🌌 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: 4.06

Radius: 1.75

Gravity: 1.33 G

Time & Orbit

Eccentricity (e): 0.244

Orbit Range: 0.44 AU - 0.72 AU

Year: 285 Days

Day: 25.8 Hours

Environment

Temp: -124 °C

Axial Tilt: 32.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 1.04 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 484

Radius: 9.1

Gravity: 5.84 G

Time & Orbit

Eccentricity (e): 0.162

Orbit Range: 0.87 AU - 1.21 AU

Year: 685 Days

Day: 8 Hours

Environment

Temp: -164 °C

Axial Tilt: 35.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 34,333,899 km

• M1: 113,246 km (0.119 R)
• M2: 404,513 km (0.038 R)
• M3: 775,665 km (0.032 R)
• M4: 1,647,521 km (0.106 R)
• M5: 3,068,252 km (0.04 R)
• M6: 3,476,355 km (0.056 R)
• M7: 4,386,658 km (0.079 R)
• M8: 4,840,837 km (0.116 R)
• M9: 5,661,232 km (0.058 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.12 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 347.4

Radius: 11.9

Gravity: 2.45 G

Time & Orbit

Eccentricity (e): 0.029

Orbit Range: 1.09 AU - 1.15 AU

Year: 765 Days

Day: 6.7 Hours

Environment

Temp: -171 °C

Axial Tilt: 39.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 34,333,899 km

• M1: 154,535 km (0.112 R)
• M2: 762,351 km (0.088 R)
• M3: 1,313,170 km (0.112 R)
• M4: 1,948,811 km (0.097 R)
• M5: 2,460,586 km (0.098 R)
• M6: 3,015,295 km (0.098 R)
• M7: 3,447,034 km (0.054 R)
• M8: 4,003,239 km (0.099 R)
• M9: 4,997,915 km (0.116 R)
• M10: 5,398,239 km (0.107 R)
• M11: 5,983,616 km (0.113 R)
• M12: 6,397,254 km (0.106 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.2 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 176.6

Radius: 12.3

Gravity: 1.17 G

Time & Orbit

Eccentricity (e): 0.243

Orbit Range: 0.91 AU - 1.49 AU

Year: 849 Days

Day: 9.7 Hours

Environment

Temp: -173 °C

Axial Tilt: 33.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 34,333,899 km

• M1: 153,039 km (0.083 R)
• M2: 799,601 km (0.107 R)
• M3: 1,430,156 km (0.026 R)
• M4: 2,121,447 km (0.114 R)
• M5: 2,622,899 km (0.114 R)
• M6: 3,506,125 km (0.074 R)
• M7: 3,919,015 km (0.088 R)
• M8: 4,578,293 km (0.079 R)
• M9: 5,789,288 km (0.037 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.21 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 913.2

Radius: 10.6

Gravity: 8.13 G

Time & Orbit

Eccentricity (e): 0.068

Orbit Range: 1.13 AU - 1.29 AU

Year: 859 Days

Day: 11.7 Hours

Environment

Temp: -165 °C

Axial Tilt: 29.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 34,333,899 km

• M1: 131,796 km (0.119 R)
• M2: 585,526 km (0.106 R)
• M3: 926,908 km (0.078 R)
• M4: 1,339,649 km (0.067 R)
• M5: 1,922,482 km (0.076 R)
• M6: 3,007,964 km (0.086 R)
• M7: 3,685,493 km (0.045 R)
• M8: 4,044,827 km (0.078 R)
• M9: 4,513,817 km (0.104 R)
• M10: 5,132,105 km (0.099 R)
• M11: 5,785,249 km (0.085 R)
• M12: 6,207,564 km (0.094 R)
• M13: 7,281,377 km (0.113 R)
• M14: 8,448,241 km (0.108 R)
• M15: 8,882,074 km (0.1 R)
• M16: 9,589,822 km (0.08 R)
• M17: 10,062,102 km (0.077 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.49 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 485.9

Radius: 10.1

Gravity: 4.76 G

Time & Orbit

Eccentricity (e): 0.081

Orbit Range: 1.37 AU - 1.61 AU

Year: 1174 Days

Day: 5.5 Hours

Environment

Temp: -184 °C

Axial Tilt: 31.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 34,333,899 km

• M1: 125,961 km (0.102 R)
• M2: 523,593 km (0.105 R)
• M3: 854,503 km (0.063 R)
• M4: 1,197,082 km (0.099 R)
• M5: 1,875,359 km (0.079 R)
• M6: 2,194,601 km (0.099 R)
• M7: 2,538,825 km (0.058 R)
• M8: 2,893,522 km (0.03 R)
• M9: 3,212,165 km (0.099 R)
• M10: 4,064,724 km (0.114 R)
• M11: 5,194,188 km (0.102 R)
• M12: 6,862,653 km (0.119 R)
• M13: 7,581,321 km (0.099 R)
• M14: 7,959,056 km (0.096 R)
• M15: 9,140,280 km (0.104 R)
• M16: 9,861,641 km (0.101 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.93 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 756.4

Radius: 14.8

Gravity: 3.45 G

Time & Orbit

Eccentricity (e): 0.154

Orbit Range: 3.32 AU - 4.54 AU

Year: 5030 Days

Day: 12.1 Hours

Environment

Temp: -213 °C

Axial Tilt: 21 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 34,333,899 km

• M1: 184,155 km (0.051 R)
• M2: 1,167,013 km (0.08 R)
• M3: 1,637,498 km (0.113 R)
• M4: 2,118,605 km (0.1 R)
• M5: 2,609,436 km (0.078 R)
• M6: 3,522,731 km (0.115 R)
• M7: 4,539,248 km (0.101 R)
• M8: 5,008,238 km (0.074 R)
• M9: 5,773,131 km (0.102 R)
• M10: 6,713,204 km (0.104 R)
• M11: 7,360,066 km (0.057 R)
• M12: 7,973,716 km (0.113 R)
• M13: 10,823,705 km (0.042 R)
• M14: 11,287,010 km (0.043 R)
• M15: 14,021,958 km (0.041 R)
• M16: 19,723,881 km (0.112 R)
• M17: 20,416,669 km (0.12 R)
• M18: 22,593,018 km (0.029 R)
• M19: 23,659,950 km (0.047 R)
• M20: 25,000,347 km (0.06 R)
• M21: 25,730,235 km (0.092 R)
• M22: 26,307,683 km (0.096 R)
• M23: 27,574,179 km (0.088 R)
• M24: 28,179,003 km (0.116 R)
• M25: 30,228,793 km (0.078 R)

Planet 8 - Gas Giant

Semi-Major Axis: 4.06 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 902.3

Radius: 13.7

Gravity: 4.81 G

Time & Orbit

Eccentricity (e): 0.042

Orbit Range: 3.89 AU - 4.23 AU

Year: 5282 Days

Day: 10.5 Hours

Environment

Temp: -213 °C

Axial Tilt: 56.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 34,333,899 km

• M1: 170,691 km (0.066 R)
• M2: 636,838 km (0.064 R)
• M3: 1,111,363 km (0.104 R)
• M4: 2,389,826 km (0.117 R)
• M5: 2,943,936 km (0.028 R)
• M6: 3,452,569 km (0.118 R)
• M7: 5,227,847 km (0.08 R)
• M8: 6,463,974 km (0.116 R)
• M9: 7,045,162 km (0.116 R)
• M10: 7,735,706 km (0.061 R)
• M11: 8,234,016 km (0.086 R)
• M12: 8,712,879 km (0.034 R)
• M13: 9,552,572 km (0.101 R)
• M14: 10,353,818 km (0.088 R)
• M15: 12,975,072 km (0.103 R)
• M16: 13,958,229 km (0.04 R)
• M17: 14,640,844 km (0.116 R)
• M18: 15,286,060 km (0.117 R)
• M19: 16,507,826 km (0.095 R)
• M20: 20,131,385 km (0.113 R)
• M21: 24,499,045 km (0.08 R)
• M22: 25,745,644 km (0.113 R)
• M23: 32,423,394 km (0.066 R)

Kuiper Belt

Range: 30 - 58 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 253 - 19,003 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit