🌌 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: 0.6 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.87

Radius: 1.88

Gravity: 1.38 G

Time & Orbit

Eccentricity (e): 0.235

Orbit Range: 0.46 AU - 0.74 AU

Year: 305 Days

Day: 41.4 Hours

Environment

Temp: -137 °C

Axial Tilt: 25.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 1 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 474

Radius: 13.6

Gravity: 2.56 G

Time & Orbit

Eccentricity (e): 0.218

Orbit Range: 0.78 AU - 1.22 AU

Year: 656 Days

Day: 7.3 Hours

Environment

Temp: -156 °C

Axial Tilt: 24.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 31,569,165 km

• M1: 169,195 km (0.09 R)
• M2: 894,595 km (0.076 R)
• M3: 1,376,001 km (0.091 R)
• M4: 1,859,202 km (0.047 R)
• M5: 2,407,927 km (0.117 R)
• M6: 2,862,106 km (0.063 R)
• M7: 3,288,311 km (0.069 R)
• M8: 3,783,929 km (0.107 R)
• M9: 4,227,785 km (0.091 R)
• M10: 4,975,625 km (0.108 R)
• M11: 6,481,178 km (0.067 R)

Planet 3 - Gas Giant

Semi-Major Axis: 2.05 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 765.3

Radius: 9.7

Gravity: 8.13 G

Time & Orbit

Eccentricity (e): 0.039

Orbit Range: 1.97 AU - 2.13 AU

Year: 1925 Days

Day: 7.9 Hours

Environment

Temp: -187 °C

Axial Tilt: 39.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 31,569,165 km

• M1: 120,576 km (0.085 R)
• M2: 455,675 km (0.091 R)
• M3: 1,009,786 km (0.119 R)
• M4: 1,466,508 km (0.101 R)
• M5: 2,178,594 km (0.045 R)
• M6: 2,889,782 km (0.107 R)
• M7: 3,416,815 km (0.116 R)
• M8: 4,178,867 km (0.105 R)
• M9: 5,791,981 km (0.083 R)
• M10: 6,983,378 km (0.098 R)
• M11: 7,933,624 km (0.11 R)
• M12: 8,455,720 km (0.049 R)
• M13: 9,568,579 km (0.099 R)
• M14: 11,037,181 km (0.114 R)
• M15: 11,688,231 km (0.081 R)
• M16: 12,122,963 km (0.075 R)
• M17: 13,621,634 km (0.06 R)
• M18: 14,778,175 km (0.084 R)
• M19: 15,100,559 km (0.119 R)
• M20: 15,711,516 km (0.108 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.47 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 274.9

Radius: 14.5

Gravity: 1.31 G

Time & Orbit

Eccentricity (e): 0.004

Orbit Range: 2.46 AU - 2.48 AU

Year: 2547 Days

Day: 8.7 Hours

Environment

Temp: -190 °C

Axial Tilt: 49.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 31,569,165 km

• M1: 180,415 km (0.074 R)
• M2: 771,327 km (0.11 R)
• M3: 1,334,712 km (0.062 R)
• M4: 1,860,698 km (0.113 R)
• M5: 2,450,563 km (0.101 R)
• M6: 3,194,513 km (0.042 R)
• M7: 3,805,321 km (0.063 R)
• M8: 4,417,176 km (0.058 R)
• M9: 5,502,658 km (0.081 R)
• M10: 6,759,131 km (0.069 R)
• M11: 7,253,552 km (0.106 R)
• M12: 7,800,332 km (0.119 R)
• M13: 8,672,039 km (0.039 R)
• M14: 13,542,198 km (0.113 R)
• M15: 13,995,330 km (0.068 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.29 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 582.8

Radius: 14.4

Gravity: 2.81 G

Time & Orbit

Eccentricity (e): 0.21

Orbit Range: 2.6 AU - 3.98 AU

Year: 3915 Days

Day: 5.1 Hours

Environment

Temp: -203 °C

Axial Tilt: 28.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 31,569,165 km

• M1: 179,218 km (0.12 R)
• M2: 767,437 km (0.096 R)
• M3: 1,352,365 km (0.101 R)
• M4: 1,817,764 km (0.09 R)
• M5: 2,451,760 km (0.119 R)
• M6: 2,948,574 km (0.097 R)
• M7: 3,811,903 km (0.118 R)
• M8: 4,484,645 km (0.114 R)
• M9: 5,009,285 km (0.109 R)
• M10: 6,041,211 km (0.066 R)
• M11: 6,866,243 km (0.117 R)
• M12: 7,468,075 km (0.115 R)
• M13: 8,070,506 km (0.117 R)
• M14: 9,719,972 km (0.06 R)
• M15: 10,357,558 km (0.06 R)
• M16: 10,896,111 km (0.115 R)
• M17: 13,530,529 km (0.099 R)
• M18: 15,048,349 km (0.099 R)
• M19: 15,794,394 km (0.108 R)
• M20: 17,360,384 km (0.119 R)
• M21: 18,601,149 km (0.054 R)
• M22: 23,802,816 km (0.089 R)

Planet 6 - Gas Giant

Semi-Major Axis: 5.16 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 226.2

Radius: 12.3

Gravity: 1.5 G

Time & Orbit

Eccentricity (e): 0.217

Orbit Range: 4.04 AU - 6.28 AU

Year: 7689 Days

Day: 12.7 Hours

Environment

Temp: -223 °C

Axial Tilt: 3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 31,569,165 km

• M1: 158,873 km (0.083 R)
• M2: 650,302 km (0.058 R)
• M3: 1,857,258 km (0.12 R)
• M4: 2,351,679 km (0.089 R)
• M5: 3,135,422 km (0.078 R)
• M6: 4,483,299 km (0.103 R)
• M7: 5,274,372 km (0.08 R)
• M8: 5,832,522 km (0.074 R)
• M9: 6,246,609 km (0.084 R)
• M10: 7,034,989 km (0.044 R)
• M11: 7,959,804 km (0.106 R)
• M12: 8,359,080 km (0.066 R)
• M13: 9,967,257 km (0.116 R)
• M14: 11,313,788 km (0.09 R)
• M15: 12,485,139 km (0.099 R)
• M16: 16,195,017 km (0.098 R)
• M17: 17,136,137 km (0.11 R)
• M18: 18,934,303 km (0.071 R)
• M19: 19,386,687 km (0.086 R)
• M20: 20,447,635 km (0.077 R)
• M21: 21,686,904 km (0.087 R)
• M22: 22,902,836 km (0.094 R)
• M23: 24,315,040 km (0.048 R)
• M24: 27,394,362 km (0.118 R)

Planet 7 - Gas Giant

Semi-Major Axis: 5.59 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 51.8

Radius: 8.5

Gravity: 0.72 G

Time & Orbit

Eccentricity (e): 0.091

Orbit Range: 5.08 AU - 6.1 AU

Year: 8670 Days

Day: 10.1 Hours

Environment

Temp: -229 °C

Axial Tilt: 39.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 31,569,165 km

• M1: 105,766 km (0.054 R)
• M2: 764,296 km (0.03 R)
• M3: 1,127,220 km (0.097 R)
• M4: 1,731,446 km (0.075 R)
• M5: 2,682,290 km (0.038 R)
• M6: 4,044,079 km (0.109 R)
• M7: 8,309,563 km (0.12 R)
• M8: 16,318,136 km (0.047 R)
• M9: 17,142,270 km (0.1 R)

Planet 8 - Ice Giant

Semi-Major Axis: 6.03 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 207.4

Radius: 4.8

Gravity: 9 G

Time & Orbit

Eccentricity (e): 0.063

Orbit Range: 5.65 AU - 6.41 AU

Year: 9714 Days

Day: 21.6 Hours

Environment

Temp: -213 °C

Axial Tilt: 17 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (28)

Outer Limit: 31,569,165 km

• M1: 59,839 km (0.093 R)
• M2: 231,428 km (0.083 R)
• M3: 506,239 km (0.069 R)
• M4: 885,171 km (0.095 R)
• M5: 1,276,369 km (0.105 R)
• M6: 2,635,466 km (0.102 R)
• M7: 3,248,219 km (0.109 R)
• M8: 4,363,620 km (0.072 R)
• M9: 4,645,313 km (0.058 R)
• M10: 6,831,836 km (0.112 R)
• M11: 9,494,229 km (0.034 R)
• M12: 9,967,257 km (0.087 R)
• M13: 10,321,056 km (0.105 R)
• M14: 11,006,963 km (0.078 R)
• M15: 12,519,995 km (0.069 R)
• M16: 13,728,447 km (0.069 R)
• M17: 15,772,702 km (0.077 R)
• M18: 16,619,725 km (0.053 R)
• M19: 17,117,138 km (0.095 R)
• M20: 17,369,510 km (0.108 R)
• M21: 18,011,284 km (0.095 R)
• M22: 19,892,478 km (0.116 R)
• M23: 20,382,411 km (0.08 R)
• M24: 24,515,800 km (0.071 R)
• M25: 25,160,118 km (0.08 R)
• M26: 27,503,868 km (0.033 R)
• M27: 29,534,958 km (0.067 R)
• M28: 30,540,704 km (0.077 R)

Kuiper Belt

Range: 30 - 51 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 422 - 13,217 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit