🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.27 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Gas Giant

Semi-Major Axis: 0.53 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 78

Radius: 14.5

Gravity: 0.37 G

Time & Orbit

Eccentricity (e): 0.005

Orbit Range: 0.53 AU - 0.53 AU

Year: 266 Days

Day: 13.5 Hours

Environment

Temp: -141 °C

Axial Tilt: 31.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (4)

Outer Limit: 21,229,774 km

• M1: 180,714 km (0.107 R)
• M2: 809,923 km (0.089 R)
• M3: 1,338,003 km (0.11 R)
• M4: 1,838,259 km (0.084 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.57 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 104.9

Radius: 8.1

Gravity: 1.6 G

Time & Orbit

Eccentricity (e): 0.152

Orbit Range: 0.48 AU - 0.66 AU

Year: 297 Days

Day: 14.1 Hours

Environment

Temp: -142 °C

Axial Tilt: 15.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 21,229,774 km

• M1: 100,679 km (0.109 R)
• M2: 411,843 km (0.057 R)
• M3: 934,388 km (0.105 R)
• M4: 1,434,943 km (0.052 R)
• M5: 1,860,848 km (0.099 R)
• M6: 2,155,406 km (0.072 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.58 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 605.1

Radius: 8.4

Gravity: 8.58 G

Time & Orbit

Eccentricity (e): 0.054

Orbit Range: 0.55 AU - 0.61 AU

Year: 305 Days

Day: 14.4 Hours

Environment

Temp: -155 °C

Axial Tilt: 47.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 21,229,774 km

• M1: 104,569 km (0.099 R)
• M2: 586,274 km (0.109 R)
• M3: 964,308 km (0.08 R)
• M4: 1,768,247 km (0.053 R)
• M5: 2,176,948 km (0.103 R)
• M6: 2,451,760 km (0.09 R)
• M7: 2,806,456 km (0.093 R)
• M8: 3,279,335 km (0.076 R)
• M9: 3,608,151 km (0.048 R)
• M10: 3,995,460 km (0.094 R)
• M11: 4,488,684 km (0.093 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.62 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 597.1

Radius: 8

Gravity: 9.33 G

Time & Orbit

Eccentricity (e): 0.191

Orbit Range: 0.5 AU - 0.74 AU

Year: 337 Days

Day: 5.9 Hours

Environment

Temp: -156 °C

Axial Tilt: 32.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 21,229,774 km

• M1: 99,483 km (0.111 R)
• M2: 421,866 km (0.062 R)
• M3: 745,895 km (0.102 R)
• M4: 1,109,867 km (0.069 R)
• M5: 1,401,882 km (0.104 R)
• M6: 1,852,620 km (0.11 R)
• M7: 2,566,950 km (0.088 R)
• M8: 3,509,416 km (0.081 R)
• M9: 3,801,431 km (0.04 R)
• M10: 4,186,347 km (0.046 R)
• M11: 4,461,607 km (0.117 R)

Planet 5 - Gas Giant

Semi-Major Axis: 0.99 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 655

Radius: 14

Gravity: 3.34 G

Time & Orbit

Eccentricity (e): 0.067

Orbit Range: 0.92 AU - 1.06 AU

Year: 680 Days

Day: 13.5 Hours

Environment

Temp: -179 °C

Axial Tilt: 34.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 21,229,774 km

• M1: 174,132 km (0.045 R)
• M2: 613,052 km (0.098 R)
• M3: 1,101,489 km (0.12 R)
• M4: 1,745,957 km (0.109 R)
• M5: 2,426,178 km (0.079 R)
• M6: 3,081,417 km (0.093 R)
• M7: 3,952,525 km (0.117 R)
• M8: 5,170,102 km (0.114 R)
• M9: 5,652,107 km (0.07 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.14 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 344.6

Radius: 12.2

Gravity: 2.32 G

Time & Orbit

Eccentricity (e): 0.019

Orbit Range: 1.12 AU - 1.16 AU

Year: 840 Days

Day: 12.3 Hours

Environment

Temp: -191 °C

Axial Tilt: 34.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 21,229,774 km

• M1: 151,692 km (0.088 R)
• M2: 914,342 km (0.034 R)
• M3: 1,484,908 km (0.043 R)
• M4: 3,459,451 km (0.12 R)
• M5: 4,472,378 km (0.119 R)
• M6: 5,031,874 km (0.029 R)

Planet 7 - Gas Giant

Semi-Major Axis: 1.46 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 682.4

Radius: 8.1

Gravity: 10.4 G

Time & Orbit

Eccentricity (e): 0.1

Orbit Range: 1.31 AU - 1.61 AU

Year: 1218 Days

Day: 8.6 Hours

Environment

Temp: -182 °C

Axial Tilt: 44.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 21,229,774 km

• M1: 100,679 km (0.08 R)
• M2: 388,057 km (0.086 R)
• M3: 1,684,173 km (0.11 R)
• M4: 2,352,277 km (0.069 R)
• M5: 2,906,687 km (0.073 R)
• M6: 3,317,782 km (0.114 R)
• M7: 3,914,527 km (0.072 R)
• M8: 4,362,872 km (0.095 R)
• M9: 4,864,175 km (0.097 R)
• M10: 5,423,970 km (0.075 R)
• M11: 7,135,968 km (0.116 R)
• M12: 7,673,623 km (0.099 R)
• M13: 9,033,168 km (0.118 R)
• M14: 9,878,546 km (0.113 R)
• M15: 11,244,075 km (0.094 R)

Planet 8 - Gas Giant

Semi-Major Axis: 2.89 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 517.5

Radius: 12

Gravity: 3.59 G

Time & Orbit

Eccentricity (e): 0.188

Orbit Range: 2.35 AU - 3.43 AU

Year: 3391 Days

Day: 6.3 Hours

Environment

Temp: -205 °C

Axial Tilt: 20.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 21,229,774 km

• M1: 149,448 km (0.035 R)
• M2: 550,520 km (0.118 R)
• M3: 1,225,655 km (0.088 R)
• M4: 1,790,387 km (0.095 R)
• M5: 2,324,003 km (0.093 R)
• M6: 2,737,192 km (0.117 R)
• M7: 3,164,893 km (0.08 R)
• M8: 4,347,913 km (0.109 R)
• M9: 5,779,564 km (0.102 R)
• M10: 6,182,282 km (0.11 R)
• M11: 7,104,552 km (0.055 R)
• M12: 8,519,599 km (0.1 R)
• M13: 10,268,847 km (0.115 R)
• M14: 12,246,381 km (0.108 R)
• M15: 13,745,651 km (0.104 R)
• M16: 14,761,271 km (0.084 R)
• M17: 16,996,412 km (0.071 R)
• M18: 17,714,333 km (0.075 R)
• M19: 18,741,771 km (0.052 R)
• M20: 19,687,977 km (0.036 R)
• M21: 20,852,597 km (0.114 R)

Kuiper Belt

Range: 30 - 55 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 521 - 16,967 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit