🌌 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: 3.43

Radius: 1.64

Gravity: 1.28 G

Time & Orbit

Eccentricity (e): 0.181

Orbit Range: 0.53 AU - 0.77 AU

Year: 338 Days

Day: 47.8 Hours

Environment

Temp: -140 °C

Axial Tilt: 7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.65 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.37

Radius: 1.8

Gravity: 1.35 G

Time & Orbit

Eccentricity (e): 0.135

Orbit Range: 0.56 AU - 0.74 AU

Year: 338 Days

Day: 15.6 Hours

Environment

Temp: -140 °C

Axial Tilt: 29.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.68 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 426.7

Radius: 12

Gravity: 2.96 G

Time & Orbit

Eccentricity (e): 0.173

Orbit Range: 0.56 AU - 0.8 AU

Year: 362 Days

Day: 9.1 Hours

Environment

Temp: -141 °C

Axial Tilt: 38.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 45,241,900 km

• M1: 149,299 km (0.09 R)
• M2: 525,687 km (0.101 R)
• M3: 951,293 km (0.098 R)
• M4: 1,360,742 km (0.113 R)
• M5: 2,042,909 km (0.036 R)
• M6: 2,450,862 km (0.087 R)
• M7: 2,884,845 km (0.118 R)
• M8: 3,359,370 km (0.082 R)
• M9: 3,780,937 km (0.054 R)
• M10: 4,467,142 km (0.111 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.9 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 579

Radius: 13.3

Gravity: 3.27 G

Time & Orbit

Eccentricity (e): 0.03

Orbit Range: 0.87 AU - 0.93 AU

Year: 551 Days

Day: 5.1 Hours

Environment

Temp: -153 °C

Axial Tilt: 42.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 45,241,900 km

• M1: 165,455 km (0.108 R)
• M2: 581,188 km (0.079 R)
• M3: 1,004,400 km (0.12 R)
• M4: 1,575,415 km (0.094 R)
• M5: 2,553,935 km (0.119 R)
• M6: 3,098,322 km (0.113 R)
• M7: 4,511,573 km (0.102 R)
• M8: 5,809,484 km (0.115 R)
• M9: 6,545,505 km (0.076 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.91 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 494.8

Radius: 14.8

Gravity: 2.26 G

Time & Orbit

Eccentricity (e): 0.032

Orbit Range: 1.85 AU - 1.97 AU

Year: 1704 Days

Day: 11.8 Hours

Environment

Temp: -191 °C

Axial Tilt: 45.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 45,241,900 km

• M1: 184,155 km (0.095 R)
• M2: 674,238 km (0.113 R)
• M3: 1,136,196 km (0.1 R)
• M4: 1,944,024 km (0.034 R)
• M5: 3,459,451 km (0.114 R)
• M6: 3,949,085 km (0.105 R)
• M7: 5,255,523 km (0.116 R)
• M8: 6,934,161 km (0.057 R)
• M9: 7,828,457 km (0.091 R)
• M10: 8,828,070 km (0.049 R)
• M11: 9,467,750 km (0.115 R)
• M12: 10,908,826 km (0.115 R)
• M13: 11,935,666 km (0.077 R)
• M14: 12,416,623 km (0.117 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.15 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 165.2

Radius: 10.8

Gravity: 1.42 G

Time & Orbit

Eccentricity (e): 0.133

Orbit Range: 1.86 AU - 2.44 AU

Year: 2036 Days

Day: 9.7 Hours

Environment

Temp: -196 °C

Axial Tilt: 2.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 45,241,900 km

• M1: 137,181 km (0.083 R)
• M2: 625,768 km (0.116 R)
• M3: 1,219,522 km (0.094 R)
• M4: 2,143,139 km (0.082 R)
• M5: 2,493,049 km (0.118 R)
• M6: 2,894,120 km (0.109 R)
• M7: 3,324,214 km (0.097 R)
• M8: 3,874,585 km (0.109 R)
• M9: 4,246,784 km (0.093 R)
• M10: 5,101,287 km (0.06 R)
• M11: 5,469,747 km (0.055 R)
• M12: 5,981,820 km (0.049 R)
• M13: 6,844,402 km (0.113 R)
• M14: 7,415,118 km (0.079 R)
• M15: 8,277,849 km (0.12 R)
• M16: 9,695,588 km (0.111 R)

Planet 7 - Gas Giant

Semi-Major Axis: 5.87 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 528.3

Radius: 13.8

Gravity: 2.77 G

Time & Orbit

Eccentricity (e): 0.175

Orbit Range: 4.84 AU - 6.9 AU

Year: 9183 Days

Day: 8 Hours

Environment

Temp: -210 °C

Axial Tilt: 45.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 45,241,900 km

• M1: 175,329 km (0.1 R)
• M2: 857,345 km (0.113 R)
• M3: 2,587,295 km (0.057 R)
• M4: 4,631,999 km (0.109 R)
• M5: 5,722,418 km (0.071 R)
• M6: 6,190,360 km (0.076 R)
• M7: 7,630,838 km (0.032 R)
• M8: 8,199,160 km (0.056 R)
• M9: 12,947,397 km (0.095 R)
• M10: 13,995,330 km (0.106 R)
• M11: 15,607,995 km (0.041 R)
• M12: 16,459,207 km (0.102 R)
• M13: 25,749,533 km (0.089 R)
• M14: 27,593,477 km (0.111 R)
• M15: 31,029,740 km (0.083 R)
• M16: 41,157,366 km (0.037 R)

Planet 8 - Ice Giant

Semi-Major Axis: 9.26 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 174

Radius: 6.2

Gravity: 4.53 G

Time & Orbit

Eccentricity (e): 0.001

Orbit Range: 9.25 AU - 9.27 AU

Year: 18194 Days

Day: 20.3 Hours

Environment

Temp: -228 °C

Axial Tilt: 32.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 45,241,900 km

• M1: 77,043 km (0.113 R)
• M2: 291,267 km (0.115 R)
• M3: 709,244 km (0.075 R)
• M4: 1,089,970 km (0.087 R)
• M5: 1,883,736 km (0.072 R)
• M6: 4,444,702 km (0.096 R)
• M7: 4,826,327 km (0.066 R)
• M8: 5,358,297 km (0.084 R)
• M9: 5,756,676 km (0.096 R)
• M10: 7,308,155 km (0.046 R)
• M11: 7,632,483 km (0.12 R)
• M12: 10,029,041 km (0.084 R)
• M13: 10,480,677 km (0.085 R)
• M14: 12,595,393 km (0.076 R)
• M15: 14,530,441 km (0.047 R)
• M16: 15,370,284 km (0.116 R)
• M17: 17,431,293 km (0.031 R)
• M18: 21,427,801 km (0.062 R)
• M19: 21,924,914 km (0.087 R)
• M20: 24,979,553 km (0.082 R)
• M21: 27,911,971 km (0.03 R)
• M22: 31,702,781 km (0.12 R)

Kuiper Belt

Range: 30 - 55 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 550 - 16,819 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit