🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.29 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.58 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.13

Radius: 1.76

Gravity: 1.33 G

Time & Orbit

Eccentricity (e): 0.123

Orbit Range: 0.51 AU - 0.65 AU

Year: 285 Days

Day: 36.3 Hours

Environment

Temp: -127 °C

Axial Tilt: 4.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 11,957,034 km

• M1: 113,395 km (0.093 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.8 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 702.2

Radius: 8.4

Gravity: 9.95 G

Time & Orbit

Eccentricity (e): 0.095

Orbit Range: 0.72 AU - 0.88 AU

Year: 462 Days

Day: 14.7 Hours

Environment

Temp: -139 °C

Axial Tilt: 22.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 11,957,034 km

• M1: 104,419 km (0.102 R)
• M2: 437,574 km (0.114 R)
• M3: 828,772 km (0.064 R)
• M4: 1,548,637 km (0.081 R)
• M5: 1,903,783 km (0.06 R)
• M6: 2,919,552 km (0.065 R)
• M7: 3,888,497 km (0.089 R)
• M8: 4,699,916 km (0.108 R)
• M9: 5,010,033 km (0.117 R)
• M10: 5,585,536 km (0.027 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.07 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 642.7

Radius: 10.9

Gravity: 5.41 G

Time & Orbit

Eccentricity (e): 0.009

Orbit Range: 1.06 AU - 1.08 AU

Year: 715 Days

Day: 8.7 Hours

Environment

Temp: -158 °C

Axial Tilt: 17.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 11,957,034 km

• M1: 135,536 km (0.114 R)
• M2: 518,805 km (0.092 R)
• M3: 1,014,274 km (0.119 R)
• M4: 1,450,351 km (0.083 R)
• M5: 1,886,280 km (0.112 R)
• M6: 2,461,633 km (0.12 R)
• M7: 2,825,904 km (0.092 R)
• M8: 3,791,259 km (0.113 R)
• M9: 4,728,041 km (0.106 R)
• M10: 5,331,668 km (0.096 R)
• M11: 6,142,788 km (0.043 R)
• M12: 6,526,506 km (0.106 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.18 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 268.9

Radius: 10.2

Gravity: 2.58 G

Time & Orbit

Eccentricity (e): 0.193

Orbit Range: 0.95 AU - 1.41 AU

Year: 828 Days

Day: 9.3 Hours

Environment

Temp: -162 °C

Axial Tilt: 29.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 11,957,034 km

• M1: 126,859 km (0.069 R)
• M2: 548,426 km (0.039 R)
• M3: 891,454 km (0.071 R)
• M4: 1,662,631 km (0.081 R)
• M5: 2,408,227 km (0.092 R)
• M6: 3,784,976 km (0.095 R)
• M7: 5,557,710 km (0.076 R)
• M8: 6,002,615 km (0.085 R)
• M9: 6,626,288 km (0.069 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.22 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 15.7

Radius: 14.9

Gravity: 0.07 G

Time & Orbit

Eccentricity (e): 0.026

Orbit Range: 1.19 AU - 1.25 AU

Year: 870 Days

Day: 6.9 Hours

Environment

Temp: -170 °C

Axial Tilt: 14.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (4)

Outer Limit: 11,957,034 km

• M1: 185,501 km (0.07 R)
• M2: 653,443 km (0.111 R)
• M3: 1,542,204 km (0.081 R)
• M4: 2,271,793 km (0.074 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.49 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 218.1

Radius: 10.1

Gravity: 2.14 G

Time & Orbit

Eccentricity (e): 0.05

Orbit Range: 1.42 AU - 1.56 AU

Year: 1174 Days

Day: 11.5 Hours

Environment

Temp: -180 °C

Axial Tilt: 11.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 11,957,034 km

• M1: 125,662 km (0.062 R)
• M2: 453,880 km (0.031 R)
• M3: 834,158 km (0.12 R)
• M4: 2,500,977 km (0.042 R)
• M5: 3,081,118 km (0.098 R)
• M6: 3,679,210 km (0.118 R)
• M7: 4,154,632 km (0.081 R)
• M8: 4,573,805 km (0.096 R)
• M9: 5,211,541 km (0.102 R)
• M10: 5,774,777 km (0.101 R)
• M11: 6,916,209 km (0.088 R)

Planet 7 - Gas Giant

Semi-Major Axis: 2.23 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 896.7

Radius: 12.5

Gravity: 5.74 G

Time & Orbit

Eccentricity (e): 0.102

Orbit Range: 2 AU - 2.46 AU

Year: 2150 Days

Day: 12.7 Hours

Environment

Temp: -189 °C

Axial Tilt: 31.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 11,957,034 km

• M1: 155,582 km (0.084 R)
• M2: 587,471 km (0.118 R)
• M3: 1,063,042 km (0.106 R)
• M4: 2,180,987 km (0.052 R)
• M5: 2,704,730 km (0.085 R)
• M6: 3,703,594 km (0.102 R)
• M7: 4,934,187 km (0.029 R)
• M8: 5,352,313 km (0.073 R)
• M9: 6,420,890 km (0.084 R)
• M10: 6,835,426 km (0.067 R)
• M11: 7,445,785 km (0.118 R)
• M12: 9,046,482 km (0.108 R)
• M13: 9,964,265 km (0.08 R)
• M14: 11,021,174 km (0.113 R)
• M15: 11,576,930 km (0.104 R)
• M16: 12,360,973 km (0.114 R)
• M17: 13,357,145 km (0.109 R)
• M18: 13,761,359 km (0.085 R)
• M19: 14,359,451 km (0.069 R)
• M20: 15,313,436 km (0.091 R)
• M21: 16,513,660 km (0.032 R)
• M22: 18,485,210 km (0.092 R)

Planet 8 - Gas Giant

Semi-Major Axis: 2.4 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 184.5

Radius: 13.9

Gravity: 0.95 G

Time & Orbit

Eccentricity (e): 0.085

Orbit Range: 2.2 AU - 2.6 AU

Year: 2401 Days

Day: 9.6 Hours

Environment

Temp: -202 °C

Axial Tilt: 8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 11,957,034 km

• M1: 172,935 km (0.113 R)
• M2: 871,856 km (0.093 R)
• M3: 1,576,313 km (0.081 R)
• M4: 2,209,261 km (0.065 R)
• M5: 2,874,074 km (0.092 R)
• M6: 3,364,456 km (0.084 R)
• M7: 4,010,569 km (0.092 R)
• M8: 4,719,514 km (0.105 R)
• M9: 6,093,869 km (0.052 R)
• M10: 7,207,326 km (0.073 R)
• M11: 9,200,269 km (0.088 R)
• M12: 10,762,520 km (0.083 R)
• M13: 11,469,070 km (0.086 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: 444 - 18,803 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit