🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.49 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.97 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.66

Radius: 1.85

Gravity: 1.36 G

Time & Orbit

Eccentricity (e): 0.059

Orbit Range: 0.91 AU - 1.03 AU

Year: 362 Days

Day: 28.3 Hours

Environment

Temp: 4 °C

Axial Tilt: 123.5 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Satellites (1)

Outer Limit: 74,506,750 km

• M1: 353,949 km (0.035 R)

Planet 2 - Terrestrial

Semi-Major Axis: 1.24 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.1

Radius: 1.57

Gravity: 1.26 G

Time & Orbit

Eccentricity (e): 0.141

Orbit Range: 1.07 AU - 1.41 AU

Year: 523 Days

Day: 25.3 Hours

Environment

Temp: -27 °C

Axial Tilt: 36.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Terrestrial

Semi-Major Axis: 1.27 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.51

Radius: 0.76

Gravity: 0.88 G

Time & Orbit

Eccentricity (e): 0.072

Orbit Range: 1.18 AU - 1.36 AU

Year: 542 Days

Day: 23.3 Hours

Environment

Temp: -28 °C

Axial Tilt: 27.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 74,506,750 km

• M1: 26,329 km (0.108 R)
• M2: 395,537 km (0.084 R)

Planet 4 - Terrestrial

Semi-Major Axis: 1.92 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.27

Radius: 1.39

Gravity: 1.17 G

Time & Orbit

Eccentricity (e): 0.146

Orbit Range: 1.64 AU - 2.2 AU

Year: 1008 Days

Day: 36.8 Hours

Environment

Temp: -75 °C

Axial Tilt: 13.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 74,506,750 km

• M1: 479,910 km (0.105 R)

Planet 5 - Gas Giant

Semi-Major Axis: 4.49 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 544.9

Radius: 9.5

Gravity: 6.04 G

Time & Orbit

Eccentricity (e): 0.238

Orbit Range: 3.42 AU - 5.56 AU

Year: 3603 Days

Day: 13.9 Hours

Environment

Temp: -147 °C

Axial Tilt: 11.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 74,506,750 km

• M1: 118,482 km (0.093 R)
• M2: 1,036,863 km (0.107 R)
• M3: 1,959,583 km (0.096 R)
• M4: 3,068,402 km (0.077 R)
• M5: 3,373,881 km (0.094 R)
• M6: 6,318,864 km (0.025 R)
• M7: 7,308,903 km (0.102 R)
• M8: 8,468,287 km (0.115 R)
• M9: 13,142,622 km (0.12 R)
• M10: 14,199,381 km (0.108 R)
• M11: 22,289,185 km (0.09 R)

Planet 6 - Gas Giant

Semi-Major Axis: 5.57 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 186.3

Radius: 12.7

Gravity: 1.16 G

Time & Orbit

Eccentricity (e): 0.048

Orbit Range: 5.3 AU - 5.84 AU

Year: 4979 Days

Day: 10.5 Hours

Environment

Temp: -153 °C

Axial Tilt: 10.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 74,506,750 km

• M1: 158,873 km (0.046 R)
• M2: 717,771 km (0.096 R)
• M3: 1,653,954 km (0.082 R)
• M4: 2,053,829 km (0.038 R)
• M5: 2,635,316 km (0.104 R)
• M6: 3,273,201 km (0.1 R)
• M7: 4,593,552 km (0.109 R)
• M8: 5,230,690 km (0.119 R)
• M9: 6,852,330 km (0.117 R)
• M10: 14,311,729 km (0.032 R)
• M11: 17,655,541 km (0.074 R)

Planet 7 - Gas Giant

Semi-Major Axis: 7.8 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 325.9

Radius: 8.1

Gravity: 4.97 G

Time & Orbit

Eccentricity (e): 0.19

Orbit Range: 6.32 AU - 9.28 AU

Year: 8251 Days

Day: 9.4 Hours

Environment

Temp: -174 °C

Axial Tilt: 32.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 74,506,750 km

• M1: 101,427 km (0.069 R)
• M2: 901,028 km (0.074 R)
• M3: 1,165,966 km (0.093 R)
• M4: 1,845,140 km (0.11 R)
• M5: 5,354,706 km (0.118 R)
• M6: 5,802,303 km (0.093 R)
• M7: 6,704,378 km (0.071 R)
• M8: 9,751,388 km (0.105 R)
• M9: 10,834,476 km (0.047 R)
• M10: 11,648,737 km (0.116 R)
• M11: 13,452,738 km (0.047 R)
• M12: 13,890,013 km (0.096 R)
• M13: 14,792,686 km (0.062 R)
• M14: 15,435,508 km (0.063 R)
• M15: 16,777,102 km (0.101 R)
• M16: 19,274,788 km (0.118 R)
• M17: 22,693,847 km (0.106 R)
• M18: 23,079,810 km (0.11 R)
• M19: 23,391,721 km (0.057 R)
• M20: 26,497,074 km (0.085 R)
• M21: 27,794,985 km (0.119 R)
• M22: 32,233,105 km (0.117 R)

Planet 8 - Ice Giant

Semi-Major Axis: 18.01 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 307

Radius: 7.4

Gravity: 5.61 G

Time & Orbit

Eccentricity (e): 0.151

Orbit Range: 15.29 AU - 20.73 AU

Year: 28948 Days

Day: 24.9 Hours

Environment

Temp: -198 °C

Axial Tilt: 37.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 74,506,750 km

• M1: 92,451 km (0.074 R)
• M2: 385,514 km (0.12 R)
• M3: 742,604 km (0.119 R)
• M4: 1,673,701 km (0.056 R)
• M5: 2,965,479 km (0.066 R)
• M6: 4,272,814 km (0.045 R)
• M7: 4,890,354 km (0.101 R)
• M8: 5,644,776 km (0.103 R)
• M9: 6,430,913 km (0.102 R)
• M10: 8,270,369 km (0.058 R)
• M11: 9,172,444 km (0.11 R)
• M12: 10,860,057 km (0.081 R)
• M13: 11,680,003 km (0.079 R)
• M14: 12,405,403 km (0.1 R)
• M15: 19,326,399 km (0.054 R)
• M16: 33,276,850 km (0.051 R)
• M17: 36,364,998 km (0.077 R)
• M18: 39,056,114 km (0.118 R)
• M19: 53,084,356 km (0.116 R)
• M20: 56,353,817 km (0.104 R)
• M21: 64,906,028 km (0.075 R)
• M22: 65,314,131 km (0.1 R)

Kuiper Belt

Range: 30 - 53 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 185 - 12,393 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit