🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.4 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.79 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.7

Radius: 1.86

Gravity: 1.36 G

Time & Orbit

Eccentricity (e): 0.164

Orbit Range: 0.66 AU - 0.92 AU

Year: 253 Days

Day: 43.3 Hours

Environment

Temp: 100 °C

Axial Tilt: 26.8 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Satellites (1)

Outer Limit: 81,125,433 km

• M1: 43,383 km (0.077 R)

Planet 2 - Terrestrial

Semi-Major Axis: 1.08 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.67

Radius: 1.85

Gravity: 1.36 G

Time & Orbit

Eccentricity (e): 0.146

Orbit Range: 0.92 AU - 1.24 AU

Year: 404 Days

Day: 33.3 Hours

Environment

Temp: 15 °C

Axial Tilt: 13.7 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Planet 3 - Terrestrial

Semi-Major Axis: 1.1 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.22

Radius: 1.78

Gravity: 1.33 G

Time & Orbit

Eccentricity (e): 0.143

Orbit Range: 0.94 AU - 1.26 AU

Year: 415 Days

Day: 19.9 Hours

Environment

Temp: 34 °C

Axial Tilt: 9.8 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Satellites (1)

Outer Limit: 81,125,433 km

• M1: 901,028 km (0.096 R)

Planet 4 - Terrestrial

Semi-Major Axis: 2.98 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.33

Radius: 1.4

Gravity: 1.19 G

Time & Orbit

Eccentricity (e): 0.177

Orbit Range: 2.45 AU - 3.51 AU

Year: 1851 Days

Day: 29.8 Hours

Environment

Temp: -94 °C

Axial Tilt: 38.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 5 - Terrestrial

Semi-Major Axis: 3.13 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.29

Radius: 0.61

Gravity: 0.78 G

Time & Orbit

Eccentricity (e): 0.156

Orbit Range: 2.64 AU - 3.62 AU

Year: 1993 Days

Day: 47.7 Hours

Environment

Temp: -109 °C

Axial Tilt: 5.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 6 - Terrestrial

Semi-Major Axis: 4.16 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.61

Radius: 0.82

Gravity: 0.91 G

Time & Orbit

Eccentricity (e): 0.109

Orbit Range: 3.71 AU - 4.61 AU

Year: 3054 Days

Day: 37.7 Hours

Environment

Temp: -114 °C

Axial Tilt: 18.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 7 - Gas Giant

Semi-Major Axis: 6.83 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 586.2

Radius: 10.5

Gravity: 5.32 G

Time & Orbit

Eccentricity (e): 0.108

Orbit Range: 6.09 AU - 7.57 AU

Year: 6424 Days

Day: 13 Hours

Environment

Temp: -155 °C

Axial Tilt: 9.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 81,125,433 km

• M1: 130,599 km (0.116 R)
• M2: 489,933 km (0.085 R)
• M3: 1,060,200 km (0.079 R)
• M4: 2,011,942 km (0.104 R)
• M5: 3,351,890 km (0.108 R)
• M6: 6,614,021 km (0.043 R)
• M7: 7,716,109 km (0.08 R)
• M8: 10,789,597 km (0.064 R)
• M9: 11,509,611 km (0.091 R)
• M10: 14,540,464 km (0.09 R)
• M11: 15,840,769 km (0.026 R)
• M12: 17,152,742 km (0.08 R)
• M13: 18,133,356 km (0.104 R)
• M14: 18,671,310 km (0.094 R)
• M15: 19,081,807 km (0.088 R)
• M16: 23,287,601 km (0.119 R)
• M17: 25,731,881 km (0.072 R)
• M18: 30,365,376 km (0.065 R)
• M19: 31,508,603 km (0.116 R)
• M20: 32,188,675 km (0.056 R)

Planet 8 - Gas Giant

Semi-Major Axis: 7.2 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 316.7

Radius: 8.2

Gravity: 4.71 G

Time & Orbit

Eccentricity (e): 0.116

Orbit Range: 6.36 AU - 8.04 AU

Year: 6953 Days

Day: 14.9 Hours

Environment

Temp: -149 °C

Axial Tilt: 6.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 81,125,433 km

• M1: 103,971 km (0.059 R)
• M2: 423,362 km (0.098 R)
• M3: 794,365 km (0.12 R)
• M4: 1,134,251 km (0.102 R)
• M5: 1,398,890 km (0.106 R)
• M6: 1,679,984 km (0.117 R)
• M7: 3,111,486 km (0.083 R)
• M8: 4,540,744 km (0.1 R)
• M9: 5,584,040 km (0.11 R)
• M10: 7,489,169 km (0.074 R)
• M11: 8,781,245 km (0.12 R)
• M12: 9,500,961 km (0.111 R)
• M13: 10,476,788 km (0.069 R)
• M14: 11,658,910 km (0.118 R)
• M15: 13,028,628 km (0.113 R)
• M16: 14,124,133 km (0.108 R)
• M17: 23,118,556 km (0.053 R)
• M18: 25,508,382 km (0.081 R)
• M19: 27,635,963 km (0.117 R)

Planet 9 - Ice Giant

Semi-Major Axis: 20 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 320.5

Radius: 4.1

Gravity: 19.07 G

Time & Orbit

Eccentricity (e): 0.208

Orbit Range: 15.84 AU - 24.16 AU

Year: 32190 Days

Day: 19.2 Hours

Environment

Temp: -209 °C

Axial Tilt: 33.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 81,125,433 km

• M1: 51,013 km (0.043 R)
• M2: 220,956 km (0.064 R)
• M3: 642,972 km (0.075 R)
• M4: 1,700,629 km (0.108 R)
• M5: 1,908,121 km (0.112 R)
• M6: 3,802,179 km (0.107 R)
• M7: 9,824,840 km (0.114 R)
• M8: 13,687,457 km (0.119 R)
• M9: 14,596,264 km (0.104 R)
• M10: 19,749,761 km (0.095 R)
• M11: 21,204,750 km (0.089 R)
• M12: 24,435,167 km (0.114 R)
• M13: 25,543,388 km (0.113 R)
• M14: 29,068,362 km (0.052 R)
• M15: 39,872,320 km (0.119 R)
• M16: 40,023,863 km (0.083 R)
• M17: 41,873,192 km (0.089 R)
• M18: 57,785,918 km (0.094 R)
• M19: 63,595,252 km (0.062 R)
• M20: 68,036,962 km (0.094 R)
• M21: 72,680,779 km (0.107 R)
• M22: 74,964,690 km (0.078 R)
• M23: 79,434,824 km (0.083 R)

Kuiper Belt

Range: 30.5 - 48.5 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 336 - 13,158 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit