🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.3 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.59 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.61

Radius: 1.84

Gravity: 1.36 G

Time & Orbit

Eccentricity (e): 0.029

Orbit Range: 0.57 AU - 0.61 AU

Year: 297 Days

Day: 47.9 Hours

Environment

Temp: -126 °C

Axial Tilt: 26.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.94 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 748.2

Radius: 14.3

Gravity: 3.66 G

Time & Orbit

Eccentricity (e): 0.206

Orbit Range: 0.75 AU - 1.13 AU

Year: 598 Days

Day: 14.3 Hours

Environment

Temp: -152 °C

Axial Tilt: 49.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 81,446,410 km

• M1: 177,872 km (0.105 R)
• M2: 642,523 km (0.038 R)
• M3: 1,364,333 km (0.082 R)
• M4: 1,917,246 km (0.037 R)
• M5: 2,404,337 km (0.104 R)
• M6: 3,068,402 km (0.108 R)
• M7: 3,634,929 km (0.109 R)
• M8: 4,109,005 km (0.092 R)
• M9: 4,561,538 km (0.078 R)
• M10: 5,268,987 km (0.072 R)
• M11: 6,883,297 km (0.103 R)
• M12: 7,372,183 km (0.035 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.21 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 811.7

Radius: 11.7

Gravity: 5.93 G

Time & Orbit

Eccentricity (e): 0.135

Orbit Range: 1.05 AU - 1.37 AU

Year: 873 Days

Day: 14.3 Hours

Environment

Temp: -177 °C

Axial Tilt: 33.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 81,446,410 km

• M1: 145,559 km (0.101 R)
• M2: 574,605 km (0.081 R)
• M3: 955,182 km (0.111 R)
• M4: 1,375,253 km (0.088 R)
• M5: 1,836,314 km (0.118 R)
• M6: 2,345,695 km (0.083 R)
• M7: 3,925,448 km (0.085 R)
• M8: 4,312,308 km (0.106 R)
• M9: 4,959,020 km (0.068 R)
• M10: 5,997,079 km (0.03 R)
• M11: 6,918,303 km (0.097 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.32 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 569.9

Radius: 12.8

Gravity: 3.48 G

Time & Orbit

Eccentricity (e): 0.014

Orbit Range: 1.3 AU - 1.34 AU

Year: 995 Days

Day: 7.4 Hours

Environment

Temp: -171 °C

Axial Tilt: 23.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 81,446,410 km

• M1: 159,172 km (0.053 R)
• M2: 599,738 km (0.059 R)
• M3: 1,743,114 km (0.092 R)
• M4: 2,666,582 km (0.118 R)
• M5: 3,523,628 km (0.094 R)
• M6: 3,939,361 km (0.087 R)
• M7: 6,515,137 km (0.114 R)
• M8: 7,916,121 km (0.106 R)
• M9: 9,285,091 km (0.055 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.36 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 142

Radius: 12.8

Gravity: 0.87 G

Time & Orbit

Eccentricity (e): 0.119

Orbit Range: 2.08 AU - 2.64 AU

Year: 2378 Days

Day: 12.5 Hours

Environment

Temp: -186 °C

Axial Tilt: 39.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 81,446,410 km

• M1: 159,172 km (0.109 R)
• M2: 584,628 km (0.109 R)
• M3: 1,012,329 km (0.046 R)
• M4: 1,565,991 km (0.113 R)
• M5: 2,766,364 km (0.092 R)
• M6: 3,230,117 km (0.106 R)
• M7: 4,385,162 km (0.051 R)
• M8: 5,530,484 km (0.103 R)
• M9: 7,421,999 km (0.11 R)
• M10: 8,272,164 km (0.082 R)
• M11: 9,272,375 km (0.037 R)

Planet 6 - Ice Giant

Semi-Major Axis: 8.99 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 46.9

Radius: 4.6

Gravity: 2.22 G

Time & Orbit

Eccentricity (e): 0.045

Orbit Range: 8.59 AU - 9.39 AU

Year: 17683 Days

Day: 18 Hours

Environment

Temp: -218 °C

Axial Tilt: 12.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 81,446,410 km

• M1: 75,996 km (0.046 R)
• M2: 2,824,557 km (0.042 R)
• M3: 3,321,970 km (0.095 R)
• M4: 4,563,333 km (0.113 R)
• M5: 5,845,387 km (0.117 R)
• M6: 19,426,331 km (0.113 R)
• M7: 20,711,227 km (0.082 R)
• M8: 26,014,023 km (0.087 R)

Planet 7 - Ice Giant

Semi-Major Axis: 9.74 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 59

Radius: 3.7

Gravity: 4.31 G

Time & Orbit

Eccentricity (e): 0.207

Orbit Range: 7.72 AU - 11.76 AU

Year: 19941 Days

Day: 18.7 Hours

Environment

Temp: -231 °C

Axial Tilt: 35.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 81,446,410 km

• M1: 46,375 km (0.09 R)
• M2: 720,015 km (0.111 R)
• M3: 1,072,916 km (0.067 R)
• M4: 1,770,042 km (0.096 R)
• M5: 2,918,355 km (0.112 R)
• M6: 3,097,873 km (0.12 R)
• M7: 3,435,066 km (0.069 R)
• M8: 4,410,594 km (0.106 R)
• M9: 5,348,872 km (0.116 R)
• M10: 6,513,042 km (0.081 R)
• M11: 6,959,293 km (0.054 R)
• M12: 7,573,243 km (0.093 R)
• M13: 8,866,516 km (0.058 R)
• M14: 9,074,607 km (0.093 R)
• M15: 9,630,662 km (0.084 R)
• M16: 11,337,424 km (0.116 R)
• M17: 17,778,510 km (0.085 R)
• M18: 20,468,579 km (0.083 R)
• M19: 26,295,117 km (0.073 R)
• M20: 26,638,294 km (0.039 R)
• M21: 27,421,290 km (0.064 R)
• M22: 27,862,753 km (0.083 R)
• M23: 32,443,589 km (0.08 R)

Planet 8 - Ice Giant

Semi-Major Axis: 9.84 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 819.6

Radius: 7.5

Gravity: 14.57 G

Time & Orbit

Eccentricity (e): 0.059

Orbit Range: 9.26 AU - 10.42 AU

Year: 20249 Days

Day: 19.3 Hours

Environment

Temp: -224 °C

Axial Tilt: 33.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (31)

Outer Limit: 81,446,410 km

• M1: 105,317 km (0.097 R)
• M2: 868,416 km (0.116 R)
• M3: 1,109,119 km (0.042 R)
• M4: 1,730,399 km (0.055 R)
• M5: 2,378,905 km (0.117 R)
• M6: 2,990,312 km (0.03 R)
• M7: 3,888,946 km (0.068 R)
• M8: 4,735,820 km (0.048 R)
• M9: 5,618,597 km (0.095 R)
• M10: 6,882,400 km (0.119 R)
• M11: 14,151,809 km (0.032 R)
• M12: 14,688,566 km (0.114 R)
• M13: 15,721,240 km (0.085 R)
• M14: 16,632,142 km (0.089 R)
• M15: 18,832,726 km (0.114 R)
• M16: 19,481,981 km (0.069 R)
• M17: 20,727,383 km (0.027 R)
• M18: 22,127,021 km (0.042 R)
• M19: 24,561,278 km (0.04 R)
• M20: 24,891,440 km (0.094 R)
• M21: 28,965,140 km (0.073 R)
• M22: 34,827,581 km (0.085 R)
• M23: 35,524,109 km (0.1 R)
• M24: 43,008,191 km (0.067 R)
• M25: 47,625,978 km (0.032 R)
• M26: 50,762,896 km (0.099 R)
• M27: 52,381,844 km (0.069 R)
• M28: 52,746,264 km (0.084 R)
• M29: 58,808,569 km (0.113 R)
• M30: 75,728,387 km (0.12 R)
• M31: 80,716,429 km (0.073 R)

Kuiper Belt

Range: 30 - 51 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 314 - 15,479 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit