🌌 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 - Terrestrial

Semi-Major Axis: 0.53 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.56

Radius: 1.46

Gravity: 1.2 G

Time & Orbit

Eccentricity (e): 0.169

Orbit Range: 0.44 AU - 0.62 AU

Year: 249 Days

Day: 35.9 Hours

Environment

Temp: -130 °C

Axial Tilt: 6.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.96 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 469.1

Radius: 10.7

Gravity: 4.1 G

Time & Orbit

Eccentricity (e): 0.221

Orbit Range: 0.75 AU - 1.17 AU

Year: 607 Days

Day: 7.7 Hours

Environment

Temp: -159 °C

Axial Tilt: 17.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 36,988,441 km

• M1: 133,142 km (0.094 R)
• M2: 492,327 km (0.084 R)
• M3: 966,402 km (0.086 R)
• M4: 1,459,776 km (0.057 R)
• M5: 1,809,386 km (0.082 R)
• M6: 2,215,544 km (0.114 R)
• M7: 2,590,287 km (0.076 R)
• M8: 4,983,853 km (0.065 R)
• M9: 5,326,731 km (0.075 R)
• M10: 5,790,784 km (0.089 R)
• M11: 6,225,815 km (0.106 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.08 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 851.7

Radius: 12.8

Gravity: 5.2 G

Time & Orbit

Eccentricity (e): 0.056

Orbit Range: 1.02 AU - 1.14 AU

Year: 725 Days

Day: 8.2 Hours

Environment

Temp: -173 °C

Axial Tilt: 32.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 36,988,441 km

• M1: 159,172 km (0.037 R)
• M2: 566,378 km (0.091 R)
• M3: 1,096,403 km (0.038 R)
• M4: 2,050,538 km (0.056 R)
• M5: 2,542,565 km (0.114 R)
• M6: 3,075,283 km (0.104 R)
• M7: 3,596,632 km (0.055 R)
• M8: 4,399,823 km (0.086 R)
• M9: 5,245,649 km (0.079 R)
• M10: 6,014,134 km (0.056 R)
• M11: 6,425,827 km (0.081 R)
• M12: 7,445,037 km (0.087 R)
• M13: 7,993,613 km (0.066 R)

Asteroid Belt

Center: 2.05 AU

Composition

Type: Outer System (Icy)

A dense region of planetesimals and debris.

Boundary

Planet 4 - Gas Giant

Semi-Major Axis: 3.02 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 138.8

Radius: 13.3

Gravity: 0.78 G

Time & Orbit

Eccentricity (e): 0.189

Orbit Range: 2.45 AU - 3.59 AU

Year: 3389 Days

Day: 8.2 Hours

Environment

Temp: -198 °C

Axial Tilt: 3.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 36,988,441 km

• M1: 212,878 km (0.093 R)
• M2: 765,044 km (0.11 R)
• M3: 1,316,910 km (0.078 R)
• M4: 1,775,428 km (0.089 R)
• M5: 2,603,601 km (0.103 R)
• M6: 3,529,612 km (0.095 R)
• M7: 6,957,947 km (0.099 R)
• M8: 9,987,752 km (0.085 R)
• M9: 11,537,736 km (0.116 R)
• M10: 12,695,324 km (0.047 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.18 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 802.7

Radius: 8

Gravity: 12.54 G

Time & Orbit

Eccentricity (e): 0.182

Orbit Range: 2.6 AU - 3.76 AU

Year: 3661 Days

Day: 13.1 Hours

Environment

Temp: -215 °C

Axial Tilt: 61.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 36,988,441 km

• M1: 100,081 km (0.054 R)
• M2: 1,535,622 km (0.076 R)
• M3: 1,875,209 km (0.099 R)
• M4: 2,723,579 km (0.038 R)
• M5: 3,057,032 km (0.116 R)
• M6: 4,044,827 km (0.107 R)
• M7: 5,444,914 km (0.087 R)
• M8: 6,727,566 km (0.094 R)
• M9: 9,165,862 km (0.118 R)
• M10: 10,710,011 km (0.087 R)
• M11: 11,999,694 km (0.05 R)
• M12: 13,489,689 km (0.109 R)
• M13: 16,146,397 km (0.089 R)
• M14: 17,478,118 km (0.071 R)
• M15: 20,096,529 km (0.104 R)
• M16: 23,686,579 km (0.111 R)
• M17: 24,200,448 km (0.115 R)
• M18: 25,402,766 km (0.104 R)
• M19: 25,786,484 km (0.087 R)

Planet 6 - Gas Giant

Semi-Major Axis: 5.89 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 10.4

Radius: 12.6

Gravity: 0.07 G

Time & Orbit

Eccentricity (e): 0.072

Orbit Range: 5.47 AU - 6.31 AU

Year: 9230 Days

Day: 7.4 Hours

Environment

Temp: -216 °C

Axial Tilt: 14.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 36,988,441 km

• M1: 163,062 km (0.036 R)
• M2: 592,707 km (0.098 R)
• M3: 1,101,788 km (0.109 R)
• M4: 1,535,173 km (0.119 R)
• M5: 2,074,025 km (0.063 R)
• M6: 2,904,592 km (0.105 R)
• M7: 3,360,866 km (0.084 R)
• M8: 3,769,866 km (0.102 R)
• M9: 6,031,038 km (0.113 R)
• M10: 7,769,066 km (0.05 R)
• M11: 9,850,421 km (0.101 R)

Planet 7 - Ice Giant

Semi-Major Axis: 6.49 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 276.2

Radius: 6.7

Gravity: 6.15 G

Time & Orbit

Eccentricity (e): 0.039

Orbit Range: 6.24 AU - 6.74 AU

Year: 10675 Days

Day: 24.4 Hours

Environment

Temp: -220 °C

Axial Tilt: 34.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 36,988,441 km

• M1: 83,326 km (0.098 R)
• M2: 344,524 km (0.109 R)
• M3: 709,842 km (0.051 R)
• M4: 1,304,045 km (0.107 R)
• M5: 1,533,827 km (0.04 R)
• M6: 2,876,617 km (0.113 R)
• M7: 3,121,060 km (0.055 R)
• M8: 4,864,474 km (0.105 R)
• M9: 5,702,970 km (0.097 R)
• M10: 7,321,320 km (0.06 R)
• M11: 8,751,775 km (0.064 R)
• M12: 9,712,492 km (0.111 R)
• M13: 12,905,210 km (0.118 R)
• M14: 18,003,954 km (0.115 R)
• M15: 20,580,927 km (0.053 R)
• M16: 23,312,285 km (0.052 R)
• M17: 28,914,725 km (0.099 R)
• M18: 29,386,856 km (0.11 R)
• M19: 35,245,258 km (0.112 R)
• M20: 35,892,269 km (0.106 R)

Kuiper Belt

Range: 30 - 50 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 203 - 16,944 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit