🌌 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: 0.58 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.4

Radius: 1.14

Gravity: 1.08 G

Time & Orbit

Eccentricity (e): 0.129

Orbit Range: 0.51 AU - 0.65 AU

Year: 281 Days

Day: 35.3 Hours

Environment

Temp: -129 °C

Axial Tilt: 17.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.73 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 64.6

Radius: 9.4

Gravity: 0.73 G

Time & Orbit

Eccentricity (e): 0.225

Orbit Range: 0.57 AU - 0.89 AU

Year: 397 Days

Day: 5.4 Hours

Environment

Temp: -145 °C

Axial Tilt: 22.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (4)

Outer Limit: 27,345,747 km

• M1: 116,986 km (0.095 R)
• M2: 713,432 km (0.083 R)
• M3: 1,536,071 km (0.104 R)
• M4: 2,258,180 km (0.108 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.97 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 193.5

Radius: 11.6

Gravity: 1.44 G

Time & Orbit

Eccentricity (e): 0.078

Orbit Range: 0.89 AU - 1.05 AU

Year: 607 Days

Day: 14.5 Hours

Environment

Temp: -162 °C

Axial Tilt: 23.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 27,345,747 km

• M1: 145,858 km (0.055 R)
• M2: 540,497 km (0.108 R)
• M3: 972,386 km (0.114 R)
• M4: 1,666,520 km (0.092 R)
• M5: 2,531,645 km (0.077 R)
• M6: 3,185,687 km (0.056 R)
• M7: 3,686,092 km (0.078 R)
• M8: 4,225,691 km (0.071 R)
• M9: 4,609,709 km (0.029 R)

Planet 4 - Gas Giant

Semi-Major Axis: 3.32 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 655.3

Radius: 14.6

Gravity: 3.07 G

Time & Orbit

Eccentricity (e): 0.141

Orbit Range: 2.85 AU - 3.79 AU

Year: 3846 Days

Day: 10.2 Hours

Environment

Temp: -212 °C

Axial Tilt: 8.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 27,345,747 km

• M1: 181,612 km (0.069 R)
• M2: 844,480 km (0.025 R)
• M3: 1,903,184 km (0.115 R)
• M4: 3,451,672 km (0.093 R)
• M5: 3,936,369 km (0.061 R)
• M6: 4,654,139 km (0.089 R)
• M7: 5,727,504 km (0.12 R)
• M8: 8,327,814 km (0.049 R)
• M9: 9,094,503 km (0.119 R)
• M10: 10,642,991 km (0.056 R)
• M11: 12,830,411 km (0.11 R)
• M12: 15,196,301 km (0.033 R)
• M13: 15,735,153 km (0.094 R)
• M14: 16,737,159 km (0.096 R)
• M15: 18,379,744 km (0.109 R)
• M16: 20,256,599 km (0.058 R)
• M17: 21,442,312 km (0.069 R)
• M18: 22,258,218 km (0.079 R)
• M19: 22,813,675 km (0.076 R)

Planet 5 - Gas Giant

Semi-Major Axis: 4.95 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 349.3

Radius: 10.8

Gravity: 2.99 G

Time & Orbit

Eccentricity (e): 0.038

Orbit Range: 4.76 AU - 5.14 AU

Year: 7002 Days

Day: 5.4 Hours

Environment

Temp: -209 °C

Axial Tilt: 33.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 27,345,747 km

• M1: 134,788 km (0.072 R)
• M2: 476,768 km (0.039 R)
• M3: 815,757 km (0.036 R)
• M4: 2,409,723 km (0.076 R)
• M5: 8,856,044 km (0.083 R)
• M6: 11,925,643 km (0.115 R)
• M7: 12,665,405 km (0.093 R)
• M8: 13,072,311 km (0.056 R)
• M9: 14,182,327 km (0.105 R)
• M10: 18,337,109 km (0.119 R)
• M11: 26,898,445 km (0.061 R)

Planet 6 - Ice Giant

Semi-Major Axis: 6.52 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 221.1

Radius: 3.9

Gravity: 14.54 G

Time & Orbit

Eccentricity (e): 0.143

Orbit Range: 5.59 AU - 7.45 AU

Year: 10585 Days

Day: 17.2 Hours

Environment

Temp: -224 °C

Axial Tilt: 27.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 27,345,747 km

• M1: 52,060 km (0.086 R)
• M2: 201,658 km (0.106 R)
• M3: 641,027 km (0.034 R)
• M4: 1,875,808 km (0.069 R)
• M5: 2,539,125 km (0.118 R)
• M6: 2,836,226 km (0.102 R)
• M7: 4,466,544 km (0.114 R)
• M8: 5,941,728 km (0.109 R)
• M9: 6,231,948 km (0.091 R)
• M10: 6,946,128 km (0.082 R)
• M11: 12,618,730 km (0.096 R)
• M12: 14,725,068 km (0.102 R)
• M13: 15,678,156 km (0.08 R)
• M14: 16,608,206 km (0.084 R)
• M15: 18,509,595 km (0.119 R)
• M16: 23,288,349 km (0.075 R)
• M17: 26,777,271 km (0.096 R)
• M18: 27,923,789 km (0.045 R)

Planet 7 - Ice Giant

Semi-Major Axis: 8.17 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 302.5

Radius: 4

Gravity: 18.91 G

Time & Orbit

Eccentricity (e): 0.133

Orbit Range: 7.08 AU - 9.26 AU

Year: 14848 Days

Day: 16.2 Hours

Environment

Temp: -226 °C

Axial Tilt: 45.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (38)

Outer Limit: 27,345,747 km

• M1: 49,816 km (0.08 R)
• M2: 274,811 km (0.107 R)
• M3: 452,683 km (0.118 R)
• M4: 705,803 km (0.081 R)
• M5: 994,227 km (0.102 R)
• M6: 1,255,725 km (0.099 R)
• M7: 1,866,084 km (0.053 R)
• M8: 2,908,332 km (0.102 R)
• M9: 3,132,729 km (0.036 R)
• M10: 3,320,474 km (0.056 R)
• M11: 4,461,308 km (0.099 R)
• M12: 4,609,110 km (0.079 R)
• M13: 5,200,321 km (0.114 R)
• M14: 5,770,887 km (0.085 R)
• M15: 7,115,024 km (0.045 R)
• M16: 7,276,141 km (0.101 R)
• M17: 8,977,967 km (0.074 R)
• M18: 9,357,197 km (0.101 R)
• M19: 9,945,865 km (0.112 R)
• M20: 10,096,809 km (0.104 R)
• M21: 10,611,127 km (0.112 R)
• M22: 10,927,825 km (0.09 R)
• M23: 11,691,672 km (0.064 R)
• M24: 12,843,576 km (0.118 R)
• M25: 14,195,641 km (0.104 R)
• M26: 15,103,850 km (0.063 R)
• M27: 15,707,776 km (0.084 R)
• M28: 15,912,576 km (0.099 R)
• M29: 19,358,563 km (0.112 R)
• M30: 21,800,000 km (0.045 R)
• M31: 21,969,644 km (0.084 R)
• M32: 22,140,335 km (0.067 R)
• M33: 26,989,401 km (0.072 R)
• M34: 28,682,998 km (0.108 R)
• M35: 35,694,202 km (0.106 R)
• M36: 44,716,000 km (0.046 R)
• M37: 45,403,103 km (0.084 R)
• M38: 46,097,237 km (0.109 R)

Planet 8 - Ice Giant

Semi-Major Axis: 10.67 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 25.9

Radius: 6.2

Gravity: 0.67 G

Time & Orbit

Eccentricity (e): 0.107

Orbit Range: 9.53 AU - 11.81 AU

Year: 22161 Days

Day: 16.8 Hours

Environment

Temp: -227 °C

Axial Tilt: 49.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 27,345,747 km

• M1: 78,389 km (0.117 R)
• M2: 468,391 km (0.062 R)
• M3: 1,515,127 km (0.098 R)
• M4: 2,337,168 km (0.084 R)
• M5: 3,780,039 km (0.113 R)
• M6: 5,234,130 km (0.115 R)
• M7: 5,480,518 km (0.111 R)
• M8: 8,841,833 km (0.067 R)
• M9: 10,044,450 km (0.068 R)
• M10: 13,726,801 km (0.079 R)
• M11: 18,723,370 km (0.076 R)
• M12: 19,365,594 km (0.089 R)

Kuiper Belt

Range: 30 - 45 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 309 - 16,075 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit