🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.26 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.51 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.87

Radius: 1.88

Gravity: 1.38 G

Time & Orbit

Eccentricity (e): 0.218

Orbit Range: 0.4 AU - 0.62 AU

Year: 232 Days

Day: 38.9 Hours

Environment

Temp: -115 °C

Axial Tilt: 28.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 62,918,779 km

• M1: 143,464 km (0.049 R)
• M2: 178,620 km (0.054 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.72 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 85.1

Radius: 10.3

Gravity: 0.8 G

Time & Orbit

Eccentricity (e): 0.168

Orbit Range: 0.6 AU - 0.84 AU

Year: 388 Days

Day: 6.2 Hours

Environment

Temp: -143 °C

Axial Tilt: 10.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 62,918,779 km

• M1: 128,205 km (0.1 R)
• M2: 556,055 km (0.076 R)
• M3: 972,386 km (0.075 R)
• M4: 1,585,887 km (0.04 R)
• M5: 1,934,600 km (0.065 R)
• M6: 2,427,375 km (0.105 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.81 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 685.9

Radius: 8.4

Gravity: 9.72 G

Time & Orbit

Eccentricity (e): 0.162

Orbit Range: 0.68 AU - 0.94 AU

Year: 464 Days

Day: 5.9 Hours

Environment

Temp: -156 °C

Axial Tilt: 19.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 62,918,779 km

• M1: 104,419 km (0.086 R)
• M2: 369,806 km (0.114 R)
• M3: 633,397 km (0.119 R)
• M4: 959,820 km (0.115 R)
• M5: 1,303,745 km (0.088 R)
• M6: 1,775,128 km (0.111 R)
• M7: 2,413,014 km (0.06 R)
• M8: 2,712,060 km (0.051 R)
• M9: 3,035,939 km (0.079 R)
• M10: 3,458,553 km (0.094 R)
• M11: 3,973,768 km (0.11 R)
• M12: 4,509,628 km (0.076 R)
• M13: 4,810,619 km (0.077 R)
• M14: 5,656,445 km (0.107 R)
• M15: 5,935,744 km (0.084 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.2 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 228

Radius: 12.2

Gravity: 1.53 G

Time & Orbit

Eccentricity (e): 0.155

Orbit Range: 1.01 AU - 1.39 AU

Year: 836 Days

Day: 6.3 Hours

Environment

Temp: -177 °C

Axial Tilt: 22.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 62,918,779 km

• M1: 151,692 km (0.118 R)
• M2: 533,765 km (0.045 R)
• M3: 1,043,595 km (0.12 R)
• M4: 1,477,279 km (0.104 R)
• M5: 1,877,603 km (0.099 R)
• M6: 2,504,119 km (0.086 R)
• M7: 3,115,824 km (0.094 R)
• M8: 3,606,954 km (0.082 R)
• M9: 4,094,344 km (0.112 R)
• M10: 5,949,956 km (0.092 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.56 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 632.7

Radius: 14.6

Gravity: 2.97 G

Time & Orbit

Eccentricity (e): 0.139

Orbit Range: 1.34 AU - 1.78 AU

Year: 1239 Days

Day: 9.2 Hours

Environment

Temp: -173 °C

Axial Tilt: 5.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 62,918,779 km

• M1: 184,155 km (0.026 R)
• M2: 679,623 km (0.116 R)
• M3: 1,160,879 km (0.069 R)
• M4: 1,678,638 km (0.06 R)
• M5: 2,219,284 km (0.076 R)
• M6: 2,837,722 km (0.071 R)
• M7: 3,434,767 km (0.114 R)
• M8: 5,313,866 km (0.1 R)
• M9: 5,790,335 km (0.069 R)
• M10: 7,318,777 km (0.078 R)
• M11: 8,450,784 km (0.105 R)
• M12: 9,515,472 km (0.102 R)

Planet 6 - Gas Giant

Semi-Major Axis: 4.3 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 576.2

Radius: 12.3

Gravity: 3.81 G

Time & Orbit

Eccentricity (e): 0.184

Orbit Range: 3.51 AU - 5.09 AU

Year: 5669 Days

Day: 12.3 Hours

Environment

Temp: -216 °C

Axial Tilt: 38.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 62,918,779 km

• M1: 153,039 km (0.037 R)
• M2: 646,562 km (0.08 R)
• M3: 1,054,067 km (0.106 R)
• M4: 1,452,745 km (0.096 R)
• M5: 2,554,084 km (0.083 R)
• M6: 3,671,431 km (0.12 R)
• M7: 5,312,220 km (0.093 R)
• M8: 6,139,497 km (0.104 R)
• M9: 7,682,599 km (0.045 R)
• M10: 11,098,516 km (0.12 R)
• M11: 11,521,280 km (0.058 R)
• M12: 11,906,046 km (0.116 R)
• M13: 12,299,339 km (0.081 R)
• M14: 13,479,067 km (0.106 R)
• M15: 15,649,583 km (0.096 R)
• M16: 16,972,028 km (0.098 R)
• M17: 18,893,762 km (0.11 R)
• M18: 20,462,296 km (0.093 R)
• M19: 21,968,747 km (0.084 R)
• M20: 22,786,748 km (0.051 R)
• M21: 23,624,945 km (0.081 R)
• M22: 24,641,911 km (0.075 R)
• M23: 28,214,308 km (0.101 R)
• M24: 29,897,434 km (0.111 R)

Planet 7 - Ice Giant

Semi-Major Axis: 8.25 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 682.5

Radius: 5.3

Gravity: 24.3 G

Time & Orbit

Eccentricity (e): 0.155

Orbit Range: 6.97 AU - 9.53 AU

Year: 15067 Days

Day: 17.7 Hours

Environment

Temp: -227 °C

Axial Tilt: 9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 62,918,779 km

• M1: 66,421 km (0.103 R)
• M2: 318,494 km (0.033 R)
• M3: 902,674 km (0.097 R)
• M4: 1,132,755 km (0.109 R)
• M5: 3,822,974 km (0.11 R)
• M6: 6,104,341 km (0.099 R)
• M7: 6,304,204 km (0.081 R)
• M8: 10,128,823 km (0.085 R)
• M9: 10,296,522 km (0.105 R)
• M10: 11,103,902 km (0.075 R)
• M11: 12,713,725 km (0.111 R)
• M12: 15,558,627 km (0.119 R)
• M13: 17,728,245 km (0.102 R)
• M14: 18,969,758 km (0.05 R)
• M15: 24,116,972 km (0.119 R)
• M16: 29,097,085 km (0.104 R)
• M17: 29,436,373 km (0.1 R)
• M18: 33,840,983 km (0.103 R)
• M19: 38,258,159 km (0.112 R)
• M20: 48,531,494 km (0.076 R)
• M21: 51,277,213 km (0.116 R)
• M22: 59,403,818 km (0.042 R)
• M23: 60,683,179 km (0.027 R)

Kuiper Belt

Range: 30 - 54 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 369 - 19,357 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit