AU - 3.75 AU

Year: 3511 Days

Day: 5.2 Hours

Environment

Temp: -199 °C

Axial Tilt: 2.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (26)

Outer Limit: 36,589,170 km

• M1: 124,316 km (0.116 R)
• M2: 523,892 km (0.074 R)
• M3: 1,001,109 km (0.118 R)
• M4: 1,413,401 km (0.072 R)
• M5: 3,037,734 km (0.1 R)
• M6: 3,916,472 km (0.083 R)
• M7: 4,607,166 km (0.072 R)
• M8: 5,513,430 km (0.098 R)
• M9: 6,023,708 km (0.116 R)
• M10: 6,411,466 km (0.117 R)
• M11: 7,138,661 km (0.06 R)
• M12: 8,794,709 km (0.118 R)
• M13: 9,255,770 km (0.081 R)
• M14: 10,692,807 km (0.098 R)
• M15: 12,898,478 km (0.081 R)
• M16: 13,645,719 km (0.111 R)
• M17: 14,316,516 km (0.107 R)
• M18: 15,336,325 km (0.051 R)
• M19: 16,692,729 km (0.092 R)
• M20: 17,943,816 km (0.084 R)
• M21: 18,874,913 km (0.056 R)
• M22: 19,448,920 km (0.109 R)
• M23: 21,377,685 km (0.068 R)
• M24: 22,282,453 km (0.111 R)
• M25: 23,067,842 km (0.087 R)
• M26: 24,542,877 km (0.114 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.88 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 406.9

Radius: 9.7

Gravity: 4.32 G

Time & Orbit

Eccentricity (e): 0.037

Orbit Range: 3.74 AU - 4.02 AU

Year: 5014 Days

Day: 13.1 Hours

Environment

Temp: -210 °C

Axial Tilt: 14.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 36,589,170 km

• M1: 120,576 km (0.118 R)
• M2: 436,676 km (0.092 R)
• M3: 763,847 km (0.09 R)
• M4: 1,444,667 km (0.025 R)
• M5: 1,852,171 km (0.089 R)
• M6: 2,203,876 km (0.085 R)
• M7: 3,007,964 km (0.085 R)
• M8: 3,380,164 km (0.066 R)
• M9: 4,105,863 km (0.105 R)
• M10: 5,265,845 km (0.102 R)
• M11: 5,950,405 km (0.119 R)
• M12: 6,943,585 km (0.107 R)
• M13: 7,835,338 km (0.1 R)
• M14: 8,507,332 km (0.07 R)
• M15: 9,646,071 km (0.062 R)
• M16: 10,417,996 km (0.079 R)
• M17: 12,981,804 km (0.099 R)
• M18: 13,421,921 km (0.082 R)
• M19: 16,106,455 km (0.119 R)
• M20: 19,255,640 km (0.088 R)
• M21: 22,582,247 km (0.08 R)
• M22: 23,795,486 km (0.12 R)
• M23: 24,381,311 km (0.112 R)

Planet 8 - Gas Giant

Semi-Major Axis: 4.26 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 917.9

Radius: 8.6

Gravity: 12.41 G

Time & Orbit

Eccentricity (e): 0.204

Orbit Range: 3.39 AU - 5.13 AU

Year: 5768 Days

Day: 13.9 Hours

Environment

Temp: -207 °C

Axial Tilt: 10.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (29)

Outer Limit: 36,589,170 km

• M1: 112,647 km (0.026 R)
• M2: 430,842 km (0.077 R)
• M3: 786,436 km (0.097 R)
• M4: 1,281,007 km (0.081 R)
• M5: 1,619,247 km (0.119 R)
• M6: 2,094,520 km (0.082 R)
• M7: 2,391,472 km (0.074 R)
• M8: 2,831,289 km (0.116 R)
• M9: 4,220,904 km (0.117 R)
• M10: 6,049,738 km (0.109 R)
• M11: 6,691,962 km (0.094 R)
• M12: 7,681,851 km (0.059 R)
• M13: 8,724,398 km (0.096 R)
• M14: 9,813,172 km (0.101 R)
• M15: 10,366,684 km (0.067 R)
• M16: 10,989,759 km (0.078 R)
• M17: 11,385,595 km (0.111 R)
• M18: 12,683,655 km (0.104 R)
• M19: 13,962,717 km (0.088 R)
• M20: 14,310,084 km (0.044 R)
• M21: 15,386,739 km (0.112 R)
• M22: 16,452,475 km (0.115 R)
• M23: 17,432,939 km (0.064 R)
• M24: 18,176,291 km (0.031 R)
• M25: 22,767,001 km (0.099 R)
• M26: 23,655,014 km (0.039 R)
• M27: 27,801,717 km (0.073 R)
• M28: 30,238,517 km (0.091 R)
• M29: 35,318,412 km (0.089 R)

Planet 9 - Ice Giant

Semi-Major Axis: 6.31 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 281.8

Radius: 6.6

Gravity: 6.47 G

Time & Orbit

Eccentricity (e): 0.088

Orbit Range: 5.75 AU - 6.87 AU

Year: 10398 Days

Day: 20.8 Hours

Environment

Temp: -218 °C

Axial Tilt: 5.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 36,589,170 km

• M1: 82,129 km (0.111 R)
• M2: 687,402 km (0.063 R)
• M3: 1,607,429 km (0.078 R)
• M4: 2,230,953 km (0.065 R)
• M5: 3,475,757 km (0.115 R)
• M6: 4,195,622 km (0.077 R)
• M7: 4,590,859 km (0.113 R)
• M8: 5,097,697 km (0.094 R)
• M9: 9,037,806 km (0.108 R)
• M10: 9,385,621 km (0.089 R)
• M11: 9,607,474 km (0.12 R)
• M12: 12,604,069 km (0.102 R)
• M13: 14,342,397 km (0.087 R)
• M14: 14,696,495 km (0.083 R)
• M15: 15,856,178 km (0.102 R)
• M16: 18,425,371 km (0.07 R)
• M17: 21,642,773 km (0.102 R)

Kuiper Belt

Range: 30 - 49 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 280 - 12,385 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit