🌌 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: 0.51 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.93

Radius: 1.54

Gravity: 1.24 G

Time & Orbit

Eccentricity (e): 0.14

Orbit Range: 0.44 AU - 0.58 AU

Year: 235 Days

Day: 43.4 Hours

Environment

Temp: -124 °C

Axial Tilt: 32.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.72 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 48.5

Radius: 12.8

Gravity: 0.3 G

Time & Orbit

Eccentricity (e): 0.221

Orbit Range: 0.56 AU - 0.88 AU

Year: 394 Days

Day: 11.6 Hours

Environment

Temp: -146 °C

Axial Tilt: 1.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (4)

Outer Limit: 76,337,572 km

• M1: 159,621 km (0.045 R)
• M2: 559,496 km (0.08 R)
• M3: 1,032,824 km (0.097 R)
• M4: 1,505,254 km (0.054 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.91 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 874.3

Radius: 14.8

Gravity: 3.99 G

Time & Orbit

Eccentricity (e): 0.155

Orbit Range: 0.77 AU - 1.05 AU

Year: 561 Days

Day: 8 Hours

Environment

Temp: -161 °C

Axial Tilt: 19.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 76,337,572 km

• M1: 184,305 km (0.091 R)
• M2: 656,136 km (0.077 R)
• M3: 1,341,295 km (0.073 R)
• M4: 1,980,975 km (0.096 R)
• M5: 2,459,239 km (0.03 R)
• M6: 4,479,259 km (0.101 R)
• M7: 5,026,937 km (0.115 R)
• M8: 7,135,370 km (0.083 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.61 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 201.8

Radius: 11.3

Gravity: 1.58 G

Time & Orbit

Eccentricity (e): 0.161

Orbit Range: 1.35 AU - 1.87 AU

Year: 1319 Days

Day: 5.2 Hours

Environment

Temp: -190 °C

Axial Tilt: 8.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 76,337,572 km

• M1: 140,472 km (0.098 R)
• M2: 497,862 km (0.116 R)
• M3: 1,044,642 km (0.103 R)
• M4: 1,792,033 km (0.083 R)
• M5: 2,162,288 km (0.056 R)
• M6: 2,763,222 km (0.1 R)
• M7: 3,185,387 km (0.037 R)
• M8: 3,878,325 km (0.088 R)
• M9: 4,362,723 km (0.045 R)
• M10: 4,990,136 km (0.111 R)
• M11: 5,490,092 km (0.06 R)
• M12: 7,105,749 km (0.077 R)
• M13: 7,647,144 km (0.048 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.87 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 76.4

Radius: 11.5

Gravity: 0.58 G

Time & Orbit

Eccentricity (e): 0.14

Orbit Range: 2.47 AU - 3.27 AU

Year: 3139 Days

Day: 6.2 Hours

Environment

Temp: -205 °C

Axial Tilt: 49 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 76,337,572 km

• M1: 143,016 km (0.055 R)
• M2: 1,008,439 km (0.086 R)
• M3: 1,372,560 km (0.09 R)
• M4: 2,215,844 km (0.119 R)
• M5: 3,449,129 km (0.105 R)
• M6: 4,083,872 km (0.064 R)
• M7: 4,887,362 km (0.039 R)
• M8: 6,854,275 km (0.051 R)
• M9: 8,410,991 km (0.117 R)
• M10: 9,301,098 km (0.096 R)
• M11: 9,918,638 km (0.1 R)

Planet 6 - Gas Giant

Semi-Major Axis: 4.87 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 542.5

Radius: 9.5

Gravity: 6.01 G

Time & Orbit

Eccentricity (e): 0.086

Orbit Range: 4.45 AU - 5.29 AU

Year: 6939 Days

Day: 14.5 Hours

Environment

Temp: -214 °C

Axial Tilt: 44.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 76,337,572 km

• M1: 118,182 km (0.107 R)
• M2: 420,968 km (0.116 R)
• M3: 762,800 km (0.048 R)
• M4: 1,374,356 km (0.107 R)
• M5: 1,802,654 km (0.038 R)
• M6: 3,048,954 km (0.042 R)
• M7: 3,669,037 km (0.072 R)
• M8: 4,822,287 km (0.109 R)
• M9: 5,159,631 km (0.028 R)
• M10: 5,542,751 km (0.096 R)
• M11: 8,334,247 km (0.108 R)
• M12: 8,738,909 km (0.069 R)
• M13: 9,413,745 km (0.064 R)
• M14: 15,205,277 km (0.081 R)
• M15: 15,566,257 km (0.03 R)
• M16: 20,358,325 km (0.116 R)
• M17: 20,797,395 km (0.117 R)
• M18: 23,886,741 km (0.067 R)
• M19: 24,704,293 km (0.096 R)
• M20: 25,880,282 km (0.106 R)
• M21: 30,290,427 km (0.111 R)

Planet 7 - Ice Giant

Semi-Major Axis: 11.26 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 464.9

Radius: 3.4

Gravity: 40.22 G

Time & Orbit

Eccentricity (e): 0.116

Orbit Range: 9.95 AU - 12.57 AU

Year: 24396 Days

Day: 24.1 Hours

Environment

Temp: -233 °C

Axial Tilt: 17.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (33)

Outer Limit: 76,337,572 km

• M1: 42,486 km (0.12 R)
• M2: 234,270 km (0.103 R)
• M3: 565,630 km (0.08 R)
• M4: 1,019,809 km (0.062 R)
• M5: 1,699,282 km (0.097 R)
• M6: 2,759,183 km (0.117 R)
• M7: 3,455,711 km (0.113 R)
• M8: 4,328,764 km (0.108 R)
• M9: 5,416,939 km (0.083 R)
• M10: 6,720,236 km (0.106 R)
• M11: 7,517,143 km (0.113 R)
• M12: 7,762,933 km (0.104 R)
• M13: 8,219,057 km (0.099 R)
• M14: 9,408,509 km (0.061 R)
• M15: 9,522,054 km (0.116 R)
• M16: 14,471,200 km (0.098 R)
• M17: 17,789,132 km (0.055 R)
• M18: 21,188,893 km (0.045 R)
• M19: 34,738,122 km (0.088 R)
• M20: 36,248,312 km (0.114 R)
• M21: 36,387,737 km (0.116 R)
• M22: 38,959,175 km (0.054 R)
• M23: 40,889,885 km (0.049 R)
• M24: 42,263,194 km (0.11 R)
• M25: 44,141,694 km (0.067 R)
• M26: 46,075,097 km (0.086 R)
• M27: 47,728,901 km (0.102 R)
• M28: 51,858,401 km (0.12 R)
• M29: 52,568,991 km (0.054 R)
• M30: 56,033,229 km (0.04 R)
• M31: 58,297,692 km (0.094 R)
• M32: 59,065,877 km (0.053 R)
• M33: 60,035,570 km (0.08 R)

Kuiper Belt

Range: 30 - 49 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 249 - 12,948 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit