🌌 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: 0.54 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.83

Radius: 1.27

Gravity: 1.13 G

Time & Orbit

Eccentricity (e): 0.189

Orbit Range: 0.44 AU - 0.64 AU

Year: 252 Days

Day: 32.5 Hours

Environment

Temp: -121 °C

Axial Tilt: 35.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.71 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 791.1

Radius: 10.6

Gravity: 7.04 G

Time & Orbit

Eccentricity (e): 0.191

Orbit Range: 0.57 AU - 0.85 AU

Year: 380 Days

Day: 12.7 Hours

Environment

Temp: -149 °C

Axial Tilt: 13.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 42,997,678 km

• M1: 131,796 km (0.027 R)
• M2: 570,566 km (0.06 R)
• M3: 1,021,454 km (0.112 R)
• M4: 1,374,505 km (0.097 R)
• M5: 1,765,853 km (0.097 R)
• M6: 2,154,209 km (0.072 R)
• M7: 2,580,563 km (0.107 R)
• M8: 2,913,119 km (0.058 R)
• M9: 3,436,712 km (0.119 R)
• M10: 4,688,098 km (0.08 R)
• M11: 5,187,157 km (0.032 R)
• M12: 5,654,800 km (0.065 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.81 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 934.6

Radius: 9.6

Gravity: 10.14 G

Time & Orbit

Eccentricity (e): 0.238

Orbit Range: 0.62 AU - 1 AU

Year: 464 Days

Day: 5 Hours

Environment

Temp: -144 °C

Axial Tilt: 39 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 42,997,678 km

• M1: 119,977 km (0.114 R)
• M2: 447,148 km (0.109 R)
• M3: 846,425 km (0.108 R)
• M4: 1,604,587 km (0.107 R)
• M5: 2,521,771 km (0.091 R)
• M6: 2,906,537 km (0.08 R)
• M7: 3,392,581 km (0.11 R)
• M8: 4,071,904 km (0.057 R)
• M9: 4,451,733 km (0.099 R)
• M10: 4,839,342 km (0.106 R)
• M11: 5,558,758 km (0.1 R)
• M12: 5,971,797 km (0.112 R)
• M13: 6,819,569 km (0.106 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.78 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 569.9

Radius: 10.8

Gravity: 4.89 G

Time & Orbit

Eccentricity (e): 0.064

Orbit Range: 1.67 AU - 1.89 AU

Year: 1510 Days

Day: 6.5 Hours

Environment

Temp: -182 °C

Axial Tilt: 13.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 42,997,678 km

• M1: 134,339 km (0.113 R)
• M2: 754,422 km (0.071 R)
• M3: 1,126,023 km (0.12 R)
• M4: 1,568,384 km (0.105 R)
• M5: 1,996,234 km (0.107 R)
• M6: 2,367,536 km (0.104 R)
• M7: 3,033,695 km (0.106 R)
• M8: 3,870,995 km (0.104 R)
• M9: 4,325,922 km (0.072 R)
• M10: 4,894,992 km (0.065 R)
• M11: 6,881,502 km (0.063 R)
• M12: 7,288,707 km (0.093 R)
• M13: 7,738,997 km (0.079 R)
• M14: 8,783,639 km (0.092 R)
• M15: 9,294,067 km (0.033 R)
• M16: 9,984,012 km (0.112 R)
• M17: 10,341,551 km (0.072 R)
• M18: 11,894,377 km (0.101 R)
• M19: 12,296,496 km (0.05 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.28 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 423.8

Radius: 13.9

Gravity: 2.19 G

Time & Orbit

Eccentricity (e): 0.086

Orbit Range: 3 AU - 3.56 AU

Year: 3777 Days

Day: 8 Hours

Environment

Temp: -213 °C

Axial Tilt: 13 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 42,997,678 km

• M1: 207,642 km (0.058 R)
• M2: 2,114,716 km (0.116 R)
• M3: 2,771,600 km (0.113 R)
• M4: 4,367,510 km (0.115 R)
• M5: 5,072,864 km (0.03 R)
• M6: 5,986,159 km (0.092 R)
• M7: 7,845,660 km (0.119 R)
• M8: 8,373,890 km (0.064 R)
• M9: 11,092,533 km (0.042 R)
• M10: 12,102,468 km (0.037 R)
• M11: 15,553,242 km (0.11 R)
• M12: 20,157,415 km (0.058 R)

Planet 6 - Gas Giant

Semi-Major Axis: 4.53 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 49.8

Radius: 12.5

Gravity: 0.32 G

Time & Orbit

Eccentricity (e): 0.02

Orbit Range: 4.44 AU - 4.62 AU

Year: 6130 Days

Day: 11.6 Hours

Environment

Temp: -214 °C

Axial Tilt: 20.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 42,997,678 km

• M1: 155,582 km (0.095 R)
• M2: 568,622 km (0.091 R)
• M3: 1,322,894 km (0.077 R)
• M4: 1,887,626 km (0.115 R)
• M5: 3,163,696 km (0.086 R)
• M6: 4,355,243 km (0.061 R)
• M7: 5,096,051 km (0.031 R)
• M8: 5,872,464 km (0.06 R)
• M9: 6,777,382 km (0.097 R)
• M10: 8,833,305 km (0.063 R)
• M11: 12,790,618 km (0.071 R)

Planet 7 - Ice Giant

Semi-Major Axis: 7.65 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 898.2

Radius: 7.4

Gravity: 16.4 G

Time & Orbit

Eccentricity (e): 0.072

Orbit Range: 7.1 AU - 8.2 AU

Year: 13453 Days

Day: 16.7 Hours

Environment

Temp: -220 °C

Axial Tilt: 0.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (38)

Outer Limit: 42,997,678 km

• M1: 92,003 km (0.073 R)
• M2: 368,460 km (0.114 R)
• M3: 726,597 km (0.092 R)
• M4: 1,101,639 km (0.042 R)
• M5: 1,798,615 km (0.1 R)
• M6: 2,303,957 km (0.07 R)
• M7: 2,645,938 km (0.114 R)
• M8: 2,876,468 km (0.107 R)
• M9: 3,763,882 km (0.096 R)
• M10: 4,177,969 km (0.036 R)
• M11: 5,383,579 km (0.039 R)
• M12: 6,594,424 km (0.107 R)
• M13: 8,610,853 km (0.063 R)
• M14: 9,277,761 km (0.074 R)
• M15: 9,543,147 km (0.08 R)
• M16: 10,089,329 km (0.12 R)
• M17: 10,714,050 km (0.097 R)
• M18: 11,791,454 km (0.084 R)
• M19: 12,484,391 km (0.119 R)
• M20: 12,743,046 km (0.105 R)
• M21: 13,071,264 km (0.108 R)
• M22: 14,726,414 km (0.109 R)
• M23: 15,087,992 km (0.11 R)
• M24: 16,516,503 km (0.113 R)
• M25: 23,330,835 km (0.07 R)
• M26: 26,704,267 km (0.104 R)
• M27: 27,134,062 km (0.074 R)
• M28: 29,810,368 km (0.096 R)
• M29: 31,331,030 km (0.114 R)
• M30: 33,149,243 km (0.104 R)
• M31: 34,653,449 km (0.031 R)
• M32: 36,202,685 km (0.105 R)
• M33: 36,861,663 km (0.1 R)
• M34: 38,067,871 km (0.12 R)
• M35: 44,195,849 km (0.108 R)
• M36: 51,777,319 km (0.081 R)
• M37: 54,830,163 km (0.051 R)
• M38: 56,400,641 km (0.073 R)

Planet 8 - Ice Giant

Semi-Major Axis: 8.98 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 168.9

Radius: 6

Gravity: 4.69 G

Time & Orbit

Eccentricity (e): 0.057

Orbit Range: 8.47 AU - 9.49 AU

Year: 17110 Days

Day: 17.8 Hours

Environment

Temp: -219 °C

Axial Tilt: 3.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (31)

Outer Limit: 42,997,678 km

• M1: 79,436 km (0.113 R)
• M2: 350,807 km (0.067 R)
• M3: 583,282 km (0.079 R)
• M4: 803,191 km (0.105 R)
• M5: 1,078,750 km (0.07 R)
• M6: 1,659,639 km (0.084 R)
• M7: 1,978,731 km (0.107 R)
• M8: 2,989,863 km (0.117 R)
• M9: 3,392,880 km (0.113 R)
• M10: 4,117,831 km (0.09 R)
• M11: 4,418,224 km (0.045 R)
• M12: 4,971,436 km (0.072 R)
• M13: 5,668,563 km (0.069 R)
• M14: 6,250,349 km (0.092 R)
• M15: 6,501,075 km (0.084 R)
• M16: 7,452,218 km (0.038 R)
• M17: 7,734,360 km (0.056 R)
• M18: 8,536,354 km (0.049 R)
• M19: 9,674,345 km (0.108 R)
• M20: 12,811,711 km (0.083 R)
• M21: 13,511,530 km (0.05 R)
• M22: 16,499,448 km (0.108 R)
• M23: 18,473,991 km (0.098 R)
• M24: 19,140,898 km (0.056 R)
• M25: 20,522,285 km (0.055 R)
• M26: 23,914,566 km (0.083 R)
• M27: 28,339,521 km (0.118 R)
• M28: 29,927,952 km (0.084 R)
• M29: 31,157,347 km (0.053 R)
• M30: 34,267,038 km (0.119 R)
• M31: 35,725,767 km (0.099 R)

Kuiper Belt

Range: 30 - 60 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 503 - 19,918 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit