🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.29 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.58 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.48

Radius: 0.75

Gravity: 0.85 G

Time & Orbit

Eccentricity (e): 0.05

Orbit Range: 0.55 AU - 0.61 AU

Year: 290 Days

Day: 13.9 Hours

Environment

Temp: -132 °C

Axial Tilt: 0.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 40,161,262 km

• M1: 325,525 km (0.092 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.61 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.94

Radius: 1.73

Gravity: 1.32 G

Time & Orbit

Eccentricity (e): 0.022

Orbit Range: 0.6 AU - 0.62 AU

Year: 313 Days

Day: 29.8 Hours

Environment

Temp: -122 °C

Axial Tilt: 31.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 40,161,262 km

• M1: 48,919 km (0.079 R)
• M2: 303,534 km (0.095 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.69 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 839.5

Radius: 11.8

Gravity: 6.03 G

Time & Orbit

Eccentricity (e): 0.011

Orbit Range: 0.68 AU - 0.7 AU

Year: 376 Days

Day: 8.1 Hours

Environment

Temp: -145 °C

Axial Tilt: 12.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 40,161,262 km

• M1: 146,756 km (0.026 R)
• M2: 533,466 km (0.111 R)
• M3: 949,348 km (0.077 R)
• M4: 1,420,133 km (0.086 R)
• M5: 1,965,866 km (0.071 R)
• M6: 2,356,316 km (0.073 R)
• M7: 3,128,241 km (0.107 R)
• M8: 3,641,063 km (0.119 R)
• M9: 4,402,366 km (0.117 R)
• M10: 5,141,529 km (0.079 R)
• M11: 5,606,928 km (0.105 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.47 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 718.6

Radius: 9.3

Gravity: 8.31 G

Time & Orbit

Eccentricity (e): 0.047

Orbit Range: 1.4 AU - 1.54 AU

Year: 1169 Days

Day: 14.2 Hours

Environment

Temp: -168 °C

Axial Tilt: 27.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 40,161,262 km

• M1: 115,639 km (0.093 R)
• M2: 564,882 km (0.065 R)
• M3: 870,360 km (0.04 R)
• M4: 1,382,733 km (0.051 R)
• M5: 1,891,067 km (0.063 R)
• M6: 2,668,826 km (0.045 R)
• M7: 3,067,804 km (0.1 R)
• M8: 3,475,757 km (0.114 R)
• M9: 3,903,308 km (0.115 R)
• M10: 4,582,482 km (0.056 R)
• M11: 4,979,814 km (0.056 R)
• M12: 7,271,653 km (0.062 R)
• M13: 7,786,868 km (0.118 R)
• M14: 9,064,584 km (0.045 R)
• M15: 9,661,629 km (0.077 R)
• M16: 10,063,598 km (0.037 R)
• M17: 10,867,986 km (0.12 R)
• M18: 11,370,934 km (0.064 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.54 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 535.5

Radius: 8

Gravity: 8.37 G

Time & Orbit

Eccentricity (e): 0.02

Orbit Range: 1.51 AU - 1.57 AU

Year: 1254 Days

Day: 14.5 Hours

Environment

Temp: -186 °C

Axial Tilt: 7.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 40,161,262 km

• M1: 99,483 km (0.117 R)
• M2: 380,876 km (0.098 R)
• M3: 636,838 km (0.099 R)
• M4: 989,291 km (0.026 R)
• M5: 1,266,795 km (0.105 R)
• M6: 1,570,628 km (0.102 R)
• M7: 1,903,334 km (0.087 R)
• M8: 2,260,424 km (0.079 R)
• M9: 3,250,762 km (0.061 R)
• M10: 3,763,284 km (0.101 R)
• M11: 5,182,070 km (0.072 R)
• M12: 5,462,865 km (0.066 R)
• M13: 6,099,105 km (0.111 R)
• M14: 6,950,616 km (0.114 R)
• M15: 8,116,881 km (0.045 R)
• M16: 9,646,519 km (0.106 R)
• M17: 10,010,940 km (0.08 R)
• M18: 10,574,774 km (0.064 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.66 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 55.3

Radius: 13.6

Gravity: 0.3 G

Time & Orbit

Eccentricity (e): 0.032

Orbit Range: 1.61 AU - 1.71 AU

Year: 1403 Days

Day: 5.7 Hours

Environment

Temp: -174 °C

Axial Tilt: 43.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (5)

Outer Limit: 40,161,262 km

• M1: 169,195 km (0.118 R)
• M2: 707,598 km (0.111 R)
• M3: 1,859,801 km (0.065 R)
• M4: 3,062,568 km (0.057 R)
• M5: 4,256,807 km (0.114 R)

Planet 7 - Ice Giant

Semi-Major Axis: 6.97 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 276.5

Radius: 7.5

Gravity: 4.92 G

Time & Orbit

Eccentricity (e): 0.057

Orbit Range: 6.57 AU - 7.37 AU

Year: 12071 Days

Day: 23 Hours

Environment

Temp: -228 °C

Axial Tilt: 39.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 40,161,262 km

• M1: 93,349 km (0.104 R)
• M2: 394,938 km (0.056 R)
• M3: 749,934 km (0.114 R)
• M4: 1,218,923 km (0.115 R)
• M5: 2,581,461 km (0.108 R)
• M6: 3,061,820 km (0.094 R)
• M7: 3,647,944 km (0.104 R)
• M8: 4,836,200 km (0.046 R)
• M9: 10,401,091 km (0.078 R)
• M10: 11,046,307 km (0.06 R)
• M11: 12,416,025 km (0.112 R)
• M12: 15,425,635 km (0.087 R)
• M13: 17,891,307 km (0.12 R)
• M14: 19,180,841 km (0.055 R)
• M15: 21,704,108 km (0.099 R)
• M16: 27,120,149 km (0.062 R)

Kuiper Belt

Range: 30 - 60 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 162 - 18,973 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit