🌌 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: 0.52 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.05

Radius: 1.33

Gravity: 1.16 G

Time & Orbit

Eccentricity (e): 0.069

Orbit Range: 0.48 AU - 0.56 AU

Year: 246 Days

Day: 21.3 Hours

Environment

Temp: -109 °C

Axial Tilt: 25.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.92 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 70.6

Radius: 13.9

Gravity: 0.37 G

Time & Orbit

Eccentricity (e): 0.037

Orbit Range: 0.89 AU - 0.95 AU

Year: 579 Days

Day: 13.9 Hours

Environment

Temp: -163 °C

Axial Tilt: 6.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (3)

Outer Limit: 15,885,426 km

• M1: 174,581 km (0.103 R)
• M2: 623,973 km (0.067 R)
• M3: 2,848,044 km (0.067 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.02 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 26.8

Radius: 9.2

Gravity: 0.32 G

Time & Orbit

Eccentricity (e): 0.023

Orbit Range: 1 AU - 1.04 AU

Year: 676 Days

Day: 12.8 Hours

Environment

Temp: -158 °C

Axial Tilt: 12.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (4)

Outer Limit: 15,885,426 km

• M1: 114,442 km (0.079 R)
• M2: 585,676 km (0.119 R)
• M3: 1,079,349 km (0.07 R)
• M4: 2,430,517 km (0.104 R)

Asteroid Belt

Center: 1.37 AU

Composition

Type: Outer System (Icy)

A dense region of planetesimals and debris.

Boundary

Planet 4 - Gas Giant

Semi-Major Axis: 1.72 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 210.2

Radius: 14

Gravity: 1.07 G

Time & Orbit

Eccentricity (e): 0.084

Orbit Range: 1.58 AU - 1.86 AU

Year: 1480 Days

Day: 6.5 Hours

Environment

Temp: -187 °C

Axial Tilt: 25.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 15,885,426 km

• M1: 174,132 km (0.105 R)
• M2: 657,034 km (0.047 R)
• M3: 1,167,462 km (0.116 R)
• M4: 2,565,603 km (0.097 R)
• M5: 3,754,308 km (0.098 R)
• M6: 4,531,320 km (0.073 R)
• M7: 5,065,384 km (0.111 R)
• M8: 5,836,262 km (0.12 R)
• M9: 7,195,059 km (0.092 R)
• M10: 7,973,716 km (0.115 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.96 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 928.4

Radius: 10.6

Gravity: 8.26 G

Time & Orbit

Eccentricity (e): 0.089

Orbit Range: 1.79 AU - 2.13 AU

Year: 1800 Days

Day: 13 Hours

Environment

Temp: -187 °C

Axial Tilt: 12.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 15,885,426 km

• M1: 132,245 km (0.076 R)
• M2: 476,918 km (0.05 R)
• M3: 869,912 km (0.106 R)
• M4: 1,229,994 km (0.119 R)
• M5: 1,600,548 km (0.117 R)
• M6: 1,952,851 km (0.092 R)
• M7: 2,477,640 km (0.115 R)
• M8: 3,158,161 km (0.07 R)
• M9: 4,634,392 km (0.075 R)
• M10: 5,477,975 km (0.041 R)
• M11: 6,188,266 km (0.119 R)
• M12: 7,324,611 km (0.081 R)
• M13: 7,882,162 km (0.086 R)
• M14: 8,819,991 km (0.098 R)
• M15: 9,383,526 km (0.058 R)
• M16: 10,804,557 km (0.081 R)
• M17: 14,157,793 km (0.11 R)
• M18: 16,265,328 km (0.057 R)
• M19: 16,660,864 km (0.046 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.55 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 231.2

Radius: 9.9

Gravity: 2.36 G

Time & Orbit

Eccentricity (e): 0.072

Orbit Range: 2.37 AU - 2.73 AU

Year: 2671 Days

Day: 13.6 Hours

Environment

Temp: -197 °C

Axial Tilt: 26.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 15,885,426 km

• M1: 123,119 km (0.099 R)
• M2: 457,769 km (0.11 R)
• M3: 1,787,096 km (0.091 R)
• M4: 2,637,261 km (0.113 R)
• M5: 2,969,518 km (0.108 R)
• M6: 3,652,582 km (0.069 R)
• M7: 4,591,009 km (0.079 R)
• M8: 5,137,939 km (0.06 R)
• M9: 5,796,020 km (0.053 R)
• M10: 6,386,483 km (0.086 R)
• M11: 6,734,298 km (0.073 R)
• M12: 10,224,865 km (0.087 R)
• M13: 13,760,311 km (0.12 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 578.2

Radius: 11.8

Gravity: 4.15 G

Time & Orbit

Eccentricity (e): 0.198

Orbit Range: 2.41 AU - 3.59 AU

Year: 3409 Days

Day: 9.5 Hours

Environment

Temp: -203 °C

Axial Tilt: 14.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 15,885,426 km

• M1: 161,715 km (0.077 R)
• M2: 608,415 km (0.096 R)
• M3: 1,429,408 km (0.104 R)
• M4: 1,796,970 km (0.059 R)
• M5: 2,284,060 km (0.097 R)
• M6: 3,181,049 km (0.047 R)
• M7: 4,149,396 km (0.1 R)
• M8: 5,229,493 km (0.11 R)
• M9: 5,876,055 km (0.082 R)
• M10: 6,604,148 km (0.085 R)
• M11: 7,678,410 km (0.079 R)
• M12: 8,274,557 km (0.103 R)
• M13: 10,567,145 km (0.116 R)
• M14: 11,516,343 km (0.119 R)
• M15: 11,902,904 km (0.097 R)
• M16: 13,395,293 km (0.096 R)
• M17: 14,806,599 km (0.114 R)
• M18: 15,678,904 km (0.087 R)
• M19: 19,695,607 km (0.069 R)
• M20: 20,813,701 km (0.101 R)
• M21: 21,582,186 km (0.105 R)

Planet 8 - Gas Giant

Semi-Major Axis: 5.39 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 37

Radius: 11.1

Gravity: 0.3 G

Time & Orbit

Eccentricity (e): 0.046

Orbit Range: 5.14 AU - 5.64 AU

Year: 8209 Days

Day: 10.6 Hours

Environment

Temp: -227 °C

Axial Tilt: 9.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 15,885,426 km

• M1: 140,772 km (0.058 R)
• M2: 698,772 km (0.099 R)
• M3: 1,296,415 km (0.041 R)
• M4: 4,094,344 km (0.088 R)
• M5: 5,632,509 km (0.037 R)
• M6: 6,163,881 km (0.026 R)
• M7: 7,468,225 km (0.067 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: 331 - 16,228 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit