🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.3 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.6 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.37

Radius: 1.8

Gravity: 1.35 G

Time & Orbit

Eccentricity (e): 0.045

Orbit Range: 0.57 AU - 0.63 AU

Year: 305 Days

Day: 16 Hours

Environment

Temp: -135 °C

Axial Tilt: 32.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.79 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 894.7

Radius: 13

Gravity: 5.29 G

Time & Orbit

Eccentricity (e): 0.154

Orbit Range: 0.67 AU - 0.91 AU

Year: 461 Days

Day: 5.3 Hours

Environment

Temp: -136 °C

Axial Tilt: 23.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 71,412,431 km

• M1: 163,062 km (0.086 R)
• M2: 687,701 km (0.11 R)
• M3: 1,101,639 km (0.092 R)
• M4: 1,667,867 km (0.093 R)
• M5: 2,111,574 km (0.107 R)
• M6: 2,707,422 km (0.031 R)
• M7: 3,244,179 km (0.06 R)
• M8: 3,679,808 km (0.111 R)
• M9: 4,283,286 km (0.119 R)
• M10: 5,413,199 km (0.095 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.85 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 487.1

Radius: 11.7

Gravity: 3.56 G

Time & Orbit

Eccentricity (e): 0.169

Orbit Range: 0.71 AU - 0.99 AU

Year: 514 Days

Day: 7.6 Hours

Environment

Temp: -154 °C

Axial Tilt: 12.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 71,412,431 km

• M1: 145,559 km (0.066 R)
• M2: 512,074 km (0.107 R)
• M3: 975,677 km (0.103 R)
• M4: 1,404,275 km (0.074 R)
• M5: 2,016,280 km (0.109 R)
• M6: 2,436,501 km (0.085 R)
• M7: 3,000,933 km (0.072 R)
• M8: 3,552,949 km (0.109 R)
• M9: 3,957,911 km (0.081 R)
• M10: 4,550,917 km (0.085 R)
• M11: 5,298,158 km (0.05 R)

Planet 4 - Gas Giant

Semi-Major Axis: 3.18 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 333.4

Radius: 10.4

Gravity: 3.08 G

Time & Orbit

Eccentricity (e): 0.21

Orbit Range: 2.51 AU - 3.85 AU

Year: 3720 Days

Day: 11 Hours

Environment

Temp: -215 °C

Axial Tilt: 12.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 71,412,431 km

• M1: 129,552 km (0.079 R)
• M2: 636,838 km (0.077 R)
• M3: 1,397,394 km (0.115 R)
• M4: 2,179,491 km (0.101 R)
• M5: 3,909,292 km (0.095 R)
• M6: 5,043,094 km (0.077 R)
• M7: 5,930,060 km (0.08 R)
• M8: 6,576,921 km (0.101 R)
• M9: 7,451,171 km (0.077 R)
• M10: 8,204,695 km (0.109 R)
• M11: 18,984,119 km (0.082 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.38 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 841.6

Radius: 13.5

Gravity: 4.62 G

Time & Orbit

Eccentricity (e): 0.196

Orbit Range: 2.72 AU - 4.04 AU

Year: 4076 Days

Day: 7.3 Hours

Environment

Temp: -205 °C

Axial Tilt: 41 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 71,412,431 km

• M1: 169,046 km (0.09 R)
• M2: 595,848 km (0.087 R)
• M3: 2,690,667 km (0.064 R)
• M4: 3,824,320 km (0.043 R)
• M5: 4,297,797 km (0.092 R)
• M6: 6,258,427 km (0.04 R)
• M7: 7,116,820 km (0.106 R)
• M8: 7,980,149 km (0.074 R)
• M9: 8,758,357 km (0.074 R)
• M10: 10,683,682 km (0.072 R)
• M11: 11,353,730 km (0.062 R)
• M12: 12,484,092 km (0.095 R)
• M13: 13,688,205 km (0.06 R)
• M14: 16,737,907 km (0.075 R)
• M15: 17,337,496 km (0.097 R)
• M16: 18,899,297 km (0.089 R)
• M17: 24,223,037 km (0.102 R)
• M18: 26,655,648 km (0.081 R)

Planet 6 - Gas Giant

Semi-Major Axis: 4.03 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 903.4

Radius: 10

Gravity: 9.03 G

Time & Orbit

Eccentricity (e): 0.066

Orbit Range: 3.76 AU - 4.3 AU

Year: 5307 Days

Day: 11.2 Hours

Environment

Temp: -211 °C

Axial Tilt: 35.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (31)

Outer Limit: 71,412,431 km

• M1: 126,560 km (0.104 R)
• M2: 437,723 km (0.117 R)
• M3: 756,068 km (0.034 R)
• M4: 1,228,348 km (0.095 R)
• M5: 1,673,402 km (0.086 R)
• M6: 2,053,231 km (0.047 R)
• M7: 3,129,438 km (0.101 R)
• M8: 3,968,981 km (0.097 R)
• M9: 4,415,980 km (0.086 R)
• M10: 4,924,014 km (0.11 R)
• M11: 5,774,328 km (0.087 R)
• M12: 7,651,931 km (0.098 R)
• M13: 8,627,608 km (0.106 R)
• M14: 9,640,236 km (0.07 R)
• M15: 10,450,309 km (0.089 R)
• M16: 12,673,782 km (0.116 R)
• M17: 13,207,697 km (0.091 R)
• M18: 13,701,071 km (0.053 R)
• M19: 14,899,948 km (0.047 R)
• M20: 16,605,663 km (0.068 R)
• M21: 17,768,487 km (0.103 R)
• M22: 20,692,078 km (0.12 R)
• M23: 21,809,724 km (0.074 R)
• M24: 22,191,049 km (0.103 R)
• M25: 23,203,378 km (0.101 R)
• M26: 25,236,263 km (0.116 R)
• M27: 27,208,861 km (0.086 R)
• M28: 29,005,830 km (0.113 R)
• M29: 29,374,589 km (0.108 R)
• M30: 31,458,637 km (0.051 R)
• M31: 33,437,069 km (0.046 R)

Planet 7 - Ice Giant

Semi-Major Axis: 7.37 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 502.6

Radius: 3.2

Gravity: 49.08 G

Time & Orbit

Eccentricity (e): 0.084

Orbit Range: 6.75 AU - 7.99 AU

Year: 13125 Days

Day: 21.7 Hours

Environment

Temp: -227 °C

Axial Tilt: 56.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (26)

Outer Limit: 71,412,431 km

• M1: 39,793 km (0.104 R)
• M2: 170,093 km (0.092 R)
• M3: 645,515 km (0.106 R)
• M4: 1,059,153 km (0.111 R)
• M5: 2,004,163 km (0.119 R)
• M6: 2,166,327 km (0.049 R)
• M7: 2,279,273 km (0.114 R)
• M8: 3,454,514 km (0.117 R)
• M9: 3,741,144 km (0.112 R)
• M10: 5,314,165 km (0.035 R)
• M11: 5,911,360 km (0.081 R)
• M12: 7,237,695 km (0.083 R)
• M13: 11,058,723 km (0.093 R)
• M14: 12,501,894 km (0.106 R)
• M15: 21,887,216 km (0.113 R)
• M16: 22,238,771 km (0.039 R)
• M17: 22,862,743 km (0.029 R)
• M18: 23,224,471 km (0.066 R)
• M19: 23,590,088 km (0.12 R)
• M20: 25,864,574 km (0.09 R)
• M21: 27,971,062 km (0.086 R)
• M22: 29,543,784 km (0.094 R)
• M23: 37,666,500 km (0.04 R)
• M24: 44,440,291 km (0.115 R)
• M25: 48,483,174 km (0.079 R)
• M26: 50,593,401 km (0.07 R)

Planet 8 - Ice Giant

Semi-Major Axis: 10.5 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 454.7

Radius: 8

Gravity: 7.1 G

Time & Orbit

Eccentricity (e): 0.245

Orbit Range: 7.93 AU - 13.07 AU

Year: 22320 Days

Day: 23.5 Hours

Environment

Temp: -240 °C

Axial Tilt: 1.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (32)

Outer Limit: 71,412,431 km

• M1: 104,419 km (0.085 R)
• M2: 402,717 km (0.093 R)
• M3: 967,150 km (0.083 R)
• M4: 1,338,452 km (0.073 R)
• M5: 1,930,261 km (0.106 R)
• M6: 2,392,668 km (0.088 R)
• M7: 4,836,798 km (0.064 R)
• M8: 5,159,780 km (0.117 R)
• M9: 7,646,097 km (0.045 R)
• M10: 9,897,096 km (0.081 R)
• M11: 11,391,279 km (0.073 R)
• M12: 12,356,784 km (0.069 R)
• M13: 14,303,352 km (0.081 R)
• M14: 16,206,685 km (0.111 R)
• M15: 17,593,607 km (0.119 R)
• M16: 20,047,611 km (0.11 R)
• M17: 20,601,721 km (0.072 R)
• M18: 21,740,460 km (0.072 R)
• M19: 22,920,638 km (0.101 R)
• M20: 23,526,360 km (0.087 R)
• M21: 24,770,116 km (0.044 R)
• M22: 25,839,442 km (0.032 R)
• M23: 29,468,387 km (0.113 R)
• M24: 31,900,998 km (0.091 R)
• M25: 33,681,512 km (0.054 R)
• M26: 37,857,985 km (0.103 R)
• M27: 40,581,265 km (0.074 R)
• M28: 46,094,395 km (0.092 R)
• M29: 50,203,699 km (0.074 R)
• M30: 55,811,226 km (0.088 R)
• M31: 58,577,889 km (0.07 R)
• M32: 61,048,497 km (0.079 R)

Kuiper Belt

Range: 30 - 57 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 182 - 12,658 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit