🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.39 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.78 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.52

Radius: 1.45

Gravity: 1.2 G

Time & Orbit

Eccentricity (e): 0.139

Orbit Range: 0.67 AU - 0.89 AU

Year: 260 Days

Day: 31.3 Hours

Environment

Temp: 166 °C

Axial Tilt: 28.1 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 0.8 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.94

Radius: 1.89

Gravity: 1.38 G

Time & Orbit

Eccentricity (e): 0.097

Orbit Range: 0.72 AU - 0.88 AU

Year: 270 Days

Day: 33.9 Hours

Environment

Temp: 165 °C

Axial Tilt: 42.3 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Satellites (1)

Outer Limit: 81,342,486 km

• M1: 144,960 km (0.098 R)

Planet 3 - Terrestrial

Semi-Major Axis: 0.85 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.61

Radius: 0.82

Gravity: 0.91 G

Time & Orbit

Eccentricity (e): 0.211

Orbit Range: 0.67 AU - 1.03 AU

Year: 295 Days

Day: 46.2 Hours

Environment

Temp: 79 °C

Axial Tilt: 13.9 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 4 - Terrestrial

Semi-Major Axis: 1.08 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.31

Radius: 1.4

Gravity: 1.18 G

Time & Orbit

Eccentricity (e): 0.008

Orbit Range: 1.07 AU - 1.09 AU

Year: 423 Days

Day: 21.5 Hours

Environment

Temp: 9 °C

Axial Tilt: 31.2 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Planet 5 - Terrestrial

Semi-Major Axis: 2.11 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.99

Radius: 1.74

Gravity: 1.32 G

Time & Orbit

Eccentricity (e): 0.116

Orbit Range: 1.87 AU - 2.35 AU

Year: 1155 Days

Day: 29.4 Hours

Environment

Temp: -78 °C

Axial Tilt: 29.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 6 - Terrestrial

Semi-Major Axis: 2.65 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.85

Radius: 1.71

Gravity: 1.32 G

Time & Orbit

Eccentricity (e): 0.226

Orbit Range: 2.05 AU - 3.25 AU

Year: 1625 Days

Day: 45.8 Hours

Environment

Temp: -96 °C

Axial Tilt: 5.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 7 - Gas Giant

Semi-Major Axis: 5.8 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 803.6

Radius: 13.2

Gravity: 4.61 G

Time & Orbit

Eccentricity (e): 0.141

Orbit Range: 4.98 AU - 6.62 AU

Year: 5262 Days

Day: 5.8 Hours

Environment

Temp: -150 °C

Axial Tilt: 35.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 81,342,486 km

• M1: 164,109 km (0.106 R)
• M2: 646,263 km (0.078 R)
• M3: 2,326,097 km (0.084 R)
• M4: 2,770,852 km (0.103 R)
• M5: 3,700,154 km (0.082 R)
• M6: 4,140,719 km (0.116 R)
• M7: 6,397,104 km (0.098 R)
• M8: 6,829,592 km (0.098 R)
• M9: 7,642,656 km (0.098 R)
• M10: 9,377,543 km (0.075 R)
• M11: 10,610,229 km (0.112 R)
• M12: 12,658,373 km (0.077 R)
• M13: 14,162,580 km (0.068 R)
• M14: 16,206,685 km (0.092 R)
• M15: 18,307,787 km (0.057 R)
• M16: 24,546,617 km (0.096 R)
• M17: 25,528,428 km (0.066 R)
• M18: 27,832,833 km (0.107 R)
• M19: 29,171,435 km (0.09 R)
• M20: 29,810,667 km (0.115 R)
• M21: 30,833,916 km (0.083 R)
• M22: 31,784,312 km (0.091 R)

Planet 8 - Ice Giant

Semi-Major Axis: 15.24 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 666.4

Radius: 6.6

Gravity: 15.3 G

Time & Orbit

Eccentricity (e): 0.008

Orbit Range: 15.12 AU - 15.36 AU

Year: 22413 Days

Day: 23 Hours

Environment

Temp: -191 °C

Axial Tilt: 44.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 81,342,486 km

• M1: 90,507 km (0.057 R)
• M2: 488,437 km (0.077 R)
• M3: 1,083,687 km (0.092 R)
• M4: 1,461,422 km (0.119 R)
• M5: 2,769,805 km (0.098 R)
• M6: 3,002,280 km (0.118 R)
• M7: 3,626,252 km (0.097 R)
• M8: 17,372,352 km (0.108 R)
• M9: 18,166,118 km (0.116 R)
• M10: 18,708,710 km (0.117 R)
• M11: 22,192,844 km (0.034 R)
• M12: 23,021,916 km (0.097 R)
• M13: 23,338,016 km (0.079 R)
• M14: 27,597,516 km (0.072 R)
• M15: 28,555,990 km (0.117 R)
• M16: 33,412,834 km (0.095 R)
• M17: 39,390,765 km (0.108 R)
• M18: 46,545,732 km (0.062 R)
• M19: 47,051,373 km (0.105 R)
• M20: 48,763,371 km (0.093 R)
• M21: 68,223,959 km (0.083 R)

Kuiper Belt

Range: 30 - 59 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 402 - 11,433 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit