🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.53 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 1.06 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.18

Radius: 0.5

Gravity: 0.72 G

Time & Orbit

Eccentricity (e): 0.009

Orbit Range: 1.05 AU - 1.07 AU

Year: 401 Days

Day: 45.5 Hours

Environment

Temp: 5 °C

Axial Tilt: 43.1 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Planet 2 - Terrestrial

Semi-Major Axis: 1.12 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.85

Radius: 1.88

Gravity: 1.37 G

Time & Orbit

Eccentricity (e): 0.042

Orbit Range: 1.07 AU - 1.17 AU

Year: 435 Days

Day: 16.9 Hours

Environment

Temp: 16 °C

Axial Tilt: 45.3 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Satellites (2)

Outer Limit: 36,188,515 km

• M1: 148,401 km (0.076 R)
• M2: 502,050 km (0.08 R)

Planet 3 - Terrestrial

Semi-Major Axis: 1.96 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.87

Radius: 1.72

Gravity: 1.31 G

Time & Orbit

Eccentricity (e): 0.235

Orbit Range: 1.5 AU - 2.42 AU

Year: 1007 Days

Day: 37.1 Hours

Environment

Temp: -67 °C

Axial Tilt: 38.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 36,188,515 km

• M1: 73,004 km (0.042 R)

Planet 4 - Terrestrial

Semi-Major Axis: 2.67 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.87

Radius: 1.52

Gravity: 1.24 G

Time & Orbit

Eccentricity (e): 0.034

Orbit Range: 2.58 AU - 2.76 AU

Year: 1602 Days

Day: 46.9 Hours

Environment

Temp: -90 °C

Axial Tilt: 20.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Asteroid Belt

Center: 3.73 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 5 - Gas Giant

Semi-Major Axis: 4.78 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 146.3

Radius: 12.1

Gravity: 1 G

Time & Orbit

Eccentricity (e): 0.224

Orbit Range: 3.71 AU - 5.85 AU

Year: 3836 Days

Day: 13.6 Hours

Environment

Temp: -143 °C

Axial Tilt: 25.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 36,188,515 km

• M1: 150,645 km (0.101 R)
• M2: 688,749 km (0.089 R)
• M3: 1,324,689 km (0.101 R)
• M4: 1,827,637 km (0.102 R)
• M5: 2,456,696 km (0.079 R)
• M6: 2,880,507 km (0.103 R)
• M7: 3,702,697 km (0.088 R)
• M8: 5,309,528 km (0.075 R)
• M9: 6,268,749 km (0.069 R)
• M10: 6,776,933 km (0.061 R)
• M11: 8,438,517 km (0.072 R)
• M12: 11,548,507 km (0.057 R)
• M13: 12,042,479 km (0.112 R)
• M14: 13,031,770 km (0.114 R)
• M15: 13,650,955 km (0.072 R)

Planet 6 - Gas Giant

Semi-Major Axis: 4.85 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 445.8

Radius: 12.5

Gravity: 2.85 G

Time & Orbit

Eccentricity (e): 0.147

Orbit Range: 4.14 AU - 5.56 AU

Year: 3921 Days

Day: 12.3 Hours

Environment

Temp: -146 °C

Axial Tilt: 175.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 36,188,515 km

• M1: 155,582 km (0.112 R)
• M2: 566,677 km (0.102 R)
• M3: 1,274,723 km (0.092 R)
• M4: 2,076,568 km (0.071 R)
• M5: 5,524,350 km (0.051 R)
• M6: 6,279,969 km (0.081 R)
• M7: 7,164,840 km (0.074 R)
• M8: 10,086,936 km (0.099 R)
• M9: 10,762,968 km (0.072 R)
• M10: 11,725,481 km (0.098 R)
• M11: 12,338,832 km (0.078 R)
• M12: 14,112,465 km (0.09 R)
• M13: 14,506,506 km (0.107 R)
• M14: 15,523,921 km (0.083 R)
• M15: 16,263,981 km (0.108 R)
• M16: 16,806,872 km (0.116 R)
• M17: 17,418,129 km (0.107 R)
• M18: 19,220,634 km (0.105 R)
• M19: 20,012,306 km (0.049 R)
• M20: 21,856,847 km (0.112 R)

Planet 7 - Gas Giant

Semi-Major Axis: 5.05 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 985.2

Radius: 14.6

Gravity: 4.62 G

Time & Orbit

Eccentricity (e): 0.232

Orbit Range: 3.88 AU - 6.22 AU

Year: 4166 Days

Day: 7.4 Hours

Environment

Temp: -138 °C

Axial Tilt: 39.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 36,188,515 km

• M1: 182,210 km (0.068 R)
• M2: 833,111 km (0.106 R)
• M3: 1,701,077 km (0.092 R)
• M4: 2,789,551 km (0.056 R)
• M5: 4,448,442 km (0.077 R)
• M6: 4,984,451 km (0.103 R)
• M7: 5,534,822 km (0.088 R)
• M8: 7,718,353 km (0.12 R)
• M9: 8,727,839 km (0.097 R)
• M10: 9,244,400 km (0.059 R)
• M11: 12,387,003 km (0.086 R)
• M12: 16,301,680 km (0.11 R)
• M13: 17,272,271 km (0.056 R)
• M14: 21,615,845 km (0.048 R)

Planet 8 - Gas Giant

Semi-Major Axis: 5.84 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 33

Radius: 14.4

Gravity: 0.16 G

Time & Orbit

Eccentricity (e): 0.156

Orbit Range: 4.93 AU - 6.75 AU

Year: 5181 Days

Day: 6.7 Hours

Environment

Temp: -158 °C

Axial Tilt: 30 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 36,188,515 km

• M1: 179,368 km (0.048 R)
• M2: 970,441 km (0.063 R)
• M3: 4,868,513 km (0.064 R)
• M4: 5,976,136 km (0.099 R)
• M5: 6,835,276 km (0.026 R)
• M6: 9,199,820 km (0.078 R)
• M7: 10,377,604 km (0.055 R)

Planet 9 - Gas Giant

Semi-Major Axis: 7.72 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 303.6

Radius: 13.3

Gravity: 1.72 G

Time & Orbit

Eccentricity (e): 0.188

Orbit Range: 6.27 AU - 9.17 AU

Year: 7874 Days

Day: 10.3 Hours

Environment

Temp: -157 °C

Axial Tilt: 31.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 36,188,515 km

• M1: 165,455 km (0.064 R)
• M2: 593,904 km (0.087 R)
• M3: 1,209,948 km (0.071 R)
• M4: 1,672,654 km (0.103 R)
• M5: 2,413,014 km (0.09 R)
• M6: 3,066,008 km (0.12 R)
• M7: 3,572,098 km (0.118 R)
• M8: 4,523,840 km (0.058 R)
• M9: 5,350,817 km (0.077 R)
• M10: 6,276,079 km (0.108 R)
• M11: 7,733,163 km (0.09 R)
• M12: 10,616,213 km (0.114 R)
• M13: 12,174,424 km (0.118 R)
• M14: 14,151,959 km (0.11 R)
• M15: 14,594,170 km (0.105 R)
• M16: 15,623,104 km (0.094 R)
• M17: 16,215,212 km (0.057 R)
• M18: 21,797,307 km (0.073 R)
• M19: 22,837,910 km (0.066 R)
• M20: 23,911,275 km (0.076 R)
• M21: 24,698,309 km (0.119 R)
• M22: 26,825,741 km (0.054 R)
• M23: 27,589,886 km (0.081 R)
• M24: 30,977,231 km (0.097 R)

Planet 10 - Ice Giant

Semi-Major Axis: 19.68 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 28.7

Radius: 6.8

Gravity: 0.62 G

Time & Orbit

Eccentricity (e): 0.027

Orbit Range: 19.15 AU - 20.21 AU

Year: 32049 Days

Day: 15.6 Hours

Environment

Temp: -194 °C

Axial Tilt: 55.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 36,188,515 km

• M1: 86,468 km (0.109 R)
• M2: 356,342 km (0.12 R)
• M3: 920,326 km (0.081 R)
• M4: 2,097,063 km (0.113 R)
• M5: 3,644,803 km (0.113 R)
• M6: 4,437,073 km (0.063 R)
• M7: 5,582,245 km (0.098 R)
• M8: 6,424,929 km (0.072 R)
• M9: 7,461,942 km (0.08 R)
• M10: 9,069,371 km (0.12 R)
• M11: 18,362,540 km (0.059 R)

Kuiper Belt

Range: 30 - 53 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 531 - 11,117 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit