🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.37 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.73 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.68

Radius: 1.68

Gravity: 1.3 G

Time & Orbit

Eccentricity (e): 0.128

Orbit Range: 0.64 AU - 0.82 AU

Year: 229 Days

Day: 24.3 Hours

Environment

Temp: 144 °C

Axial Tilt: 14.2 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 0.81 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.24

Radius: 1.6

Gravity: 1.27 G

Time & Orbit

Eccentricity (e): 0.037

Orbit Range: 0.78 AU - 0.84 AU

Year: 268 Days

Day: 28.8 Hours

Environment

Temp: 97 °C

Axial Tilt: 10.5 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 3 - Terrestrial

Semi-Major Axis: 1.28 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.81

Radius: 1.71

Gravity: 1.3 G

Time & Orbit

Eccentricity (e): 0.228

Orbit Range: 0.99 AU - 1.57 AU

Year: 532 Days

Day: 46.4 Hours

Environment

Temp: 9 °C

Axial Tilt: 37.9 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Planet 4 - Terrestrial

Semi-Major Axis: 1.58 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.51

Radius: 1.65

Gravity: 1.29 G

Time & Orbit

Eccentricity (e): 0.105

Orbit Range: 1.41 AU - 1.75 AU

Year: 729 Days

Day: 20.4 Hours

Environment

Temp: -37 °C

Axial Tilt: 32.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 101,546,810 km

• M1: 1,068,578 km (0.089 R)

Planet 5 - Terrestrial

Semi-Major Axis: 2.26 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.47

Radius: 1.64

Gravity: 1.29 G

Time & Orbit

Eccentricity (e): 0.124

Orbit Range: 1.98 AU - 2.54 AU

Year: 1247 Days

Day: 23.7 Hours

Environment

Temp: -73 °C

Axial Tilt: 37.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 6 - Terrestrial

Semi-Major Axis: 3.98 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.13

Radius: 0.44

Gravity: 0.67 G

Time & Orbit

Eccentricity (e): 0.131

Orbit Range: 3.46 AU - 4.5 AU

Year: 2915 Days

Day: 38.1 Hours

Environment

Temp: -130 °C

Axial Tilt: 41.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 7 - Terrestrial

Semi-Major Axis: 4.59 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.32

Radius: 1.8

Gravity: 1.33 G

Time & Orbit

Eccentricity (e): 0.193

Orbit Range: 3.7 AU - 5.48 AU

Year: 3610 Days

Day: 16.7 Hours

Environment

Temp: -127 °C

Axial Tilt: 25.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Asteroid Belt

Center: 9.68 AU

Composition

Type: Far Outer (Icy/Cometary)

A dense region of planetesimals and debris.

Boundary

Planet 8 - Ice Giant

Semi-Major Axis: 14.77 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 456.4

Radius: 3.8

Gravity: 31.61 G

Time & Orbit

Eccentricity (e): 0.141

Orbit Range: 12.69 AU - 16.85 AU

Year: 20837 Days

Day: 24.4 Hours

Environment

Temp: -190 °C

Axial Tilt: 31.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (30)

Outer Limit: 101,546,810 km

• M1: 50,414 km (0.043 R)
• M2: 180,565 km (0.052 R)
• M3: 419,323 km (0.085 R)
• M4: 794,065 km (0.119 R)
• M5: 1,711,848 km (0.111 R)
• M6: 1,853,368 km (0.102 R)
• M7: 2,262,817 km (0.12 R)
• M8: 2,433,658 km (0.12 R)
• M9: 2,590,287 km (0.031 R)
• M10: 3,762,835 km (0.082 R)
• M11: 4,003,239 km (0.111 R)
• M12: 4,285,680 km (0.072 R)
• M13: 4,481,204 km (0.07 R)
• M14: 4,996,270 km (0.079 R)
• M15: 5,176,535 km (0.09 R)
• M16: 6,604,297 km (0.103 R)
• M17: 7,930,482 km (0.069 R)
• M18: 9,923,425 km (0.082 R)
• M19: 11,778,289 km (0.104 R)
• M20: 16,392,336 km (0.117 R)
• M21: 16,951,384 km (0.071 R)
• M22: 20,391,536 km (0.07 R)
• M23: 21,888,712 km (0.115 R)
• M24: 23,357,464 km (0.117 R)
• M25: 24,994,962 km (0.077 R)
• M26: 36,453,560 km (0.103 R)
• M27: 41,520,141 km (0.062 R)
• M28: 44,527,806 km (0.117 R)
• M29: 59,680,275 km (0.098 R)
• M30: 63,892,652 km (0.108 R)

Planet 9 - Ice Giant

Semi-Major Axis: 15.66 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 167

Radius: 4.1

Gravity: 9.93 G

Time & Orbit

Eccentricity (e): 0.204

Orbit Range: 12.47 AU - 18.85 AU

Year: 22749 Days

Day: 15.3 Hours

Environment

Temp: -203 °C

Axial Tilt: 15.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (26)

Outer Limit: 101,546,810 km

• M1: 51,162 km (0.098 R)
• M2: 258,954 km (0.058 R)
• M3: 458,817 km (0.098 R)
• M4: 949,946 km (0.081 R)
• M5: 1,300,005 km (0.083 R)
• M6: 1,978,881 km (0.033 R)
• M7: 2,567,099 km (0.071 R)
• M8: 3,239,991 km (0.117 R)
• M9: 4,488,834 km (0.107 R)
• M10: 4,641,424 km (0.108 R)
• M11: 7,036,635 km (0.12 R)
• M12: 7,624,255 km (0.049 R)
• M13: 9,235,724 km (0.105 R)
• M14: 10,950,415 km (0.089 R)
• M15: 12,562,780 km (0.07 R)
• M16: 12,927,799 km (0.078 R)
• M17: 16,536,997 km (0.058 R)
• M18: 19,444,731 km (0.032 R)
• M19: 21,446,500 km (0.076 R)
• M20: 21,792,969 km (0.064 R)
• M21: 28,476,403 km (0.119 R)
• M22: 29,959,068 km (0.113 R)
• M23: 32,505,523 km (0.103 R)
• M24: 33,192,776 km (0.053 R)
• M25: 39,689,512 km (0.036 R)
• M26: 46,984,203 km (0.071 R)

Planet 10 - Ice Giant

Semi-Major Axis: 17.95 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 835.7

Radius: 7

Gravity: 17.06 G

Time & Orbit

Eccentricity (e): 0.233

Orbit Range: 13.77 AU - 22.13 AU

Year: 27917 Days

Day: 17.3 Hours

Environment

Temp: -202 °C

Axial Tilt: 148.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (32)

Outer Limit: 101,546,810 km

• M1: 87,216 km (0.08 R)
• M2: 353,649 km (0.092 R)
• M3: 739,911 km (0.116 R)
• M4: 3,537,990 km (0.06 R)
• M5: 5,566,836 km (0.098 R)
• M6: 7,766,224 km (0.096 R)
• M7: 8,323,775 km (0.084 R)
• M8: 10,420,539 km (0.071 R)
• M9: 11,307,654 km (0.111 R)
• M10: 12,693,529 km (0.104 R)
• M11: 13,309,723 km (0.099 R)
• M12: 13,784,696 km (0.106 R)
• M13: 15,623,553 km (0.083 R)
• M14: 21,566,927 km (0.074 R)
• M15: 22,222,315 km (0.086 R)
• M16: 26,311,872 km (0.07 R)
• M17: 26,934,199 km (0.063 R)
• M18: 29,789,873 km (0.116 R)
• M19: 35,790,243 km (0.06 R)
• M20: 62,616,134 km (0.108 R)
• M21: 62,836,940 km (0.055 R)
• M22: 64,621,194 km (0.107 R)
• M23: 66,438,958 km (0.108 R)
• M24: 71,854,400 km (0.026 R)
• M25: 72,581,745 km (0.053 R)
• M26: 73,069,434 km (0.115 R)
• M27: 76,796,516 km (0.103 R)
• M28: 80,909,709 km (0.113 R)
• M29: 92,400,471 km (0.041 R)
• M30: 94,705,924 km (0.028 R)
• M31: 99,430,973 km (0.11 R)
• M32: 100,032,506 km (0.027 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: 280 - 12,557 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit