🌌 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: 3.28

Radius: 1.61

Gravity: 1.27 G

Time & Orbit

Eccentricity (e): 0.019

Orbit Range: 0.58 AU - 0.6 AU

Year: 293 Days

Day: 32.3 Hours

Environment

Temp: -131 °C

Axial Tilt: 31.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 33,267,365 km

• M1: 99,333 km (0.108 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.69 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 224

Radius: 11.5

Gravity: 1.69 G

Time & Orbit

Eccentricity (e): 0.011

Orbit Range: 0.68 AU - 0.7 AU

Year: 370 Days

Day: 13.8 Hours

Environment

Temp: -143 °C

Axial Tilt: 1.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 33,267,365 km

• M1: 143,016 km (0.079 R)
• M2: 523,144 km (0.12 R)
• M3: 896,690 km (0.104 R)
• M4: 1,641,687 km (0.115 R)
• M5: 2,369,032 km (0.086 R)
• M6: 3,290,405 km (0.101 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.75 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 335.9

Radius: 11.2

Gravity: 2.68 G

Time & Orbit

Eccentricity (e): 0.226

Orbit Range: 0.58 AU - 0.92 AU

Year: 419 Days

Day: 14.2 Hours

Environment

Temp: -150 °C

Axial Tilt: 20.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 33,267,365 km

• M1: 139,425 km (0.083 R)
• M2: 493,374 km (0.106 R)
• M3: 937,081 km (0.114 R)
• M4: 1,342,790 km (0.084 R)
• M5: 1,790,238 km (0.089 R)
• M6: 2,278,974 km (0.082 R)
• M7: 2,817,526 km (0.106 R)
• M8: 3,417,863 km (0.088 R)
• M9: 3,848,555 km (0.054 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.48 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 564.6

Radius: 9.7

Gravity: 6 G

Time & Orbit

Eccentricity (e): 0.019

Orbit Range: 1.45 AU - 1.51 AU

Year: 1163 Days

Day: 11.3 Hours

Environment

Temp: -173 °C

Axial Tilt: 28.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 33,267,365 km

• M1: 120,576 km (0.106 R)
• M2: 435,928 km (0.118 R)
• M3: 828,922 km (0.096 R)
• M4: 1,254,977 km (0.06 R)
• M5: 1,778,120 km (0.055 R)
• M6: 2,830,691 km (0.098 R)
• M7: 3,275,595 km (0.111 R)
• M8: 4,154,183 km (0.074 R)
• M9: 4,712,183 km (0.066 R)
• M10: 5,418,884 km (0.119 R)
• M11: 5,745,605 km (0.12 R)
• M12: 6,416,552 km (0.098 R)
• M13: 6,782,767 km (0.033 R)
• M14: 7,211,365 km (0.108 R)
• M15: 7,810,954 km (0.1 R)
• M16: 8,497,757 km (0.073 R)
• M17: 9,455,782 km (0.068 R)
• M18: 9,870,617 km (0.116 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.41 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 603.7

Radius: 12.7

Gravity: 3.74 G

Time & Orbit

Eccentricity (e): 0.13

Orbit Range: 2.1 AU - 2.72 AU

Year: 2416 Days

Day: 14 Hours

Environment

Temp: -189 °C

Axial Tilt: 19.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 33,267,365 km

• M1: 160,668 km (0.097 R)
• M2: 593,305 km (0.093 R)
• M3: 1,104,631 km (0.114 R)
• M4: 1,980,526 km (0.112 R)
• M5: 2,529,251 km (0.064 R)
• M6: 4,920,872 km (0.053 R)
• M7: 5,400,633 km (0.069 R)
• M8: 6,534,884 km (0.073 R)
• M9: 7,230,514 km (0.12 R)
• M10: 8,935,032 km (0.115 R)
• M11: 10,078,409 km (0.1 R)
• M12: 11,200,542 km (0.073 R)
• M13: 12,115,932 km (0.038 R)
• M14: 12,654,933 km (0.101 R)
• M15: 13,736,675 km (0.081 R)
• M16: 14,368,875 km (0.118 R)
• M17: 16,837,240 km (0.093 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.2 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 450.2

Radius: 14

Gravity: 2.3 G

Time & Orbit

Eccentricity (e): 0.075

Orbit Range: 2.96 AU - 3.44 AU

Year: 3696 Days

Day: 10.8 Hours

Environment

Temp: -200 °C

Axial Tilt: 4.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 33,267,365 km

• M1: 175,030 km (0.1 R)
• M2: 616,792 km (0.101 R)
• M3: 1,184,067 km (0.096 R)
• M4: 2,725,075 km (0.092 R)
• M5: 3,184,789 km (0.114 R)
• M6: 4,414,484 km (0.078 R)
• M7: 5,599,448 km (0.055 R)
• M8: 6,378,554 km (0.103 R)
• M9: 7,697,558 km (0.029 R)
• M10: 8,186,743 km (0.091 R)
• M11: 9,227,645 km (0.082 R)
• M12: 10,238,179 km (0.063 R)
• M13: 11,446,331 km (0.057 R)
• M14: 12,259,246 km (0.12 R)
• M15: 12,837,442 km (0.051 R)
• M16: 13,715,282 km (0.089 R)
• M17: 15,283,816 km (0.072 R)
• M18: 17,353,652 km (0.108 R)
• M19: 17,913,148 km (0.089 R)
• M20: 20,768,523 km (0.105 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.38 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 350.4

Radius: 11.8

Gravity: 2.52 G

Time & Orbit

Eccentricity (e): 0.036

Orbit Range: 3.26 AU - 3.5 AU

Year: 4012 Days

Day: 7.3 Hours

Environment

Temp: -214 °C

Axial Tilt: 16.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 33,267,365 km

• M1: 148,999 km (0.069 R)
• M2: 734,226 km (0.076 R)
• M3: 1,403,677 km (0.069 R)
• M4: 1,839,455 km (0.066 R)
• M5: 2,612,876 km (0.118 R)
• M6: 3,725,137 km (0.113 R)
• M7: 4,421,215 km (0.069 R)
• M8: 5,886,078 km (0.069 R)
• M9: 6,291,338 km (0.04 R)
• M10: 6,860,858 km (0.067 R)
• M11: 9,490,190 km (0.056 R)
• M12: 10,472,898 km (0.053 R)
• M13: 11,480,589 km (0.12 R)
• M14: 12,029,614 km (0.071 R)
• M15: 13,363,578 km (0.08 R)
• M16: 13,971,394 km (0.103 R)
• M17: 15,957,605 km (0.077 R)
• M18: 18,012,780 km (0.12 R)
• M19: 20,117,174 km (0.072 R)
• M20: 20,729,777 km (0.09 R)

Planet 8 - Gas Giant

Semi-Major Axis: 4.53 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 492.7

Radius: 8.3

Gravity: 7.15 G

Time & Orbit

Eccentricity (e): 0.062

Orbit Range: 4.25 AU - 4.81 AU

Year: 6225 Days

Day: 11.7 Hours

Environment

Temp: -205 °C

Axial Tilt: 34.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 33,267,365 km

• M1: 103,223 km (0.08 R)
• M2: 417,677 km (0.106 R)
• M3: 795,711 km (0.116 R)
• M4: 1,245,253 km (0.088 R)
• M5: 1,571,376 km (0.111 R)
• M6: 1,842,896 km (0.098 R)
• M7: 2,366,190 km (0.116 R)
• M8: 3,888,348 km (0.113 R)
• M9: 4,146,404 km (0.092 R)
• M10: 4,440,962 km (0.12 R)
• M11: 6,611,029 km (0.111 R)
• M12: 9,075,504 km (0.11 R)
• M13: 10,003,011 km (0.09 R)
• M14: 10,534,832 km (0.111 R)
• M15: 16,504,983 km (0.056 R)
• M16: 19,815,285 km (0.106 R)
• M17: 24,723,143 km (0.102 R)
• M18: 25,941,767 km (0.078 R)
• M19: 29,207,339 km (0.106 R)

Planet 9 - Ice Giant

Semi-Major Axis: 6.61 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 190.2

Radius: 5

Gravity: 7.61 G

Time & Orbit

Eccentricity (e): 0.003

Orbit Range: 6.59 AU - 6.63 AU

Year: 10973 Days

Day: 23.8 Hours

Environment

Temp: -220 °C

Axial Tilt: 34.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 33,267,365 km

• M1: 62,682 km (0.073 R)
• M2: 521,199 km (0.103 R)
• M3: 752,776 km (0.093 R)
• M4: 1,090,120 km (0.115 R)
• M5: 2,016,729 km (0.053 R)
• M6: 3,108,195 km (0.096 R)
• M7: 4,492,873 km (0.099 R)
• M8: 5,647,170 km (0.085 R)
• M9: 6,276,528 km (0.087 R)
• M10: 8,404,708 km (0.096 R)
• M11: 10,923,038 km (0.087 R)
• M12: 12,199,557 km (0.1 R)
• M13: 13,354,752 km (0.113 R)
• M14: 14,753,791 km (0.1 R)
• M15: 16,683,603 km (0.12 R)
• M16: 17,384,021 km (0.076 R)
• M17: 23,156,554 km (0.094 R)
• M18: 23,392,021 km (0.12 R)
• M19: 27,553,983 km (0.049 R)
• M20: 28,262,628 km (0.112 R)
• M21: 30,180,622 km (0.087 R)

Kuiper Belt

Range: 30 - 58 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 439 - 19,226 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit