🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.28 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.55 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.79

Radius: 1.87

Gravity: 1.37 G

Time & Orbit

Eccentricity (e): 0.03

Orbit Range: 0.53 AU - 0.57 AU

Year: 259 Days

Day: 44 Hours

Environment

Temp: -126 °C

Axial Tilt: 96.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.87 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 906.5

Radius: 8

Gravity: 14.16 G

Time & Orbit

Eccentricity (e): 0.052

Orbit Range: 0.82 AU - 0.92 AU

Year: 516 Days

Day: 7 Hours

Environment

Temp: -144 °C

Axial Tilt: 8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 73,065,166 km

• M1: 99,483 km (0.095 R)
• M2: 382,223 km (0.087 R)
• M3: 737,667 km (0.073 R)
• M4: 1,042,548 km (0.111 R)
• M5: 1,396,945 km (0.076 R)
• M6: 1,839,007 km (0.111 R)
• M7: 2,102,598 km (0.109 R)
• M8: 2,421,840 km (0.109 R)
• M9: 2,751,254 km (0.032 R)
• M10: 3,435,216 km (0.108 R)
• M11: 4,363,321 km (0.055 R)
• M12: 4,707,247 km (0.1 R)
• M13: 5,035,464 km (0.081 R)
• M14: 5,485,006 km (0.104 R)
• M15: 5,793,178 km (0.059 R)
• M16: 6,306,448 km (0.118 R)
• M17: 6,584,401 km (0.06 R)
• M18: 7,271,952 km (0.105 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.13 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 496.7

Radius: 10.9

Gravity: 4.18 G

Time & Orbit

Eccentricity (e): 0.209

Orbit Range: 0.89 AU - 1.37 AU

Year: 764 Days

Day: 6 Hours

Environment

Temp: -173 °C

Axial Tilt: 137.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 73,065,166 km

• M1: 135,536 km (0.063 R)
• M2: 502,948 km (0.082 R)
• M3: 857,645 km (0.108 R)
• M4: 1,395,748 km (0.056 R)
• M5: 2,217,489 km (0.095 R)
• M6: 2,692,313 km (0.077 R)
• M7: 3,297,586 km (0.06 R)
• M8: 3,639,716 km (0.089 R)
• M9: 4,198,165 km (0.107 R)
• M10: 4,585,474 km (0.082 R)
• M11: 4,979,964 km (0.094 R)
• M12: 5,468,700 km (0.087 R)
• M13: 5,951,003 km (0.094 R)
• M14: 6,542,513 km (0.073 R)
• M15: 7,129,835 km (0.051 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.31 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 258.5

Radius: 12.2

Gravity: 1.74 G

Time & Orbit

Eccentricity (e): 0.044

Orbit Range: 1.25 AU - 1.37 AU

Year: 953 Days

Day: 9 Hours

Environment

Temp: -162 °C

Axial Tilt: 37.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 73,065,166 km

• M1: 263,591 km (0.077 R)
• M2: 695,032 km (0.042 R)
• M3: 1,476,082 km (0.092 R)
• M4: 2,195,498 km (0.037 R)
• M5: 2,684,534 km (0.089 R)
• M6: 3,369,991 km (0.084 R)
• M7: 5,327,928 km (0.049 R)
• M8: 5,992,143 km (0.067 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.96 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 39.7

Radius: 13.4

Gravity: 0.22 G

Time & Orbit

Eccentricity (e): 0.246

Orbit Range: 1.48 AU - 2.44 AU

Year: 1745 Days

Day: 8.4 Hours

Environment

Temp: -190 °C

Axial Tilt: 37.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 73,065,166 km

• M1: 168,597 km (0.032 R)
• M2: 636,090 km (0.111 R)
• M3: 1,613,712 km (0.101 R)
• M4: 2,120,999 km (0.098 R)
• M5: 2,805,409 km (0.097 R)
• M6: 3,234,306 km (0.118 R)
• M7: 3,948,037 km (0.106 R)
• M8: 4,504,093 km (0.106 R)
• M9: 5,253,129 km (0.111 R)

Planet 6 - Gas Giant

Semi-Major Axis: 4.35 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 481.3

Radius: 13.9

Gravity: 2.49 G

Time & Orbit

Eccentricity (e): 0.037

Orbit Range: 4.19 AU - 4.51 AU

Year: 5769 Days

Day: 9 Hours

Environment

Temp: -220 °C

Axial Tilt: 5.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 73,065,166 km

• M1: 172,935 km (0.076 R)
• M2: 770,130 km (0.046 R)
• M3: 1,612,216 km (0.077 R)
• M4: 2,426,477 km (0.088 R)
• M5: 3,339,024 km (0.116 R)
• M6: 3,842,421 km (0.066 R)
• M7: 4,276,854 km (0.064 R)
• M8: 4,951,241 km (0.09 R)
• M9: 5,812,176 km (0.107 R)
• M10: 8,962,708 km (0.041 R)
• M11: 9,485,103 km (0.11 R)
• M12: 10,591,380 km (0.108 R)
• M13: 11,267,562 km (0.116 R)
• M14: 12,508,177 km (0.101 R)
• M15: 13,008,881 km (0.09 R)
• M16: 14,591,776 km (0.116 R)
• M17: 16,006,374 km (0.12 R)
• M18: 19,238,735 km (0.089 R)
• M19: 20,868,305 km (0.047 R)
• M20: 21,360,482 km (0.085 R)
• M21: 22,883,687 km (0.093 R)
• M22: 23,938,651 km (0.063 R)

Planet 7 - Ice Giant

Semi-Major Axis: 8.56 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 874.5

Radius: 3.9

Gravity: 57.5 G

Time & Orbit

Eccentricity (e): 0.214

Orbit Range: 6.73 AU - 10.39 AU

Year: 15924 Days

Day: 21.7 Hours

Environment

Temp: -225 °C

Axial Tilt: 33 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 73,065,166 km

• M1: 48,470 km (0.114 R)
• M2: 1,155,644 km (0.095 R)
• M3: 1,337,555 km (0.116 R)
• M4: 1,741,170 km (0.033 R)
• M5: 2,000,124 km (0.114 R)
• M6: 3,815,194 km (0.11 R)
• M7: 4,123,665 km (0.044 R)
• M8: 8,182,405 km (0.045 R)
• M9: 9,727,003 km (0.077 R)
• M10: 9,897,246 km (0.065 R)
• M11: 11,330,543 km (0.096 R)
• M12: 11,455,906 km (0.061 R)
• M13: 12,293,355 km (0.084 R)
• M14: 14,453,697 km (0.096 R)
• M15: 16,611,198 km (0.042 R)
• M16: 20,698,960 km (0.111 R)
• M17: 30,543,547 km (0.106 R)
• M18: 31,153,457 km (0.103 R)
• M19: 32,523,624 km (0.088 R)
• M20: 40,710,817 km (0.098 R)
• M21: 42,346,968 km (0.088 R)
• M22: 45,275,496 km (0.106 R)
• M23: 50,338,636 km (0.078 R)
• M24: 64,518,869 km (0.116 R)

Planet 8 - Ice Giant

Semi-Major Axis: 11.08 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 441.2

Radius: 3.6

Gravity: 34.04 G

Time & Orbit

Eccentricity (e): 0.095

Orbit Range: 10.03 AU - 12.13 AU

Year: 23450 Days

Day: 16.4 Hours

Environment

Temp: -242 °C

Axial Tilt: 25.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (31)

Outer Limit: 73,065,166 km

• M1: 44,879 km (0.054 R)
• M2: 184,005 km (0.064 R)
• M3: 384,915 km (0.06 R)
• M4: 811,718 km (0.108 R)
• M5: 1,066,932 km (0.03 R)
• M6: 1,373,159 km (0.082 R)
• M7: 1,699,731 km (0.106 R)
• M8: 2,597,917 km (0.053 R)
• M9: 4,051,559 km (0.047 R)
• M10: 7,152,274 km (0.066 R)
• M11: 7,434,117 km (0.041 R)
• M12: 8,478,759 km (0.075 R)
• M13: 12,663,310 km (0.116 R)
• M14: 13,854,259 km (0.086 R)
• M15: 14,365,734 km (0.105 R)
• M16: 16,537,596 km (0.093 R)
• M17: 16,782,637 km (0.1 R)
• M18: 21,518,607 km (0.03 R)
• M19: 23,514,990 km (0.087 R)
• M20: 24,137,018 km (0.077 R)
• M21: 32,352,634 km (0.108 R)
• M22: 33,903,216 km (0.076 R)
• M23: 34,830,124 km (0.098 R)
• M24: 40,453,359 km (0.106 R)
• M25: 43,789,690 km (0.055 R)
• M26: 43,945,422 km (0.106 R)
• M27: 44,888,487 km (0.083 R)
• M28: 49,806,068 km (0.08 R)
• M29: 49,976,011 km (0.106 R)
• M30: 51,521,955 km (0.113 R)
• M31: 64,044,793 km (0.106 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: 362 - 19,069 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit