🌌 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: 2.38

Radius: 1.41

Gravity: 1.2 G

Time & Orbit

Eccentricity (e): 0.155

Orbit Range: 0.49 AU - 0.67 AU

Year: 290 Days

Day: 37.8 Hours

Environment

Temp: -133 °C

Axial Tilt: 18.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.85 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 15.4

Radius: 10.6

Gravity: 0.14 G

Time & Orbit

Eccentricity (e): 0.243

Orbit Range: 0.64 AU - 1.06 AU

Year: 514 Days

Day: 7.5 Hours

Environment

Temp: -158 °C

Axial Tilt: 27.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (5)

Outer Limit: 83,302,529 km

• M1: 135,236 km (0.099 R)
• M2: 530,324 km (0.078 R)
• M3: 880,084 km (0.078 R)
• M4: 1,292,526 km (0.09 R)
• M5: 1,870,422 km (0.047 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.2 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 935.7

Radius: 9.2

Gravity: 11.06 G

Time & Orbit

Eccentricity (e): 0.13

Orbit Range: 1.04 AU - 1.36 AU

Year: 862 Days

Day: 9 Hours

Environment

Temp: -169 °C

Axial Tilt: 38.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 83,302,529 km

• M1: 114,442 km (0.11 R)
• M2: 423,212 km (0.058 R)
• M3: 776,413 km (0.045 R)
• M4: 1,166,714 km (0.107 R)
• M5: 2,255,337 km (0.12 R)
• M6: 2,596,869 km (0.113 R)
• M7: 3,160,853 km (0.118 R)
• M8: 3,575,838 km (0.074 R)
• M9: 3,978,406 km (0.104 R)
• M10: 4,393,839 km (0.11 R)
• M11: 6,621,800 km (0.115 R)
• M12: 7,724,187 km (0.119 R)
• M13: 8,861,131 km (0.051 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.21 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 694.3

Radius: 10.9

Gravity: 5.84 G

Time & Orbit

Eccentricity (e): 0.16

Orbit Range: 1.02 AU - 1.4 AU

Year: 873 Days

Day: 12.3 Hours

Environment

Temp: -158 °C

Axial Tilt: 4.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 83,302,529 km

• M1: 135,536 km (0.105 R)
• M2: 499,507 km (0.061 R)
• M3: 857,645 km (0.071 R)
• M4: 1,296,116 km (0.057 R)
• M5: 1,639,293 km (0.025 R)
• M6: 2,183,531 km (0.092 R)
• M7: 2,630,379 km (0.1 R)
• M8: 3,244,329 km (0.079 R)
• M9: 3,982,445 km (0.095 R)
• M10: 5,851,820 km (0.108 R)
• M11: 6,329,037 km (0.073 R)
• M12: 7,267,764 km (0.098 R)
• M13: 7,673,174 km (0.09 R)
• M14: 8,043,429 km (0.113 R)
• M15: 8,900,176 km (0.067 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.23 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 380.4

Radius: 11.9

Gravity: 2.69 G

Time & Orbit

Eccentricity (e): 0.223

Orbit Range: 0.96 AU - 1.5 AU

Year: 895 Days

Day: 8.2 Hours

Environment

Temp: -159 °C

Axial Tilt: 10.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 83,302,529 km

• M1: 153,188 km (0.087 R)
• M2: 775,964 km (0.077 R)
• M3: 1,286,542 km (0.068 R)
• M4: 1,955,843 km (0.108 R)
• M5: 2,391,920 km (0.037 R)
• M6: 4,078,337 km (0.045 R)
• M7: 4,522,643 km (0.071 R)
• M8: 4,897,984 km (0.107 R)
• M9: 5,600,495 km (0.096 R)
• M10: 7,012,400 km (0.056 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.22 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 133.5

Radius: 10.9

Gravity: 1.12 G

Time & Orbit

Eccentricity (e): 0.09

Orbit Range: 2.02 AU - 2.42 AU

Year: 2170 Days

Day: 7.2 Hours

Environment

Temp: -203 °C

Axial Tilt: 43 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 83,302,529 km

• M1: 135,536 km (0.107 R)
• M2: 478,564 km (0.1 R)
• M3: 1,007,990 km (0.058 R)
• M4: 1,433,297 km (0.115 R)
• M5: 1,773,632 km (0.106 R)
• M6: 2,241,874 km (0.1 R)
• M7: 2,816,778 km (0.077 R)
• M8: 3,545,619 km (0.053 R)
• M9: 4,228,982 km (0.102 R)
• M10: 5,338,400 km (0.114 R)
• M11: 6,366,586 km (0.086 R)
• M12: 8,894,042 km (0.114 R)
• M13: 9,946,314 km (0.108 R)

Planet 7 - Ice Giant

Semi-Major Axis: 10.3 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 764.6

Radius: 4.4

Gravity: 39.49 G

Time & Orbit

Eccentricity (e): 0.245

Orbit Range: 7.78 AU - 12.82 AU

Year: 21685 Days

Day: 19 Hours

Environment

Temp: -226 °C

Axial Tilt: 23.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (40)

Outer Limit: 83,302,529 km

• M1: 55,501 km (0.119 R)
• M2: 463,753 km (0.106 R)
• M3: 625,768 km (0.062 R)
• M4: 1,786,049 km (0.081 R)
• M5: 2,302,461 km (0.089 R)
• M6: 2,912,521 km (0.118 R)
• M7: 3,810,707 km (0.095 R)
• M8: 4,480,007 km (0.08 R)
• M9: 5,462,865 km (0.101 R)
• M10: 6,178,392 km (0.079 R)
• M11: 6,400,246 km (0.077 R)
• M12: 7,742,288 km (0.104 R)
• M13: 8,920,371 km (0.066 R)
• M14: 10,212,897 km (0.089 R)
• M15: 11,293,592 km (0.075 R)
• M16: 12,169,936 km (0.087 R)
• M17: 12,660,019 km (0.105 R)
• M18: 13,980,819 km (0.097 R)
• M19: 14,209,404 km (0.091 R)
• M20: 17,679,028 km (0.06 R)
• M21: 17,946,509 km (0.107 R)
• M22: 19,513,397 km (0.029 R)
• M23: 19,895,021 km (0.119 R)
• M24: 20,087,553 km (0.105 R)
• M25: 21,572,163 km (0.105 R)
• M26: 22,082,890 km (0.073 R)
• M27: 25,430,441 km (0.078 R)
• M28: 42,358,787 km (0.079 R)
• M29: 42,677,580 km (0.064 R)
• M30: 42,837,649 km (0.106 R)
• M31: 49,926,644 km (0.107 R)
• M32: 50,104,216 km (0.056 R)
• M33: 52,269,646 km (0.069 R)
• M34: 53,561,124 km (0.069 R)
• M35: 55,062,937 km (0.072 R)
• M36: 64,036,865 km (0.094 R)
• M37: 64,456,935 km (0.094 R)
• M38: 64,667,569 km (0.085 R)
• M39: 65,090,333 km (0.086 R)
• M40: 69,199,038 km (0.06 R)

Kuiper Belt

Range: 30 - 46 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 273 - 19,150 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit