🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.34 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.67 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.56

Radius: 1.46

Gravity: 1.2 G

Time & Orbit

Eccentricity (e): 0.209

Orbit Range: 0.53 AU - 0.81 AU

Year: 349 Days

Day: 47.3 Hours

Environment

Temp: -134 °C

Axial Tilt: 27.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.8 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 332.1

Radius: 9.3

Gravity: 3.84 G

Time & Orbit

Eccentricity (e): 0.017

Orbit Range: 0.79 AU - 0.81 AU

Year: 455 Days

Day: 6.5 Hours

Environment

Temp: -153 °C

Axial Tilt: 32.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 56,935,105 km

• M1: 115,938 km (0.097 R)
• M2: 415,433 km (0.048 R)
• M3: 774,169 km (0.068 R)
• M4: 1,183,918 km (0.11 R)
• M5: 1,530,536 km (0.111 R)
• M6: 1,834,668 km (0.119 R)
• M7: 2,433,509 km (0.082 R)
• M8: 4,005,483 km (0.064 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.85 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 215.1

Radius: 12.1

Gravity: 1.47 G

Time & Orbit

Eccentricity (e): 0.209

Orbit Range: 0.67 AU - 1.03 AU

Year: 498 Days

Day: 10.3 Hours

Environment

Temp: -147 °C

Axial Tilt: 18.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 56,935,105 km

• M1: 150,944 km (0.058 R)
• M2: 536,159 km (0.082 R)
• M3: 1,122,433 km (0.063 R)
• M4: 1,514,080 km (0.074 R)
• M5: 1,912,459 km (0.071 R)
• M6: 2,332,081 km (0.114 R)
• M7: 3,277,540 km (0.08 R)
• M8: 4,185,599 km (0.063 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.94 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 926.9

Radius: 10.7

Gravity: 8.1 G

Time & Orbit

Eccentricity (e): 0.094

Orbit Range: 0.85 AU - 1.03 AU

Year: 579 Days

Day: 5.5 Hours

Environment

Temp: -159 °C

Axial Tilt: 85.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 56,935,105 km

• M1: 133,591 km (0.063 R)
• M2: 534,962 km (0.111 R)
• M3: 917,933 km (0.036 R)
• M4: 1,417,589 km (0.1 R)
• M5: 1,948,811 km (0.096 R)
• M6: 2,367,087 km (0.108 R)
• M7: 3,207,229 km (0.079 R)
• M8: 3,880,270 km (0.112 R)
• M9: 4,677,477 km (0.045 R)
• M10: 5,673,200 km (0.119 R)
• M11: 6,034,778 km (0.09 R)
• M12: 6,554,631 km (0.066 R)
• M13: 6,889,281 km (0.083 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.71 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 211.4

Radius: 11.9

Gravity: 1.49 G

Time & Orbit

Eccentricity (e): 0.237

Orbit Range: 2.07 AU - 3.35 AU

Year: 2837 Days

Day: 9.1 Hours

Environment

Temp: -202 °C

Axial Tilt: 19.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 56,935,105 km

• M1: 160,668 km (0.116 R)
• M2: 536,757 km (0.069 R)
• M3: 1,255,725 km (0.095 R)
• M4: 2,603,901 km (0.115 R)
• M5: 4,498,408 km (0.087 R)
• M6: 5,984,962 km (0.097 R)
• M7: 6,764,517 km (0.099 R)
• M8: 9,641,284 km (0.116 R)
• M9: 11,205,329 km (0.096 R)

Planet 6 - Ice Giant

Semi-Major Axis: 6.64 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 515.7

Radius: 7.1

Gravity: 10.23 G

Time & Orbit

Eccentricity (e): 0.074

Orbit Range: 6.15 AU - 7.13 AU

Year: 10879 Days

Day: 20.5 Hours

Environment

Temp: -228 °C

Axial Tilt: 39 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 56,935,105 km

• M1: 424,409 km (0.055 R)
• M2: 1,098,796 km (0.108 R)
• M3: 1,596,808 km (0.12 R)
• M4: 2,045,152 km (0.061 R)
• M5: 2,345,395 km (0.053 R)
• M6: 2,968,770 km (0.118 R)
• M7: 4,510,974 km (0.09 R)
• M8: 5,570,875 km (0.099 R)
• M9: 6,339,808 km (0.091 R)
• M10: 7,458,800 km (0.096 R)
• M11: 12,156,323 km (0.075 R)
• M12: 13,084,129 km (0.091 R)
• M13: 16,426,145 km (0.1 R)
• M14: 19,509,507 km (0.071 R)
• M15: 27,667,229 km (0.052 R)
• M16: 29,064,174 km (0.092 R)
• M17: 35,008,595 km (0.082 R)
• M18: 40,945,087 km (0.03 R)
• M19: 46,123,866 km (0.113 R)

Planet 7 - Ice Giant

Semi-Major Axis: 8.4 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 479.1

Radius: 4.8

Gravity: 20.79 G

Time & Orbit

Eccentricity (e): 0.1

Orbit Range: 7.56 AU - 9.24 AU

Year: 15479 Days

Day: 16.6 Hours

Environment

Temp: -219 °C

Axial Tilt: 46.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 56,935,105 km

• M1: 60,438 km (0.036 R)
• M2: 324,627 km (0.095 R)
• M3: 564,134 km (0.106 R)
• M4: 1,308,233 km (0.11 R)
• M5: 2,625,742 km (0.111 R)
• M6: 4,183,804 km (0.108 R)
• M7: 5,277,065 km (0.077 R)
• M8: 6,468,313 km (0.076 R)
• M9: 7,693,370 km (0.088 R)
• M10: 8,768,978 km (0.075 R)
• M11: 14,969,212 km (0.056 R)
• M12: 15,392,574 km (0.046 R)
• M13: 18,340,549 km (0.119 R)
• M14: 20,073,940 km (0.109 R)
• M15: 22,094,409 km (0.071 R)
• M16: 23,672,217 km (0.04 R)
• M17: 38,554,962 km (0.079 R)
• M18: 47,753,286 km (0.068 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: 276 - 17,831 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit