🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.29 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.57 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.91

Radius: 1.89

Gravity: 1.37 G

Time & Orbit

Eccentricity (e): 0.071

Orbit Range: 0.53 AU - 0.61 AU

Year: 274 Days

Day: 16.2 Hours

Environment

Temp: -132 °C

Axial Tilt: 45 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.88 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 393.2

Radius: 9.5

Gravity: 4.36 G

Time & Orbit

Eccentricity (e): 0.048

Orbit Range: 0.84 AU - 0.92 AU

Year: 525 Days

Day: 13.5 Hours

Environment

Temp: -156 °C

Axial Tilt: 14.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 56,472,896 km

• M1: 118,182 km (0.043 R)
• M2: 473,328 km (0.117 R)
• M3: 830,567 km (0.109 R)
• M4: 1,240,765 km (0.073 R)
• M5: 1,689,708 km (0.066 R)
• M6: 2,351,230 km (0.067 R)
• M7: 2,875,121 km (0.11 R)
• M8: 3,176,412 km (0.066 R)
• M9: 4,089,856 km (0.069 R)
• M10: 4,834,405 km (0.087 R)
• M11: 5,342,140 km (0.083 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.09 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 799

Radius: 14.8

Gravity: 3.65 G

Time & Orbit

Eccentricity (e): 0.09

Orbit Range: 0.99 AU - 1.19 AU

Year: 724 Days

Day: 13.5 Hours

Environment

Temp: -158 °C

Axial Tilt: 12.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 56,472,896 km

• M1: 184,005 km (0.1 R)
• M2: 741,257 km (0.071 R)
• M3: 1,519,765 km (0.069 R)
• M4: 2,401,046 km (0.09 R)
• M5: 3,026,365 km (0.091 R)
• M6: 4,161,214 km (0.032 R)
• M7: 5,359,194 km (0.095 R)
• M8: 6,009,346 km (0.106 R)
• M9: 6,884,793 km (0.109 R)
• M10: 8,012,312 km (0.115 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.29 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 342.9

Radius: 8.4

Gravity: 4.86 G

Time & Orbit

Eccentricity (e): 0.168

Orbit Range: 1.07 AU - 1.51 AU

Year: 932 Days

Day: 10.5 Hours

Environment

Temp: -181 °C

Axial Tilt: 41.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 56,472,896 km

• M1: 104,419 km (0.105 R)
• M2: 579,991 km (0.115 R)
• M3: 860,487 km (0.078 R)
• M4: 1,430,754 km (0.115 R)
• M5: 1,796,371 km (0.095 R)
• M6: 2,136,856 km (0.097 R)
• M7: 2,488,261 km (0.104 R)
• M8: 2,878,113 km (0.093 R)
• M9: 3,256,895 km (0.092 R)
• M10: 3,600,073 km (0.082 R)
• M11: 4,011,168 km (0.097 R)
• M12: 4,484,944 km (0.119 R)
• M13: 4,776,959 km (0.097 R)
• M14: 6,658,152 km (0.063 R)
• M15: 6,974,402 km (0.109 R)
• M16: 7,569,353 km (0.103 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.91 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 820.4

Radius: 12.2

Gravity: 5.51 G

Time & Orbit

Eccentricity (e): 0.248

Orbit Range: 1.44 AU - 2.38 AU

Year: 1678 Days

Day: 14.3 Hours

Environment

Temp: -190 °C

Axial Tilt: 18.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 56,472,896 km

• M1: 152,291 km (0.043 R)
• M2: 586,872 km (0.105 R)
• M3: 1,104,032 km (0.081 R)
• M4: 1,654,253 km (0.117 R)
• M5: 2,091,827 km (0.041 R)
• M6: 2,473,900 km (0.09 R)
• M7: 3,067,355 km (0.116 R)
• M8: 4,172,135 km (0.043 R)
• M9: 4,973,980 km (0.118 R)
• M10: 5,502,808 km (0.117 R)
• M11: 7,655,970 km (0.105 R)
• M12: 9,339,395 km (0.036 R)
• M13: 10,963,430 km (0.074 R)
• M14: 11,977,554 km (0.118 R)
• M15: 12,448,039 km (0.077 R)
• M16: 13,135,441 km (0.107 R)
• M17: 14,322,799 km (0.112 R)

Asteroid Belt

Center: 3.11 AU

Composition

Type: Outer System (Icy)

A dense region of planetesimals and debris.

Boundary

Planet 6 - Gas Giant

Semi-Major Axis: 4.31 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 272.7

Radius: 14.2

Gravity: 1.35 G

Time & Orbit

Eccentricity (e): 0.207

Orbit Range: 3.42 AU - 5.2 AU

Year: 5689 Days

Day: 9.6 Hours

Environment

Temp: -210 °C

Axial Tilt: 20.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 56,472,896 km

• M1: 176,675 km (0.09 R)
• M2: 1,064,090 km (0.069 R)
• M3: 2,251,897 km (0.098 R)
• M4: 2,785,064 km (0.093 R)
• M5: 3,478,450 km (0.092 R)
• M6: 4,218,959 km (0.1 R)
• M7: 5,213,635 km (0.114 R)
• M8: 6,016,078 km (0.114 R)
• M9: 6,506,460 km (0.098 R)
• M10: 8,071,852 km (0.112 R)
• M11: 8,742,200 km (0.097 R)
• M12: 15,198,246 km (0.069 R)
• M13: 16,167,042 km (0.086 R)
• M14: 17,349,015 km (0.116 R)
• M15: 20,330,201 km (0.101 R)

Planet 7 - Ice Giant

Semi-Major Axis: 6.88 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 850.9

Radius: 6.2

Gravity: 22.14 G

Time & Orbit

Eccentricity (e): 0.202

Orbit Range: 5.49 AU - 8.27 AU

Year: 11474 Days

Day: 21.6 Hours

Environment

Temp: -226 °C

Axial Tilt: 19.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 56,472,896 km

• M1: 77,641 km (0.112 R)
• M2: 677,678 km (0.098 R)
• M3: 990,338 km (0.102 R)
• M4: 1,301,950 km (0.089 R)
• M5: 3,051,049 km (0.054 R)
• M6: 4,137,129 km (0.103 R)
• M7: 5,046,834 km (0.111 R)
• M8: 6,431,661 km (0.116 R)
• M9: 9,928,212 km (0.111 R)
• M10: 11,137,561 km (0.076 R)
• M11: 13,713,786 km (0.108 R)
• M12: 20,261,835 km (0.06 R)
• M13: 27,566,848 km (0.09 R)
• M14: 30,719,175 km (0.117 R)
• M15: 30,944,918 km (0.082 R)
• M16: 32,557,134 km (0.097 R)
• M17: 44,278,875 km (0.109 R)
• M18: 50,128,601 km (0.111 R)
• M19: 50,598,787 km (0.037 R)
• M20: 53,319,075 km (0.118 R)
• M21: 55,130,256 km (0.117 R)
• M22: 56,472,897 km (0.077 R)

Kuiper Belt

Range: 30 - 60 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 328 - 20,010 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit