🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.26 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.51 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.5

Radius: 1.44

Gravity: 1.21 G

Time & Orbit

Eccentricity (e): 0.189

Orbit Range: 0.41 AU - 0.61 AU

Year: 239 Days

Day: 12.6 Hours

Environment

Temp: -114 °C

Axial Tilt: 43.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.63 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.73

Radius: 1.25

Gravity: 1.11 G

Time & Orbit

Eccentricity (e): 0.039

Orbit Range: 0.61 AU - 0.65 AU

Year: 328 Days

Day: 46.6 Hours

Environment

Temp: -136 °C

Axial Tilt: 28.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Terrestrial

Semi-Major Axis: 0.67 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.76

Radius: 1.5

Gravity: 1.23 G

Time & Orbit

Eccentricity (e): 0.243

Orbit Range: 0.51 AU - 0.83 AU

Year: 360 Days

Day: 19.4 Hours

Environment

Temp: -131 °C

Axial Tilt: 23.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 4 - Gas Giant

Semi-Major Axis: 1.02 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 840.4

Radius: 14.5

Gravity: 4 G

Time & Orbit

Eccentricity (e): 0.119

Orbit Range: 0.9 AU - 1.14 AU

Year: 676 Days

Day: 10 Hours

Environment

Temp: -167 °C

Axial Tilt: 47 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 11,326,797 km

• M1: 180,864 km (0.107 R)
• M2: 775,964 km (0.098 R)
• M3: 1,311,973 km (0.099 R)
• M4: 1,944,473 km (0.081 R)
• M5: 2,416,454 km (0.105 R)
• M6: 2,894,120 km (0.104 R)
• M7: 3,612,190 km (0.106 R)
• M8: 4,320,087 km (0.095 R)
• M9: 4,927,903 km (0.035 R)
• M10: 5,555,018 km (0.095 R)
• M11: 6,480,580 km (0.099 R)
• M12: 7,738,847 km (0.111 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.84 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 903.2

Radius: 14.1

Gravity: 4.54 G

Time & Orbit

Eccentricity (e): 0.05

Orbit Range: 1.75 AU - 1.93 AU

Year: 1637 Days

Day: 11 Hours

Environment

Temp: -179 °C

Axial Tilt: 14 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 11,326,797 km

• M1: 175,329 km (0.092 R)
• M2: 629,807 km (0.087 R)
• M3: 1,369,419 km (0.119 R)
• M4: 1,842,447 km (0.042 R)
• M5: 2,557,376 km (0.092 R)
• M6: 3,226,228 km (0.088 R)
• M7: 5,579,851 km (0.1 R)
• M8: 8,050,609 km (0.106 R)
• M9: 9,428,256 km (0.113 R)
• M10: 10,104,139 km (0.068 R)
• M11: 11,667,288 km (0.115 R)
• M12: 13,136,937 km (0.054 R)
• M13: 14,460,579 km (0.099 R)
• M14: 15,498,788 km (0.111 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.69 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 193.2

Radius: 8.6

Gravity: 2.61 G

Time & Orbit

Eccentricity (e): 0.234

Orbit Range: 2.06 AU - 3.32 AU

Year: 2894 Days

Day: 7.4 Hours

Environment

Temp: -208 °C

Axial Tilt: 31.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 11,326,797 km

• M1: 106,962 km (0.102 R)
• M2: 541,694 km (0.097 R)
• M3: 844,031 km (0.057 R)
• M4: 1,261,559 km (0.087 R)
• M5: 1,762,113 km (0.085 R)
• M6: 2,059,215 km (0.103 R)
• M7: 2,377,559 km (0.034 R)
• M8: 3,099,219 km (0.095 R)
• M9: 3,391,085 km (0.103 R)
• M10: 3,837,485 km (0.1 R)
• M11: 4,688,248 km (0.048 R)
• M12: 5,137,340 km (0.094 R)
• M13: 6,683,434 km (0.068 R)
• M14: 8,052,105 km (0.109 R)
• M15: 8,666,653 km (0.087 R)
• M16: 9,093,606 km (0.056 R)
• M17: 10,838,067 km (0.055 R)
• M18: 11,881,661 km (0.118 R)
• M19: 12,717,016 km (0.116 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.77 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 754.8

Radius: 10

Gravity: 7.55 G

Time & Orbit

Eccentricity (e): 0.091

Orbit Range: 3.43 AU - 4.11 AU

Year: 4802 Days

Day: 12.4 Hours

Environment

Temp: -215 °C

Axial Tilt: 46.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 11,326,797 km

• M1: 132,245 km (0.034 R)
• M2: 482,752 km (0.029 R)
• M3: 908,508 km (0.089 R)
• M4: 1,323,193 km (0.058 R)
• M5: 1,959,583 km (0.089 R)
• M6: 4,088,061 km (0.101 R)
• M7: 7,577,132 km (0.104 R)
• M8: 10,318,214 km (0.116 R)
• M9: 11,741,937 km (0.084 R)
• M10: 13,085,027 km (0.105 R)
• M11: 15,662,897 km (0.105 R)
• M12: 17,853,608 km (0.094 R)
• M13: 18,237,476 km (0.118 R)
• M14: 20,449,131 km (0.072 R)
• M15: 25,478,462 km (0.028 R)
• M16: 27,975,999 km (0.118 R)
• M17: 28,581,421 km (0.103 R)

Planet 8 - Gas Giant

Semi-Major Axis: 4.14 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 29.6

Radius: 11.9

Gravity: 0.21 G

Time & Orbit

Eccentricity (e): 0.205

Orbit Range: 3.29 AU - 4.99 AU

Year: 5526 Days

Day: 13.2 Hours

Environment

Temp: -220 °C

Axial Tilt: 36.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 11,326,797 km

• M1: 147,952 km (0.097 R)
• M2: 742,155 km (0.065 R)
• M3: 1,180,327 km (0.048 R)
• M4: 1,927,868 km (0.097 R)
• M5: 4,959,020 km (0.084 R)
• M6: 5,957,885 km (0.04 R)
• M7: 8,351,750 km (0.077 R)
• M8: 8,824,479 km (0.055 R)
• M9: 9,854,012 km (0.052 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: 533 - 14,990 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit