🌌 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: 0.62 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.33

Radius: 1.8

Gravity: 1.34 G

Time & Orbit

Eccentricity (e): 0.082

Orbit Range: 0.57 AU - 0.67 AU

Year: 320 Days

Day: 43.9 Hours

Environment

Temp: -134 °C

Axial Tilt: 165.3 °

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: 1.27

Radius: 1.1

Gravity: 1.05 G

Time & Orbit

Eccentricity (e): 0.224

Orbit Range: 0.52 AU - 0.82 AU

Year: 360 Days

Day: 29.6 Hours

Environment

Temp: -133 °C

Axial Tilt: 1.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 90,513,357 km

• M1: 25,581 km (0.113 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.72 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 967.2

Radius: 13.5

Gravity: 5.31 G

Time & Orbit

Eccentricity (e): 0.168

Orbit Range: 0.6 AU - 0.84 AU

Year: 401 Days

Day: 12.8 Hours

Environment

Temp: -150 °C

Axial Tilt: 35.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 90,513,357 km

• M1: 168,896 km (0.097 R)
• M2: 1,143,825 km (0.083 R)
• M3: 1,643,033 km (0.032 R)
• M4: 2,095,268 km (0.109 R)
• M5: 2,582,059 km (0.059 R)
• M6: 3,723,790 km (0.047 R)
• M7: 4,503,793 km (0.07 R)
• M8: 5,226,800 km (0.09 R)
• M9: 6,025,952 km (0.077 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.52 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 402.3

Radius: 8

Gravity: 6.29 G

Time & Orbit

Eccentricity (e): 0.097

Orbit Range: 2.28 AU - 2.76 AU

Year: 2624 Days

Day: 6.5 Hours

Environment

Temp: -199 °C

Axial Tilt: 131.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 90,513,357 km

• M1: 99,483 km (0.064 R)
• M2: 443,258 km (0.069 R)
• M3: 736,620 km (0.026 R)
• M4: 1,177,934 km (0.109 R)
• M5: 1,722,619 km (0.11 R)
• M6: 5,062,392 km (0.107 R)
• M7: 6,052,281 km (0.12 R)
• M8: 7,026,462 km (0.075 R)
• M9: 7,653,277 km (0.103 R)
• M10: 8,472,775 km (0.104 R)
• M11: 9,450,546 km (0.12 R)
• M12: 10,107,580 km (0.104 R)
• M13: 10,980,484 km (0.119 R)
• M14: 11,282,372 km (0.094 R)
• M15: 12,302,031 km (0.073 R)
• M16: 12,792,712 km (0.11 R)
• M17: 13,988,598 km (0.047 R)
• M18: 14,523,410 km (0.12 R)
• M19: 15,776,292 km (0.086 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.77 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 60.5

Radius: 8.3

Gravity: 0.88 G

Time & Orbit

Eccentricity (e): 0.237

Orbit Range: 2.88 AU - 4.66 AU

Year: 4802 Days

Day: 13.9 Hours

Environment

Temp: -208 °C

Axial Tilt: 32.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 90,513,357 km

• M1: 103,223 km (0.091 R)
• M2: 361,728 km (0.119 R)
• M3: 627,264 km (0.093 R)
• M4: 2,025,705 km (0.091 R)
• M5: 2,508,307 km (0.118 R)
• M6: 2,838,769 km (0.107 R)
• M7: 3,459,900 km (0.075 R)
• M8: 5,560,104 km (0.119 R)
• M9: 6,313,629 km (0.112 R)
• M10: 7,883,209 km (0.092 R)
• M11: 8,803,236 km (0.081 R)
• M12: 10,182,828 km (0.086 R)
• M13: 10,924,235 km (0.116 R)
• M14: 12,476,462 km (0.11 R)

Planet 6 - Gas Giant

Semi-Major Axis: 4.41 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 698.5

Radius: 14.7

Gravity: 3.23 G

Time & Orbit

Eccentricity (e): 0.171

Orbit Range: 3.66 AU - 5.16 AU

Year: 6075 Days

Day: 12.7 Hours

Environment

Temp: -216 °C

Axial Tilt: 48.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 90,513,357 km

• M1: 182,958 km (0.059 R)
• M2: 714,330 km (0.077 R)
• M3: 1,431,203 km (0.112 R)
• M4: 1,998,179 km (0.108 R)
• M5: 3,175,664 km (0.115 R)
• M6: 4,830,366 km (0.1 R)
• M7: 7,544,370 km (0.11 R)
• M8: 8,035,051 km (0.119 R)
• M9: 9,249,337 km (0.086 R)
• M10: 10,770,000 km (0.081 R)
• M11: 12,871,850 km (0.12 R)
• M12: 13,464,856 km (0.039 R)
• M13: 18,955,995 km (0.079 R)
• M14: 20,805,922 km (0.115 R)
• M15: 22,463,018 km (0.11 R)
• M16: 23,323,804 km (0.082 R)
• M17: 26,209,846 km (0.085 R)
• M18: 26,988,952 km (0.049 R)
• M19: 28,231,362 km (0.029 R)
• M20: 28,775,450 km (0.097 R)
• M21: 29,978,217 km (0.101 R)

Planet 7 - Gas Giant

Semi-Major Axis: 4.76 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 372.8

Radius: 8.3

Gravity: 5.41 G

Time & Orbit

Eccentricity (e): 0.055

Orbit Range: 4.5 AU - 5.02 AU

Year: 6813 Days

Day: 10.2 Hours

Environment

Temp: -220 °C

Axial Tilt: 28.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 90,513,357 km

• M1: 108,758 km (0.108 R)
• M2: 968,497 km (0.105 R)
• M3: 2,021,366 km (0.094 R)
• M4: 2,470,758 km (0.066 R)
• M5: 3,298,783 km (0.064 R)
• M6: 4,447,844 km (0.099 R)
• M7: 4,805,532 km (0.078 R)
• M8: 5,406,317 km (0.119 R)
• M9: 8,745,192 km (0.117 R)
• M10: 10,240,273 km (0.107 R)
• M11: 11,002,624 km (0.056 R)
• M12: 15,448,224 km (0.111 R)
• M13: 15,914,371 km (0.095 R)
• M14: 18,910,816 km (0.057 R)
• M15: 27,919,451 km (0.108 R)
• M16: 29,939,022 km (0.118 R)
• M17: 30,300,002 km (0.065 R)

Planet 8 - Ice Giant

Semi-Major Axis: 7.65 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 78.8

Radius: 6.6

Gravity: 1.81 G

Time & Orbit

Eccentricity (e): 0.213

Orbit Range: 6.02 AU - 9.28 AU

Year: 13880 Days

Day: 23.5 Hours

Environment

Temp: -217 °C

Axial Tilt: 31 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 90,513,357 km

• M1: 82,129 km (0.103 R)
• M2: 773,122 km (0.049 R)
• M3: 1,121,535 km (0.117 R)
• M4: 1,797,867 km (0.118 R)
• M5: 2,512,646 km (0.064 R)
• M6: 2,717,894 km (0.103 R)
• M7: 4,511,423 km (0.092 R)
• M8: 7,076,428 km (0.076 R)
• M9: 19,861,361 km (0.051 R)
• M10: 21,593,405 km (0.118 R)
• M11: 25,275,757 km (0.08 R)
• M12: 27,978,841 km (0.045 R)
• M13: 28,233,756 km (0.099 R)
• M14: 28,490,166 km (0.116 R)

Planet 9 - Ice Giant

Semi-Major Axis: 10.34 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 969.5

Radius: 4.4

Gravity: 50.08 G

Time & Orbit

Eccentricity (e): 0.141

Orbit Range: 8.88 AU - 11.8 AU

Year: 21812 Days

Day: 16.4 Hours

Environment

Temp: -225 °C

Axial Tilt: 26.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (36)

Outer Limit: 90,513,357 km

• M1: 54,753 km (0.079 R)
• M2: 223,050 km (0.065 R)
• M3: 404,812 km (0.117 R)
• M4: 582,235 km (0.117 R)
• M5: 725,400 km (0.093 R)
• M6: 1,274,275 km (0.094 R)
• M7: 1,700,329 km (0.108 R)
• M8: 1,895,255 km (0.117 R)
• M9: 3,365,055 km (0.042 R)
• M10: 3,516,747 km (0.076 R)
• M11: 6,566,898 km (0.083 R)
• M12: 7,398,363 km (0.084 R)
• M13: 8,802,339 km (0.113 R)
• M14: 8,974,975 km (0.095 R)
• M15: 9,566,784 km (0.116 R)
• M16: 11,913,526 km (0.116 R)
• M17: 12,627,706 km (0.071 R)
• M18: 12,847,465 km (0.077 R)
• M19: 13,906,618 km (0.093 R)
• M20: 15,269,604 km (0.105 R)
• M21: 17,251,776 km (0.079 R)
• M22: 17,431,892 km (0.108 R)
• M23: 18,917,848 km (0.051 R)
• M24: 27,139,747 km (0.092 R)
• M25: 29,642,220 km (0.086 R)
• M26: 33,959,165 km (0.114 R)
• M27: 40,552,841 km (0.094 R)
• M28: 44,485,171 km (0.062 R)
• M29: 49,023,970 km (0.085 R)
• M30: 49,566,711 km (0.115 R)
• M31: 56,197,936 km (0.095 R)
• M32: 58,600,927 km (0.115 R)
• M33: 69,807,004 km (0.078 R)
• M34: 73,286,202 km (0.096 R)
• M35: 82,358,864 km (0.058 R)
• M36: 86,767,064 km (0.119 R)

Kuiper Belt

Range: 30 - 59 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 360 - 12,739 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit