🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.26 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.51 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.63

Radius: 0.83

Gravity: 0.91 G

Time & Orbit

Eccentricity (e): 0.197

Orbit Range: 0.41 AU - 0.61 AU

Year: 235 Days

Day: 34 Hours

Environment

Temp: -117 °C

Axial Tilt: 29.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.6 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.71

Radius: 1.69

Gravity: 1.3 G

Time & Orbit

Eccentricity (e): 0.243

Orbit Range: 0.45 AU - 0.75 AU

Year: 300 Days

Day: 44.3 Hours

Environment

Temp: -131 °C

Axial Tilt: 18 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.84 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 122.1

Radius: 11.5

Gravity: 0.92 G

Time & Orbit

Eccentricity (e): 0.03

Orbit Range: 0.81 AU - 0.87 AU

Year: 497 Days

Day: 8.9 Hours

Environment

Temp: -144 °C

Axial Tilt: 11.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 66,147,523 km

• M1: 143,016 km (0.119 R)
• M2: 502,200 km (0.052 R)
• M3: 915,090 km (0.064 R)
• M4: 1,324,390 km (0.106 R)
• M5: 1,780,364 km (0.08 R)
• M6: 2,340,758 km (0.057 R)
• M7: 2,988,816 km (0.064 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.01 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 365.8

Radius: 9.1

Gravity: 4.42 G

Time & Orbit

Eccentricity (e): 0.232

Orbit Range: 0.78 AU - 1.24 AU

Year: 655 Days

Day: 11.4 Hours

Environment

Temp: -156 °C

Axial Tilt: 31.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 66,147,523 km

• M1: 113,246 km (0.099 R)
• M2: 405,261 km (0.096 R)
• M3: 761,902 km (0.111 R)
• M4: 1,123,630 km (0.085 R)
• M5: 1,414,298 km (0.067 R)
• M6: 1,710,352 km (0.078 R)
• M7: 2,498,584 km (0.112 R)
• M8: 3,573,893 km (0.051 R)
• M9: 4,358,384 km (0.058 R)
• M10: 4,853,553 km (0.1 R)
• M11: 5,452,842 km (0.074 R)
• M12: 5,885,031 km (0.096 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.52 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 315.7

Radius: 11.7

Gravity: 2.31 G

Time & Orbit

Eccentricity (e): 0.157

Orbit Range: 1.28 AU - 1.76 AU

Year: 1210 Days

Day: 9.3 Hours

Environment

Temp: -178 °C

Axial Tilt: 32.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 66,147,523 km

• M1: 145,559 km (0.087 R)
• M2: 666,010 km (0.074 R)
• M3: 1,030,131 km (0.048 R)
• M4: 1,588,131 km (0.104 R)
• M5: 2,003,863 km (0.054 R)
• M6: 3,598,278 km (0.115 R)
• M7: 4,456,670 km (0.036 R)
• M8: 5,023,496 km (0.065 R)
• M9: 6,014,134 km (0.08 R)
• M10: 8,055,097 km (0.118 R)
• M11: 8,456,768 km (0.068 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.74 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 880.5

Radius: 8.5

Gravity: 12.19 G

Time & Orbit

Eccentricity (e): 0.194

Orbit Range: 2.21 AU - 3.27 AU

Year: 2928 Days

Day: 6.6 Hours

Environment

Temp: -207 °C

Axial Tilt: 16.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (30)

Outer Limit: 66,147,523 km

• M1: 105,915 km (0.119 R)
• M2: 398,828 km (0.113 R)
• M3: 813,962 km (0.098 R)
• M4: 1,361,041 km (0.091 R)
• M5: 1,682,378 km (0.106 R)
• M6: 3,248,817 km (0.071 R)
• M7: 3,569,704 km (0.108 R)
• M8: 4,059,039 km (0.118 R)
• M9: 4,924,762 km (0.09 R)
• M10: 5,401,231 km (0.04 R)
• M11: 5,826,089 km (0.119 R)
• M12: 6,159,244 km (0.038 R)
• M13: 6,863,850 km (0.12 R)
• M14: 7,172,919 km (0.083 R)
• M15: 7,818,882 km (0.078 R)
• M16: 8,932,489 km (0.12 R)
• M17: 9,951,400 km (0.102 R)
• M18: 10,713,601 km (0.062 R)
• M19: 12,673,483 km (0.119 R)
• M20: 13,092,357 km (0.081 R)
• M21: 13,424,464 km (0.119 R)
• M22: 14,204,916 km (0.119 R)
• M23: 15,695,958 km (0.095 R)
• M24: 16,617,032 km (0.083 R)
• M25: 17,861,986 km (0.051 R)
• M26: 18,925,926 km (0.089 R)
• M27: 19,228,712 km (0.039 R)
• M28: 20,792,159 km (0.084 R)
• M29: 21,506,040 km (0.091 R)
• M30: 22,983,020 km (0.03 R)

Planet 7 - Ice Giant

Semi-Major Axis: 8.02 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 837.1

Radius: 7.7

Gravity: 14.12 G

Time & Orbit

Eccentricity (e): 0.187

Orbit Range: 6.52 AU - 9.52 AU

Year: 14665 Days

Day: 21.9 Hours

Environment

Temp: -223 °C

Axial Tilt: 32.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (36)

Outer Limit: 66,147,523 km

• M1: 98,286 km (0.075 R)
• M2: 351,405 km (0.108 R)
• M3: 608,415 km (0.106 R)
• M4: 1,861,446 km (0.041 R)
• M5: 2,737,940 km (0.084 R)
• M6: 4,104,966 km (0.086 R)
• M7: 4,954,532 km (0.095 R)
• M8: 5,274,372 km (0.098 R)
• M9: 12,199,706 km (0.117 R)
• M10: 12,916,729 km (0.083 R)
• M11: 13,387,364 km (0.057 R)
• M12: 13,661,427 km (0.095 R)
• M13: 14,150,014 km (0.089 R)
• M14: 14,506,057 km (0.059 R)
• M15: 16,376,928 km (0.109 R)
• M16: 19,696,056 km (0.104 R)
• M17: 21,606,271 km (0.097 R)
• M18: 22,078,551 km (0.116 R)
• M19: 25,475,470 km (0.097 R)
• M20: 27,188,366 km (0.053 R)
• M21: 28,748,821 km (0.095 R)
• M22: 29,205,544 km (0.087 R)
• M23: 32,909,886 km (0.08 R)
• M24: 34,939,031 km (0.043 R)
• M25: 35,328,584 km (0.098 R)
• M26: 42,255,115 km (0.109 R)
• M27: 42,845,429 km (0.048 R)
• M28: 45,261,883 km (0.103 R)
• M29: 47,132,604 km (0.068 R)
• M30: 47,767,647 km (0.118 R)
• M31: 53,913,427 km (0.103 R)
• M32: 54,957,321 km (0.096 R)
• M33: 59,267,684 km (0.085 R)
• M34: 61,694,012 km (0.1 R)
• M35: 64,965,718 km (0.113 R)
• M36: 65,949,623 km (0.065 R)

Kuiper Belt

Range: 30 - 59 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 199 - 12,199 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit