🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.51 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 1.01 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.15

Radius: 1.58

Gravity: 1.26 G

Time & Orbit

Eccentricity (e): 0.155

Orbit Range: 0.85 AU - 1.17 AU

Year: 453 Days

Day: 28.9 Hours

Environment

Temp: -68 °C

Axial Tilt: 24.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 31,179,009 km

• M1: 75,248 km (0.057 R)
• M2: 924,814 km (0.108 R)

Planet 2 - Terrestrial

Semi-Major Axis: 1.47 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.54

Radius: 1.83

Gravity: 1.36 G

Time & Orbit

Eccentricity (e): 0.123

Orbit Range: 1.29 AU - 1.65 AU

Year: 795 Days

Day: 31.3 Hours

Environment

Temp: -106 °C

Axial Tilt: 34.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Terrestrial

Semi-Major Axis: 1.71 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.86

Radius: 1.28

Gravity: 1.14 G

Time & Orbit

Eccentricity (e): 0.003

Orbit Range: 1.7 AU - 1.72 AU

Year: 998 Days

Day: 40.8 Hours

Environment

Temp: -116 °C

Axial Tilt: 13.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 4 - Terrestrial

Semi-Major Axis: 1.91 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.63

Radius: 1.47

Gravity: 1.22 G

Time & Orbit

Eccentricity (e): 0.182

Orbit Range: 1.56 AU - 2.26 AU

Year: 1178 Days

Day: 39 Hours

Environment

Temp: -131 °C

Axial Tilt: 12 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Asteroid Belt

Center: 2.23 AU

Composition

Type: Main (Rocky/Icy Mix)

A dense region of planetesimals and debris.

Boundary

Planet 5 - Gas Giant

Semi-Major Axis: 2.55 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 129.4

Radius: 8.2

Gravity: 1.92 G

Time & Orbit

Eccentricity (e): 0.051

Orbit Range: 2.42 AU - 2.68 AU

Year: 1817 Days

Day: 6.4 Hours

Environment

Temp: -142 °C

Axial Tilt: 145.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 31,179,009 km

• M1: 103,372 km (0.099 R)
• M2: 409,749 km (0.092 R)
• M3: 1,205,310 km (0.098 R)
• M4: 3,093,385 km (0.094 R)
• M5: 4,208,936 km (0.073 R)
• M6: 4,685,405 km (0.029 R)
• M7: 5,142,876 km (0.066 R)
• M8: 6,208,760 km (0.063 R)
• M9: 6,630,776 km (0.11 R)
• M10: 7,579,227 km (0.107 R)

Planet 6 - Gas Giant

Semi-Major Axis: 4.05 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 488.2

Radius: 11.4

Gravity: 3.76 G

Time & Orbit

Eccentricity (e): 0.079

Orbit Range: 3.73 AU - 4.37 AU

Year: 3637 Days

Day: 6.8 Hours

Environment

Temp: -161 °C

Axial Tilt: 24.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 31,179,009 km

• M1: 144,661 km (0.073 R)
• M2: 536,009 km (0.099 R)
• M3: 1,111,363 km (0.095 R)
• M4: 1,624,633 km (0.114 R)
• M5: 2,064,600 km (0.112 R)
• M6: 2,614,372 km (0.119 R)
• M7: 3,650,188 km (0.077 R)
• M8: 5,013,025 km (0.111 R)
• M9: 5,770,289 km (0.096 R)
• M10: 6,660,396 km (0.112 R)
• M11: 8,231,324 km (0.062 R)
• M12: 8,712,430 km (0.082 R)
• M13: 9,285,241 km (0.044 R)
• M14: 11,532,350 km (0.09 R)
• M15: 14,072,073 km (0.115 R)
• M16: 15,318,074 km (0.084 R)
• M17: 19,316,975 km (0.116 R)
• M18: 20,045,217 km (0.076 R)
• M19: 20,791,411 km (0.118 R)

Planet 7 - Gas Giant

Semi-Major Axis: 4.59 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 734.6

Radius: 14.2

Gravity: 3.64 G

Time & Orbit

Eccentricity (e): 0.021

Orbit Range: 4.49 AU - 4.69 AU

Year: 4388 Days

Day: 13.2 Hours

Environment

Temp: -179 °C

Axial Tilt: 7.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 31,179,009 km

• M1: 176,675 km (0.081 R)
• M2: 849,118 km (0.051 R)
• M3: 1,302,848 km (0.084 R)
• M4: 1,833,920 km (0.115 R)
• M5: 2,430,816 km (0.061 R)
• M6: 3,428,484 km (0.093 R)
• M7: 4,734,324 km (0.042 R)
• M8: 6,535,781 km (0.117 R)
• M9: 7,419,755 km (0.108 R)
• M10: 8,531,267 km (0.103 R)
• M11: 10,597,962 km (0.09 R)
• M12: 11,174,363 km (0.096 R)
• M13: 12,102,019 km (0.047 R)
• M14: 12,732,125 km (0.109 R)
• M15: 19,891,430 km (0.116 R)
• M16: 20,838,535 km (0.071 R)
• M17: 22,604,687 km (0.074 R)
• M18: 23,936,706 km (0.109 R)
• M19: 25,635,091 km (0.096 R)
• M20: 27,661,095 km (0.077 R)

Planet 8 - Gas Giant

Semi-Major Axis: 4.65 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 941.7

Radius: 9.5

Gravity: 10.43 G

Time & Orbit

Eccentricity (e): 0.138

Orbit Range: 4.01 AU - 5.29 AU

Year: 4474 Days

Day: 10.2 Hours

Environment

Temp: -165 °C

Axial Tilt: 3.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 31,179,009 km

• M1: 118,332 km (0.094 R)
• M2: 457,919 km (0.092 R)
• M3: 948,451 km (0.12 R)
• M4: 1,404,724 km (0.086 R)
• M5: 1,918,443 km (0.106 R)
• M6: 2,290,343 km (0.086 R)
• M7: 2,782,072 km (0.054 R)
• M8: 3,772,410 km (0.098 R)
• M9: 4,360,778 km (0.094 R)
• M10: 5,370,863 km (0.078 R)
• M11: 6,928,476 km (0.097 R)
• M12: 8,184,500 km (0.119 R)
• M13: 8,687,597 km (0.091 R)
• M14: 9,418,383 km (0.099 R)
• M15: 10,545,304 km (0.109 R)
• M16: 11,282,223 km (0.086 R)
• M17: 15,028,901 km (0.092 R)
• M18: 16,381,864 km (0.112 R)
• M19: 17,686,507 km (0.096 R)
• M20: 19,193,407 km (0.079 R)
• M21: 20,926,498 km (0.042 R)
• M22: 23,370,778 km (0.116 R)
• M23: 29,621,725 km (0.112 R)

Kuiper Belt

Range: 30 - 51 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 546 - 10,827 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit