🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.28 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.55 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.52

Radius: 1.65

Gravity: 1.29 G

Time & Orbit

Eccentricity (e): 0.025

Orbit Range: 0.54 AU - 0.56 AU

Year: 263 Days

Day: 15.8 Hours

Environment

Temp: -115 °C

Axial Tilt: 41.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 50,028,956 km

• M1: 90,656 km (0.092 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.69 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 541.2

Radius: 14.7

Gravity: 2.5 G

Time & Orbit

Eccentricity (e): 0.194

Orbit Range: 0.56 AU - 0.82 AU

Year: 370 Days

Day: 6.9 Hours

Environment

Temp: -141 °C

Axial Tilt: 38.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 50,028,956 km

• M1: 186,549 km (0.101 R)
• M2: 656,136 km (0.067 R)
• M3: 1,126,472 km (0.099 R)
• M4: 1,633,609 km (0.085 R)
• M5: 2,134,163 km (0.075 R)
• M6: 2,971,163 km (0.092 R)
• M7: 3,500,590 km (0.072 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.93 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 484.3

Radius: 9.7

Gravity: 5.15 G

Time & Orbit

Eccentricity (e): 0.041

Orbit Range: 0.89 AU - 0.97 AU

Year: 579 Days

Day: 5.6 Hours

Environment

Temp: -159 °C

Axial Tilt: 6.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 50,028,956 km

• M1: 121,473 km (0.098 R)
• M2: 644,019 km (0.09 R)
• M3: 982,110 km (0.105 R)
• M4: 1,481,917 km (0.081 R)
• M5: 1,842,747 km (0.105 R)
• M6: 2,403,140 km (0.045 R)
• M7: 2,755,593 km (0.082 R)
• M8: 3,603,514 km (0.069 R)
• M9: 4,292,860 km (0.039 R)
• M10: 4,753,323 km (0.087 R)
• M11: 5,083,784 km (0.09 R)
• M12: 5,463,165 km (0.109 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.18 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 214.9

Radius: 12.2

Gravity: 1.44 G

Time & Orbit

Eccentricity (e): 0.17

Orbit Range: 1.81 AU - 2.55 AU

Year: 2078 Days

Day: 9.9 Hours

Environment

Temp: -200 °C

Axial Tilt: 17.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 50,028,956 km

• M1: 151,692 km (0.038 R)
• M2: 568,023 km (0.057 R)
• M3: 993,031 km (0.093 R)
• M4: 1,839,904 km (0.091 R)
• M5: 2,250,850 km (0.115 R)
• M6: 3,052,545 km (0.055 R)
• M7: 3,497,748 km (0.045 R)
• M8: 4,290,617 km (0.08 R)
• M9: 5,121,034 km (0.093 R)
• M10: 6,033,881 km (0.116 R)
• M11: 6,930,869 km (0.112 R)
• M12: 7,994,061 km (0.093 R)
• M13: 9,427,807 km (0.083 R)

Planet 5 - Gas Giant

Semi-Major Axis: 4.46 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 405.2

Radius: 9.5

Gravity: 4.49 G

Time & Orbit

Eccentricity (e): 0.183

Orbit Range: 3.64 AU - 5.28 AU

Year: 6082 Days

Day: 14.6 Hours

Environment

Temp: -219 °C

Axial Tilt: 84.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 50,028,956 km

• M1: 118,182 km (0.104 R)
• M2: 416,181 km (0.117 R)
• M3: 1,362,089 km (0.083 R)
• M4: 1,931,608 km (0.112 R)
• M5: 2,437,249 km (0.096 R)
• M6: 2,917,906 km (0.116 R)
• M7: 3,259,738 km (0.106 R)
• M8: 4,186,048 km (0.079 R)
• M9: 4,547,626 km (0.076 R)
• M10: 7,040,076 km (0.058 R)
• M11: 8,017,548 km (0.088 R)
• M12: 8,964,652 km (0.065 R)
• M13: 10,989,160 km (0.074 R)
• M14: 11,539,531 km (0.077 R)
• M15: 16,506,031 km (0.111 R)
• M16: 19,256,388 km (0.077 R)
• M17: 20,259,890 km (0.059 R)
• M18: 21,368,410 km (0.07 R)
• M19: 22,589,877 km (0.08 R)
• M20: 26,533,576 km (0.113 R)
• M21: 27,025,753 km (0.111 R)
• M22: 27,524,063 km (0.092 R)

Planet 6 - Gas Giant

Semi-Major Axis: 5.31 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 218.2

Radius: 9.4

Gravity: 2.47 G

Time & Orbit

Eccentricity (e): 0.153

Orbit Range: 4.5 AU - 6.12 AU

Year: 7901 Days

Day: 10.8 Hours

Environment

Temp: -228 °C

Axial Tilt: 36.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 50,028,956 km

• M1: 121,473 km (0.083 R)
• M2: 438,471 km (0.12 R)
• M3: 846,724 km (0.103 R)
• M4: 1,416,692 km (0.103 R)
• M5: 1,820,905 km (0.06 R)
• M6: 2,723,878 km (0.117 R)
• M7: 3,140,508 km (0.117 R)
• M8: 3,856,184 km (0.098 R)
• M9: 5,330,771 km (0.041 R)
• M10: 7,627,397 km (0.079 R)
• M11: 8,993,226 km (0.094 R)
• M12: 9,962,321 km (0.037 R)
• M13: 11,452,166 km (0.119 R)
• M14: 12,394,932 km (0.12 R)
• M15: 13,185,706 km (0.079 R)
• M16: 14,115,157 km (0.077 R)
• M17: 16,570,507 km (0.091 R)
• M18: 18,589,331 km (0.096 R)
• M19: 19,297,228 km (0.101 R)
• M20: 25,701,213 km (0.116 R)
• M21: 26,418,386 km (0.065 R)

Planet 7 - Gas Giant

Semi-Major Axis: 5.85 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 143.5

Radius: 10.4

Gravity: 1.33 G

Time & Orbit

Eccentricity (e): 0.098

Orbit Range: 5.28 AU - 6.42 AU

Year: 9136 Days

Day: 11.4 Hours

Environment

Temp: -225 °C

Axial Tilt: 4.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 50,028,956 km

• M1: 129,402 km (0.111 R)
• M2: 493,523 km (0.083 R)
• M3: 901,178 km (0.105 R)
• M4: 1,263,204 km (0.103 R)
• M5: 2,133,864 km (0.069 R)
• M6: 3,060,922 km (0.045 R)
• M7: 3,523,927 km (0.063 R)
• M8: 5,043,243 km (0.115 R)
• M9: 5,719,725 km (0.105 R)
• M10: 7,797,939 km (0.114 R)
• M11: 9,838,454 km (0.089 R)
• M12: 10,463,324 km (0.081 R)
• M13: 12,787,476 km (0.081 R)
• M14: 13,531,875 km (0.113 R)
• M15: 14,252,488 km (0.119 R)
• M16: 15,714,209 km (0.119 R)
• M17: 16,977,264 km (0.075 R)
• M18: 18,996,985 km (0.119 R)
• M19: 19,769,658 km (0.058 R)
• M20: 20,900,019 km (0.061 R)
• M21: 21,309,020 km (0.072 R)
• M22: 25,004,686 km (0.07 R)
• M23: 25,543,238 km (0.042 R)

Planet 8 - Ice Giant

Semi-Major Axis: 7.15 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 511.1

Radius: 5.7

Gravity: 15.73 G

Time & Orbit

Eccentricity (e): 0.126

Orbit Range: 6.25 AU - 8.05 AU

Year: 12345 Days

Day: 15.7 Hours

Environment

Temp: -215 °C

Axial Tilt: 15.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (35)

Outer Limit: 50,028,956 km

• M1: 70,909 km (0.071 R)
• M2: 253,419 km (0.085 R)
• M3: 482,603 km (0.07 R)
• M4: 735,872 km (0.083 R)
• M5: 1,032,525 km (0.12 R)
• M6: 2,401,794 km (0.092 R)
• M7: 2,642,646 km (0.086 R)
• M8: 3,057,182 km (0.086 R)
• M9: 3,268,265 km (0.108 R)
• M10: 4,042,882 km (0.105 R)
• M11: 4,965,453 km (0.119 R)
• M12: 5,630,415 km (0.092 R)
• M13: 5,984,513 km (0.039 R)
• M14: 6,815,529 km (0.075 R)
• M15: 9,667,762 km (0.092 R)
• M16: 9,919,536 km (0.085 R)
• M17: 10,915,857 km (0.069 R)
• M18: 11,466,228 km (0.081 R)
• M19: 12,682,159 km (0.091 R)
• M20: 16,482,544 km (0.066 R)
• M21: 21,062,782 km (0.099 R)
• M22: 23,235,691 km (0.106 R)
• M23: 25,362,673 km (0.118 R)
• M24: 27,115,362 km (0.07 R)
• M25: 28,021,177 km (0.083 R)
• M26: 31,515,634 km (0.083 R)
• M27: 32,292,496 km (0.074 R)
• M28: 35,647,078 km (0.081 R)
• M29: 37,842,128 km (0.054 R)
• M30: 42,097,290 km (0.11 R)
• M31: 42,499,109 km (0.092 R)
• M32: 43,446,962 km (0.104 R)
• M33: 47,959,881 km (0.101 R)
• M34: 49,135,121 km (0.117 R)
• M35: 50,028,969 km (0.052 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: 525 - 19,280 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit