🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.31 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.62 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.62

Radius: 0.83

Gravity: 0.9 G

Time & Orbit

Eccentricity (e): 0.072

Orbit Range: 0.58 AU - 0.66 AU

Year: 315 Days

Day: 29.3 Hours

Environment

Temp: -128 °C

Axial Tilt: 15.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.8 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 419.1

Radius: 8.2

Gravity: 6.23 G

Time & Orbit

Eccentricity (e): 0.06

Orbit Range: 0.75 AU - 0.85 AU

Year: 462 Days

Day: 9.1 Hours

Environment

Temp: -149 °C

Axial Tilt: 6.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 45,169,926 km

• M1: 105,915 km (0.112 R)
• M2: 428,299 km (0.025 R)
• M3: 888,611 km (0.062 R)
• M4: 1,217,278 km (0.108 R)
• M5: 1,539,063 km (0.063 R)
• M6: 1,804,300 km (0.106 R)
• M7: 2,357,214 km (0.096 R)
• M8: 2,722,382 km (0.118 R)
• M9: 3,157,861 km (0.089 R)
• M10: 3,626,851 km (0.034 R)
• M11: 4,562,436 km (0.039 R)
• M12: 4,878,237 km (0.094 R)
• M13: 5,223,958 km (0.041 R)

Planet 3 - Gas Giant

Semi-Major Axis: 2.42 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 559.4

Radius: 11.3

Gravity: 4.38 G

Time & Orbit

Eccentricity (e): 0.028

Orbit Range: 2.35 AU - 2.49 AU

Year: 2431 Days

Day: 8.2 Hours

Environment

Temp: -189 °C

Axial Tilt: 177.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 45,169,926 km

• M1: 140,622 km (0.082 R)
• M2: 562,638 km (0.059 R)
• M3: 1,010,234 km (0.068 R)
• M4: 1,459,926 km (0.051 R)
• M5: 1,814,473 km (0.113 R)
• M6: 2,761,577 km (0.074 R)
• M7: 3,842,122 km (0.087 R)
• M8: 4,326,071 km (0.102 R)
• M9: 5,369,965 km (0.079 R)
• M10: 6,874,321 km (0.11 R)
• M11: 7,443,092 km (0.102 R)
• M12: 9,170,349 km (0.111 R)
• M13: 9,545,541 km (0.092 R)
• M14: 10,770,897 km (0.038 R)
• M15: 11,460,693 km (0.118 R)
• M16: 11,976,955 km (0.088 R)
• M17: 13,141,724 km (0.085 R)
• M18: 13,974,087 km (0.115 R)
• M19: 15,407,234 km (0.094 R)
• M20: 16,936,125 km (0.048 R)

Planet 4 - Gas Giant

Semi-Major Axis: 3.16 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 386.7

Radius: 10.9

Gravity: 3.25 G

Time & Orbit

Eccentricity (e): 0.161

Orbit Range: 2.65 AU - 3.67 AU

Year: 3627 Days

Day: 7.9 Hours

Environment

Temp: -204 °C

Axial Tilt: 19.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 45,169,926 km

• M1: 135,536 km (0.089 R)
• M2: 538,253 km (0.116 R)
• M3: 915,240 km (0.072 R)
• M4: 1,397,244 km (0.11 R)
• M5: 1,817,165 km (0.104 R)
• M6: 2,293,934 km (0.066 R)
• M7: 2,759,034 km (0.051 R)
• M8: 3,446,885 km (0.108 R)
• M9: 4,019,994 km (0.115 R)
• M10: 4,523,391 km (0.074 R)
• M11: 5,431,001 km (0.047 R)
• M12: 5,784,950 km (0.108 R)
• M13: 6,262,915 km (0.047 R)
• M14: 7,856,731 km (0.096 R)
• M15: 9,343,135 km (0.099 R)
• M16: 11,008,907 km (0.028 R)
• M17: 11,870,142 km (0.119 R)
• M18: 12,599,881 km (0.058 R)
• M19: 15,769,560 km (0.043 R)
• M20: 16,128,894 km (0.088 R)
• M21: 19,553,339 km (0.107 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.22 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 18.5

Radius: 12.6

Gravity: 0.12 G

Time & Orbit

Eccentricity (e): 0.176

Orbit Range: 2.65 AU - 3.79 AU

Year: 3731 Days

Day: 12.7 Hours

Environment

Temp: -215 °C

Axial Tilt: 11.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 45,169,926 km

• M1: 156,779 km (0.106 R)
• M2: 749,037 km (0.112 R)
• M3: 1,472,641 km (0.116 R)
• M4: 2,553,636 km (0.068 R)
• M5: 3,006,768 km (0.029 R)
• M6: 3,500,590 km (0.085 R)
• M7: 4,283,436 km (0.074 R)
• M8: 6,236,137 km (0.045 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.51 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 712.2

Radius: 10.1

Gravity: 6.98 G

Time & Orbit

Eccentricity (e): 0.236

Orbit Range: 2.68 AU - 4.34 AU

Year: 4246 Days

Day: 14.6 Hours

Environment

Temp: -214 °C

Axial Tilt: 4.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 45,169,926 km

• M1: 126,410 km (0.093 R)
• M2: 440,865 km (0.045 R)
• M3: 791,522 km (0.117 R)
• M4: 1,306,438 km (0.101 R)
• M5: 1,647,671 km (0.092 R)
• M6: 2,063,254 km (0.101 R)
• M7: 2,499,631 km (0.098 R)
• M8: 2,924,638 km (0.088 R)
• M9: 3,538,887 km (0.042 R)
• M10: 3,920,960 km (0.088 R)
• M11: 4,283,585 km (0.069 R)
• M12: 4,743,449 km (0.067 R)
• M13: 7,317,430 km (0.1 R)
• M14: 8,673,685 km (0.076 R)
• M15: 12,159,764 km (0.027 R)
• M16: 12,984,347 km (0.101 R)
• M17: 14,317,115 km (0.071 R)
• M18: 15,126,290 km (0.069 R)
• M19: 15,682,644 km (0.093 R)
• M20: 18,481,471 km (0.079 R)
• M21: 20,164,895 km (0.118 R)
• M22: 27,186,870 km (0.096 R)

Planet 7 - Ice Giant

Semi-Major Axis: 8.86 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 197.7

Radius: 5.6

Gravity: 6.3 G

Time & Orbit

Eccentricity (e): 0.05

Orbit Range: 8.42 AU - 9.3 AU

Year: 17028 Days

Day: 18.1 Hours

Environment

Temp: -218 °C

Axial Tilt: 10.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 45,169,926 km

• M1: 134,788 km (0.11 R)
• M2: 355,145 km (0.083 R)
• M3: 597,195 km (0.106 R)
• M4: 808,726 km (0.042 R)
• M5: 1,102,686 km (0.093 R)
• M6: 1,349,223 km (0.049 R)
• M7: 1,765,255 km (0.085 R)
• M8: 2,372,622 km (0.07 R)
• M9: 8,643,615 km (0.06 R)
• M10: 9,285,241 km (0.056 R)
• M11: 11,508,714 km (0.069 R)
• M12: 25,857,394 km (0.07 R)
• M13: 32,402,749 km (0.05 R)
• M14: 38,251,128 km (0.115 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: 441 - 15,042 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit