🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.31 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.61 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.12

Radius: 1.58

Gravity: 1.25 G

Time & Orbit

Eccentricity (e): 0.238

Orbit Range: 0.46 AU - 0.76 AU

Year: 313 Days

Day: 30.8 Hours

Environment

Temp: -123 °C

Axial Tilt: 8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 38,746,599 km

• M1: 77,043 km (0.061 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.8 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 177.6

Radius: 11

Gravity: 1.47 G

Time & Orbit

Eccentricity (e): 0.161

Orbit Range: 0.67 AU - 0.93 AU

Year: 469 Days

Day: 10.5 Hours

Environment

Temp: -143 °C

Axial Tilt: 36.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 38,746,599 km

• M1: 136,882 km (0.043 R)
• M2: 484,398 km (0.078 R)
• M3: 1,069,924 km (0.03 R)
• M4: 1,517,072 km (0.104 R)
• M5: 2,110,527 km (0.07 R)
• M6: 3,255,848 km (0.091 R)
• M7: 3,806,967 km (0.106 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.89 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 448.4

Radius: 10.8

Gravity: 3.84 G

Time & Orbit

Eccentricity (e): 0.121

Orbit Range: 0.78 AU - 1 AU

Year: 551 Days

Day: 12.7 Hours

Environment

Temp: -160 °C

Axial Tilt: 23.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 38,746,599 km

• M1: 134,339 km (0.111 R)
• M2: 489,185 km (0.071 R)
• M3: 1,231,041 km (0.043 R)
• M4: 1,700,329 km (0.081 R)
• M5: 2,146,131 km (0.106 R)
• M6: 3,429,980 km (0.095 R)
• M7: 4,385,761 km (0.074 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.07 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 367.7

Radius: 8

Gravity: 5.75 G

Time & Orbit

Eccentricity (e): 0.127

Orbit Range: 1.81 AU - 2.33 AU

Year: 1954 Days

Day: 6.3 Hours

Environment

Temp: -195 °C

Axial Tilt: 9.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 38,746,599 km

• M1: 99,632 km (0.116 R)
• M2: 367,263 km (0.032 R)
• M3: 1,120,039 km (0.103 R)
• M4: 1,877,453 km (0.041 R)
• M5: 3,543,824 km (0.119 R)
• M6: 5,791,083 km (0.114 R)
• M7: 6,111,821 km (0.095 R)
• M8: 6,372,121 km (0.073 R)
• M9: 6,639,901 km (0.101 R)
• M10: 7,596,281 km (0.082 R)
• M11: 8,121,668 km (0.084 R)
• M12: 8,407,849 km (0.059 R)
• M13: 8,970,038 km (0.115 R)
• M14: 12,960,711 km (0.109 R)

Planet 5 - Gas Giant

Semi-Major Axis: 5.11 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 630.1

Radius: 10.5

Gravity: 5.72 G

Time & Orbit

Eccentricity (e): 0.073

Orbit Range: 4.74 AU - 5.48 AU

Year: 7578 Days

Day: 8.2 Hours

Environment

Temp: -207 °C

Axial Tilt: 15.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 38,746,599 km

• M1: 130,599 km (0.098 R)
• M2: 684,709 km (0.072 R)
• M3: 1,173,147 km (0.075 R)
• M4: 2,351,529 km (0.072 R)
• M5: 2,811,542 km (0.067 R)
• M6: 3,720,349 km (0.116 R)
• M7: 4,269,074 km (0.12 R)
• M8: 4,673,737 km (0.058 R)
• M9: 5,045,039 km (0.042 R)
• M10: 7,244,426 km (0.094 R)
• M11: 7,981,046 km (0.089 R)
• M12: 8,471,578 km (0.109 R)
• M13: 9,740,467 km (0.064 R)
• M14: 10,540,965 km (0.105 R)
• M15: 12,816,349 km (0.083 R)
• M16: 13,951,647 km (0.107 R)
• M17: 14,907,278 km (0.061 R)
• M18: 17,015,262 km (0.076 R)
• M19: 17,486,794 km (0.099 R)
• M20: 18,036,267 km (0.075 R)
• M21: 19,680,348 km (0.088 R)
• M22: 20,805,174 km (0.079 R)
• M23: 36,475,701 km (0.068 R)

Kuiper Belt

Range: 30 - 59 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 537 - 10,695 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit