🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.28 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.55 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.64

Radius: 1.85

Gravity: 1.36 G

Time & Orbit

Eccentricity (e): 0.25

Orbit Range: 0.41 AU - 0.69 AU

Year: 263 Days

Day: 21.7 Hours

Environment

Temp: -132 °C

Axial Tilt: 29.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 59,807,562 km

• M1: 454,628 km (0.101 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.65 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.21

Radius: 1.78

Gravity: 1.33 G

Time & Orbit

Eccentricity (e): 0.041

Orbit Range: 0.62 AU - 0.68 AU

Year: 338 Days

Day: 41.2 Hours

Environment

Temp: -141 °C

Axial Tilt: 159.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 1.01 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 284.8

Radius: 10.1

Gravity: 2.79 G

Time & Orbit

Eccentricity (e): 0.203

Orbit Range: 0.8 AU - 1.22 AU

Year: 655 Days

Day: 9.2 Hours

Environment

Temp: -160 °C

Axial Tilt: 26.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 59,807,562 km

• M1: 125,812 km (0.112 R)
• M2: 337,493 km (0.044 R)
• M3: 565,330 km (0.085 R)
• M4: 995,424 km (0.118 R)
• M5: 1,212,192 km (0.086 R)
• M6: 1,617,153 km (0.098 R)
• M7: 2,106,188 km (0.096 R)
• M8: 2,405,384 km (0.082 R)
• M9: 2,672,117 km (0.104 R)
• M10: 3,124,501 km (0.079 R)
• M11: 3,979,453 km (0.071 R)
• M12: 4,693,484 km (0.084 R)
• M13: 4,951,989 km (0.072 R)
• M14: 5,174,590 km (0.106 R)
• M15: 5,479,172 km (0.103 R)
• M16: 5,747,401 km (0.118 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.11 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 749

Radius: 9.5

Gravity: 8.3 G

Time & Orbit

Eccentricity (e): 0.208

Orbit Range: 0.88 AU - 1.34 AU

Year: 755 Days

Day: 10.1 Hours

Environment

Temp: -166 °C

Axial Tilt: 27 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 59,807,562 km

• M1: 118,781 km (0.066 R)
• M2: 298,597 km (0.087 R)
• M3: 531,820 km (0.111 R)
• M4: 715,676 km (0.104 R)
• M5: 949,198 km (0.075 R)
• M6: 1,172,249 km (0.107 R)
• M7: 1,381,536 km (0.098 R)
• M8: 1,880,595 km (0.027 R)
• M9: 2,581,461 km (0.102 R)
• M10: 3,220,244 km (0.109 R)
• M11: 4,048,567 km (0.055 R)
• M12: 4,322,331 km (0.11 R)
• M13: 4,731,033 km (0.071 R)
• M14: 5,132,254 km (0.085 R)
• M15: 5,730,496 km (0.052 R)
• M16: 6,510,649 km (0.12 R)
• M17: 6,690,914 km (0.065 R)
• M18: 7,105,749 km (0.08 R)
• M19: 7,405,244 km (0.029 R)
• M20: 7,678,410 km (0.11 R)
• M21: 7,890,839 km (0.111 R)
• M22: 8,206,490 km (0.079 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.7 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 987

Radius: 13.3

Gravity: 5.58 G

Time & Orbit

Eccentricity (e): 0.057

Orbit Range: 1.6 AU - 1.8 AU

Year: 1431 Days

Day: 9.9 Hours

Environment

Temp: -187 °C

Axial Tilt: 168.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 59,807,562 km

• M1: 176,825 km (0.037 R)
• M2: 490,531 km (0.088 R)
• M3: 780,901 km (0.1 R)
• M4: 1,186,311 km (0.117 R)
• M5: 1,582,147 km (0.096 R)
• M6: 2,258,329 km (0.103 R)
• M7: 2,988,217 km (0.034 R)
• M8: 3,373,582 km (0.118 R)
• M9: 3,812,651 km (0.111 R)
• M10: 4,726,096 km (0.119 R)
• M11: 5,212,439 km (0.072 R)
• M12: 5,832,223 km (0.106 R)
• M13: 6,760,178 km (0.1 R)
• M14: 7,118,764 km (0.115 R)
• M15: 7,949,631 km (0.073 R)
• M16: 8,273,211 km (0.089 R)
• M17: 10,948,171 km (0.05 R)
• M18: 11,200,991 km (0.094 R)
• M19: 12,214,965 km (0.096 R)
• M20: 13,833,614 km (0.093 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.11 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 139.5

Radius: 14.7

Gravity: 0.65 G

Time & Orbit

Eccentricity (e): 0.057

Orbit Range: 1.99 AU - 2.23 AU

Year: 1979 Days

Day: 14.8 Hours

Environment

Temp: -183 °C

Axial Tilt: 36 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 59,807,562 km

• M1: 435,479 km (0.065 R)
• M2: 723,904 km (0.032 R)
• M3: 1,212,042 km (0.105 R)
• M4: 1,510,938 km (0.068 R)
• M5: 2,521,921 km (0.059 R)
• M6: 2,861,508 km (0.119 R)
• M7: 3,419,658 km (0.096 R)
• M8: 4,746,441 km (0.069 R)
• M9: 5,438,780 km (0.062 R)
• M10: 7,114,426 km (0.119 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.29 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 442.1

Radius: 8.4

Gravity: 6.27 G

Time & Orbit

Eccentricity (e): 0.104

Orbit Range: 2.95 AU - 3.63 AU

Year: 3853 Days

Day: 12.5 Hours

Environment

Temp: -200 °C

Axial Tilt: 120.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (30)

Outer Limit: 59,807,562 km

• M1: 105,915 km (0.081 R)
• M2: 388,206 km (0.095 R)
• M3: 859,739 km (0.117 R)
• M4: 1,279,361 km (0.094 R)
• M5: 2,717,745 km (0.087 R)
• M6: 3,882,214 km (0.119 R)
• M7: 4,906,062 km (0.1 R)
• M8: 5,627,573 km (0.099 R)
• M9: 6,121,246 km (0.086 R)
• M10: 8,227,135 km (0.077 R)
• M11: 8,713,627 km (0.12 R)
• M12: 8,962,109 km (0.089 R)
• M13: 9,186,057 km (0.085 R)
• M14: 9,498,418 km (0.091 R)
• M15: 9,728,948 km (0.067 R)
• M16: 10,497,432 km (0.058 R)
• M17: 13,047,178 km (0.095 R)
• M18: 13,215,775 km (0.063 R)
• M19: 13,901,233 km (0.05 R)
• M20: 14,110,221 km (0.065 R)
• M21: 15,397,510 km (0.065 R)
• M22: 16,025,074 km (0.113 R)
• M23: 16,703,201 km (0.059 R)
• M24: 17,240,556 km (0.119 R)
• M25: 18,260,963 km (0.054 R)
• M26: 18,540,711 km (0.105 R)
• M27: 18,701,679 km (0.078 R)
• M28: 18,903,636 km (0.108 R)
• M29: 20,138,716 km (0.112 R)
• M30: 21,586,075 km (0.05 R)

Planet 8 - Ice Giant

Semi-Major Axis: 7.26 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 834.1

Radius: 4.5

Gravity: 41.19 G

Time & Orbit

Eccentricity (e): 0.01

Orbit Range: 7.19 AU - 7.33 AU

Year: 12630 Days

Day: 16.2 Hours

Environment

Temp: -215 °C

Axial Tilt: 25.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (37)

Outer Limit: 59,807,562 km

• M1: 146,905 km (0.106 R)
• M2: 340,485 km (0.107 R)
• M3: 518,656 km (0.066 R)
• M4: 629,807 km (0.094 R)
• M5: 902,075 km (0.071 R)
• M6: 2,190,412 km (0.114 R)
• M7: 2,470,010 km (0.07 R)
• M8: 2,792,394 km (0.095 R)
• M9: 3,327,655 km (0.103 R)
• M10: 5,185,511 km (0.093 R)
• M11: 6,406,080 km (0.097 R)
• M12: 7,126,693 km (0.053 R)
• M13: 8,638,679 km (0.085 R)
• M14: 9,144,170 km (0.106 R)
• M15: 9,284,493 km (0.07 R)
• M16: 10,696,697 km (0.103 R)
• M17: 11,729,221 km (0.079 R)
• M18: 12,209,430 km (0.109 R)
• M19: 13,199,020 km (0.041 R)
• M20: 13,880,139 km (0.088 R)
• M21: 14,169,013 km (0.114 R)
• M22: 14,815,126 km (0.048 R)
• M23: 15,475,750 km (0.077 R)
• M24: 17,414,987 km (0.057 R)
• M25: 17,608,866 km (0.055 R)
• M26: 18,861,000 km (0.088 R)
• M27: 22,655,550 km (0.056 R)
• M28: 24,377,422 km (0.118 R)
• M29: 24,683,349 km (0.094 R)
• M30: 27,603,949 km (0.076 R)
• M31: 31,376,358 km (0.115 R)
• M32: 32,687,584 km (0.102 R)
• M33: 33,935,679 km (0.112 R)
• M34: 34,387,015 km (0.063 R)
• M35: 39,355,909 km (0.058 R)
• M36: 46,854,951 km (0.117 R)
• M37: 57,675,813 km (0.072 R)

Kuiper Belt

Range: 30 - 51 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 444 - 17,908 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit