🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.27 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.53 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.33

Radius: 1.62

Gravity: 1.27 G

Time & Orbit

Eccentricity (e): 0.174

Orbit Range: 0.44 AU - 0.62 AU

Year: 253 Days

Day: 16.7 Hours

Environment

Temp: -115 °C

Axial Tilt: 13.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.85 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 203

Radius: 13.7

Gravity: 1.08 G

Time & Orbit

Eccentricity (e): 0.128

Orbit Range: 0.74 AU - 0.96 AU

Year: 514 Days

Day: 11.1 Hours

Environment

Temp: -156 °C

Axial Tilt: 21.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (5)

Outer Limit: 32,804,343 km

• M1: 175,030 km (0.119 R)
• M2: 720,763 km (0.071 R)
• M3: 1,397,244 km (0.086 R)
• M4: 2,170,815 km (0.055 R)
• M5: 2,742,578 km (0.101 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.94 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 683.1

Radius: 8.1

Gravity: 10.41 G

Time & Orbit

Eccentricity (e): 0.002

Orbit Range: 0.94 AU - 0.94 AU

Year: 598 Days

Day: 6.4 Hours

Environment

Temp: -158 °C

Axial Tilt: 5.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 32,804,343 km

• M1: 100,679 km (0.037 R)
• M2: 413,040 km (0.06 R)
• M3: 836,252 km (0.037 R)
• M4: 1,133,802 km (0.077 R)
• M5: 1,764,208 km (0.111 R)
• M6: 2,411,667 km (0.114 R)
• M7: 2,762,474 km (0.06 R)
• M8: 4,024,332 km (0.063 R)
• M9: 5,174,441 km (0.082 R)
• M10: 5,560,403 km (0.056 R)
• M11: 5,871,866 km (0.105 R)
• M12: 6,350,878 km (0.105 R)
• M13: 6,691,363 km (0.107 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.34 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 819.3

Radius: 10.2

Gravity: 7.87 G

Time & Orbit

Eccentricity (e): 0.167

Orbit Range: 1.12 AU - 1.56 AU

Year: 1018 Days

Day: 7.3 Hours

Environment

Temp: -170 °C

Axial Tilt: 12.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 32,804,343 km

• M1: 127,009 km (0.089 R)
• M2: 492,925 km (0.081 R)
• M3: 921,822 km (0.094 R)
• M4: 1,294,321 km (0.059 R)
• M5: 1,624,334 km (0.045 R)
• M6: 2,973,856 km (0.076 R)
• M7: 3,635,228 km (0.055 R)
• M8: 3,984,689 km (0.067 R)
• M9: 4,587,419 km (0.106 R)
• M10: 5,035,016 km (0.111 R)
• M11: 6,039,864 km (0.069 R)
• M12: 7,648,939 km (0.117 R)
• M13: 8,252,866 km (0.108 R)
• M14: 8,860,083 km (0.072 R)
• M15: 9,408,060 km (0.106 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.95 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 218.8

Radius: 9.2

Gravity: 2.59 G

Time & Orbit

Eccentricity (e): 0.085

Orbit Range: 1.78 AU - 2.12 AU

Year: 1786 Days

Day: 8.6 Hours

Environment

Temp: -180 °C

Axial Tilt: 38.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 32,804,343 km

• M1: 114,442 km (0.044 R)
• M2: 423,512 km (0.081 R)
• M3: 1,002,007 km (0.098 R)
• M4: 1,900,192 km (0.095 R)
• M5: 3,150,681 km (0.04 R)
• M6: 3,762,087 km (0.108 R)
• M7: 5,317,905 km (0.071 R)
• M8: 6,271,891 km (0.063 R)
• M9: 7,859,872 km (0.111 R)
• M10: 9,293,469 km (0.054 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.01 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 140.7

Radius: 14.2

Gravity: 0.7 G

Time & Orbit

Eccentricity (e): 0.051

Orbit Range: 1.91 AU - 2.11 AU

Year: 1869 Days

Day: 7.4 Hours

Environment

Temp: -183 °C

Axial Tilt: 8.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 32,804,343 km

• M1: 176,525 km (0.117 R)
• M2: 635,941 km (0.087 R)
• M3: 1,946,268 km (0.107 R)
• M4: 2,795,984 km (0.063 R)
• M5: 3,287,563 km (0.052 R)
• M6: 3,926,944 km (0.062 R)
• M7: 5,250,885 km (0.079 R)
• M8: 6,378,404 km (0.08 R)
• M9: 7,709,825 km (0.049 R)
• M10: 9,084,032 km (0.117 R)

Planet 7 - Gas Giant

Semi-Major Axis: 2.07 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 432.2

Radius: 8.2

Gravity: 6.43 G

Time & Orbit

Eccentricity (e): 0.223

Orbit Range: 1.61 AU - 2.53 AU

Year: 1954 Days

Day: 11.7 Hours

Environment

Temp: -181 °C

Axial Tilt: 115.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 32,804,343 km

• M1: 102,026 km (0.094 R)
• M2: 591,360 km (0.118 R)
• M3: 1,062,893 km (0.056 R)
• M4: 2,350,781 km (0.109 R)
• M5: 2,727,768 km (0.114 R)
• M6: 3,114,628 km (0.085 R)
• M7: 3,754,757 km (0.099 R)
• M8: 4,088,211 km (0.104 R)
• M9: 4,441,411 km (0.082 R)
• M10: 4,714,577 km (0.076 R)
• M11: 5,209,147 km (0.116 R)
• M12: 5,945,169 km (0.104 R)
• M13: 6,423,882 km (0.114 R)
• M14: 6,902,296 km (0.091 R)
• M15: 7,323,265 km (0.098 R)
• M16: 8,130,195 km (0.1 R)
• M17: 11,624,054 km (0.103 R)
• M18: 13,113,600 km (0.114 R)

Planet 8 - Gas Giant

Semi-Major Axis: 4.55 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 253

Radius: 14.3

Gravity: 1.24 G

Time & Orbit

Eccentricity (e): 0.073

Orbit Range: 4.22 AU - 4.88 AU

Year: 6367 Days

Day: 13.4 Hours

Environment

Temp: -217 °C

Axial Tilt: 2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 32,804,343 km

• M1: 177,872 km (0.092 R)
• M2: 703,409 km (0.03 R)
• M3: 1,233,883 km (0.074 R)
• M4: 2,077,316 km (0.098 R)
• M5: 2,590,138 km (0.075 R)
• M6: 3,151,429 km (0.103 R)
• M7: 3,919,315 km (0.075 R)
• M8: 4,405,807 km (0.091 R)
• M9: 5,083,784 km (0.117 R)
• M10: 5,858,402 km (0.1 R)
• M11: 6,588,440 km (0.05 R)
• M12: 7,312,793 km (0.082 R)
• M13: 7,779,538 km (0.105 R)
• M14: 10,010,042 km (0.114 R)
• M15: 11,671,626 km (0.11 R)
• M16: 12,310,858 km (0.041 R)
• M17: 14,011,636 km (0.105 R)
• M18: 14,473,295 km (0.115 R)
• M19: 15,051,341 km (0.111 R)
• M20: 17,284,538 km (0.101 R)
• M21: 18,055,715 km (0.115 R)
• M22: 18,911,714 km (0.081 R)
• M23: 20,837,188 km (0.069 R)

Planet 9 - Gas Giant

Semi-Major Axis: 5.39 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 490.3

Radius: 9

Gravity: 6.05 G

Time & Orbit

Eccentricity (e): 0.114

Orbit Range: 4.78 AU - 6 AU

Year: 8209 Days

Day: 9.7 Hours

Environment

Temp: -221 °C

Axial Tilt: 27.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 32,804,343 km

• M1: 111,899 km (0.041 R)
• M2: 527,482 km (0.07 R)
• M3: 943,514 km (0.097 R)
• M4: 3,154,570 km (0.118 R)
• M5: 6,145,630 km (0.112 R)
• M6: 6,943,735 km (0.072 R)
• M7: 7,462,391 km (0.1 R)
• M8: 7,887,847 km (0.05 R)
• M9: 9,044,238 km (0.084 R)
• M10: 10,168,915 km (0.101 R)
• M11: 10,692,358 km (0.073 R)
• M12: 11,333,834 km (0.062 R)
• M13: 13,984,708 km (0.1 R)
• M14: 14,812,134 km (0.112 R)
• M15: 15,671,873 km (0.114 R)
• M16: 17,966,255 km (0.038 R)
• M17: 37,031,756 km (0.107 R)

Planet 10 - Ice Giant

Semi-Major Axis: 6.37 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 197.4

Radius: 4

Gravity: 12.34 G

Time & Orbit

Eccentricity (e): 0.239

Orbit Range: 4.85 AU - 7.89 AU

Year: 10547 Days

Day: 23.4 Hours

Environment

Temp: -217 °C

Axial Tilt: 1.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 32,804,343 km

• M1: 49,816 km (0.116 R)
• M2: 357,389 km (0.088 R)
• M3: 612,304 km (0.117 R)
• M4: 3,175,963 km (0.072 R)
• M5: 4,144,011 km (0.114 R)
• M6: 7,521,033 km (0.078 R)
• M7: 8,636,135 km (0.113 R)
• M8: 9,170,050 km (0.073 R)
• M9: 15,474,254 km (0.111 R)
• M10: 16,946,148 km (0.088 R)
• M11: 29,759,504 km (0.106 R)

Kuiper Belt

Range: 30 - 56 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 504 - 14,426 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit