🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.26 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.52 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.77

Radius: 1.5

Gravity: 1.23 G

Time & Orbit

Eccentricity (e): 0.124

Orbit Range: 0.46 AU - 0.58 AU

Year: 242 Days

Day: 30.2 Hours

Environment

Temp: -127 °C

Axial Tilt: 29.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 89,675,477 km

• M1: 137,181 km (0.091 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.58 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.49

Radius: 1.82

Gravity: 1.36 G

Time & Orbit

Eccentricity (e): 0.08

Orbit Range: 0.53 AU - 0.63 AU

Year: 285 Days

Day: 37.3 Hours

Environment

Temp: -134 °C

Axial Tilt: 44.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 89,675,477 km

• M1: 64,626 km (0.061 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.99 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 435.3

Radius: 11.5

Gravity: 3.29 G

Time & Orbit

Eccentricity (e): 0.239

Orbit Range: 0.75 AU - 1.23 AU

Year: 636 Days

Day: 10.4 Hours

Environment

Temp: -156 °C

Axial Tilt: 38.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 89,675,477 km

• M1: 144,362 km (0.051 R)
• M2: 532,868 km (0.098 R)
• M3: 1,072,467 km (0.114 R)
• M4: 1,586,635 km (0.038 R)
• M5: 2,412,864 km (0.088 R)
• M6: 2,951,566 km (0.055 R)
• M7: 3,321,970 km (0.044 R)
• M8: 3,977,359 km (0.069 R)
• M9: 4,358,085 km (0.079 R)
• M10: 5,615,306 km (0.062 R)
• M11: 6,394,262 km (0.064 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.17 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 348.1

Radius: 13.3

Gravity: 1.97 G

Time & Orbit

Eccentricity (e): 0.193

Orbit Range: 0.94 AU - 1.4 AU

Year: 817 Days

Day: 10 Hours

Environment

Temp: -168 °C

Axial Tilt: 49.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 89,675,477 km

• M1: 165,455 km (0.036 R)
• M2: 626,067 km (0.109 R)
• M3: 1,055,712 km (0.039 R)
• M4: 1,647,821 km (0.085 R)
• M5: 2,089,134 km (0.09 R)
• M6: 2,781,174 km (0.071 R)
• M7: 3,569,704 km (0.087 R)
• M8: 4,533,115 km (0.09 R)
• M9: 5,381,634 km (0.119 R)
• M10: 6,180,038 km (0.11 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.34 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 344.6

Radius: 12.2

Gravity: 2.32 G

Time & Orbit

Eccentricity (e): 0.082

Orbit Range: 1.23 AU - 1.45 AU

Year: 1002 Days

Day: 11.5 Hours

Environment

Temp: -168 °C

Axial Tilt: 36.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 89,675,477 km

• M1: 180,565 km (0.096 R)
• M2: 634,145 km (0.095 R)
• M3: 1,016,518 km (0.08 R)
• M4: 1,501,663 km (0.11 R)
• M5: 1,921,136 km (0.107 R)
• M6: 3,052,245 km (0.109 R)
• M7: 4,699,617 km (0.07 R)
• M8: 6,133,214 km (0.079 R)
• M9: 7,494,105 km (0.113 R)
• M10: 8,221,600 km (0.116 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.86 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 464.2

Radius: 10.7

Gravity: 4.05 G

Time & Orbit

Eccentricity (e): 0.245

Orbit Range: 1.4 AU - 2.32 AU

Year: 1638 Days

Day: 8.4 Hours

Environment

Temp: -194 °C

Axial Tilt: 42.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 89,675,477 km

• M1: 133,142 km (0.11 R)
• M2: 526,585 km (0.116 R)
• M3: 1,050,327 km (0.086 R)
• M4: 1,591,273 km (0.093 R)
• M5: 1,927,269 km (0.088 R)
• M6: 2,566,202 km (0.036 R)
• M7: 3,326,159 km (0.073 R)
• M8: 4,337,590 km (0.067 R)
• M9: 4,826,626 km (0.111 R)
• M10: 5,694,293 km (0.104 R)
• M11: 6,566,000 km (0.077 R)
• M12: 6,983,827 km (0.082 R)
• M13: 7,367,097 km (0.095 R)
• M14: 8,954,031 km (0.095 R)
• M15: 10,131,516 km (0.077 R)
• M16: 10,724,073 km (0.116 R)
• M17: 11,304,662 km (0.09 R)
• M18: 12,014,504 km (0.095 R)

Planet 7 - Gas Giant

Semi-Major Axis: 2.5 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 158.7

Radius: 13.6

Gravity: 0.86 G

Time & Orbit

Eccentricity (e): 0.229

Orbit Range: 1.93 AU - 3.07 AU

Year: 2552 Days

Day: 14.4 Hours

Environment

Temp: -190 °C

Axial Tilt: 36.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 89,675,477 km

• M1: 169,195 km (0.09 R)
• M2: 592,557 km (0.114 R)
• M3: 1,839,455 km (0.079 R)
• M4: 2,518,779 km (0.115 R)
• M5: 3,526,022 km (0.058 R)
• M6: 4,365,864 km (0.027 R)
• M7: 5,254,326 km (0.071 R)
• M8: 7,164,092 km (0.119 R)
• M9: 7,699,952 km (0.069 R)
• M10: 8,126,156 km (0.089 R)
• M11: 9,055,309 km (0.108 R)
• M12: 10,825,650 km (0.093 R)
• M13: 11,259,933 km (0.073 R)
• M14: 11,705,734 km (0.114 R)

Planet 8 - Gas Giant

Semi-Major Axis: 2.72 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 177.5

Radius: 9.7

Gravity: 1.89 G

Time & Orbit

Eccentricity (e): 0.158

Orbit Range: 2.29 AU - 3.15 AU

Year: 2896 Days

Day: 10.2 Hours

Environment

Temp: -207 °C

Axial Tilt: 36.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 89,675,477 km

• M1: 120,576 km (0.08 R)
• M2: 482,154 km (0.117 R)
• M3: 1,041,052 km (0.106 R)
• M4: 1,377,647 km (0.058 R)
• M5: 2,173,507 km (0.092 R)
• M6: 3,932,030 km (0.12 R)
• M7: 5,492,785 km (0.113 R)
• M8: 6,315,573 km (0.117 R)
• M9: 10,343,047 km (0.098 R)
• M10: 11,486,873 km (0.111 R)
• M11: 12,483,793 km (0.097 R)

Planet 9 - Gas Giant

Semi-Major Axis: 3.87 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 565.2

Radius: 12.9

Gravity: 3.4 G

Time & Orbit

Eccentricity (e): 0.245

Orbit Range: 2.92 AU - 4.82 AU

Year: 4916 Days

Day: 13.3 Hours

Environment

Temp: -218 °C

Axial Tilt: 43.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 89,675,477 km

• M1: 160,369 km (0.043 R)
• M2: 860,786 km (0.064 R)
• M3: 1,293,872 km (0.102 R)
• M4: 1,876,256 km (0.089 R)
• M5: 2,358,560 km (0.091 R)
• M6: 2,977,895 km (0.116 R)
• M7: 3,537,242 km (0.106 R)
• M8: 5,791,682 km (0.082 R)
• M9: 7,155,416 km (0.093 R)
• M10: 9,187,852 km (0.066 R)
• M11: 9,792,228 km (0.087 R)
• M12: 10,770,299 km (0.069 R)
• M13: 14,576,368 km (0.049 R)
• M14: 15,399,455 km (0.088 R)
• M15: 17,807,682 km (0.056 R)
• M16: 18,368,225 km (0.094 R)
• M17: 19,069,241 km (0.105 R)
• M18: 21,003,092 km (0.069 R)
• M19: 23,805,808 km (0.087 R)
• M20: 26,045,288 km (0.12 R)

Planet 10 - Ice Giant

Semi-Major Axis: 10.89 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 833.1

Radius: 6.8

Gravity: 18.02 G

Time & Orbit

Eccentricity (e): 0.126

Orbit Range: 9.52 AU - 12.26 AU

Year: 23204 Days

Day: 16.9 Hours

Environment

Temp: -229 °C

Axial Tilt: 37.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 89,675,477 km

• M1: 87,515 km (0.072 R)
• M2: 556,504 km (0.106 R)
• M3: 1,051,523 km (0.07 R)
• M4: 1,370,167 km (0.095 R)
• M5: 2,009,399 km (0.069 R)
• M6: 2,805,558 km (0.056 R)
• M7: 3,392,730 km (0.084 R)
• M8: 4,477,015 km (0.061 R)
• M9: 5,197,180 km (0.117 R)
• M10: 5,775,525 km (0.104 R)
• M11: 6,124,686 km (0.088 R)
• M12: 9,326,978 km (0.062 R)
• M13: 11,083,108 km (0.096 R)
• M14: 11,350,738 km (0.044 R)
• M15: 13,650,357 km (0.076 R)
• M16: 19,051,738 km (0.118 R)
• M17: 28,130,683 km (0.112 R)
• M18: 31,078,359 km (0.089 R)
• M19: 36,095,423 km (0.09 R)
• M20: 37,579,135 km (0.067 R)
• M21: 42,600,088 km (0.102 R)
• M22: 47,520,661 km (0.031 R)
• M23: 60,309,484 km (0.09 R)
• M24: 85,443,572 km (0.084 R)

Kuiper Belt

Range: 30 - 50 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 309 - 20,183 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit