🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.32 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.64 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.37

Radius: 1.63

Gravity: 1.27 G

Time & Orbit

Eccentricity (e): 0.118

Orbit Range: 0.56 AU - 0.72 AU

Year: 331 Days

Day: 23.5 Hours

Environment

Temp: -125 °C

Axial Tilt: 31.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.65 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.67

Radius: 1.23

Gravity: 1.1 G

Time & Orbit

Eccentricity (e): 0.208

Orbit Range: 0.51 AU - 0.79 AU

Year: 338 Days

Day: 22.5 Hours

Environment

Temp: -135 °C

Axial Tilt: 5.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.98 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 899

Radius: 9.9

Gravity: 9.17 G

Time & Orbit

Eccentricity (e): 0.159

Orbit Range: 0.82 AU - 1.14 AU

Year: 626 Days

Day: 12.6 Hours

Environment

Temp: -162 °C

Axial Tilt: 2.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 44,113,416 km

• M1: 124,017 km (0.108 R)
• M2: 536,159 km (0.094 R)
• M3: 958,922 km (0.075 R)
• M4: 1,357,900 km (0.082 R)
• M5: 1,689,558 km (0.086 R)
• M6: 2,047,696 km (0.115 R)
• M7: 2,860,461 km (0.088 R)
• M8: 3,204,835 km (0.08 R)
• M9: 3,604,710 km (0.08 R)
• M10: 4,251,272 km (0.055 R)
• M11: 4,973,531 km (0.12 R)
• M12: 5,492,785 km (0.104 R)
• M13: 7,450,872 km (0.068 R)
• M14: 7,821,425 km (0.082 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.37 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 917.7

Radius: 8.6

Gravity: 12.41 G

Time & Orbit

Eccentricity (e): 0.137

Orbit Range: 1.18 AU - 1.56 AU

Year: 1035 Days

Day: 9.1 Hours

Environment

Temp: -174 °C

Axial Tilt: 49 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 44,113,416 km

• M1: 110,553 km (0.094 R)
• M2: 412,441 km (0.094 R)
• M3: 706,102 km (0.04 R)
• M4: 993,180 km (0.077 R)
• M5: 1,674,599 km (0.111 R)
• M6: 1,986,061 km (0.087 R)
• M7: 4,709,491 km (0.085 R)
• M8: 5,194,636 km (0.102 R)
• M9: 6,683,883 km (0.087 R)
• M10: 7,347,649 km (0.11 R)
• M11: 8,300,288 km (0.115 R)
• M12: 9,154,941 km (0.119 R)
• M13: 9,422,571 km (0.116 R)
• M14: 11,240,485 km (0.073 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.39 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 220.9

Radius: 14.5

Gravity: 1.05 G

Time & Orbit

Eccentricity (e): 0.025

Orbit Range: 3.31 AU - 3.47 AU

Year: 4030 Days

Day: 7.1 Hours

Environment

Temp: -205 °C

Axial Tilt: 163 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 44,113,416 km

• M1: 181,163 km (0.115 R)
• M2: 684,111 km (0.117 R)
• M3: 1,421,928 km (0.104 R)
• M4: 2,647,882 km (0.035 R)
• M5: 4,535,508 km (0.11 R)
• M6: 4,988,790 km (0.075 R)
• M7: 6,561,512 km (0.047 R)
• M8: 7,201,043 km (0.09 R)
• M9: 8,735,618 km (0.037 R)
• M10: 10,331,678 km (0.074 R)
• M11: 11,830,948 km (0.098 R)
• M12: 13,514,971 km (0.056 R)
• M13: 15,210,513 km (0.118 R)

Planet 6 - Gas Giant

Semi-Major Axis: 5.09 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 176.7

Radius: 15

Gravity: 0.79 G

Time & Orbit

Eccentricity (e): 0.247

Orbit Range: 3.83 AU - 6.35 AU

Year: 7415 Days

Day: 14.7 Hours

Environment

Temp: -223 °C

Axial Tilt: 24.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 44,113,416 km

• M1: 187,446 km (0.106 R)
• M2: 969,394 km (0.084 R)
• M3: 1,727,257 km (0.094 R)
• M4: 2,930,323 km (0.109 R)
• M5: 4,878,536 km (0.112 R)
• M6: 5,707,907 km (0.101 R)
• M7: 6,539,073 km (0.111 R)
• M8: 7,884,705 km (0.084 R)
• M9: 8,732,776 km (0.105 R)
• M10: 11,034,489 km (0.103 R)
• M11: 11,557,184 km (0.087 R)
• M12: 13,916,043 km (0.102 R)
• M13: 17,559,050 km (0.053 R)
• M14: 20,142,456 km (0.034 R)
• M15: 20,727,533 km (0.051 R)
• M16: 22,205,410 km (0.107 R)
• M17: 24,996,308 km (0.045 R)

Planet 7 - Ice Giant

Semi-Major Axis: 6.27 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 519.6

Radius: 5

Gravity: 20.78 G

Time & Orbit

Eccentricity (e): 0.136

Orbit Range: 5.42 AU - 7.12 AU

Year: 10137 Days

Day: 17.3 Hours

Environment

Temp: -228 °C

Axial Tilt: 27.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 44,113,416 km

• M1: 71,209 km (0.094 R)
• M2: 336,595 km (0.105 R)
• M3: 619,335 km (0.118 R)
• M4: 827,575 km (0.076 R)
• M5: 1,336,807 km (0.08 R)
• M6: 1,808,937 km (0.084 R)
• M7: 3,054,041 km (0.11 R)
• M8: 10,011,837 km (0.097 R)
• M9: 14,978,337 km (0.097 R)
• M10: 19,171,566 km (0.117 R)
• M11: 20,726,486 km (0.081 R)
• M12: 23,041,962 km (0.109 R)
• M13: 25,432,685 km (0.055 R)
• M14: 29,979,712 km (0.086 R)
• M15: 30,700,026 km (0.116 R)
• M16: 32,175,510 km (0.105 R)
• M17: 39,525,104 km (0.077 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: 244 - 19,071 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit