🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.32 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.64 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.37

Radius: 1.13

Gravity: 1.07 G

Time & Orbit

Eccentricity (e): 0.224

Orbit Range: 0.5 AU - 0.78 AU

Year: 336 Days

Day: 41.8 Hours

Environment

Temp: -138 °C

Axial Tilt: 38.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.75 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 234.8

Radius: 11.6

Gravity: 1.74 G

Time & Orbit

Eccentricity (e): 0.233

Orbit Range: 0.58 AU - 0.92 AU

Year: 426 Days

Day: 12.5 Hours

Environment

Temp: -145 °C

Axial Tilt: 37.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 14,697,686 km

• M1: 144,362 km (0.102 R)
• M2: 564,732 km (0.078 R)
• M3: 1,169,556 km (0.108 R)
• M4: 1,750,594 km (0.062 R)
• M5: 2,196,097 km (0.048 R)
• M6: 2,603,302 km (0.105 R)
• M7: 3,178,656 km (0.083 R)
• M8: 3,826,115 km (0.055 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.77 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 580.5

Radius: 14.9

Gravity: 2.61 G

Time & Orbit

Eccentricity (e): 0.149

Orbit Range: 0.66 AU - 0.88 AU

Year: 443 Days

Day: 9.8 Hours

Environment

Temp: -144 °C

Axial Tilt: 22.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (5)

Outer Limit: 14,697,686 km

• M1: 185,352 km (0.076 R)
• M2: 901,477 km (0.083 R)
• M3: 1,559,558 km (0.108 R)
• M4: 3,160,405 km (0.081 R)
• M5: 3,981,847 km (0.106 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.21 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 108.9

Radius: 14.5

Gravity: 0.52 G

Time & Orbit

Eccentricity (e): 0.15

Orbit Range: 1.03 AU - 1.39 AU

Year: 873 Days

Day: 6.6 Hours

Environment

Temp: -174 °C

Axial Tilt: 5.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (5)

Outer Limit: 14,697,686 km

• M1: 181,911 km (0.074 R)
• M2: 834,307 km (0.069 R)
• M3: 1,937,442 km (0.056 R)
• M4: 2,583,555 km (0.108 R)
• M5: 4,145,955 km (0.107 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.21 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 804.5

Radius: 11.7

Gravity: 5.88 G

Time & Orbit

Eccentricity (e): 0.127

Orbit Range: 1.06 AU - 1.36 AU

Year: 873 Days

Day: 9.5 Hours

Environment

Temp: -174 °C

Axial Tilt: 33.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 14,697,686 km

• M1: 145,559 km (0.101 R)
• M2: 754,572 km (0.062 R)
• M3: 1,271,432 km (0.118 R)
• M4: 1,759,570 km (0.076 R)
• M5: 2,826,652 km (0.084 R)
• M6: 3,325,561 km (0.115 R)
• M7: 4,008,176 km (0.105 R)
• M8: 4,640,526 km (0.099 R)
• M9: 5,672,751 km (0.115 R)
• M10: 6,874,920 km (0.087 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.73 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 516.5

Radius: 8.9

Gravity: 6.52 G

Time & Orbit

Eccentricity (e): 0.228

Orbit Range: 1.34 AU - 2.12 AU

Year: 1493 Days

Day: 8.9 Hours

Environment

Temp: -189 °C

Axial Tilt: 1.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 14,697,686 km

• M1: 111,151 km (0.077 R)
• M2: 498,161 km (0.113 R)
• M3: 1,139,936 km (0.052 R)
• M4: 1,447,808 km (0.107 R)
• M5: 1,901,539 km (0.03 R)
• M6: 2,546,305 km (0.112 R)
• M7: 2,872,130 km (0.106 R)
• M8: 3,467,230 km (0.105 R)
• M9: 4,142,215 km (0.109 R)
• M10: 4,501,849 km (0.059 R)
• M11: 6,504,665 km (0.117 R)
• M12: 6,794,137 km (0.101 R)
• M13: 8,121,968 km (0.101 R)
• M14: 9,896,498 km (0.084 R)
• M15: 10,410,217 km (0.109 R)

Planet 7 - Gas Giant

Semi-Major Axis: 2.88 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 959.1

Radius: 10.8

Gravity: 8.22 G

Time & Orbit

Eccentricity (e): 0.101

Orbit Range: 2.59 AU - 3.17 AU

Year: 3206 Days

Day: 12.8 Hours

Environment

Temp: -210 °C

Axial Tilt: 17.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 14,697,686 km

• M1: 135,087 km (0.052 R)
• M2: 631,602 km (0.109 R)
• M3: 1,151,455 km (0.107 R)
• M4: 1,662,481 km (0.086 R)
• M5: 3,055,985 km (0.089 R)
• M6: 3,708,681 km (0.108 R)
• M7: 4,545,830 km (0.096 R)
• M8: 5,558,309 km (0.097 R)
• M9: 6,932,964 km (0.098 R)
• M10: 7,482,138 km (0.078 R)
• M11: 7,887,099 km (0.113 R)
• M12: 8,449,886 km (0.082 R)
• M13: 9,499,166 km (0.048 R)
• M14: 10,633,117 km (0.089 R)
• M15: 12,879,180 km (0.104 R)
• M16: 14,890,673 km (0.089 R)
• M17: 16,249,470 km (0.086 R)
• M18: 18,531,735 km (0.117 R)
• M19: 19,337,918 km (0.067 R)
• M20: 22,309,381 km (0.098 R)
• M21: 22,938,290 km (0.118 R)
• M22: 24,304,717 km (0.079 R)

Planet 8 - Gas Giant

Semi-Major Axis: 3.07 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 158.6

Radius: 11.9

Gravity: 1.12 G

Time & Orbit

Eccentricity (e): 0.055

Orbit Range: 2.9 AU - 3.24 AU

Year: 3529 Days

Day: 13.6 Hours

Environment

Temp: -197 °C

Axial Tilt: 38.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 14,697,686 km

• M1: 148,102 km (0.104 R)
• M2: 750,682 km (0.109 R)
• M3: 1,121,685 km (0.109 R)
• M4: 1,777,223 km (0.058 R)
• M5: 3,353,984 km (0.026 R)
• M6: 4,015,955 km (0.108 R)
• M7: 4,388,304 km (0.089 R)
• M8: 5,831,325 km (0.111 R)
• M9: 8,140,967 km (0.11 R)
• M10: 8,957,771 km (0.119 R)
• M11: 10,439,687 km (0.085 R)
• M12: 11,700,797 km (0.086 R)
• M13: 12,860,331 km (0.09 R)

Kuiper Belt

Range: 30 - 46 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 276 - 11,648 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit