🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.3 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.59 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.28

Radius: 1.79

Gravity: 1.34 G

Time & Orbit

Eccentricity (e): 0.203

Orbit Range: 0.47 AU - 0.71 AU

Year: 194 Days

Day: 28.3 Hours

Environment

Temp: 12 °C

Axial Tilt: 26.4 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Planet 2 - Terrestrial

Semi-Major Axis: 0.62 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.15

Radius: 0.47

Gravity: 0.68 G

Time & Orbit

Eccentricity (e): 0.174

Orbit Range: 0.51 AU - 0.73 AU

Year: 209 Days

Day: 44.1 Hours

Environment

Temp: 27 °C

Axial Tilt: 4.7 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Satellites (2)

Outer Limit: 41,194,470 km

• M1: 35,455 km (0.07 R)
• M2: 97,687 km (0.087 R)

Planet 3 - Terrestrial

Semi-Major Axis: 0.64 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.64

Radius: 0.84

Gravity: 0.91 G

Time & Orbit

Eccentricity (e): 0.203

Orbit Range: 0.51 AU - 0.77 AU

Year: 219 Days

Day: 23.4 Hours

Environment

Temp: 5 °C

Axial Tilt: 15.7 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Planet 4 - Terrestrial

Semi-Major Axis: 1.62 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.42

Radius: 0.71

Gravity: 0.83 G

Time & Orbit

Eccentricity (e): 0.065

Orbit Range: 1.51 AU - 1.73 AU

Year: 881 Days

Day: 23.3 Hours

Environment

Temp: -103 °C

Axial Tilt: 22.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 41,194,470 km

• M1: 54,005 km (0.09 R)

Planet 5 - Gas Giant

Semi-Major Axis: 4.02 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 266.5

Radius: 8.7

Gravity: 3.52 G

Time & Orbit

Eccentricity (e): 0.067

Orbit Range: 3.75 AU - 4.29 AU

Year: 3446 Days

Day: 13.5 Hours

Environment

Temp: -152 °C

Axial Tilt: 3.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 41,194,470 km

• M1: 108,159 km (0.115 R)
• M2: 834,607 km (0.041 R)
• M3: 1,226,703 km (0.091 R)
• M4: 1,583,942 km (0.109 R)
• M5: 2,106,488 km (0.08 R)
• M6: 2,469,861 km (0.068 R)
• M7: 3,273,201 km (0.037 R)
• M8: 6,433,905 km (0.082 R)
• M9: 7,849,699 km (0.081 R)
• M10: 8,957,023 km (0.063 R)
• M11: 9,462,215 km (0.06 R)
• M12: 10,022,010 km (0.117 R)
• M13: 11,478,794 km (0.064 R)
• M14: 11,754,503 km (0.117 R)
• M15: 12,115,483 km (0.1 R)
• M16: 12,442,504 km (0.079 R)
• M17: 13,459,320 km (0.111 R)
• M18: 15,181,042 km (0.097 R)

Planet 6 - Gas Giant

Semi-Major Axis: 9.48 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 79.9

Radius: 12.5

Gravity: 0.51 G

Time & Orbit

Eccentricity (e): 0.216

Orbit Range: 7.43 AU - 11.53 AU

Year: 12478 Days

Day: 10.2 Hours

Environment

Temp: -192 °C

Axial Tilt: 18.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 41,194,470 km

• M1: 155,432 km (0.101 R)
• M2: 652,097 km (0.112 R)
• M3: 1,818,811 km (0.112 R)
• M4: 4,572,609 km (0.093 R)
• M5: 5,558,608 km (0.039 R)
• M6: 6,494,792 km (0.1 R)
• M7: 7,131,480 km (0.105 R)
• M8: 7,844,314 km (0.095 R)
• M9: 8,906,459 km (0.044 R)
• M10: 9,774,276 km (0.089 R)
• M11: 10,440,286 km (0.08 R)
• M12: 11,495,848 km (0.099 R)
• M13: 12,002,985 km (0.114 R)
• M14: 17,683,665 km (0.103 R)
• M15: 19,246,065 km (0.12 R)
• M16: 22,643,583 km (0.082 R)
• M17: 24,635,478 km (0.088 R)
• M18: 25,170,440 km (0.084 R)
• M19: 25,869,511 km (0.047 R)

Planet 7 - Ice Giant

Semi-Major Axis: 10.58 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 453.8

Radius: 3.4

Gravity: 39.26 G

Time & Orbit

Eccentricity (e): 0.075

Orbit Range: 9.79 AU - 11.37 AU

Year: 14712 Days

Day: 19.9 Hours

Environment

Temp: -205 °C

Axial Tilt: 46.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 41,194,470 km

• M1: 42,785 km (0.07 R)
• M2: 507,586 km (0.063 R)
• M3: 690,843 km (0.041 R)
• M4: 798,254 km (0.097 R)
• M5: 1,332,468 km (0.09 R)
• M6: 7,164,392 km (0.117 R)
• M7: 11,707,978 km (0.031 R)
• M8: 12,002,088 km (0.105 R)
• M9: 13,805,639 km (0.054 R)
• M10: 15,781,977 km (0.079 R)
• M11: 18,806,098 km (0.091 R)
• M12: 19,949,624 km (0.089 R)
• M13: 21,750,633 km (0.071 R)
• M14: 24,794,800 km (0.108 R)
• M15: 27,487,412 km (0.115 R)
• M16: 31,938,697 km (0.108 R)
• M17: 44,330,038 km (0.09 R)
• M18: 45,187,234 km (0.06 R)

Planet 8 - Ice Giant

Semi-Major Axis: 13.26 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 943.1

Radius: 3.2

Gravity: 92.1 G

Time & Orbit

Eccentricity (e): 0.078

Orbit Range: 12.23 AU - 14.29 AU

Year: 20642 Days

Day: 20.8 Hours

Environment

Temp: -203 °C

Axial Tilt: 29.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (42)

Outer Limit: 41,194,470 km

• M1: 40,092 km (0.112 R)
• M2: 200,611 km (0.075 R)
• M3: 595,848 km (0.03 R)
• M4: 752,028 km (0.111 R)
• M5: 1,063,940 km (0.115 R)
• M6: 1,422,526 km (0.069 R)
• M7: 1,778,569 km (0.082 R)
• M8: 2,061,159 km (0.083 R)
• M9: 2,818,424 km (0.062 R)
• M10: 3,808,463 km (0.099 R)
• M11: 9,897,545 km (0.03 R)
• M12: 10,019,916 km (0.101 R)
• M13: 10,776,133 km (0.032 R)
• M14: 11,980,396 km (0.071 R)
• M15: 12,189,384 km (0.084 R)
• M16: 12,903,864 km (0.043 R)
• M17: 13,123,623 km (0.11 R)
• M18: 15,052,388 km (0.069 R)
• M19: 16,986,240 km (0.088 R)
• M20: 17,338,692 km (0.113 R)
• M21: 21,034,358 km (0.093 R)
• M22: 24,768,919 km (0.107 R)
• M23: 25,680,419 km (0.12 R)
• M24: 26,378,593 km (0.037 R)
• M25: 27,691,463 km (0.077 R)
• M26: 29,550,815 km (0.071 R)
• M27: 31,359,753 km (0.076 R)
• M28: 31,491,698 km (0.107 R)
• M29: 37,523,185 km (0.109 R)
• M30: 37,672,035 km (0.079 R)
• M31: 42,158,625 km (0.112 R)
• M32: 46,644,018 km (0.065 R)
• M33: 47,856,658 km (0.103 R)
• M34: 48,735,695 km (0.085 R)
• M35: 58,324,021 km (0.059 R)
• M36: 67,764,095 km (0.107 R)
• M37: 68,649,416 km (0.118 R)
• M38: 69,318,417 km (0.03 R)
• M39: 69,766,762 km (0.106 R)
• M40: 71,351,452 km (0.086 R)
• M41: 79,390,543 km (0.086 R)
• M42: 80,127,462 km (0.071 R)

Planet 9 - Ice Giant

Semi-Major Axis: 16.98 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 48.6

Radius: 8

Gravity: 0.76 G

Time & Orbit

Eccentricity (e): 0.014

Orbit Range: 16.74 AU - 17.22 AU

Year: 29911 Days

Day: 15 Hours

Environment

Temp: -203 °C

Axial Tilt: 1.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 41,194,470 km

• M1: 191,934 km (0.064 R)
• M2: 586,573 km (0.115 R)
• M3: 1,133,204 km (0.102 R)
• M4: 1,714,691 km (0.039 R)
• M5: 1,969,306 km (0.076 R)
• M6: 4,073,550 km (0.046 R)
• M7: 4,420,767 km (0.076 R)
• M8: 4,846,073 km (0.102 R)
• M9: 6,045,998 km (0.106 R)
• M10: 6,534,585 km (0.102 R)
• M11: 9,427,209 km (0.06 R)
• M12: 10,180,733 km (0.106 R)
• M13: 12,021,834 km (0.06 R)
• M14: 15,566,257 km (0.064 R)
• M15: 28,392,030 km (0.098 R)
• M16: 31,169,614 km (0.072 R)
• M17: 35,444,672 km (0.101 R)
• M18: 37,143,655 km (0.096 R)
• M19: 39,853,172 km (0.065 R)

Kuiper Belt

Range: 30 - 55 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 420 - 11,862 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit