🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.33 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.65 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.25

Radius: 1.6

Gravity: 1.27 G

Time & Orbit

Eccentricity (e): 0.12

Orbit Range: 0.57 AU - 0.73 AU

Year: 333 Days

Day: 25.8 Hours

Environment

Temp: -142 °C

Axial Tilt: 14.2 °

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: 556.7

Radius: 11.2

Gravity: 4.44 G

Time & Orbit

Eccentricity (e): 0.159

Orbit Range: 0.71 AU - 0.99 AU

Year: 498 Days

Day: 12.6 Hours

Environment

Temp: -156 °C

Axial Tilt: 15.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 73,220,358 km

• M1: 139,276 km (0.077 R)
• M2: 590,313 km (0.116 R)
• M3: 947,553 km (0.101 R)
• M4: 1,311,824 km (0.072 R)
• M5: 2,083,300 km (0.075 R)
• M6: 2,431,863 km (0.044 R)
• M7: 2,798,976 km (0.108 R)
• M8: 3,825,068 km (0.101 R)
• M9: 4,325,174 km (0.091 R)
• M10: 5,070,021 km (0.105 R)
• M11: 5,674,846 km (0.081 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.2 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 241.2

Radius: 10.6

Gravity: 2.15 G

Time & Orbit

Eccentricity (e): 0.088

Orbit Range: 1.09 AU - 1.31 AU

Year: 836 Days

Day: 13.3 Hours

Environment

Temp: -166 °C

Axial Tilt: 4.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 73,220,358 km

• M1: 186,399 km (0.095 R)
• M2: 594,801 km (0.103 R)
• M3: 1,343,090 km (0.06 R)
• M4: 2,089,882 km (0.107 R)
• M5: 2,969,667 km (0.067 R)
• M6: 3,678,163 km (0.118 R)
• M7: 4,024,482 km (0.09 R)

Asteroid Belt

Center: 1.74 AU

Composition

Type: Outer System (Icy)

A dense region of planetesimals and debris.

Boundary

Planet 4 - Gas Giant

Semi-Major Axis: 2.28 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 339

Radius: 10.5

Gravity: 3.07 G

Time & Orbit

Eccentricity (e): 0.116

Orbit Range: 2.02 AU - 2.54 AU

Year: 2189 Days

Day: 7.1 Hours

Environment

Temp: -188 °C

Axial Tilt: 22.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 73,220,358 km

• M1: 130,898 km (0.111 R)
• M2: 495,169 km (0.094 R)
• M3: 908,957 km (0.116 R)
• M4: 1,316,461 km (0.085 R)
• M5: 1,667,567 km (0.115 R)
• M6: 2,059,663 km (0.078 R)
• M7: 2,861,358 km (0.077 R)
• M8: 3,211,417 km (0.119 R)
• M9: 3,859,326 km (0.063 R)
• M10: 5,436,835 km (0.085 R)
• M11: 5,931,256 km (0.064 R)
• M12: 6,382,144 km (0.074 R)
• M13: 7,789,860 km (0.079 R)
• M14: 9,174,837 km (0.05 R)
• M15: 10,274,531 km (0.1 R)
• M16: 11,532,350 km (0.093 R)
• M17: 12,464,495 km (0.086 R)
• M18: 13,729,943 km (0.1 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.38 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 629

Radius: 8

Gravity: 9.83 G

Time & Orbit

Eccentricity (e): 0.021

Orbit Range: 2.33 AU - 2.43 AU

Year: 2335 Days

Day: 5.2 Hours

Environment

Temp: -188 °C

Axial Tilt: 10.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 73,220,358 km

• M1: 99,483 km (0.106 R)
• M2: 617,690 km (0.084 R)
• M3: 1,094,009 km (0.109 R)
• M4: 1,364,033 km (0.094 R)
• M5: 1,842,747 km (0.065 R)
• M6: 2,204,175 km (0.069 R)
• M7: 2,526,708 km (0.088 R)
• M8: 4,185,150 km (0.082 R)
• M9: 4,682,264 km (0.098 R)
• M10: 5,745,007 km (0.098 R)
• M11: 6,466,069 km (0.075 R)
• M12: 7,450,273 km (0.101 R)
• M13: 8,792,316 km (0.118 R)
• M14: 9,228,094 km (0.086 R)
• M15: 9,572,917 km (0.046 R)
• M16: 10,178,938 km (0.096 R)
• M17: 10,584,498 km (0.072 R)
• M18: 14,182,028 km (0.06 R)
• M19: 15,349,789 km (0.105 R)
• M20: 16,681,659 km (0.071 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.99 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 315.3

Radius: 14.6

Gravity: 1.48 G

Time & Orbit

Eccentricity (e): 0.226

Orbit Range: 2.31 AU - 3.67 AU

Year: 3287 Days

Day: 5.4 Hours

Environment

Temp: -196 °C

Axial Tilt: 26.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 73,220,358 km

• M1: 183,557 km (0.067 R)
• M2: 652,696 km (0.091 R)
• M3: 1,981,424 km (0.051 R)
• M4: 2,764,269 km (0.118 R)
• M5: 3,345,008 km (0.106 R)
• M6: 3,968,832 km (0.064 R)
• M7: 5,266,144 km (0.115 R)
• M8: 5,740,220 km (0.1 R)
• M9: 9,695,887 km (0.107 R)
• M10: 10,933,809 km (0.104 R)
• M11: 12,480,801 km (0.073 R)
• M12: 13,070,366 km (0.107 R)
• M13: 13,944,915 km (0.069 R)
• M14: 15,045,507 km (0.063 R)
• M15: 16,804,030 km (0.1 R)

Planet 7 - Ice Giant

Semi-Major Axis: 10.73 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 488.9

Radius: 7.9

Gravity: 7.83 G

Time & Orbit

Eccentricity (e): 0.147

Orbit Range: 9.15 AU - 12.31 AU

Year: 22348 Days

Day: 23.3 Hours

Environment

Temp: -240 °C

Axial Tilt: 12.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 73,220,358 km

• M1: 98,884 km (0.113 R)
• M2: 370,554 km (0.028 R)
• M3: 953,537 km (0.098 R)
• M4: 1,383,481 km (0.057 R)
• M5: 1,844,991 km (0.106 R)
• M6: 2,234,693 km (0.079 R)
• M7: 4,435,726 km (0.087 R)
• M8: 9,183,813 km (0.076 R)
• M9: 12,802,586 km (0.111 R)
• M10: 13,639,885 km (0.106 R)
• M11: 21,992,383 km (0.067 R)
• M12: 42,975,280 km (0.094 R)
• M13: 43,748,252 km (0.117 R)
• M14: 47,588,279 km (0.085 R)
• M15: 51,300,401 km (0.117 R)
• M16: 63,586,575 km (0.108 R)
• M17: 66,834,794 km (0.101 R)
• M18: 67,663,865 km (0.108 R)

Kuiper Belt

Range: 30 - 53 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 503 - 18,584 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit