🌌 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: 0.59 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.26

Radius: 1.39

Gravity: 1.17 G

Time & Orbit

Eccentricity (e): 0.138

Orbit Range: 0.51 AU - 0.67 AU

Year: 297 Days

Day: 25 Hours

Environment

Temp: -129 °C

Axial Tilt: 39 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.96 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 880

Radius: 13.5

Gravity: 4.83 G

Time & Orbit

Eccentricity (e): 0.129

Orbit Range: 0.84 AU - 1.08 AU

Year: 617 Days

Day: 11.1 Hours

Environment

Temp: -152 °C

Axial Tilt: 24.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 87,202,807 km

• M1: 167,849 km (0.1 R)
• M2: 601,683 km (0.042 R)
• M3: 1,082,640 km (0.09 R)
• M4: 1,698,684 km (0.109 R)
• M5: 2,417,502 km (0.093 R)
• M6: 4,037,347 km (0.06 R)
• M7: 5,010,033 km (0.118 R)
• M8: 5,579,851 km (0.049 R)
• M9: 6,153,110 km (0.115 R)
• M10: 7,108,442 km (0.108 R)
• M11: 7,829,803 km (0.093 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.27 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 361.5

Radius: 9.1

Gravity: 4.37 G

Time & Orbit

Eccentricity (e): 0.148

Orbit Range: 1.08 AU - 1.46 AU

Year: 939 Days

Day: 5.4 Hours

Environment

Temp: -160 °C

Axial Tilt: 13 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 87,202,807 km

• M1: 113,694 km (0.111 R)
• M2: 460,163 km (0.115 R)
• M3: 1,069,924 km (0.118 R)
• M4: 1,808,638 km (0.09 R)
• M5: 2,289,595 km (0.095 R)
• M6: 3,119,265 km (0.108 R)
• M7: 3,481,292 km (0.119 R)
• M8: 3,827,910 km (0.067 R)
• M9: 4,415,082 km (0.062 R)
• M10: 4,805,383 km (0.113 R)
• M11: 5,183,417 km (0.085 R)
• M12: 5,999,174 km (0.109 R)
• M13: 7,447,281 km (0.097 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.34 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 279.5

Radius: 11.9

Gravity: 1.97 G

Time & Orbit

Eccentricity (e): 0.069

Orbit Range: 1.25 AU - 1.43 AU

Year: 1018 Days

Day: 14.5 Hours

Environment

Temp: -176 °C

Axial Tilt: 24.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 87,202,807 km

• M1: 148,102 km (0.095 R)
• M2: 616,493 km (0.078 R)
• M3: 1,204,412 km (0.115 R)
• M4: 1,638,695 km (0.048 R)
• M5: 2,112,621 km (0.097 R)
• M6: 3,056,584 km (0.075 R)
• M7: 3,458,404 km (0.104 R)
• M8: 3,967,186 km (0.106 R)
• M9: 4,605,071 km (0.053 R)
• M10: 5,951,751 km (0.1 R)
• M11: 6,341,155 km (0.073 R)

Planet 5 - Ice Giant

Semi-Major Axis: 7.75 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 263

Radius: 5.3

Gravity: 9.36 G

Time & Orbit

Eccentricity (e): 0.249

Orbit Range: 5.82 AU - 9.68 AU

Year: 14153 Days

Day: 19.2 Hours

Environment

Temp: -234 °C

Axial Tilt: 125.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (38)

Outer Limit: 87,202,807 km

• M1: 90,058 km (0.074 R)
• M2: 296,952 km (0.114 R)
• M3: 477,816 km (0.109 R)
• M4: 695,181 km (0.112 R)
• M5: 1,261,708 km (0.095 R)
• M6: 2,111,873 km (0.092 R)
• M7: 3,456,010 km (0.093 R)
• M8: 3,826,863 km (0.117 R)
• M9: 4,334,150 km (0.101 R)
• M10: 4,885,268 km (0.06 R)
• M11: 5,193,440 km (0.083 R)
• M12: 5,646,572 km (0.103 R)
• M13: 5,882,787 km (0.104 R)
• M14: 6,267,253 km (0.095 R)
• M15: 6,668,475 km (0.11 R)
• M16: 8,059,286 km (0.06 R)
• M17: 11,942,398 km (0.092 R)
• M18: 12,332,100 km (0.067 R)
• M19: 13,078,295 km (0.101 R)
• M20: 13,612,060 km (0.083 R)
• M21: 15,106,692 km (0.102 R)
• M22: 15,562,517 km (0.099 R)
• M23: 18,639,595 km (0.085 R)
• M24: 20,556,842 km (0.069 R)
• M25: 21,278,203 km (0.088 R)
• M26: 22,265,848 km (0.106 R)
• M27: 23,370,030 km (0.104 R)
• M28: 25,963,758 km (0.051 R)
• M29: 26,617,351 km (0.067 R)
• M30: 28,348,497 km (0.052 R)
• M31: 30,667,863 km (0.094 R)
• M32: 31,398,050 km (0.045 R)
• M33: 32,033,093 km (0.05 R)
• M34: 34,323,436 km (0.103 R)
• M35: 36,837,578 km (0.086 R)
• M36: 39,840,307 km (0.066 R)
• M37: 40,834,684 km (0.111 R)
• M38: 43,132,058 km (0.087 R)

Planet 6 - Ice Giant

Semi-Major Axis: 10.56 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 813.9

Radius: 4.3

Gravity: 44.02 G

Time & Orbit

Eccentricity (e): 0.212

Orbit Range: 8.32 AU - 12.8 AU

Year: 22512 Days

Day: 22.4 Hours

Environment

Temp: -221 °C

Axial Tilt: 42 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 87,202,807 km

• M1: 54,902 km (0.113 R)
• M2: 219,610 km (0.086 R)
• M3: 397,182 km (0.098 R)
• M4: 561,740 km (0.095 R)
• M5: 815,308 km (0.098 R)
• M6: 1,464,862 km (0.081 R)
• M7: 1,638,845 km (0.119 R)
• M8: 2,359,757 km (0.081 R)
• M9: 3,213,961 km (0.096 R)
• M10: 4,686,153 km (0.056 R)
• M11: 11,277,286 km (0.064 R)
• M12: 15,032,641 km (0.066 R)
• M13: 15,771,954 km (0.11 R)
• M14: 17,590,615 km (0.105 R)
• M15: 19,352,280 km (0.102 R)
• M16: 21,432,438 km (0.083 R)
• M17: 25,914,241 km (0.102 R)
• M18: 34,095,599 km (0.114 R)
• M19: 35,944,180 km (0.115 R)
• M20: 42,533,816 km (0.108 R)
• M21: 53,009,407 km (0.094 R)
• M22: 54,715,421 km (0.087 R)
• M23: 55,485,401 km (0.079 R)
• M24: 80,332,561 km (0.071 R)

Kuiper Belt

Range: 30 - 60 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 467 - 15,694 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit