🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.28 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.56 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.92

Radius: 1.89

Gravity: 1.38 G

Time & Orbit

Eccentricity (e): 0.043

Orbit Range: 0.54 AU - 0.58 AU

Year: 271 Days

Day: 25.5 Hours

Environment

Temp: -129 °C

Axial Tilt: 48.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 36,821,191 km

• M1: 85,720 km (0.104 R)
• M2: 704,008 km (0.115 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.6 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.49

Radius: 1.82

Gravity: 1.36 G

Time & Orbit

Eccentricity (e): 0.085

Orbit Range: 0.55 AU - 0.65 AU

Year: 300 Days

Day: 45 Hours

Environment

Temp: -123 °C

Axial Tilt: 146.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.81 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 615.7

Radius: 13.1

Gravity: 3.59 G

Time & Orbit

Eccentricity (e): 0.01

Orbit Range: 0.8 AU - 0.82 AU

Year: 471 Days

Day: 8.9 Hours

Environment

Temp: -155 °C

Axial Tilt: 67.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 36,821,191 km

• M1: 162,912 km (0.034 R)
• M2: 570,267 km (0.088 R)
• M3: 1,061,397 km (0.085 R)
• M4: 1,609,224 km (0.102 R)
• M5: 2,245,314 km (0.057 R)
• M6: 2,759,034 km (0.092 R)
• M7: 3,167,137 km (0.066 R)
• M8: 3,690,579 km (0.1 R)
• M9: 4,440,364 km (0.077 R)
• M10: 4,943,761 km (0.046 R)
• M11: 5,370,414 km (0.085 R)
• M12: 5,804,697 km (0.114 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.89 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 271.2

Radius: 14.5

Gravity: 1.29 G

Time & Orbit

Eccentricity (e): 0.027

Orbit Range: 0.87 AU - 0.91 AU

Year: 542 Days

Day: 6.5 Hours

Environment

Temp: -155 °C

Axial Tilt: 42.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 36,821,191 km

• M1: 180,265 km (0.085 R)
• M2: 681,867 km (0.092 R)
• M3: 1,219,821 km (0.075 R)
• M4: 1,749,697 km (0.115 R)
• M5: 2,540,920 km (0.099 R)
• M6: 3,071,843 km (0.119 R)
• M7: 3,595,884 km (0.092 R)
• M8: 4,090,455 km (0.105 R)
• M9: 4,897,236 km (0.034 R)

Planet 5 - Gas Giant

Semi-Major Axis: 0.94 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 495.9

Radius: 12.9

Gravity: 2.98 G

Time & Orbit

Eccentricity (e): 0.076

Orbit Range: 0.87 AU - 1.01 AU

Year: 588 Days

Day: 6.2 Hours

Environment

Temp: -155 °C

Axial Tilt: 42.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 36,821,191 km

• M1: 160,967 km (0.106 R)
• M2: 627,563 km (0.118 R)
• M3: 1,048,232 km (0.105 R)
• M4: 2,301,713 km (0.1 R)
• M5: 2,807,653 km (0.084 R)
• M6: 3,461,096 km (0.095 R)
• M7: 4,836,649 km (0.111 R)
• M8: 5,867,528 km (0.113 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.03 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 639

Radius: 8.7

Gravity: 8.44 G

Time & Orbit

Eccentricity (e): 0.126

Orbit Range: 0.9 AU - 1.16 AU

Year: 675 Days

Day: 10.8 Hours

Environment

Temp: -156 °C

Axial Tilt: 8.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 36,821,191 km

• M1: 108,159 km (0.078 R)
• M2: 393,442 km (0.099 R)
• M3: 687,701 km (0.06 R)
• M4: 1,235,080 km (0.112 R)
• M5: 1,609,673 km (0.085 R)
• M6: 1,923,978 km (0.106 R)
• M7: 2,634,119 km (0.069 R)
• M8: 3,086,354 km (0.111 R)
• M9: 3,403,052 km (0.102 R)
• M10: 3,769,268 km (0.035 R)
• M11: 4,222,101 km (0.096 R)
• M12: 4,859,687 km (0.092 R)
• M13: 5,450,898 km (0.084 R)
• M14: 7,052,343 km (0.1 R)
• M15: 7,469,272 km (0.075 R)

Planet 7 - Gas Giant

Semi-Major Axis: 1.47 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 317.3

Radius: 8

Gravity: 4.96 G

Time & Orbit

Eccentricity (e): 0.121

Orbit Range: 1.29 AU - 1.65 AU

Year: 1151 Days

Day: 5.4 Hours

Environment

Temp: -179 °C

Axial Tilt: 14.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 36,821,191 km

• M1: 99,483 km (0.108 R)
• M2: 391,797 km (0.062 R)
• M3: 746,793 km (0.098 R)
• M4: 1,558,660 km (0.104 R)
• M5: 1,881,193 km (0.099 R)
• M6: 2,278,974 km (0.09 R)
• M7: 2,639,206 km (0.105 R)
• M8: 2,924,638 km (0.042 R)
• M9: 3,405,296 km (0.075 R)
• M10: 4,795,659 km (0.113 R)
• M11: 5,131,805 km (0.098 R)
• M12: 5,483,660 km (0.058 R)
• M13: 5,951,003 km (0.075 R)
• M14: 7,281,826 km (0.099 R)
• M15: 8,115,236 km (0.065 R)

Planet 8 - Gas Giant

Semi-Major Axis: 4.92 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 625.4

Radius: 14.5

Gravity: 2.97 G

Time & Orbit

Eccentricity (e): 0.095

Orbit Range: 4.45 AU - 5.39 AU

Year: 7046 Days

Day: 5.1 Hours

Environment

Temp: -213 °C

Axial Tilt: 23.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 36,821,191 km

• M1: 180,415 km (0.041 R)
• M2: 1,336,507 km (0.096 R)
• M3: 3,723,641 km (0.113 R)
• M4: 4,386,359 km (0.053 R)
• M5: 4,843,381 km (0.094 R)
• M6: 5,512,682 km (0.106 R)
• M7: 6,343,249 km (0.076 R)
• M8: 7,743,934 km (0.105 R)
• M9: 8,786,781 km (0.049 R)
• M10: 11,549,554 km (0.115 R)
• M11: 12,910,446 km (0.058 R)
• M12: 13,742,808 km (0.106 R)
• M13: 15,331,089 km (0.11 R)
• M14: 15,949,377 km (0.115 R)
• M15: 18,108,822 km (0.1 R)
• M16: 18,940,437 km (0.066 R)
• M17: 20,829,708 km (0.073 R)
• M18: 21,820,046 km (0.028 R)
• M19: 25,150,095 km (0.116 R)
• M20: 26,185,462 km (0.079 R)
• M21: 28,805,220 km (0.07 R)
• M22: 32,395,568 km (0.081 R)

Kuiper Belt

Range: 30 - 58 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 384 - 12,076 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit