🌌 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: 0.63 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.86

Radius: 1.52

Gravity: 1.24 G

Time & Orbit

Eccentricity (e): 0.231

Orbit Range: 0.48 AU - 0.78 AU

Year: 318 Days

Day: 23.3 Hours

Environment

Temp: -126 °C

Axial Tilt: 36.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.68 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 831.8

Radius: 14.1

Gravity: 4.18 G

Time & Orbit

Eccentricity (e): 0.186

Orbit Range: 0.55 AU - 0.81 AU

Year: 357 Days

Day: 10.2 Hours

Environment

Temp: -133 °C

Axial Tilt: 19.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 65,839,665 km

• M1: 177,124 km (0.111 R)
• M2: 1,282,652 km (0.112 R)
• M3: 1,877,004 km (0.071 R)
• M4: 2,429,320 km (0.082 R)
• M5: 3,133,028 km (0.115 R)
• M6: 4,151,341 km (0.081 R)
• M7: 5,333,014 km (0.088 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.81 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 436

Radius: 11.7

Gravity: 3.19 G

Time & Orbit

Eccentricity (e): 0.046

Orbit Range: 0.77 AU - 0.85 AU

Year: 464 Days

Day: 14.6 Hours

Environment

Temp: -138 °C

Axial Tilt: 105.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 65,839,665 km

• M1: 148,551 km (0.054 R)
• M2: 571,464 km (0.058 R)
• M3: 1,059,153 km (0.11 R)
• M4: 2,417,202 km (0.09 R)
• M5: 3,083,063 km (0.074 R)
• M6: 3,805,919 km (0.078 R)
• M7: 5,090,965 km (0.107 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.74 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 357.7

Radius: 12.6

Gravity: 2.25 G

Time & Orbit

Eccentricity (e): 0.21

Orbit Range: 1.37 AU - 2.11 AU

Year: 1459 Days

Day: 5.8 Hours

Environment

Temp: -179 °C

Axial Tilt: 21.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 65,839,665 km

• M1: 157,527 km (0.104 R)
• M2: 695,032 km (0.068 R)
• M3: 1,329,925 km (0.036 R)
• M4: 2,018,075 km (0.055 R)
• M5: 2,681,392 km (0.11 R)
• M6: 3,160,105 km (0.081 R)
• M7: 5,493,982 km (0.097 R)
• M8: 7,341,067 km (0.107 R)
• M9: 8,127,353 km (0.112 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.79 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 200.6

Radius: 11.6

Gravity: 1.49 G

Time & Orbit

Eccentricity (e): 0.058

Orbit Range: 1.69 AU - 1.89 AU

Year: 1523 Days

Day: 6.2 Hours

Environment

Temp: -192 °C

Axial Tilt: 124.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 65,839,665 km

• M1: 145,858 km (0.113 R)
• M2: 520,750 km (0.082 R)
• M3: 1,274,275 km (0.027 R)
• M4: 1,960,181 km (0.119 R)
• M5: 2,867,043 km (0.064 R)
• M6: 3,341,268 km (0.109 R)
• M7: 4,803,887 km (0.076 R)
• M8: 5,707,608 km (0.069 R)
• M9: 6,569,441 km (0.075 R)
• M10: 6,986,969 km (0.107 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.64 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 896.3

Radius: 9.9

Gravity: 9.14 G

Time & Orbit

Eccentricity (e): 0.014

Orbit Range: 2.6 AU - 2.68 AU

Year: 2727 Days

Day: 13.1 Hours

Environment

Temp: -196 °C

Axial Tilt: 22 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 65,839,665 km

• M1: 124,017 km (0.084 R)
• M2: 641,476 km (0.105 R)
• M3: 1,104,032 km (0.04 R)
• M4: 1,656,497 km (0.062 R)
• M5: 2,930,173 km (0.068 R)
• M6: 4,162,262 km (0.1 R)
• M7: 7,017,187 km (0.039 R)
• M8: 7,773,255 km (0.057 R)
• M9: 8,409,495 km (0.08 R)
• M10: 9,043,939 km (0.116 R)
• M11: 9,447,106 km (0.113 R)
• M12: 11,139,805 km (0.114 R)
• M13: 11,948,681 km (0.111 R)
• M14: 12,434,575 km (0.1 R)
• M15: 13,731,140 km (0.12 R)
• M16: 19,340,013 km (0.109 R)
• M17: 19,826,056 km (0.116 R)
• M18: 20,320,178 km (0.064 R)

Planet 7 - Ice Giant

Semi-Major Axis: 9 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 690.6

Radius: 6

Gravity: 19.18 G

Time & Orbit

Eccentricity (e): 0.009

Orbit Range: 8.92 AU - 9.08 AU

Year: 17167 Days

Day: 24.8 Hours

Environment

Temp: -218 °C

Axial Tilt: 19.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (31)

Outer Limit: 65,839,665 km

• M1: 74,649 km (0.036 R)
• M2: 316,399 km (0.093 R)
• M3: 539,300 km (0.119 R)
• M4: 945,309 km (0.094 R)
• M5: 1,490,593 km (0.085 R)
• M6: 1,823,897 km (0.1 R)
• M7: 2,267,305 km (0.049 R)
• M8: 2,481,529 km (0.119 R)
• M9: 3,128,241 km (0.076 R)
• M10: 3,533,053 km (0.087 R)
• M11: 4,715,325 km (0.114 R)
• M12: 5,174,441 km (0.072 R)
• M13: 6,140,394 km (0.116 R)
• M14: 6,995,496 km (0.087 R)
• M15: 7,592,391 km (0.112 R)
• M16: 11,156,261 km (0.056 R)
• M17: 14,647,427 km (0.072 R)
• M18: 16,242,888 km (0.11 R)
• M19: 17,204,653 km (0.072 R)
• M20: 23,786,211 km (0.061 R)
• M21: 24,194,464 km (0.1 R)
• M22: 25,024,881 km (0.105 R)
• M23: 26,305,888 km (0.097 R)
• M24: 32,115,970 km (0.098 R)
• M25: 42,497,015 km (0.097 R)
• M26: 45,402,355 km (0.083 R)
• M27: 47,304,043 km (0.097 R)
• M28: 48,274,485 km (0.097 R)
• M29: 49,921,258 km (0.078 R)
• M30: 51,096,050 km (0.077 R)
• M31: 58,534,206 km (0.067 R)

Planet 8 - Ice Giant

Semi-Major Axis: 9.44 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 522

Radius: 4

Gravity: 32.63 G

Time & Orbit

Eccentricity (e): 0.21

Orbit Range: 7.46 AU - 11.42 AU

Year: 18441 Days

Day: 20.3 Hours

Environment

Temp: -221 °C

Axial Tilt: 38.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (38)

Outer Limit: 65,839,665 km

• M1: 49,966 km (0.117 R)
• M2: 254,466 km (0.049 R)
• M3: 712,684 km (0.105 R)
• M4: 914,492 km (0.072 R)
• M5: 1,260,212 km (0.112 R)
• M6: 2,205,521 km (0.115 R)
• M7: 3,170,727 km (0.068 R)
• M8: 4,485,243 km (0.068 R)
• M9: 5,207,801 km (0.044 R)
• M10: 5,730,795 km (0.117 R)
• M11: 7,462,839 km (0.094 R)
• M12: 13,288,629 km (0.095 R)
• M13: 16,111,691 km (0.112 R)
• M14: 17,621,582 km (0.112 R)
• M15: 17,950,996 km (0.105 R)
• M16: 19,136,560 km (0.075 R)
• M17: 19,925,688 km (0.084 R)
• M18: 22,040,404 km (0.084 R)
• M19: 22,422,776 km (0.073 R)
• M20: 25,538,152 km (0.096 R)
• M21: 28,363,607 km (0.032 R)
• M22: 29,619,331 km (0.068 R)
• M23: 31,270,443 km (0.026 R)
• M24: 31,996,591 km (0.11 R)
• M25: 32,610,092 km (0.111 R)
• M26: 33,987,439 km (0.08 R)
• M27: 36,991,813 km (0.086 R)
• M28: 39,603,344 km (0.068 R)
• M29: 43,822,303 km (0.064 R)
• M30: 46,742,902 km (0.11 R)
• M31: 49,301,025 km (0.119 R)
• M32: 50,448,890 km (0.11 R)
• M33: 51,112,656 km (0.064 R)
• M34: 53,999,147 km (0.081 R)
• M35: 54,345,765 km (0.089 R)
• M36: 55,394,296 km (0.038 R)
• M37: 58,256,403 km (0.081 R)
• M38: 61,215,598 km (0.052 R)

Kuiper Belt

Range: 30 - 56 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 184 - 11,473 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit