🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.26 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.51 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.91

Radius: 0.96

Gravity: 0.99 G

Time & Orbit

Eccentricity (e): 0.081

Orbit Range: 0.47 AU - 0.55 AU

Year: 232 Days

Day: 13.6 Hours

Environment

Temp: -125 °C

Axial Tilt: 74.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.73 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 404.5

Radius: 12.3

Gravity: 2.67 G

Time & Orbit

Eccentricity (e): 0.207

Orbit Range: 0.58 AU - 0.88 AU

Year: 397 Days

Day: 10 Hours

Environment

Temp: -134 °C

Axial Tilt: 15.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 86,672,747 km

• M1: 153,039 km (0.113 R)
• M2: 543,639 km (0.118 R)
• M3: 1,053,917 km (0.101 R)
• M4: 1,519,615 km (0.096 R)
• M5: 1,927,269 km (0.057 R)
• M6: 2,366,339 km (0.069 R)
• M7: 2,805,409 km (0.103 R)
• M8: 3,214,709 km (0.114 R)
• M9: 4,130,098 km (0.09 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.1 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 942.3

Radius: 14.8

Gravity: 4.3 G

Time & Orbit

Eccentricity (e): 0.203

Orbit Range: 0.88 AU - 1.32 AU

Year: 734 Days

Day: 10.9 Hours

Environment

Temp: -163 °C

Axial Tilt: 35.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 86,672,747 km

• M1: 184,305 km (0.079 R)
• M2: 710,739 km (0.055 R)
• M3: 1,267,992 km (0.073 R)
• M4: 2,084,048 km (0.096 R)
• M5: 2,641,300 km (0.103 R)
• M6: 3,166,239 km (0.098 R)
• M7: 3,790,511 km (0.089 R)
• M8: 5,477,077 km (0.053 R)
• M9: 6,008,748 km (0.115 R)
• M10: 6,683,285 km (0.09 R)
• M11: 7,291,550 km (0.096 R)
• M12: 7,790,010 km (0.06 R)
• M13: 8,516,008 km (0.117 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.46 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 796.4

Radius: 13.5

Gravity: 4.37 G

Time & Orbit

Eccentricity (e): 0.206

Orbit Range: 1.16 AU - 1.76 AU

Year: 1122 Days

Day: 5.1 Hours

Environment

Temp: -173 °C

Axial Tilt: 4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 86,672,747 km

• M1: 168,746 km (0.065 R)
• M2: 869,313 km (0.103 R)
• M3: 1,322,146 km (0.099 R)
• M4: 1,997,431 km (0.073 R)
• M5: 3,459,750 km (0.083 R)
• M6: 4,080,432 km (0.095 R)
• M7: 4,534,760 km (0.033 R)
• M8: 5,023,048 km (0.046 R)
• M9: 5,672,302 km (0.118 R)
• M10: 6,727,117 km (0.069 R)
• M11: 7,314,139 km (0.101 R)
• M12: 8,258,700 km (0.117 R)
• M13: 9,019,405 km (0.115 R)
• M14: 10,844,499 km (0.06 R)
• M15: 11,584,410 km (0.087 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.92 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 282.7

Radius: 14.7

Gravity: 1.31 G

Time & Orbit

Eccentricity (e): 0.143

Orbit Range: 1.65 AU - 2.19 AU

Year: 1692 Days

Day: 12.6 Hours

Environment

Temp: -179 °C

Axial Tilt: 36.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 86,672,747 km

• M1: 182,809 km (0.107 R)
• M2: 700,417 km (0.099 R)
• M3: 1,160,879 km (0.113 R)
• M4: 1,674,599 km (0.11 R)
• M5: 2,386,984 km (0.085 R)
• M6: 3,254,352 km (0.12 R)
• M7: 5,454,338 km (0.112 R)
• M8: 6,057,218 km (0.073 R)
• M9: 6,612,375 km (0.072 R)
• M10: 7,471,815 km (0.114 R)
• M11: 8,190,783 km (0.104 R)
• M12: 8,843,478 km (0.047 R)

Planet 6 - Gas Giant

Semi-Major Axis: 4.15 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 629.4

Radius: 13.2

Gravity: 3.61 G

Time & Orbit

Eccentricity (e): 0.082

Orbit Range: 3.81 AU - 4.49 AU

Year: 5375 Days

Day: 13.1 Hours

Environment

Temp: -204 °C

Axial Tilt: 41.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (26)

Outer Limit: 86,672,747 km

• M1: 164,258 km (0.093 R)
• M2: 829,670 km (0.076 R)
• M3: 1,422,526 km (0.065 R)
• M4: 1,885,681 km (0.112 R)
• M5: 2,338,514 km (0.037 R)
• M6: 2,919,402 km (0.044 R)
• M7: 3,903,308 km (0.113 R)
• M8: 4,398,626 km (0.117 R)
• M9: 4,882,874 km (0.116 R)
• M10: 5,749,794 km (0.12 R)
• M11: 6,882,848 km (0.082 R)
• M12: 7,609,445 km (0.093 R)
• M13: 10,855,869 km (0.091 R)
• M14: 15,502,977 km (0.101 R)
• M15: 16,208,929 km (0.109 R)
• M16: 16,997,908 km (0.092 R)
• M17: 18,652,611 km (0.109 R)
• M18: 19,586,849 km (0.115 R)
• M19: 20,412,181 km (0.07 R)
• M20: 20,833,598 km (0.1 R)
• M21: 21,332,507 km (0.108 R)
• M22: 22,802,007 km (0.05 R)
• M23: 24,732,567 km (0.093 R)
• M24: 26,023,896 km (0.092 R)
• M25: 29,270,619 km (0.102 R)
• M26: 30,258,713 km (0.103 R)

Asteroid Belt

Center: 6.8 AU

Composition

Type: Outer System (Icy)

A dense region of planetesimals and debris.

Boundary

Planet 7 - Ice Giant

Semi-Major Axis: 9.44 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 192.4

Radius: 6.7

Gravity: 4.29 G

Time & Orbit

Eccentricity (e): 0.225

Orbit Range: 7.32 AU - 11.56 AU

Year: 18441 Days

Day: 18.5 Hours

Environment

Temp: -235 °C

Axial Tilt: 21.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 86,672,747 km

• M1: 84,523 km (0.097 R)
• M2: 471,682 km (0.072 R)
• M3: 828,473 km (0.083 R)
• M4: 2,878,562 km (0.059 R)
• M5: 3,777,945 km (0.072 R)
• M6: 4,015,955 km (0.102 R)
• M7: 7,503,530 km (0.032 R)
• M8: 8,139,171 km (0.098 R)
• M9: 11,314,087 km (0.118 R)
• M10: 13,386,167 km (0.077 R)
• M11: 14,447,414 km (0.098 R)
• M12: 14,835,022 km (0.058 R)
• M13: 16,665,652 km (0.114 R)
• M14: 17,525,690 km (0.116 R)
• M15: 21,596,547 km (0.028 R)
• M16: 22,965,667 km (0.06 R)
• M17: 23,228,660 km (0.085 R)
• M18: 29,227,385 km (0.101 R)
• M19: 38,973,536 km (0.089 R)
• M20: 45,668,191 km (0.108 R)

Planet 8 - Ice Giant

Semi-Major Axis: 10.05 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 986.9

Radius: 6.8

Gravity: 21.34 G

Time & Orbit

Eccentricity (e): 0.028

Orbit Range: 9.77 AU - 10.33 AU

Year: 20257 Days

Day: 19.2 Hours

Environment

Temp: -232 °C

Axial Tilt: 23.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (34)

Outer Limit: 86,672,747 km

• M1: 86,468 km (0.092 R)
• M2: 687,851 km (0.065 R)
• M3: 1,327,083 km (0.116 R)
• M4: 1,695,991 km (0.051 R)
• M5: 1,985,313 km (0.117 R)
• M6: 2,689,171 km (0.115 R)
• M7: 3,578,680 km (0.063 R)
• M8: 3,828,958 km (0.106 R)
• M9: 4,124,413 km (0.084 R)
• M10: 5,667,815 km (0.039 R)
• M11: 6,008,748 km (0.101 R)
• M12: 6,228,657 km (0.102 R)
• M13: 6,591,731 km (0.041 R)
• M14: 7,310,698 km (0.037 R)
• M15: 10,523,163 km (0.085 R)
• M16: 12,614,092 km (0.108 R)
• M17: 15,619,065 km (0.083 R)
• M18: 19,164,235 km (0.114 R)
• M19: 20,029,809 km (0.095 R)
• M20: 28,282,973 km (0.06 R)
• M21: 29,911,795 km (0.065 R)
• M22: 37,054,046 km (0.04 R)
• M23: 39,923,782 km (0.119 R)
• M24: 43,264,153 km (0.052 R)
• M25: 45,422,701 km (0.078 R)
• M26: 46,786,136 km (0.065 R)
• M27: 50,494,667 km (0.094 R)
• M28: 52,699,440 km (0.118 R)
• M29: 53,260,582 km (0.051 R)
• M30: 59,495,223 km (0.062 R)
• M31: 65,982,385 km (0.101 R)
• M32: 80,339,592 km (0.074 R)
• M33: 81,830,334 km (0.102 R)
• M34: 82,331,338 km (0.103 R)

Kuiper Belt

Range: 30 - 59 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 406 - 12,069 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit