🌌 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: 4.21

Radius: 1.78

Gravity: 1.33 G

Time & Orbit

Eccentricity (e): 0.222

Orbit Range: 0.4 AU - 0.62 AU

Year: 235 Days

Day: 31.5 Hours

Environment

Temp: -116 °C

Axial Tilt: 13.5 °

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: 4.77

Radius: 1.87

Gravity: 1.36 G

Time & Orbit

Eccentricity (e): 0.159

Orbit Range: 0.5 AU - 0.7 AU

Year: 300 Days

Day: 45.6 Hours

Environment

Temp: -134 °C

Axial Tilt: 37 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.9 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 828.8

Radius: 10.4

Gravity: 7.66 G

Time & Orbit

Eccentricity (e): 0.138

Orbit Range: 0.78 AU - 1.02 AU

Year: 551 Days

Day: 7.8 Hours

Environment

Temp: -156 °C

Axial Tilt: 35.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 56,287,579 km

• M1: 130,150 km (0.076 R)
• M2: 494,571 km (0.045 R)
• M3: 938,278 km (0.065 R)
• M4: 1,332,169 km (0.118 R)
• M5: 1,803,702 km (0.094 R)
• M6: 2,475,994 km (0.089 R)
• M7: 2,853,879 km (0.055 R)
• M8: 3,486,827 km (0.113 R)
• M9: 4,255,760 km (0.056 R)
• M10: 4,785,187 km (0.095 R)
• M11: 5,607,078 km (0.109 R)
• M12: 5,957,436 km (0.084 R)
• M13: 7,182,493 km (0.109 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.95 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 116.5

Radius: 13.1

Gravity: 0.68 G

Time & Orbit

Eccentricity (e): 0.032

Orbit Range: 0.92 AU - 0.98 AU

Year: 598 Days

Day: 11.5 Hours

Environment

Temp: -159 °C

Axial Tilt: 16.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 56,287,579 km

• M1: 163,062 km (0.031 R)
• M2: 673,938 km (0.057 R)
• M3: 1,460,075 km (0.083 R)
• M4: 1,894,208 km (0.117 R)
• M5: 2,415,706 km (0.116 R)
• M6: 2,975,950 km (0.089 R)
• M7: 3,410,532 km (0.105 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.5 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 909.8

Radius: 12.5

Gravity: 5.82 G

Time & Orbit

Eccentricity (e): 0.122

Orbit Range: 3.07 AU - 3.93 AU

Year: 4228 Days

Day: 7.8 Hours

Environment

Temp: -201 °C

Axial Tilt: 10.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 56,287,579 km

• M1: 155,582 km (0.114 R)
• M2: 686,505 km (0.111 R)
• M3: 1,206,806 km (0.113 R)
• M4: 1,663,080 km (0.094 R)
• M5: 2,296,327 km (0.103 R)
• M6: 2,739,735 km (0.092 R)
• M7: 3,162,499 km (0.055 R)
• M8: 3,980,500 km (0.12 R)
• M9: 5,148,411 km (0.084 R)
• M10: 6,596,668 km (0.098 R)
• M11: 7,644,002 km (0.064 R)
• M12: 8,605,169 km (0.102 R)
• M13: 9,521,007 km (0.067 R)
• M14: 10,633,566 km (0.115 R)
• M15: 11,038,228 km (0.091 R)
• M16: 11,688,231 km (0.114 R)
• M17: 12,265,529 km (0.117 R)
• M18: 13,687,008 km (0.119 R)
• M19: 16,434,373 km (0.039 R)
• M20: 16,976,217 km (0.087 R)
• M21: 22,184,915 km (0.087 R)
• M22: 23,674,611 km (0.106 R)
• M23: 25,469,037 km (0.104 R)
• M24: 26,032,722 km (0.056 R)
• M25: 28,285,367 km (0.081 R)

Planet 6 - Gas Giant

Semi-Major Axis: 5.1 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 104.1

Radius: 8

Gravity: 1.63 G

Time & Orbit

Eccentricity (e): 0.148

Orbit Range: 4.35 AU - 5.85 AU

Year: 7437 Days

Day: 6.7 Hours

Environment

Temp: -207 °C

Axial Tilt: 11.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 56,287,579 km

• M1: 99,632 km (0.073 R)
• M2: 450,140 km (0.084 R)
• M3: 1,166,564 km (0.112 R)
• M4: 1,426,864 km (0.095 R)
• M5: 2,067,891 km (0.117 R)
• M6: 3,299,381 km (0.118 R)
• M7: 3,969,280 km (0.114 R)
• M8: 4,456,969 km (0.066 R)
• M9: 5,079,745 km (0.115 R)
• M10: 6,356,264 km (0.119 R)
• M11: 7,175,163 km (0.114 R)
• M12: 10,015,877 km (0.097 R)
• M13: 12,264,931 km (0.064 R)
• M14: 13,812,371 km (0.055 R)

Planet 7 - Ice Giant

Semi-Major Axis: 7.46 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 200.1

Radius: 6.5

Gravity: 4.74 G

Time & Orbit

Eccentricity (e): 0.226

Orbit Range: 5.77 AU - 9.15 AU

Year: 13156 Days

Day: 20.2 Hours

Environment

Temp: -217 °C

Axial Tilt: 33.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 56,287,579 km

• M1: 278,102 km (0.095 R)
• M2: 481,107 km (0.045 R)
• M3: 1,500,616 km (0.025 R)
• M4: 2,090,331 km (0.111 R)
• M5: 3,260,785 km (0.11 R)
• M6: 6,736,841 km (0.095 R)
• M7: 7,906,846 km (0.102 R)
• M8: 8,477,263 km (0.1 R)
• M9: 9,563,493 km (0.095 R)
• M10: 9,930,007 km (0.092 R)
• M11: 14,541,811 km (0.064 R)
• M12: 22,105,778 km (0.092 R)
• M13: 35,290,138 km (0.092 R)
• M14: 37,166,095 km (0.106 R)
• M15: 38,071,611 km (0.112 R)

Planet 8 - Ice Giant

Semi-Major Axis: 7.46 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 170

Radius: 3.7

Gravity: 12.42 G

Time & Orbit

Eccentricity (e): 0.243

Orbit Range: 5.65 AU - 9.27 AU

Year: 13156 Days

Day: 21.3 Hours

Environment

Temp: -235 °C

Axial Tilt: 25.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 56,287,579 km

• M1: 52,658 km (0.046 R)
• M2: 271,071 km (0.101 R)
• M3: 526,884 km (0.114 R)
• M4: 710,590 km (0.095 R)
• M5: 1,320,650 km (0.057 R)
• M6: 2,238,433 km (0.031 R)
• M7: 2,590,437 km (0.035 R)
• M8: 2,779,828 km (0.101 R)
• M9: 2,998,689 km (0.075 R)
• M10: 3,293,696 km (0.053 R)
• M11: 3,607,852 km (0.044 R)
• M12: 4,217,912 km (0.113 R)
• M13: 8,864,422 km (0.087 R)
• M14: 9,207,450 km (0.112 R)
• M15: 9,965,462 km (0.077 R)
• M16: 10,336,315 km (0.063 R)
• M17: 12,224,091 km (0.066 R)
• M18: 12,864,818 km (0.044 R)
• M19: 16,216,858 km (0.025 R)
• M20: 19,312,936 km (0.107 R)
• M21: 22,228,299 km (0.115 R)
• M22: 22,940,385 km (0.116 R)
• M23: 24,326,708 km (0.049 R)
• M24: 24,829,058 km (0.105 R)

Planet 9 - Ice Giant

Semi-Major Axis: 10.49 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 230.5

Radius: 7.8

Gravity: 3.79 G

Time & Orbit

Eccentricity (e): 0.161

Orbit Range: 8.8 AU - 12.18 AU

Year: 21937 Days

Day: 24.5 Hours

Environment

Temp: -238 °C

Axial Tilt: 29.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (32)

Outer Limit: 56,287,579 km

• M1: 106,364 km (0.1 R)
• M2: 392,994 km (0.086 R)
• M3: 826,229 km (0.089 R)
• M4: 1,119,142 km (0.119 R)
• M5: 2,097,961 km (0.082 R)
• M6: 2,675,109 km (0.047 R)
• M7: 3,941,455 km (0.101 R)
• M8: 4,319,788 km (0.114 R)
• M9: 4,627,212 km (0.08 R)
• M10: 5,048,629 km (0.103 R)
• M11: 5,566,387 km (0.098 R)
• M12: 6,389,175 km (0.07 R)
• M13: 7,248,017 km (0.093 R)
• M14: 7,727,478 km (0.081 R)
• M15: 7,997,801 km (0.082 R)
• M16: 8,605,318 km (0.047 R)
• M17: 9,496,772 km (0.105 R)
• M18: 12,052,951 km (0.118 R)
• M19: 15,174,909 km (0.083 R)
• M20: 15,599,617 km (0.037 R)
• M21: 19,287,953 km (0.048 R)
• M22: 24,569,057 km (0.109 R)
• M23: 26,252,781 km (0.118 R)
• M24: 30,180,772 km (0.088 R)
• M25: 31,648,926 km (0.045 R)
• M26: 34,483,356 km (0.113 R)
• M27: 35,464,569 km (0.073 R)
• M28: 35,712,752 km (0.047 R)
• M29: 47,216,230 km (0.091 R)
• M30: 48,273,438 km (0.086 R)
• M31: 54,784,087 km (0.065 R)
• M32: 55,448,900 km (0.037 R)

Kuiper Belt

Range: 30 - 56 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 507 - 12,882 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit