🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.27 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.54 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.64

Radius: 1.85

Gravity: 1.36 G

Time & Orbit

Eccentricity (e): 0.223

Orbit Range: 0.42 AU - 0.66 AU

Year: 252 Days

Day: 39.2 Hours

Environment

Temp: -125 °C

Axial Tilt: 38 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 28,916,415 km

• M1: 420,520 km (0.099 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.6 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.17

Radius: 1.36

Gravity: 1.17 G

Time & Orbit

Eccentricity (e): 0.052

Orbit Range: 0.57 AU - 0.63 AU

Year: 296 Days

Day: 27.8 Hours

Environment

Temp: -124 °C

Axial Tilt: 44.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.77 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 322.3

Radius: 15

Gravity: 1.43 G

Time & Orbit

Eccentricity (e): 0.233

Orbit Range: 0.59 AU - 0.95 AU

Year: 430 Days

Day: 10.5 Hours

Environment

Temp: -140 °C

Axial Tilt: 25.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 28,916,415 km

• M1: 187,147 km (0.065 R)
• M2: 961,017 km (0.032 R)
• M3: 1,488,200 km (0.083 R)
• M4: 2,150,320 km (0.059 R)
• M5: 2,805,110 km (0.062 R)
• M6: 3,278,886 km (0.114 R)
• M7: 4,189,937 km (0.052 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.84 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 200.7

Radius: 13.3

Gravity: 1.13 G

Time & Orbit

Eccentricity (e): 0.189

Orbit Range: 0.68 AU - 1 AU

Year: 489 Days

Day: 13.5 Hours

Environment

Temp: -141 °C

Axial Tilt: 44.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 28,916,415 km

• M1: 165,455 km (0.073 R)
• M2: 850,314 km (0.074 R)
• M3: 1,274,424 km (0.104 R)
• M4: 1,706,463 km (0.081 R)
• M5: 2,349,584 km (0.042 R)
• M6: 2,788,056 km (0.056 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.12 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 334.9

Radius: 8.6

Gravity: 4.53 G

Time & Orbit

Eccentricity (e): 0.012

Orbit Range: 1.11 AU - 1.13 AU

Year: 754 Days

Day: 8.4 Hours

Environment

Temp: -171 °C

Axial Tilt: 9.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 28,916,415 km

• M1: 107,262 km (0.041 R)
• M2: 615,894 km (0.069 R)
• M3: 965,953 km (0.12 R)
• M4: 1,393,953 km (0.093 R)
• M5: 2,021,815 km (0.039 R)
• M6: 2,351,978 km (0.095 R)
• M7: 3,006,020 km (0.113 R)
• M8: 3,604,561 km (0.107 R)
• M9: 3,953,124 km (0.101 R)
• M10: 4,781,148 km (0.084 R)
• M11: 5,070,470 km (0.095 R)
• M12: 5,509,241 km (0.052 R)
• M13: 5,954,743 km (0.066 R)
• M14: 6,482,076 km (0.047 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.5 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 165.4

Radius: 9.6

Gravity: 1.79 G

Time & Orbit

Eccentricity (e): 0.01

Orbit Range: 2.48 AU - 2.53 AU

Year: 2513 Days

Day: 8.8 Hours

Environment

Temp: -189 °C

Axial Tilt: 37.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 28,916,415 km

• M1: 119,379 km (0.095 R)
• M2: 1,081,293 km (0.055 R)
• M3: 1,599,201 km (0.1 R)
• M4: 1,901,239 km (0.1 R)
• M5: 2,275,832 km (0.091 R)
• M6: 3,674,572 km (0.12 R)
• M7: 4,640,975 km (0.052 R)
• M8: 6,655,310 km (0.084 R)
• M9: 9,016,563 km (0.072 R)
• M10: 10,959,390 km (0.055 R)
• M11: 11,607,000 km (0.071 R)

Planet 7 - Gas Giant

Semi-Major Axis: 2.94 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 958.1

Radius: 13.4

Gravity: 5.34 G

Time & Orbit

Eccentricity (e): 0.075

Orbit Range: 2.72 AU - 3.16 AU

Year: 3205 Days

Day: 5.6 Hours

Environment

Temp: -206 °C

Axial Tilt: 29.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 28,916,415 km

• M1: 166,652 km (0.028 R)
• M2: 652,097 km (0.093 R)
• M3: 1,471,295 km (0.086 R)
• M4: 2,108,283 km (0.078 R)
• M5: 2,706,674 km (0.04 R)
• M6: 3,191,521 km (0.04 R)
• M7: 4,203,850 km (0.043 R)
• M8: 5,393,602 km (0.1 R)
• M9: 6,643,193 km (0.069 R)
• M10: 8,430,887 km (0.095 R)
• M11: 10,190,906 km (0.076 R)
• M12: 11,820,476 km (0.073 R)
• M13: 12,556,348 km (0.081 R)
• M14: 13,967,804 km (0.119 R)
• M15: 17,394,941 km (0.046 R)
• M16: 18,960,184 km (0.073 R)
• M17: 20,617,579 km (0.113 R)
• M18: 21,956,629 km (0.049 R)
• M19: 22,508,346 km (0.077 R)
• M20: 23,281,917 km (0.115 R)

Planet 8 - Gas Giant

Semi-Major Axis: 3.39 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 954.9

Radius: 13.3

Gravity: 5.4 G

Time & Orbit

Eccentricity (e): 0.027

Orbit Range: 3.3 AU - 3.48 AU

Year: 3969 Days

Day: 13.7 Hours

Environment

Temp: -215 °C

Axial Tilt: 12.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 28,916,415 km

• M1: 167,998 km (0.078 R)
• M2: 603,927 km (0.093 R)
• M3: 1,189,303 km (0.106 R)
• M4: 1,793,379 km (0.111 R)
• M5: 2,326,097 km (0.041 R)
• M6: 4,717,868 km (0.102 R)
• M7: 6,500,626 km (0.116 R)
• M8: 7,844,464 km (0.103 R)
• M9: 8,281,888 km (0.072 R)
• M10: 14,775,782 km (0.116 R)
• M11: 15,388,385 km (0.051 R)
• M12: 16,604,915 km (0.102 R)
• M13: 18,325,440 km (0.098 R)
• M14: 20,026,817 km (0.111 R)
• M15: 26,895,603 km (0.114 R)
• M16: 28,402,053 km (0.115 R)

Kuiper Belt

Range: 30 - 52 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 527 - 19,766 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit