🌌 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: 4.26

Radius: 1.79

Gravity: 1.33 G

Time & Orbit

Eccentricity (e): 0.144

Orbit Range: 0.44 AU - 0.58 AU

Year: 235 Days

Day: 23.9 Hours

Environment

Temp: -120 °C

Axial Tilt: 18.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.52 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.21

Radius: 1.59

Gravity: 1.27 G

Time & Orbit

Eccentricity (e): 0.202

Orbit Range: 0.41 AU - 0.63 AU

Year: 242 Days

Day: 40.5 Hours

Environment

Temp: -110 °C

Axial Tilt: 24.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 27,968,675 km

• M1: 97,987 km (0.058 R)

Planet 3 - Terrestrial

Semi-Major Axis: 0.6 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.73

Radius: 1.49

Gravity: 1.23 G

Time & Orbit

Eccentricity (e): 0.223

Orbit Range: 0.47 AU - 0.73 AU

Year: 300 Days

Day: 32.6 Hours

Environment

Temp: -132 °C

Axial Tilt: 11.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 4 - Gas Giant

Semi-Major Axis: 0.75 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 270.8

Radius: 10.7

Gravity: 2.37 G

Time & Orbit

Eccentricity (e): 0.111

Orbit Range: 0.67 AU - 0.83 AU

Year: 419 Days

Day: 7.5 Hours

Environment

Temp: -136 °C

Axial Tilt: 1.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 27,968,675 km

• M1: 133,441 km (0.118 R)
• M2: 533,466 km (0.052 R)
• M3: 898,784 km (0.057 R)
• M4: 1,739,823 km (0.051 R)
• M5: 2,434,406 km (0.095 R)
• M6: 2,776,836 km (0.109 R)
• M7: 3,192,119 km (0.099 R)
• M8: 3,571,350 km (0.117 R)
• M9: 4,124,264 km (0.093 R)

Planet 5 - Gas Giant

Semi-Major Axis: 0.81 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 488.6

Radius: 11

Gravity: 4.04 G

Time & Orbit

Eccentricity (e): 0.066

Orbit Range: 0.76 AU - 0.86 AU

Year: 471 Days

Day: 6.2 Hours

Environment

Temp: -155 °C

Axial Tilt: 4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 27,968,675 km

• M1: 136,882 km (0.108 R)
• M2: 673,938 km (0.11 R)
• M3: 1,028,186 km (0.12 R)
• M4: 1,434,793 km (0.085 R)
• M5: 1,782,159 km (0.047 R)
• M6: 2,527,606 km (0.04 R)
• M7: 3,330,497 km (0.027 R)
• M8: 3,760,442 km (0.098 R)
• M9: 4,336,543 km (0.027 R)
• M10: 4,865,671 km (0.104 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.61 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 704.9

Radius: 13

Gravity: 4.17 G

Time & Orbit

Eccentricity (e): 0.25

Orbit Range: 1.21 AU - 2.01 AU

Year: 1319 Days

Day: 6.5 Hours

Environment

Temp: -183 °C

Axial Tilt: 3.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 27,968,675 km

• M1: 161,715 km (0.039 R)
• M2: 567,275 km (0.094 R)
• M3: 1,052,720 km (0.115 R)
• M4: 1,539,212 km (0.101 R)
• M5: 2,099,905 km (0.067 R)
• M6: 3,212,764 km (0.072 R)
• M7: 4,070,857 km (0.105 R)
• M8: 4,859,088 km (0.077 R)
• M9: 6,103,593 km (0.115 R)
• M10: 6,666,979 km (0.049 R)
• M11: 7,086,750 km (0.119 R)
• M12: 7,683,047 km (0.103 R)
• M13: 11,147,136 km (0.118 R)
• M14: 12,281,387 km (0.118 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.5 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 701.8

Radius: 11.6

Gravity: 5.22 G

Time & Orbit

Eccentricity (e): 0.198

Orbit Range: 2.81 AU - 4.19 AU

Year: 4228 Days

Day: 5.8 Hours

Environment

Temp: -216 °C

Axial Tilt: 27.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 27,968,675 km

• M1: 147,204 km (0.099 R)
• M2: 567,275 km (0.051 R)
• M3: 3,101,313 km (0.119 R)
• M4: 4,575,600 km (0.086 R)
• M5: 8,770,923 km (0.116 R)
• M6: 10,124,335 km (0.073 R)
• M7: 10,547,847 km (0.069 R)
• M8: 11,205,180 km (0.082 R)
• M9: 12,505,185 km (0.108 R)
• M10: 15,127,636 km (0.115 R)
• M11: 15,737,995 km (0.099 R)
• M12: 18,035,220 km (0.038 R)
• M13: 18,911,864 km (0.088 R)
• M14: 23,726,671 km (0.115 R)
• M15: 24,324,315 km (0.11 R)
• M16: 26,815,718 km (0.098 R)

Planet 8 - Ice Giant

Semi-Major Axis: 6.97 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 96.4

Radius: 3.3

Gravity: 8.85 G

Time & Orbit

Eccentricity (e): 0.219

Orbit Range: 5.44 AU - 8.5 AU

Year: 11881 Days

Day: 15.5 Hours

Environment

Temp: -226 °C

Axial Tilt: 42.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 27,968,675 km

• M1: 41,738 km (0.088 R)
• M2: 318,643 km (0.038 R)
• M3: 621,878 km (0.108 R)
• M4: 2,066,096 km (0.119 R)
• M5: 2,169,768 km (0.076 R)
• M6: 2,585,949 km (0.075 R)
• M7: 3,428,334 km (0.083 R)
• M8: 4,919,376 km (0.074 R)
• M9: 5,490,092 km (0.088 R)
• M10: 5,603,637 km (0.038 R)
• M11: 6,697,048 km (0.082 R)
• M12: 7,191,918 km (0.09 R)
• M13: 13,499,113 km (0.118 R)
• M14: 13,862,786 km (0.07 R)
• M15: 14,393,709 km (0.12 R)
• M16: 17,313,410 km (0.088 R)
• M17: 17,742,756 km (0.112 R)
• M18: 19,137,906 km (0.086 R)
• M19: 23,909,928 km (0.109 R)
• M20: 24,904,306 km (0.1 R)
• M21: 26,975,338 km (0.08 R)
• M22: 27,968,668 km (0.115 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: 486 - 20,197 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit