🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.27 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.53 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.56

Radius: 1.83

Gravity: 1.36 G

Time & Orbit

Eccentricity (e): 0.222

Orbit Range: 0.41 AU - 0.65 AU

Year: 253 Days

Day: 44.5 Hours

Environment

Temp: -117 °C

Axial Tilt: 22.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.59 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.78

Radius: 0.91

Gravity: 0.94 G

Time & Orbit

Eccentricity (e): 0.025

Orbit Range: 0.58 AU - 0.6 AU

Year: 297 Days

Day: 39 Hours

Environment

Temp: -118 °C

Axial Tilt: 17.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 21,510,852 km

• M1: 433,834 km (0.08 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.04 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 769.4

Radius: 13.5

Gravity: 4.22 G

Time & Orbit

Eccentricity (e): 0.096

Orbit Range: 0.94 AU - 1.14 AU

Year: 696 Days

Day: 13.3 Hours

Environment

Temp: -169 °C

Axial Tilt: 32.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 21,510,852 km

• M1: 167,849 km (0.093 R)
• M2: 680,820 km (0.037 R)
• M3: 1,289,683 km (0.111 R)
• M4: 1,979,180 km (0.093 R)
• M5: 4,088,061 km (0.119 R)
• M6: 7,614,382 km (0.049 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.79 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 563.6

Radius: 10

Gravity: 5.64 G

Time & Orbit

Eccentricity (e): 0.177

Orbit Range: 1.47 AU - 2.11 AU

Year: 1571 Days

Day: 11.8 Hours

Environment

Temp: -175 °C

Axial Tilt: 38.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 21,510,852 km

• M1: 124,465 km (0.099 R)
• M2: 443,558 km (0.088 R)
• M3: 947,104 km (0.092 R)
• M4: 1,832,574 km (0.072 R)
• M5: 2,784,615 km (0.101 R)
• M6: 3,831,351 km (0.039 R)
• M7: 4,529,225 km (0.082 R)
• M8: 5,267,491 km (0.111 R)
• M9: 5,721,071 km (0.108 R)
• M10: 7,856,581 km (0.098 R)
• M11: 8,536,802 km (0.116 R)
• M12: 8,861,430 km (0.11 R)
• M13: 9,630,213 km (0.051 R)
• M14: 10,145,129 km (0.08 R)
• M15: 10,951,761 km (0.117 R)
• M16: 11,982,789 km (0.07 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.46 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 127.1

Radius: 11.8

Gravity: 0.91 G

Time & Orbit

Eccentricity (e): 0.246

Orbit Range: 2.61 AU - 4.31 AU

Year: 4222 Days

Day: 13.9 Hours

Environment

Temp: -203 °C

Axial Tilt: 18.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 21,510,852 km

• M1: 146,756 km (0.114 R)
• M2: 570,716 km (0.091 R)
• M3: 1,159,084 km (0.072 R)
• M4: 1,544,748 km (0.044 R)
• M5: 2,600,161 km (0.114 R)
• M6: 2,969,069 km (0.109 R)
• M7: 4,709,790 km (0.101 R)
• M8: 5,486,652 km (0.083 R)
• M9: 6,272,190 km (0.046 R)
• M10: 6,705,425 km (0.06 R)
• M11: 7,518,639 km (0.106 R)
• M12: 14,534,032 km (0.104 R)

Planet 6 - Gas Giant

Semi-Major Axis: 4.22 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 297.3

Radius: 10.2

Gravity: 2.86 G

Time & Orbit

Eccentricity (e): 0.156

Orbit Range: 3.56 AU - 4.88 AU

Year: 5687 Days

Day: 6.2 Hours

Environment

Temp: -204 °C

Axial Tilt: 8.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 21,510,852 km

• M1: 127,009 km (0.101 R)
• M2: 562,488 km (0.063 R)
• M3: 1,773,184 km (0.076 R)
• M4: 2,223,623 km (0.091 R)
• M5: 2,683,636 km (0.066 R)
• M6: 3,024,869 km (0.06 R)
• M7: 4,007,727 km (0.092 R)
• M8: 5,242,807 km (0.117 R)
• M9: 5,697,136 km (0.103 R)
• M10: 6,839,315 km (0.079 R)
• M11: 8,162,808 km (0.076 R)
• M12: 9,224,055 km (0.089 R)
• M13: 10,088,731 km (0.051 R)
• M14: 10,793,038 km (0.099 R)
• M15: 11,309,749 km (0.118 R)
• M16: 11,842,915 km (0.03 R)
• M17: 17,131,799 km (0.098 R)
• M18: 18,436,292 km (0.034 R)
• M19: 20,646,301 km (0.095 R)
• M20: 23,310,789 km (0.104 R)

Planet 7 - Gas Giant

Semi-Major Axis: 5.34 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 579.5

Radius: 13.9

Gravity: 3 G

Time & Orbit

Eccentricity (e): 0.244

Orbit Range: 4.04 AU - 6.64 AU

Year: 8095 Days

Day: 5.2 Hours

Environment

Temp: -226 °C

Axial Tilt: 33.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 21,510,852 km

• M1: 177,423 km (0.071 R)
• M2: 656,136 km (0.112 R)
• M3: 1,263,504 km (0.037 R)
• M4: 1,897,350 km (0.09 R)
• M5: 2,552,439 km (0.084 R)
• M6: 3,721,546 km (0.027 R)
• M7: 5,282,002 km (0.094 R)
• M8: 5,717,032 km (0.118 R)
• M9: 6,311,833 km (0.081 R)
• M10: 7,057,579 km (0.056 R)
• M11: 7,861,518 km (0.109 R)
• M12: 9,381,133 km (0.072 R)
• M13: 13,793,223 km (0.066 R)
• M14: 14,623,341 km (0.106 R)
• M15: 15,549,352 km (0.06 R)
• M16: 20,930,088 km (0.079 R)
• M17: 23,408,925 km (0.076 R)
• M18: 27,071,530 km (0.035 R)
• M19: 27,531,543 km (0.112 R)
• M20: 28,372,882 km (0.054 R)
• M21: 29,231,125 km (0.088 R)
• M22: 30,303,741 km (0.059 R)
• M23: 32,423,842 km (0.078 R)
• M24: 39,024,549 km (0.09 R)

Planet 8 - Ice Giant

Semi-Major Axis: 8.99 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 19.8

Radius: 4.9

Gravity: 0.82 G

Time & Orbit

Eccentricity (e): 0.005

Orbit Range: 8.95 AU - 9.03 AU

Year: 17683 Days

Day: 19.6 Hours

Environment

Temp: -223 °C

Axial Tilt: 0.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 21,510,852 km

• M1: 101,876 km (0.053 R)
• M2: 274,063 km (0.054 R)
• M3: 706,102 km (0.086 R)
• M4: 1,112,559 km (0.085 R)
• M5: 1,517,820 km (0.071 R)
• M6: 2,631,127 km (0.105 R)
• M7: 2,973,706 km (0.095 R)
• M8: 3,147,090 km (0.113 R)
• M9: 4,977,720 km (0.077 R)
• M10: 5,553,073 km (0.059 R)
• M11: 8,100,426 km (0.034 R)
• M12: 9,815,415 km (0.06 R)
• M13: 13,048,824 km (0.03 R)
• M14: 19,698,300 km (0.096 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: 309 - 15,925 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit