🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.52 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 1.04 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.21

Radius: 0.54

Gravity: 0.72 G

Time & Orbit

Eccentricity (e): 0.032

Orbit Range: 1.01 AU - 1.07 AU

Year: 369 Days

Day: 20.3 Hours

Environment

Temp: 91 °C

Axial Tilt: 19.2 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Satellites (1)

Outer Limit: 26,783,860 km

• M1: 12,566 km (0.106 R)

Planet 2 - Terrestrial

Semi-Major Axis: 1.43 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.91

Radius: 1.73

Gravity: 1.31 G

Time & Orbit

Eccentricity (e): 0.225

Orbit Range: 1.11 AU - 1.75 AU

Year: 596 Days

Day: 18 Hours

Environment

Temp: 14 °C

Axial Tilt: 9 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Planet 3 - Terrestrial

Semi-Major Axis: 1.88 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.75

Radius: 0.89

Gravity: 0.95 G

Time & Orbit

Eccentricity (e): 0.118

Orbit Range: 1.66 AU - 2.1 AU

Year: 898 Days

Day: 34.4 Hours

Environment

Temp: -39 °C

Axial Tilt: 27.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 26,783,860 km

• M1: 944,711 km (0.103 R)

Planet 4 - Terrestrial

Semi-Major Axis: 1.94 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.34

Radius: 1.8

Gravity: 1.34 G

Time & Orbit

Eccentricity (e): 0.248

Orbit Range: 1.46 AU - 2.42 AU

Year: 941 Days

Day: 26.6 Hours

Environment

Temp: -43 °C

Axial Tilt: 4.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 5 - Terrestrial

Semi-Major Axis: 2.23 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.47

Radius: 1.64

Gravity: 1.29 G

Time & Orbit

Eccentricity (e): 0.216

Orbit Range: 1.75 AU - 2.71 AU

Year: 1160 Days

Day: 44.9 Hours

Environment

Temp: -61 °C

Axial Tilt: 12 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 6 - Terrestrial

Semi-Major Axis: 4.92 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.45

Radius: 1.82

Gravity: 1.34 G

Time & Orbit

Eccentricity (e): 0.107

Orbit Range: 4.39 AU - 5.45 AU

Year: 3801 Days

Day: 19.4 Hours

Environment

Temp: -132 °C

Axial Tilt: 24.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 26,783,860 km

• M1: 613,351 km (0.105 R)

Asteroid Belt

Center: 6.25 AU

Composition

Type: Main (Rocky/Icy Mix)

A dense region of planetesimals and debris.

Boundary

Planet 7 - Gas Giant

Semi-Major Axis: 7.57 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 183.4

Radius: 11.1

Gravity: 1.49 G

Time & Orbit

Eccentricity (e): 0.207

Orbit Range: 6 AU - 9.14 AU

Year: 7253 Days

Day: 7.2 Hours

Environment

Temp: -146 °C

Axial Tilt: 37.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 26,783,860 km

• M1: 138,079 km (0.117 R)
• M2: 761,902 km (0.104 R)
• M3: 3,332,143 km (0.072 R)
• M4: 4,087,014 km (0.041 R)
• M5: 8,040,287 km (0.072 R)
• M6: 10,393,462 km (0.104 R)
• M7: 13,613,855 km (0.106 R)
• M8: 14,996,289 km (0.039 R)
• M9: 15,477,246 km (0.094 R)
• M10: 17,622,629 km (0.051 R)
• M11: 20,346,058 km (0.039 R)
• M12: 21,002,195 km (0.1 R)

Planet 8 - Gas Giant

Semi-Major Axis: 8.04 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 469

Radius: 9.8

Gravity: 4.88 G

Time & Orbit

Eccentricity (e): 0.213

Orbit Range: 6.33 AU - 9.75 AU

Year: 7939 Days

Day: 5.5 Hours

Environment

Temp: -166 °C

Axial Tilt: 7.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (29)

Outer Limit: 26,783,860 km

• M1: 121,922 km (0.117 R)
• M2: 432,936 km (0.113 R)
• M3: 940,073 km (0.091 R)
• M4: 2,166,028 km (0.091 R)
• M5: 2,796,433 km (0.062 R)
• M6: 3,239,243 km (0.097 R)
• M7: 4,553,759 km (0.104 R)
• M8: 5,024,244 km (0.046 R)
• M9: 6,495,689 km (0.09 R)
• M10: 6,842,756 km (0.11 R)
• M11: 7,312,344 km (0.082 R)
• M12: 7,997,801 km (0.107 R)
• M13: 8,642,718 km (0.114 R)
• M14: 9,148,807 km (0.076 R)
• M15: 9,990,295 km (0.116 R)
• M16: 10,834,476 km (0.115 R)
• M17: 12,032,905 km (0.079 R)
• M18: 14,750,799 km (0.099 R)
• M19: 15,412,919 km (0.112 R)
• M20: 16,538,942 km (0.026 R)
• M21: 17,385,666 km (0.086 R)
• M22: 20,540,835 km (0.066 R)
• M23: 25,230,130 km (0.116 R)
• M24: 26,703,370 km (0.115 R)
• M25: 28,972,769 km (0.058 R)
• M26: 32,563,118 km (0.084 R)
• M27: 33,171,981 km (0.068 R)
• M28: 34,412,597 km (0.092 R)
• M29: 35,576,618 km (0.08 R)

Planet 9 - Gas Giant

Semi-Major Axis: 8.07 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 187.5

Radius: 13.7

Gravity: 1 G

Time & Orbit

Eccentricity (e): 0.165

Orbit Range: 6.74 AU - 9.4 AU

Year: 7984 Days

Day: 6.2 Hours

Environment

Temp: -166 °C

Axial Tilt: 16.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 26,783,860 km

• M1: 172,636 km (0.069 R)
• M2: 1,118,094 km (0.111 R)
• M3: 1,677,291 km (0.092 R)
• M4: 2,227,811 km (0.086 R)
• M5: 3,848,106 km (0.113 R)
• M6: 6,574,677 km (0.078 R)
• M7: 7,683,347 km (0.061 R)
• M8: 8,210,679 km (0.108 R)
• M9: 9,495,874 km (0.118 R)
• M10: 11,174,811 km (0.084 R)
• M11: 14,209,404 km (0.035 R)
• M12: 15,608,743 km (0.105 R)
• M13: 16,057,237 km (0.115 R)
• M14: 17,454,780 km (0.052 R)
• M15: 18,805,799 km (0.105 R)
• M16: 21,165,406 km (0.046 R)
• M17: 22,275,123 km (0.066 R)
• M18: 23,060,213 km (0.093 R)
• M19: 23,642,747 km (0.12 R)
• M20: 24,761,440 km (0.071 R)

Kuiper Belt

Range: 31.5 - 61.5 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 201 - 18,201 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit