🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.33 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.66 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.74

Radius: 0.89

Gravity: 0.93 G

Time & Orbit

Eccentricity (e): 0.011

Orbit Range: 0.65 AU - 0.67 AU

Year: 352 Days

Day: 29.5 Hours

Environment

Temp: -140 °C

Axial Tilt: 35.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 46,142,009 km

• M1: 31,715 km (0.119 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.71 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 212.6

Radius: 11.9

Gravity: 1.5 G

Time & Orbit

Eccentricity (e): 0.049

Orbit Range: 0.68 AU - 0.74 AU

Year: 392 Days

Day: 6.9 Hours

Environment

Temp: -130 °C

Axial Tilt: 50 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 46,142,009 km

• M1: 147,952 km (0.114 R)
• M2: 538,702 km (0.1 R)
• M3: 1,178,233 km (0.071 R)
• M4: 1,804,300 km (0.051 R)
• M5: 2,694,407 km (0.092 R)
• M6: 3,273,650 km (0.056 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.88 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 766.1

Radius: 12.2

Gravity: 5.15 G

Time & Orbit

Eccentricity (e): 0.074

Orbit Range: 0.81 AU - 0.95 AU

Year: 542 Days

Day: 11.1 Hours

Environment

Temp: -152 °C

Axial Tilt: 25.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 46,142,009 km

• M1: 151,692 km (0.05 R)
• M2: 581,337 km (0.074 R)
• M3: 1,189,453 km (0.117 R)
• M4: 1,804,898 km (0.07 R)
• M5: 2,257,432 km (0.038 R)
• M6: 2,885,593 km (0.09 R)
• M7: 3,814,895 km (0.047 R)
• M8: 4,805,084 km (0.117 R)
• M9: 5,508,792 km (0.047 R)
• M10: 6,052,431 km (0.103 R)
• M11: 6,572,283 km (0.091 R)
• M12: 6,955,852 km (0.05 R)

Planet 4 - Gas Giant

Semi-Major Axis: 3.34 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 418.7

Radius: 10.5

Gravity: 3.8 G

Time & Orbit

Eccentricity (e): 0.04

Orbit Range: 3.21 AU - 3.47 AU

Year: 4004 Days

Day: 14.2 Hours

Environment

Temp: -200 °C

Axial Tilt: 4.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 46,142,009 km

• M1: 131,048 km (0.029 R)
• M2: 612,902 km (0.11 R)
• M3: 1,080,545 km (0.116 R)
• M4: 2,172,909 km (0.053 R)
• M5: 2,811,393 km (0.098 R)
• M6: 3,219,645 km (0.047 R)
• M7: 3,628,496 km (0.079 R)
• M8: 3,988,728 km (0.069 R)
• M9: 5,117,145 km (0.045 R)
• M10: 7,008,062 km (0.049 R)
• M11: 10,757,882 km (0.112 R)
• M12: 12,966,695 km (0.082 R)
• M13: 13,622,532 km (0.057 R)
• M14: 15,566,107 km (0.075 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.49 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 155.4

Radius: 10.2

Gravity: 1.49 G

Time & Orbit

Eccentricity (e): 0.127

Orbit Range: 3.05 AU - 3.93 AU

Year: 4277 Days

Day: 12.3 Hours

Environment

Temp: -210 °C

Axial Tilt: 21.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 46,142,009 km

• M1: 130,898 km (0.092 R)
• M2: 461,958 km (0.065 R)
• M3: 940,971 km (0.054 R)
• M4: 2,927,032 km (0.094 R)
• M5: 4,464,150 km (0.096 R)
• M6: 6,963,930 km (0.092 R)
• M7: 7,792,703 km (0.107 R)
• M8: 8,370,450 km (0.104 R)
• M9: 9,107,668 km (0.107 R)
• M10: 12,172,480 km (0.091 R)
• M11: 13,373,302 km (0.098 R)
• M12: 14,697,093 km (0.069 R)
• M13: 16,057,835 km (0.037 R)
• M14: 16,496,756 km (0.053 R)

Planet 6 - Gas Giant

Semi-Major Axis: 4 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 85.6

Radius: 9.4

Gravity: 0.97 G

Time & Orbit

Eccentricity (e): 0.204

Orbit Range: 3.18 AU - 4.82 AU

Year: 5248 Days

Day: 11 Hours

Environment

Temp: -219 °C

Axial Tilt: 19.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 46,142,009 km

• M1: 129,402 km (0.057 R)
• M2: 442,211 km (0.095 R)
• M3: 1,279,810 km (0.079 R)
• M4: 2,420,793 km (0.12 R)
• M5: 3,246,872 km (0.089 R)
• M6: 3,577,783 km (0.105 R)
• M7: 4,961,264 km (0.03 R)
• M8: 7,126,693 km (0.044 R)
• M9: 12,685,002 km (0.11 R)
• M10: 13,342,784 km (0.106 R)
• M11: 13,680,127 km (0.116 R)

Planet 7 - Ice Giant

Semi-Major Axis: 7.3 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 129.5

Radius: 7.3

Gravity: 2.43 G

Time & Orbit

Eccentricity (e): 0.014

Orbit Range: 7.2 AU - 7.4 AU

Year: 12939 Days

Day: 18.3 Hours

Environment

Temp: -217 °C

Axial Tilt: 41.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 46,142,009 km

• M1: 90,956 km (0.096 R)
• M2: 383,868 km (0.112 R)
• M3: 935,585 km (0.087 R)
• M4: 1,304,493 km (0.114 R)
• M5: 1,714,242 km (0.118 R)
• M6: 2,098,409 km (0.118 R)
• M7: 2,335,821 km (0.067 R)
• M8: 3,784,078 km (0.079 R)
• M9: 4,885,717 km (0.03 R)
• M10: 5,780,761 km (0.117 R)
• M11: 6,155,204 km (0.051 R)
• M12: 8,831,809 km (0.04 R)
• M13: 9,713,689 km (0.12 R)
• M14: 10,745,465 km (0.073 R)
• M15: 11,168,379 km (0.108 R)
• M16: 11,897,967 km (0.107 R)
• M17: 20,594,092 km (0.072 R)
• M18: 21,320,240 km (0.048 R)
• M19: 23,287,901 km (0.053 R)
• M20: 24,638,171 km (0.116 R)
• M21: 26,377,097 km (0.069 R)
• M22: 28,462,790 km (0.066 R)
• M23: 30,097,596 km (0.1 R)
• M24: 30,375,997 km (0.075 R)

Planet 8 - Ice Giant

Semi-Major Axis: 8.17 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 765.3

Radius: 3.1

Gravity: 79.64 G

Time & Orbit

Eccentricity (e): 0.152

Orbit Range: 6.93 AU - 9.41 AU

Year: 15319 Days

Day: 23.7 Hours

Environment

Temp: -229 °C

Axial Tilt: 6.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 46,142,009 km

• M1: 38,596 km (0.034 R)
• M2: 279,748 km (0.047 R)
• M3: 695,032 km (0.109 R)
• M4: 821,442 km (0.11 R)
• M5: 1,083,089 km (0.079 R)
• M6: 2,522,071 km (0.112 R)
• M7: 2,727,618 km (0.057 R)
• M8: 4,140,719 km (0.1 R)
• M9: 4,862,978 km (0.059 R)
• M10: 5,438,481 km (0.113 R)
• M11: 6,896,911 km (0.078 R)
• M12: 7,162,896 km (0.09 R)
• M13: 10,790,794 km (0.05 R)
• M14: 17,599,741 km (0.095 R)
• M15: 20,264,228 km (0.078 R)
• M16: 21,644,867 km (0.08 R)
• M17: 32,237,892 km (0.108 R)
• M18: 37,673,082 km (0.118 R)
• M19: 39,612,020 km (0.085 R)
• M20: 41,037,239 km (0.076 R)
• M21: 44,901,651 km (0.075 R)
• M22: 57,393,073 km (0.095 R)

Planet 9 - Ice Giant

Semi-Major Axis: 9.39 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 171.5

Radius: 5.7

Gravity: 5.28 G

Time & Orbit

Eccentricity (e): 0.123

Orbit Range: 8.24 AU - 10.54 AU

Year: 18876 Days

Day: 17.5 Hours

Environment

Temp: -226 °C

Axial Tilt: 17.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (26)

Outer Limit: 46,142,009 km

• M1: 163,062 km (0.045 R)
• M2: 456,274 km (0.106 R)
• M3: 816,954 km (0.108 R)
• M4: 1,082,191 km (0.109 R)
• M5: 1,352,514 km (0.111 R)
• M6: 1,623,436 km (0.098 R)
• M7: 2,132,069 km (0.058 R)
• M8: 4,410,594 km (0.075 R)
• M9: 4,673,288 km (0.108 R)
• M10: 5,229,942 km (0.081 R)
• M11: 7,245,174 km (0.087 R)
• M12: 7,904,452 km (0.077 R)
• M13: 8,875,193 km (0.077 R)
• M14: 11,923,100 km (0.11 R)
• M15: 12,490,973 km (0.118 R)
• M16: 12,840,284 km (0.114 R)
• M17: 15,205,726 km (0.046 R)
• M18: 15,873,232 km (0.109 R)
• M19: 19,121,001 km (0.091 R)
• M20: 21,850,115 km (0.098 R)
• M21: 22,872,168 km (0.084 R)
• M22: 25,380,176 km (0.12 R)
• M23: 25,846,623 km (0.103 R)
• M24: 38,214,776 km (0.059 R)
• M25: 44,638,359 km (0.111 R)
• M26: 45,591,297 km (0.071 R)

Kuiper Belt

Range: 30 - 54 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 340 - 17,759 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit