🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.31 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.61 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.31

Radius: 1.61

Gravity: 1.28 G

Time & Orbit

Eccentricity (e): 0.14

Orbit Range: 0.52 AU - 0.7 AU

Year: 303 Days

Day: 47.8 Hours

Environment

Temp: -137 °C

Axial Tilt: 20.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.7 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 680.7

Radius: 14.8

Gravity: 3.11 G

Time & Orbit

Eccentricity (e): 0.173

Orbit Range: 0.58 AU - 0.82 AU

Year: 372 Days

Day: 12.8 Hours

Environment

Temp: -135 °C

Axial Tilt: 140.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 34,532,700 km

• M1: 184,454 km (0.084 R)
• M2: 711,936 km (0.085 R)
• M3: 1,215,034 km (0.119 R)
• M4: 1,719,029 km (0.037 R)
• M5: 2,304,854 km (0.106 R)
• M6: 2,840,564 km (0.104 R)
• M7: 3,563,571 km (0.072 R)
• M8: 4,039,292 km (0.1 R)
• M9: 4,529,973 km (0.093 R)
• M10: 5,030,976 km (0.1 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.42 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 352.9

Radius: 8.1

Gravity: 5.38 G

Time & Orbit

Eccentricity (e): 0.128

Orbit Range: 1.24 AU - 1.6 AU

Year: 1076 Days

Day: 12.4 Hours

Environment

Temp: -173 °C

Axial Tilt: 3.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 34,532,700 km

• M1: 101,427 km (0.107 R)
• M2: 374,443 km (0.066 R)
• M3: 697,276 km (0.079 R)
• M4: 1,009,935 km (0.083 R)
• M5: 1,351,018 km (0.108 R)
• M6: 1,803,253 km (0.098 R)
• M7: 2,384,740 km (0.099 R)
• M8: 2,766,513 km (0.107 R)
• M9: 3,294,145 km (0.094 R)
• M10: 3,872,191 km (0.116 R)
• M11: 4,433,931 km (0.115 R)
• M12: 5,622,786 km (0.119 R)
• M13: 6,639,303 km (0.076 R)
• M14: 8,640,773 km (0.119 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.25 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 239.8

Radius: 9.3

Gravity: 2.77 G

Time & Orbit

Eccentricity (e): 0.055

Orbit Range: 2.13 AU - 2.37 AU

Year: 2146 Days

Day: 10.3 Hours

Environment

Temp: -197 °C

Axial Tilt: 7.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 34,532,700 km

• M1: 115,639 km (0.111 R)
• M2: 405,111 km (0.113 R)
• M3: 794,664 km (0.06 R)
• M4: 1,329,327 km (0.097 R)
• M5: 1,891,067 km (0.119 R)
• M6: 2,395,660 km (0.061 R)
• M7: 2,960,093 km (0.057 R)
• M8: 3,803,975 km (0.076 R)
• M9: 4,300,191 km (0.094 R)
• M10: 5,154,993 km (0.103 R)
• M11: 5,484,856 km (0.043 R)
• M12: 5,894,904 km (0.099 R)
• M13: 6,279,071 km (0.1 R)
• M14: 7,717,156 km (0.098 R)
• M15: 8,485,042 km (0.06 R)
• M16: 10,660,045 km (0.087 R)
• M17: 11,129,034 km (0.09 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.42 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 610.9

Radius: 12.1

Gravity: 4.17 G

Time & Orbit

Eccentricity (e): 0.221

Orbit Range: 2.66 AU - 4.18 AU

Year: 4021 Days

Day: 10.4 Hours

Environment

Temp: -213 °C

Axial Tilt: 16.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 34,532,700 km

• M1: 150,495 km (0.105 R)
• M2: 610,210 km (0.044 R)
• M3: 2,535,235 km (0.12 R)
• M4: 3,523,778 km (0.076 R)
• M5: 5,547,538 km (0.086 R)
• M6: 7,107,694 km (0.028 R)
• M7: 7,903,405 km (0.087 R)
• M8: 10,649,424 km (0.119 R)
• M9: 11,916,817 km (0.078 R)
• M10: 18,183,920 km (0.099 R)
• M11: 19,797,932 km (0.12 R)
• M12: 23,452,009 km (0.118 R)
• M13: 24,029,158 km (0.084 R)

Planet 6 - Ice Giant

Semi-Major Axis: 9.44 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 273.7

Radius: 3.8

Gravity: 18.95 G

Time & Orbit

Eccentricity (e): 0.094

Orbit Range: 8.55 AU - 10.33 AU

Year: 18441 Days

Day: 16.7 Hours

Environment

Temp: -219 °C

Axial Tilt: 4.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (27)

Outer Limit: 34,532,700 km

• M1: 48,021 km (0.025 R)
• M2: 346,469 km (0.077 R)
• M3: 1,288,187 km (0.119 R)
• M4: 1,409,062 km (0.069 R)
• M5: 1,936,245 km (0.106 R)
• M6: 3,074,236 km (0.064 R)
• M7: 3,391,384 km (0.119 R)
• M8: 3,649,889 km (0.114 R)
• M9: 4,627,661 km (0.109 R)
• M10: 5,449,701 km (0.081 R)
• M11: 9,462,813 km (0.063 R)
• M12: 9,716,382 km (0.062 R)
• M13: 10,721,231 km (0.106 R)
• M14: 11,108,390 km (0.108 R)
• M15: 12,811,861 km (0.105 R)
• M16: 13,374,050 km (0.104 R)
• M17: 15,506,118 km (0.09 R)
• M18: 16,725,940 km (0.084 R)
• M19: 17,171,292 km (0.067 R)
• M20: 29,940,667 km (0.068 R)
• M21: 35,218,331 km (0.104 R)
• M22: 37,567,765 km (0.084 R)
• M23: 41,757,254 km (0.103 R)
• M24: 48,160,192 km (0.088 R)
• M25: 48,458,939 km (0.116 R)
• M26: 49,362,959 km (0.077 R)
• M27: 50,585,622 km (0.095 R)

Planet 7 - Ice Giant

Semi-Major Axis: 9.5 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 73.9

Radius: 6.1

Gravity: 1.99 G

Time & Orbit

Eccentricity (e): 0.072

Orbit Range: 8.82 AU - 10.18 AU

Year: 18617 Days

Day: 22.3 Hours

Environment

Temp: -227 °C

Axial Tilt: 37.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 34,532,700 km

• M1: 77,043 km (0.098 R)
• M2: 368,460 km (0.115 R)
• M3: 660,774 km (0.114 R)
• M4: 3,364,606 km (0.117 R)
• M5: 3,699,107 km (0.059 R)
• M6: 4,513,517 km (0.083 R)
• M7: 5,871,417 km (0.084 R)
• M8: 6,356,862 km (0.115 R)
• M9: 6,764,068 km (0.108 R)
• M10: 10,392,863 km (0.072 R)
• M11: 10,910,173 km (0.084 R)
• M12: 12,201,053 km (0.059 R)
• M13: 14,670,614 km (0.06 R)
• M14: 15,623,403 km (0.044 R)
• M15: 16,114,982 km (0.084 R)
• M16: 21,992,383 km (0.114 R)
• M17: 22,922,583 km (0.062 R)
• M18: 23,238,533 km (0.101 R)
• M19: 24,778,494 km (0.083 R)
• M20: 25,700,615 km (0.107 R)
• M21: 26,127,268 km (0.086 R)
• M22: 34,326,428 km (0.099 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: 317 - 11,947 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit