🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.29 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.57 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.29

Radius: 1.61

Gravity: 1.27 G

Time & Orbit

Eccentricity (e): 0.097

Orbit Range: 0.51 AU - 0.63 AU

Year: 282 Days

Day: 30.3 Hours

Environment

Temp: -116 °C

Axial Tilt: 7.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.6 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.62

Radius: 1.67

Gravity: 1.3 G

Time & Orbit

Eccentricity (e): 0.133

Orbit Range: 0.52 AU - 0.68 AU

Year: 305 Days

Day: 43 Hours

Environment

Temp: -127 °C

Axial Tilt: 18.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Terrestrial

Semi-Major Axis: 0.62 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.35

Radius: 1.41

Gravity: 1.18 G

Time & Orbit

Eccentricity (e): 0.172

Orbit Range: 0.51 AU - 0.73 AU

Year: 320 Days

Day: 42.9 Hours

Environment

Temp: -130 °C

Axial Tilt: 39.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 4 - Terrestrial

Semi-Major Axis: 0.67 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.62

Radius: 0.83

Gravity: 0.9 G

Time & Orbit

Eccentricity (e): 0.123

Orbit Range: 0.59 AU - 0.75 AU

Year: 360 Days

Day: 34.2 Hours

Environment

Temp: -145 °C

Axial Tilt: 19.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 30,464,478 km

• M1: 20,944 km (0.086 R)

Planet 5 - Gas Giant

Semi-Major Axis: 0.7 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 55.3

Radius: 12.3

Gravity: 0.37 G

Time & Orbit

Eccentricity (e): 0.184

Orbit Range: 0.57 AU - 0.83 AU

Year: 384 Days

Day: 8.4 Hours

Environment

Temp: -135 °C

Axial Tilt: 47.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (4)

Outer Limit: 30,464,478 km

• M1: 153,338 km (0.066 R)
• M2: 861,983 km (0.083 R)
• M3: 1,451,099 km (0.114 R)
• M4: 1,848,282 km (0.065 R)

Planet 6 - Gas Giant

Semi-Major Axis: 0.79 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 801.2

Radius: 13.1

Gravity: 4.67 G

Time & Orbit

Eccentricity (e): 0.213

Orbit Range: 0.62 AU - 0.96 AU

Year: 461 Days

Day: 10.6 Hours

Environment

Temp: -143 °C

Axial Tilt: 21.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 30,464,478 km

• M1: 164,109 km (0.068 R)
• M2: 815,608 km (0.112 R)
• M3: 1,410,110 km (0.119 R)
• M4: 2,553,935 km (0.083 R)
• M5: 3,353,835 km (0.086 R)
• M6: 3,939,660 km (0.115 R)
• M7: 4,623,023 km (0.115 R)
• M8: 5,638,793 km (0.042 R)
• M9: 6,357,610 km (0.083 R)

Planet 7 - Gas Giant

Semi-Major Axis: 0.87 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 886.7

Radius: 14

Gravity: 4.52 G

Time & Orbit

Eccentricity (e): 0.077

Orbit Range: 0.8 AU - 0.94 AU

Year: 532 Days

Day: 8 Hours

Environment

Temp: -142 °C

Axial Tilt: 65.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 30,464,478 km

• M1: 174,132 km (0.114 R)
• M2: 622,327 km (0.087 R)
• M3: 1,109,268 km (0.047 R)
• M4: 1,553,574 km (0.09 R)
• M5: 2,031,090 km (0.119 R)
• M6: 2,618,262 km (0.075 R)
• M7: 3,063,764 km (0.101 R)
• M8: 3,814,746 km (0.097 R)
• M9: 5,850,174 km (0.108 R)
• M10: 6,304,503 km (0.115 R)
• M11: 7,009,558 km (0.113 R)

Planet 8 - Gas Giant

Semi-Major Axis: 4.78 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 88.6

Radius: 10.1

Gravity: 0.87 G

Time & Orbit

Eccentricity (e): 0.186

Orbit Range: 3.89 AU - 5.67 AU

Year: 6856 Days

Day: 13.9 Hours

Environment

Temp: -217 °C

Axial Tilt: 5.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 30,464,478 km

• M1: 126,560 km (0.063 R)
• M2: 699,669 km (0.059 R)
• M3: 1,152,951 km (0.107 R)
• M4: 2,314,728 km (0.108 R)
• M5: 2,819,172 km (0.05 R)
• M6: 3,931,731 km (0.064 R)
• M7: 4,784,589 km (0.102 R)
• M8: 6,911,571 km (0.116 R)
• M9: 10,448,065 km (0.11 R)
• M10: 11,064,259 km (0.085 R)
• M11: 11,992,214 km (0.119 R)
• M12: 13,728,297 km (0.095 R)
• M13: 16,177,065 km (0.078 R)

Planet 9 - Ice Giant

Semi-Major Axis: 5.95 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 194

Radius: 5.5

Gravity: 6.41 G

Time & Orbit

Eccentricity (e): 0.006

Orbit Range: 5.91 AU - 5.99 AU

Year: 9521 Days

Day: 22.5 Hours

Environment

Temp: -222 °C

Axial Tilt: 46.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 30,464,478 km

• M1: 68,366 km (0.069 R)
• M2: 307,872 km (0.101 R)
• M3: 832,961 km (0.116 R)
• M4: 1,140,983 km (0.079 R)
• M5: 1,394,103 km (0.103 R)
• M6: 2,605,097 km (0.117 R)
• M7: 4,391,894 km (0.103 R)
• M8: 5,435,040 km (0.059 R)
• M9: 5,937,839 km (0.055 R)
• M10: 6,832,883 km (0.082 R)
• M11: 7,069,995 km (0.063 R)
• M12: 8,224,741 km (0.073 R)
• M13: 9,047,679 km (0.118 R)
• M14: 9,668,062 km (0.098 R)
• M15: 10,140,940 km (0.101 R)
• M16: 11,413,719 km (0.104 R)
• M17: 15,631,182 km (0.107 R)
• M18: 18,538,467 km (0.082 R)
• M19: 19,000,126 km (0.06 R)
• M20: 19,537,183 km (0.054 R)
• M21: 23,125,288 km (0.107 R)
• M22: 26,626,177 km (0.073 R)
• M23: 28,068,300 km (0.085 R)
• M24: 28,415,068 km (0.093 R)
• M25: 30,101,186 km (0.103 R)

Kuiper Belt

Range: 30 - 54 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 178 - 11,689 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit