🌌 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: 0.64 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.38

Radius: 1.41

Gravity: 1.2 G

Time & Orbit

Eccentricity (e): 0.185

Orbit Range: 0.52 AU - 0.76 AU

Year: 336 Days

Day: 30.6 Hours

Environment

Temp: -136 °C

Axial Tilt: 40 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 71,643,222 km

• M1: 137,480 km (0.106 R)
• M2: 595,848 km (0.107 R)

Planet 2 - Gas Giant

Semi-Major Axis: 1.1 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 334

Radius: 13.5

Gravity: 1.83 G

Time & Orbit

Eccentricity (e): 0.183

Orbit Range: 0.9 AU - 1.3 AU

Year: 757 Days

Day: 9.9 Hours

Environment

Temp: -156 °C

Axial Tilt: 3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 71,643,222 km

• M1: 167,998 km (0.081 R)
• M2: 791,971 km (0.039 R)
• M3: 1,239,269 km (0.03 R)
• M4: 1,942,379 km (0.053 R)
• M5: 2,718,044 km (0.077 R)
• M6: 3,279,485 km (0.112 R)
• M7: 3,705,090 km (0.112 R)
• M8: 4,398,626 km (0.07 R)
• M9: 5,095,453 km (0.114 R)
• M10: 5,775,824 km (0.065 R)
• M11: 6,306,448 km (0.114 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.93 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 119.2

Radius: 9.4

Gravity: 1.35 G

Time & Orbit

Eccentricity (e): 0.086

Orbit Range: 1.76 AU - 2.1 AU

Year: 1759 Days

Day: 5.8 Hours

Environment

Temp: -189 °C

Axial Tilt: 0.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 71,643,222 km

• M1: 116,986 km (0.112 R)
• M2: 422,764 km (0.043 R)
• M3: 766,390 km (0.108 R)
• M4: 1,428,660 km (0.103 R)
• M5: 2,982,682 km (0.089 R)
• M6: 3,352,787 km (0.11 R)
• M7: 3,696,264 km (0.088 R)
• M8: 4,170,340 km (0.111 R)
• M9: 5,009,285 km (0.043 R)
• M10: 5,441,323 km (0.103 R)
• M11: 5,800,807 km (0.044 R)
• M12: 6,155,952 km (0.065 R)
• M13: 7,129,984 km (0.12 R)
• M14: 7,630,838 km (0.113 R)
• M15: 8,009,620 km (0.084 R)
• M16: 8,376,134 km (0.066 R)

Planet 4 - Gas Giant

Semi-Major Axis: 3.32 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 105.7

Radius: 11

Gravity: 0.87 G

Time & Orbit

Eccentricity (e): 0.027

Orbit Range: 3.23 AU - 3.41 AU

Year: 3968 Days

Day: 14.1 Hours

Environment

Temp: -203 °C

Axial Tilt: 3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 71,643,222 km

• M1: 138,976 km (0.12 R)
• M2: 522,994 km (0.119 R)
• M3: 867,518 km (0.055 R)
• M4: 1,423,125 km (0.042 R)
• M5: 1,773,932 km (0.078 R)
• M6: 3,350,095 km (0.11 R)
• M7: 3,723,641 km (0.102 R)
• M8: 4,289,869 km (0.093 R)
• M9: 5,182,818 km (0.054 R)
• M10: 5,821,003 km (0.086 R)
• M11: 6,171,361 km (0.089 R)
• M12: 7,254,749 km (0.074 R)
• M13: 8,972,431 km (0.1 R)
• M14: 9,827,982 km (0.03 R)
• M15: 12,567,268 km (0.1 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.69 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 19.2

Radius: 8.9

Gravity: 0.24 G

Time & Orbit

Eccentricity (e): 0.007

Orbit Range: 3.66 AU - 3.72 AU

Year: 4650 Days

Day: 13.8 Hours

Environment

Temp: -219 °C

Axial Tilt: 28.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 71,643,222 km

• M1: 113,545 km (0.116 R)
• M2: 638,484 km (0.106 R)
• M3: 1,035,367 km (0.067 R)
• M4: 1,316,910 km (0.033 R)
• M5: 1,811,630 km (0.103 R)
• M6: 2,524,314 km (0.107 R)
• M7: 7,346,153 km (0.116 R)
• M8: 7,961,299 km (0.051 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.73 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 335.2

Radius: 10.3

Gravity: 3.16 G

Time & Orbit

Eccentricity (e): 0.099

Orbit Range: 3.36 AU - 4.1 AU

Year: 4726 Days

Day: 5.1 Hours

Environment

Temp: -210 °C

Axial Tilt: 4.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (27)

Outer Limit: 71,643,222 km

• M1: 128,056 km (0.086 R)
• M2: 820,245 km (0.101 R)
• M3: 1,521,859 km (0.11 R)
• M4: 1,990,998 km (0.113 R)
• M5: 2,711,910 km (0.111 R)
• M6: 3,716,460 km (0.114 R)
• M7: 4,415,381 km (0.075 R)
• M8: 5,559,206 km (0.084 R)
• M9: 6,415,355 km (0.1 R)
• M10: 6,829,741 km (0.103 R)
• M11: 7,356,924 km (0.104 R)
• M12: 8,147,399 km (0.065 R)
• M13: 9,437,681 km (0.066 R)
• M14: 9,974,588 km (0.049 R)
• M15: 10,859,459 km (0.074 R)
• M16: 11,193,960 km (0.066 R)
• M17: 11,752,259 km (0.117 R)
• M18: 12,373,988 km (0.094 R)
• M19: 12,739,007 km (0.109 R)
• M20: 17,757,866 km (0.103 R)
• M21: 18,458,283 km (0.103 R)
• M22: 19,420,796 km (0.115 R)
• M23: 20,353,090 km (0.118 R)
• M24: 20,926,648 km (0.106 R)
• M25: 21,576,650 km (0.107 R)
• M26: 21,972,935 km (0.085 R)
• M27: 22,441,476 km (0.098 R)

Planet 7 - Ice Giant

Semi-Major Axis: 6.27 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 276.9

Radius: 3.9

Gravity: 18.21 G

Time & Orbit

Eccentricity (e): 0.205

Orbit Range: 4.98 AU - 7.56 AU

Year: 10299 Days

Day: 17.2 Hours

Environment

Temp: -223 °C

Axial Tilt: 35.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (27)

Outer Limit: 71,643,222 km

• M1: 53,556 km (0.088 R)
• M2: 248,632 km (0.114 R)
• M3: 407,205 km (0.099 R)
• M4: 697,724 km (0.105 R)
• M5: 2,482,128 km (0.113 R)
• M6: 4,192,032 km (0.106 R)
• M7: 5,301,749 km (0.075 R)
• M8: 6,387,679 km (0.025 R)
• M9: 8,002,439 km (0.058 R)
• M10: 9,291,075 km (0.103 R)
• M11: 9,870,318 km (0.082 R)
• M12: 10,663,785 km (0.119 R)
• M13: 11,051,543 km (0.059 R)
• M14: 12,482,895 km (0.119 R)
• M15: 13,804,144 km (0.111 R)
• M16: 14,794,631 km (0.113 R)
• M17: 15,894,175 km (0.076 R)
• M18: 17,046,827 km (0.039 R)
• M19: 20,762,838 km (0.029 R)
• M20: 22,689,210 km (0.112 R)
• M21: 24,731,370 km (0.089 R)
• M22: 27,973,755 km (0.12 R)
• M23: 30,414,294 km (0.103 R)
• M24: 33,505,136 km (0.079 R)
• M25: 34,335,404 km (0.095 R)
• M26: 34,545,140 km (0.111 R)
• M27: 36,037,080 km (0.097 R)

Planet 8 - Ice Giant

Semi-Major Axis: 8.45 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 880.9

Radius: 5.6

Gravity: 28.09 G

Time & Orbit

Eccentricity (e): 0.114

Orbit Range: 7.49 AU - 9.41 AU

Year: 16114 Days

Day: 20.9 Hours

Environment

Temp: -218 °C

Axial Tilt: 21.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (34)

Outer Limit: 71,643,222 km

• M1: 84,373 km (0.117 R)
• M2: 592,258 km (0.058 R)
• M3: 1,779,317 km (0.1 R)
• M4: 2,021,516 km (0.065 R)
• M5: 2,393,117 km (0.059 R)
• M6: 5,602,889 km (0.099 R)
• M7: 5,800,059 km (0.102 R)
• M8: 6,945,829 km (0.084 R)
• M9: 11,655,918 km (0.11 R)
• M10: 12,173,676 km (0.113 R)
• M11: 13,185,556 km (0.104 R)
• M12: 15,222,331 km (0.087 R)
• M13: 15,919,308 km (0.097 R)
• M14: 21,500,056 km (0.05 R)
• M15: 21,984,155 km (0.041 R)
• M16: 22,278,115 km (0.073 R)
• M17: 25,795,011 km (0.095 R)
• M18: 26,895,752 km (0.076 R)
• M19: 27,913,018 km (0.07 R)
• M20: 33,128,748 km (0.084 R)
• M21: 34,165,760 km (0.086 R)
• M22: 38,389,207 km (0.12 R)
• M23: 39,677,544 km (0.088 R)
• M24: 44,805,011 km (0.105 R)
• M25: 48,513,243 km (0.078 R)
• M26: 50,526,830 km (0.106 R)
• M27: 52,246,757 km (0.104 R)
• M28: 54,005,430 km (0.101 R)
• M29: 55,621,536 km (0.114 R)
• M30: 57,826,309 km (0.106 R)
• M31: 59,897,791 km (0.072 R)
• M32: 62,801,485 km (0.066 R)
• M33: 63,195,676 km (0.069 R)
• M34: 64,188,258 km (0.075 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: 510 - 17,445 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit