🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.28 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.56 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.08

Radius: 1.34

Gravity: 1.16 G

Time & Orbit

Eccentricity (e): 0.111

Orbit Range: 0.5 AU - 0.62 AU

Year: 160 Days

Day: 34.4 Hours

Environment

Temp: 188 °C

Axial Tilt: 15.6 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 0.65 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.28

Radius: 1.79

Gravity: 1.34 G

Time & Orbit

Eccentricity (e): 0.035

Orbit Range: 0.63 AU - 0.67 AU

Year: 201 Days

Day: 16.5 Hours

Environment

Temp: 126 °C

Axial Tilt: 36.8 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Satellites (2)

Outer Limit: 73,514,836 km

• M1: 334,650 km (0.112 R)
• M2: 598,541 km (0.114 R)

Planet 3 - Terrestrial

Semi-Major Axis: 1.37 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.33

Radius: 1.62

Gravity: 1.27 G

Time & Orbit

Eccentricity (e): 0.232

Orbit Range: 1.05 AU - 1.69 AU

Year: 614 Days

Day: 25.9 Hours

Environment

Temp: -49 °C

Axial Tilt: 39.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 73,514,836 km

• M1: 686,953 km (0.103 R)

Planet 4 - Terrestrial

Semi-Major Axis: 1.6 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.34

Radius: 1.12

Gravity: 1.07 G

Time & Orbit

Eccentricity (e): 0.072

Orbit Range: 1.48 AU - 1.72 AU

Year: 775 Days

Day: 42 Hours

Environment

Temp: -70 °C

Axial Tilt: 31.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 5 - Terrestrial

Semi-Major Axis: 2.39 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.55

Radius: 0.79

Gravity: 0.88 G

Time & Orbit

Eccentricity (e): 0.179

Orbit Range: 1.96 AU - 2.82 AU

Year: 1415 Days

Day: 26.4 Hours

Environment

Temp: -101 °C

Axial Tilt: 7.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 73,514,836 km

• M1: 18,849 km (0.083 R)

Planet 6 - Terrestrial

Semi-Major Axis: 2.71 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1

Radius: 1

Gravity: 1 G

Time & Orbit

Eccentricity (e): 0.147

Orbit Range: 2.31 AU - 3.11 AU

Year: 1708 Days

Day: 32.4 Hours

Environment

Temp: -118 °C

Axial Tilt: 37.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Asteroid Belt

Center: 4.47 AU

Composition

Type: Main (Rocky/Icy Mix)

A dense region of planetesimals and debris.

Boundary

Planet 7 - Gas Giant

Semi-Major Axis: 6.22 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 631.6

Radius: 12

Gravity: 4.39 G

Time & Orbit

Eccentricity (e): 0.2

Orbit Range: 4.98 AU - 7.46 AU

Year: 5940 Days

Day: 5.3 Hours

Environment

Temp: -169 °C

Axial Tilt: 36.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 73,514,836 km

• M1: 149,448 km (0.082 R)
• M2: 522,994 km (0.107 R)
• M3: 941,270 km (0.102 R)
• M4: 1,473,539 km (0.104 R)
• M5: 2,125,935 km (0.102 R)
• M6: 3,491,465 km (0.119 R)
• M7: 4,153,585 km (0.089 R)
• M8: 4,924,912 km (0.075 R)
• M9: 5,490,691 km (0.086 R)
• M10: 6,786,657 km (0.064 R)
• M11: 7,308,604 km (0.077 R)
• M12: 9,286,587 km (0.073 R)
• M13: 11,501,832 km (0.092 R)
• M14: 13,555,063 km (0.1 R)
• M15: 14,328,334 km (0.062 R)
• M16: 14,956,346 km (0.106 R)
• M17: 16,950,935 km (0.111 R)
• M18: 17,524,343 km (0.053 R)
• M19: 19,048,895 km (0.047 R)
• M20: 19,530,002 km (0.099 R)
• M21: 20,660,064 km (0.106 R)
• M22: 21,535,810 km (0.099 R)
• M23: 22,665,125 km (0.08 R)
• M24: 28,731,318 km (0.12 R)
• M25: 32,086,948 km (0.105 R)

Planet 8 - Ice Giant

Semi-Major Axis: 16.87 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 351.1

Radius: 4.8

Gravity: 15.24 G

Time & Orbit

Eccentricity (e): 0.216

Orbit Range: 13.23 AU - 20.51 AU

Year: 26530 Days

Day: 24.6 Hours

Environment

Temp: -197 °C

Axial Tilt: 109.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (37)

Outer Limit: 73,514,836 km

• M1: 65,973 km (0.113 R)
• M2: 317,596 km (0.073 R)
• M3: 579,542 km (0.086 R)
• M4: 730,337 km (0.055 R)
• M5: 907,610 km (0.062 R)
• M6: 1,075,160 km (0.071 R)
• M7: 1,984,117 km (0.082 R)
• M8: 2,185,026 km (0.096 R)
• M9: 3,690,579 km (0.108 R)
• M10: 4,586,671 km (0.111 R)
• M11: 6,189,761 km (0.073 R)
• M12: 8,861,280 km (0.079 R)
• M13: 11,307,953 km (0.101 R)
• M14: 12,280,788 km (0.034 R)
• M15: 12,549,317 km (0.105 R)
• M16: 12,753,368 km (0.091 R)
• M17: 18,779,021 km (0.075 R)
• M18: 26,128,614 km (0.04 R)
• M19: 27,820,866 km (0.102 R)
• M20: 28,284,170 km (0.112 R)
• M21: 31,924,335 km (0.087 R)
• M22: 33,203,995 km (0.027 R)
• M23: 35,457,089 km (0.097 R)
• M24: 41,006,721 km (0.105 R)
• M25: 42,364,771 km (0.117 R)
• M26: 46,294,108 km (0.082 R)
• M27: 47,436,288 km (0.101 R)
• M28: 53,787,166 km (0.116 R)
• M29: 56,886,086 km (0.048 R)
• M30: 58,195,965 km (0.102 R)
• M31: 58,384,758 km (0.094 R)
• M32: 59,334,704 km (0.093 R)
• M33: 60,875,862 km (0.058 R)
• M34: 61,460,640 km (0.115 R)
• M35: 63,038,299 km (0.107 R)
• M36: 66,480,097 km (0.091 R)
• M37: 67,724,153 km (0.118 R)

Kuiper Belt

Range: 30 - 54 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 535 - 17,806 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit