🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.31 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.62 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.59

Radius: 1.84

Gravity: 1.36 G

Time & Orbit

Eccentricity (e): 0.111

Orbit Range: 0.55 AU - 0.69 AU

Year: 320 Days

Day: 13.4 Hours

Environment

Temp: -120 °C

Axial Tilt: 33.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.87 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 440.4

Radius: 10.6

Gravity: 3.92 G

Time & Orbit

Eccentricity (e): 0.037

Orbit Range: 0.84 AU - 0.9 AU

Year: 532 Days

Day: 6.2 Hours

Environment

Temp: -149 °C

Axial Tilt: 37.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 22,727,866 km

• M1: 131,945 km (0.06 R)
• M2: 498,011 km (0.089 R)
• M3: 1,208,452 km (0.032 R)
• M4: 1,653,206 km (0.065 R)
• M5: 2,086,292 km (0.113 R)
• M6: 2,469,562 km (0.07 R)
• M7: 3,094,881 km (0.09 R)
• M8: 3,784,377 km (0.097 R)
• M9: 4,317,395 km (0.069 R)
• M10: 4,854,601 km (0.028 R)
• M11: 5,484,856 km (0.077 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.23 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 616.2

Radius: 11.6

Gravity: 4.58 G

Time & Orbit

Eccentricity (e): 0.049

Orbit Range: 1.17 AU - 1.29 AU

Year: 895 Days

Day: 5.9 Hours

Environment

Temp: -164 °C

Axial Tilt: 43.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 22,727,866 km

• M1: 144,212 km (0.087 R)
• M2: 763,248 km (0.08 R)
• M3: 1,236,277 km (0.118 R)
• M4: 2,102,897 km (0.115 R)
• M5: 2,800,173 km (0.114 R)
• M6: 3,164,145 km (0.108 R)
• M7: 3,777,496 km (0.067 R)
• M8: 4,160,466 km (0.062 R)
• M9: 4,637,384 km (0.1 R)
• M10: 5,298,757 km (0.053 R)
• M11: 5,880,244 km (0.1 R)
• M12: 6,721,582 km (0.077 R)
• M13: 7,427,235 km (0.039 R)
• M14: 8,435,824 km (0.066 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.65 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 27.1

Radius: 14.8

Gravity: 0.12 G

Time & Orbit

Eccentricity (e): 0.188

Orbit Range: 1.34 AU - 1.96 AU

Year: 1390 Days

Day: 9.3 Hours

Environment

Temp: -184 °C

Axial Tilt: 7.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (5)

Outer Limit: 22,727,866 km

• M1: 187,596 km (0.057 R)
• M2: 648,507 km (0.026 R)
• M3: 1,407,866 km (0.085 R)
• M4: 3,036,089 km (0.104 R)
• M5: 3,739,199 km (0.081 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.72 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 542.6

Radius: 12.2

Gravity: 3.65 G

Time & Orbit

Eccentricity (e): 0.196

Orbit Range: 1.38 AU - 2.06 AU

Year: 1480 Days

Day: 12.9 Hours

Environment

Temp: -189 °C

Axial Tilt: 19.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 22,727,866 km

• M1: 151,842 km (0.118 R)
• M2: 834,906 km (0.078 R)
• M3: 1,291,030 km (0.093 R)
• M4: 1,674,599 km (0.105 R)
• M5: 2,362,300 km (0.068 R)
• M6: 2,772,647 km (0.099 R)
• M7: 3,364,606 km (0.085 R)
• M8: 3,954,620 km (0.088 R)
• M9: 4,409,846 km (0.106 R)
• M10: 4,880,481 km (0.113 R)
• M11: 5,553,223 km (0.048 R)
• M12: 7,312,793 km (0.066 R)
• M13: 8,278,297 km (0.088 R)
• M14: 8,704,801 km (0.073 R)
• M15: 10,331,528 km (0.073 R)
• M16: 10,893,867 km (0.111 R)
• M17: 11,511,407 km (0.051 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.58 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 869.5

Radius: 9.9

Gravity: 8.87 G

Time & Orbit

Eccentricity (e): 0.25

Orbit Range: 1.94 AU - 3.23 AU

Year: 2719 Days

Day: 9.1 Hours

Environment

Temp: -192 °C

Axial Tilt: 38.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 22,727,866 km

• M1: 123,119 km (0.1 R)
• M2: 495,019 km (0.089 R)
• M3: 852,857 km (0.054 R)
• M4: 1,228,947 km (0.119 R)
• M5: 1,593,965 km (0.1 R)
• M6: 2,163,036 km (0.093 R)
• M7: 2,518,181 km (0.079 R)
• M8: 3,012,752 km (0.066 R)
• M9: 4,283,286 km (0.086 R)
• M10: 4,824,382 km (0.094 R)
• M11: 5,668,263 km (0.098 R)
• M12: 6,125,584 km (0.111 R)
• M13: 6,578,417 km (0.079 R)
• M14: 7,114,426 km (0.044 R)
• M15: 8,582,579 km (0.111 R)
• M16: 10,126,130 km (0.087 R)
• M17: 10,519,273 km (0.109 R)
• M18: 11,004,719 km (0.062 R)
• M19: 13,282,645 km (0.069 R)
• M20: 13,849,920 km (0.113 R)
• M21: 18,867,433 km (0.09 R)
• M22: 20,072,444 km (0.096 R)

Asteroid Belt

Center: 4.84 AU

Composition

Type: Outer System (Icy)

A dense region of planetesimals and debris.

Boundary

Planet 7 - Ice Giant

Semi-Major Axis: 7.1 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 130.2

Radius: 7.9

Gravity: 2.09 G

Time & Orbit

Eccentricity (e): 0.138

Orbit Range: 6.12 AU - 8.08 AU

Year: 12411 Days

Day: 18.5 Hours

Environment

Temp: -231 °C

Axial Tilt: 62.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 22,727,866 km

• M1: 98,286 km (0.087 R)
• M2: 344,524 km (0.113 R)
• M3: 896,390 km (0.091 R)
• M4: 1,615,956 km (0.111 R)
• M5: 2,449,067 km (0.102 R)
• M6: 3,288,460 km (0.103 R)
• M7: 3,541,879 km (0.079 R)
• M8: 4,233,321 km (0.108 R)
• M9: 4,534,012 km (0.099 R)
• M10: 4,875,694 km (0.067 R)
• M11: 5,234,579 km (0.042 R)
• M12: 6,548,796 km (0.098 R)
• M13: 8,299,540 km (0.085 R)
• M14: 9,387,266 km (0.051 R)
• M15: 9,770,087 km (0.119 R)
• M16: 16,712,027 km (0.116 R)
• M17: 18,504,359 km (0.057 R)
• M18: 19,378,459 km (0.099 R)
• M19: 19,721,936 km (0.113 R)
• M20: 25,455,723 km (0.112 R)
• M21: 26,452,195 km (0.083 R)
• M22: 27,216,490 km (0.057 R)
• M23: 31,637,706 km (0.067 R)

Planet 8 - Ice Giant

Semi-Major Axis: 8.8 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 24.9

Radius: 6.7

Gravity: 0.55 G

Time & Orbit

Eccentricity (e): 0.249

Orbit Range: 6.61 AU - 10.99 AU

Year: 17125 Days

Day: 18.1 Hours

Environment

Temp: -235 °C

Axial Tilt: 32.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 22,727,866 km

• M1: 83,326 km (0.084 R)
• M2: 412,292 km (0.108 R)
• M3: 889,659 km (0.091 R)
• M4: 1,489,546 km (0.053 R)
• M5: 1,947,315 km (0.084 R)
• M6: 2,301,862 km (0.076 R)
• M7: 3,304,168 km (0.055 R)
• M8: 4,805,383 km (0.03 R)
• M9: 6,302,109 km (0.027 R)
• M10: 8,051,806 km (0.065 R)
• M11: 8,291,163 km (0.116 R)
• M12: 9,001,453 km (0.08 R)
• M13: 9,828,879 km (0.063 R)
• M14: 10,301,010 km (0.105 R)
• M15: 20,750,421 km (0.108 R)
• M16: 21,007,131 km (0.115 R)

Kuiper Belt

Range: 30 - 50 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 446 - 13,014 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit