🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.32 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.64 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.6

Radius: 0.82

Gravity: 0.89 G

Time & Orbit

Eccentricity (e): 0.25

Orbit Range: 0.48 AU - 0.8 AU

Year: 331 Days

Day: 34.2 Hours

Environment

Temp: -129 °C

Axial Tilt: 35.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 55,896,738 km

• M1: 70,461 km (0.101 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.88 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 943.6

Radius: 14.6

Gravity: 4.43 G

Time & Orbit

Eccentricity (e): 0.154

Orbit Range: 0.74 AU - 1.02 AU

Year: 533 Days

Day: 5.3 Hours

Environment

Temp: -153 °C

Axial Tilt: 15.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 55,896,738 km

• M1: 188,344 km (0.051 R)
• M2: 731,683 km (0.066 R)
• M3: 1,212,192 km (0.099 R)
• M4: 1,726,659 km (0.037 R)
• M5: 2,551,092 km (0.096 R)
• M6: 3,495,055 km (0.099 R)
• M7: 3,998,751 km (0.085 R)
• M8: 4,519,950 km (0.065 R)
• M9: 5,171,299 km (0.077 R)
• M10: 5,922,131 km (0.087 R)
• M11: 6,847,693 km (0.11 R)
• M12: 7,509,514 km (0.113 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.97 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 432.9

Radius: 9.1

Gravity: 5.23 G

Time & Orbit

Eccentricity (e): 0.025

Orbit Range: 0.95 AU - 0.99 AU

Year: 617 Days

Day: 7.6 Hours

Environment

Temp: -154 °C

Axial Tilt: 0.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 55,896,738 km

• M1: 114,592 km (0.103 R)
• M2: 432,787 km (0.116 R)
• M3: 731,234 km (0.077 R)
• M4: 1,250,937 km (0.052 R)
• M5: 1,552,078 km (0.116 R)
• M6: 1,837,660 km (0.116 R)
• M7: 2,732,256 km (0.057 R)
• M8: 3,176,561 km (0.104 R)
• M9: 3,478,150 km (0.107 R)
• M10: 3,799,038 km (0.062 R)
• M11: 4,635,888 km (0.098 R)
• M12: 5,403,176 km (0.087 R)
• M13: 5,817,562 km (0.054 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.04 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 158.5

Radius: 10.6

Gravity: 1.41 G

Time & Orbit

Eccentricity (e): 0.099

Orbit Range: 0.94 AU - 1.14 AU

Year: 685 Days

Day: 8.3 Hours

Environment

Temp: -154 °C

Axial Tilt: 8.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 55,896,738 km

• M1: 131,945 km (0.098 R)
• M2: 616,942 km (0.074 R)
• M3: 1,268,740 km (0.091 R)
• M4: 1,672,654 km (0.053 R)
• M5: 2,035,279 km (0.07 R)
• M6: 3,277,689 km (0.081 R)
• M7: 3,889,096 km (0.101 R)
• M8: 4,254,863 km (0.069 R)
• M9: 4,588,615 km (0.026 R)

Planet 5 - Ice Giant

Semi-Major Axis: 6.09 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 19.3

Radius: 7.7

Gravity: 0.33 G

Time & Orbit

Eccentricity (e): 0.132

Orbit Range: 5.29 AU - 6.89 AU

Year: 9704 Days

Day: 18.8 Hours

Environment

Temp: -214 °C

Axial Tilt: 2.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 55,896,738 km

• M1: 126,261 km (0.104 R)
• M2: 531,222 km (0.108 R)
• M3: 951,143 km (0.069 R)
• M4: 3,463,789 km (0.031 R)
• M5: 5,619,943 km (0.087 R)
• M6: 6,964,978 km (0.111 R)
• M7: 11,153,419 km (0.119 R)
• M8: 11,665,941 km (0.071 R)

Planet 6 - Ice Giant

Semi-Major Axis: 7.46 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 368.2

Radius: 5.1

Gravity: 14.16 G

Time & Orbit

Eccentricity (e): 0.068

Orbit Range: 6.95 AU - 7.97 AU

Year: 13156 Days

Day: 15.1 Hours

Environment

Temp: -218 °C

Axial Tilt: 31 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 55,896,738 km

• M1: 63,429 km (0.113 R)
• M2: 227,538 km (0.113 R)
• M3: 1,727,556 km (0.098 R)
• M4: 3,379,266 km (0.084 R)
• M5: 3,857,082 km (0.08 R)
• M6: 6,045,998 km (0.037 R)
• M7: 6,409,072 km (0.08 R)
• M8: 8,182,256 km (0.084 R)
• M9: 16,229,424 km (0.107 R)
• M10: 16,788,471 km (0.079 R)
• M11: 17,432,490 km (0.114 R)
• M12: 20,174,320 km (0.099 R)
• M13: 22,581,948 km (0.104 R)
• M14: 24,531,358 km (0.058 R)
• M15: 32,125,844 km (0.069 R)
• M16: 35,626,883 km (0.081 R)
• M17: 37,288,017 km (0.03 R)
• M18: 37,529,468 km (0.086 R)
• M19: 38,015,512 km (0.113 R)
• M20: 39,000,165 km (0.082 R)
• M21: 46,792,868 km (0.12 R)

Planet 7 - Ice Giant

Semi-Major Axis: 9.34 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 319.8

Radius: 3.7

Gravity: 23.36 G

Time & Orbit

Eccentricity (e): 0.008

Orbit Range: 9.27 AU - 9.41 AU

Year: 18430 Days

Day: 16.5 Hours

Environment

Temp: -220 °C

Axial Tilt: 59 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (31)

Outer Limit: 55,896,738 km

• M1: 47,572 km (0.107 R)
• M2: 177,423 km (0.051 R)
• M3: 513,270 km (0.109 R)
• M4: 734,526 km (0.092 R)
• M5: 1,109,119 km (0.098 R)
• M6: 1,311,824 km (0.048 R)
• M7: 1,775,128 km (0.087 R)
• M8: 2,544,660 km (0.094 R)
• M9: 3,159,357 km (0.03 R)
• M10: 3,384,502 km (0.104 R)
• M11: 4,273,114 km (0.084 R)
• M12: 5,000,907 km (0.106 R)
• M13: 5,844,639 km (0.097 R)
• M14: 6,222,673 km (0.068 R)
• M15: 8,743,098 km (0.112 R)
• M16: 10,774,936 km (0.073 R)
• M17: 11,227,470 km (0.103 R)
• M18: 11,342,511 km (0.097 R)
• M19: 12,049,510 km (0.103 R)
• M20: 12,911,044 km (0.094 R)
• M21: 14,011,337 km (0.061 R)
• M22: 14,618,405 km (0.081 R)
• M23: 19,450,117 km (0.106 R)
• M24: 24,563,073 km (0.112 R)
• M25: 25,246,885 km (0.111 R)
• M26: 26,144,472 km (0.108 R)
• M27: 27,270,046 km (0.085 R)
• M28: 39,286,495 km (0.101 R)
• M29: 40,355,372 km (0.108 R)
• M30: 51,019,456 km (0.103 R)
• M31: 52,291,038 km (0.032 R)

Kuiper Belt

Range: 30 - 52 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 481 - 11,095 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit