🌌 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: 0.6 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.4

Radius: 0.69

Gravity: 0.84 G

Time & Orbit

Eccentricity (e): 0.151

Orbit Range: 0.51 AU - 0.69 AU

Year: 300 Days

Day: 47.9 Hours

Environment

Temp: -127 °C

Axial Tilt: 7.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.67 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.83

Radius: 1.88

Gravity: 1.37 G

Time & Orbit

Eccentricity (e): 0.207

Orbit Range: 0.53 AU - 0.81 AU

Year: 354 Days

Day: 31.8 Hours

Environment

Temp: -141 °C

Axial Tilt: 35.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 1.78 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 343.8

Radius: 13.7

Gravity: 1.83 G

Time & Orbit

Eccentricity (e): 0.081

Orbit Range: 1.64 AU - 1.92 AU

Year: 1533 Days

Day: 7.5 Hours

Environment

Temp: -184 °C

Axial Tilt: 14 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 86,376,916 km

• M1: 170,542 km (0.081 R)
• M2: 1,060,799 km (0.12 R)
• M3: 1,529,339 km (0.059 R)
• M4: 2,277,179 km (0.1 R)
• M5: 2,999,587 km (0.108 R)
• M6: 4,998,663 km (0.087 R)
• M7: 5,446,709 km (0.111 R)
• M8: 6,290,590 km (0.1 R)
• M9: 6,931,917 km (0.111 R)
• M10: 7,923,601 km (0.072 R)
• M11: 8,617,436 km (0.072 R)
• M12: 9,974,737 km (0.111 R)
• M13: 10,657,053 km (0.089 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.03 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 565

Radius: 14

Gravity: 2.88 G

Time & Orbit

Eccentricity (e): 0.143

Orbit Range: 1.74 AU - 2.32 AU

Year: 1867 Days

Day: 12 Hours

Environment

Temp: -195 °C

Axial Tilt: 10.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 86,376,916 km

• M1: 174,132 km (0.101 R)
• M2: 686,205 km (0.084 R)
• M3: 1,218,923 km (0.088 R)
• M4: 2,709,068 km (0.083 R)
• M5: 4,289,869 km (0.103 R)
• M6: 4,941,666 km (0.098 R)
• M7: 5,590,921 km (0.094 R)
• M8: 6,321,108 km (0.109 R)
• M9: 6,955,703 km (0.119 R)
• M10: 7,521,332 km (0.092 R)
• M11: 9,055,309 km (0.112 R)
• M12: 9,796,716 km (0.114 R)
• M13: 10,336,315 km (0.086 R)
• M14: 11,110,484 km (0.103 R)
• M15: 11,660,107 km (0.11 R)
• M16: 12,538,396 km (0.044 R)
• M17: 13,215,625 km (0.119 R)
• M18: 14,513,237 km (0.077 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.21 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 184.3

Radius: 12.3

Gravity: 1.22 G

Time & Orbit

Eccentricity (e): 0.013

Orbit Range: 3.17 AU - 3.25 AU

Year: 3713 Days

Day: 10.1 Hours

Environment

Temp: -195 °C

Axial Tilt: 42 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 86,376,916 km

• M1: 153,039 km (0.069 R)
• M2: 929,302 km (0.087 R)
• M3: 2,418,100 km (0.1 R)
• M4: 4,582,033 km (0.065 R)
• M5: 5,468,401 km (0.09 R)
• M6: 7,841,621 km (0.108 R)
• M7: 8,883,271 km (0.116 R)
• M8: 9,304,988 km (0.108 R)
• M9: 10,154,105 km (0.114 R)
• M10: 12,402,262 km (0.102 R)

Planet 6 - Ice Giant

Semi-Major Axis: 6.45 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 168.9

Radius: 4.5

Gravity: 8.34 G

Time & Orbit

Eccentricity (e): 0.092

Orbit Range: 5.86 AU - 7.04 AU

Year: 10577 Days

Day: 15 Hours

Environment

Temp: -219 °C

Axial Tilt: 45.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 86,376,916 km

• M1: 56,249 km (0.105 R)
• M2: 234,569 km (0.066 R)
• M3: 1,312,871 km (0.107 R)
• M4: 1,847,235 km (0.086 R)
• M5: 1,990,100 km (0.05 R)
• M6: 2,837,722 km (0.114 R)
• M7: 3,067,804 km (0.079 R)
• M8: 3,833,595 km (0.062 R)
• M9: 3,996,058 km (0.094 R)
• M10: 4,798,651 km (0.085 R)
• M11: 5,380,437 km (0.099 R)
• M12: 5,793,626 km (0.086 R)
• M13: 8,728,437 km (0.117 R)
• M14: 10,466,765 km (0.109 R)
• M15: 14,219,876 km (0.073 R)
• M16: 14,950,362 km (0.064 R)
• M17: 17,481,409 km (0.042 R)
• M18: 19,660,003 km (0.076 R)
• M19: 21,208,939 km (0.119 R)

Planet 7 - Ice Giant

Semi-Major Axis: 11.26 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 673.5

Radius: 7.1

Gravity: 13.36 G

Time & Orbit

Eccentricity (e): 0.014

Orbit Range: 11.1 AU - 11.42 AU

Year: 24396 Days

Day: 24.2 Hours

Environment

Temp: -241 °C

Axial Tilt: 26.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (30)

Outer Limit: 86,376,916 km

• M1: 97,239 km (0.081 R)
• M2: 842,685 km (0.074 R)
• M3: 1,071,121 km (0.086 R)
• M4: 1,469,201 km (0.098 R)
• M5: 1,962,275 km (0.038 R)
• M6: 3,631,638 km (0.074 R)
• M7: 3,916,173 km (0.04 R)
• M8: 6,035,376 km (0.041 R)
• M9: 6,948,821 km (0.095 R)
• M10: 7,743,485 km (0.108 R)
• M11: 8,056,593 km (0.086 R)
• M12: 12,151,237 km (0.115 R)
• M13: 15,651,528 km (0.055 R)
• M14: 17,099,037 km (0.095 R)
• M15: 19,964,584 km (0.111 R)
• M16: 20,356,231 km (0.103 R)
• M17: 22,708,358 km (0.117 R)
• M18: 24,447,583 km (0.092 R)
• M19: 26,862,691 km (0.101 R)
• M20: 27,220,230 km (0.082 R)
• M21: 29,939,770 km (0.109 R)
• M22: 35,624,639 km (0.107 R)
• M23: 37,224,289 km (0.057 R)
• M24: 40,409,975 km (0.05 R)
• M25: 44,268,104 km (0.082 R)
• M26: 45,606,706 km (0.068 R)
• M27: 56,129,420 km (0.079 R)
• M28: 58,891,595 km (0.039 R)
• M29: 74,773,055 km (0.065 R)
• M30: 85,089,025 km (0.069 R)

Kuiper Belt

Range: 30 - 45 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 168 - 11,069 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit