🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.26 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.51 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.09

Radius: 1.76

Gravity: 1.32 G

Time & Orbit

Eccentricity (e): 0.089

Orbit Range: 0.46 AU - 0.56 AU

Year: 239 Days

Day: 33.3 Hours

Environment

Temp: -126 °C

Axial Tilt: 34.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 49,238,025 km

• M1: 393,293 km (0.053 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.68 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 880.1

Radius: 12.4

Gravity: 5.72 G

Time & Orbit

Eccentricity (e): 0.213

Orbit Range: 0.54 AU - 0.82 AU

Year: 368 Days

Day: 5.7 Hours

Environment

Temp: -143 °C

Axial Tilt: 178.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 49,238,025 km

• M1: 154,834 km (0.076 R)
• M2: 569,818 km (0.089 R)
• M3: 994,078 km (0.073 R)
• M4: 1,570,179 km (0.071 R)
• M5: 2,381,449 km (0.116 R)
• M6: 2,940,945 km (0.088 R)
• M7: 3,373,133 km (0.099 R)
• M8: 3,899,268 km (0.109 R)
• M9: 4,367,360 km (0.064 R)
• M10: 4,798,501 km (0.077 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.16 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 140.2

Radius: 10.1

Gravity: 1.37 G

Time & Orbit

Eccentricity (e): 0.107

Orbit Range: 1.04 AU - 1.28 AU

Year: 820 Days

Day: 13.5 Hours

Environment

Temp: -166 °C

Axial Tilt: 41.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 49,238,025 km

• M1: 125,662 km (0.073 R)
• M2: 476,469 km (0.106 R)
• M3: 1,402,330 km (0.117 R)
• M4: 1,964,818 km (0.079 R)
• M5: 2,312,334 km (0.045 R)
• M6: 2,770,253 km (0.092 R)
• M7: 3,221,291 km (0.08 R)
• M8: 3,635,976 km (0.092 R)
• M9: 4,338,787 km (0.071 R)
• M10: 4,934,336 km (0.094 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.04 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 295.1

Radius: 12.5

Gravity: 1.89 G

Time & Orbit

Eccentricity (e): 0.02

Orbit Range: 2 AU - 2.08 AU

Year: 1911 Days

Day: 10.1 Hours

Environment

Temp: -185 °C

Axial Tilt: 45.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 49,238,025 km

• M1: 155,432 km (0.051 R)
• M2: 589,416 km (0.109 R)
• M3: 996,771 km (0.111 R)
• M4: 1,474,885 km (0.097 R)
• M5: 2,117,408 km (0.103 R)
• M6: 2,729,413 km (0.105 R)
• M7: 3,456,908 km (0.109 R)
• M8: 4,205,047 km (0.066 R)
• M9: 4,655,187 km (0.063 R)
• M10: 5,238,020 km (0.047 R)
• M11: 6,959,592 km (0.086 R)
• M12: 7,437,109 km (0.083 R)
• M13: 7,909,539 km (0.116 R)
• M14: 8,627,459 km (0.09 R)
• M15: 9,090,464 km (0.06 R)
• M16: 10,035,025 km (0.078 R)
• M17: 10,547,697 km (0.062 R)
• M18: 11,800,280 km (0.099 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.4 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 559.9

Radius: 10.8

Gravity: 4.8 G

Time & Orbit

Eccentricity (e): 0.2

Orbit Range: 1.92 AU - 2.88 AU

Year: 2439 Days

Day: 6.4 Hours

Environment

Temp: -194 °C

Axial Tilt: 24.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 49,238,025 km

• M1: 134,488 km (0.087 R)
• M2: 503,247 km (0.086 R)
• M3: 1,064,538 km (0.05 R)
• M4: 1,411,456 km (0.101 R)
• M5: 1,813,126 km (0.075 R)
• M6: 2,252,794 km (0.066 R)
• M7: 2,646,536 km (0.109 R)
• M8: 3,298,932 km (0.107 R)
• M9: 3,978,855 km (0.114 R)
• M10: 4,664,162 km (0.109 R)
• M11: 5,262,853 km (0.062 R)
• M12: 6,321,856 km (0.075 R)
• M13: 6,943,735 km (0.055 R)
• M14: 8,184,350 km (0.045 R)
• M15: 8,824,629 km (0.077 R)
• M16: 11,370,635 km (0.102 R)
• M17: 11,725,032 km (0.058 R)
• M18: 14,370,820 km (0.103 R)

Planet 6 - Gas Giant

Semi-Major Axis: 4.21 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 546.6

Radius: 13.4

Gravity: 3.04 G

Time & Orbit

Eccentricity (e): 0.026

Orbit Range: 4.1 AU - 4.32 AU

Year: 5667 Days

Day: 12.3 Hours

Environment

Temp: -216 °C

Axial Tilt: 12.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 49,238,025 km

• M1: 166,951 km (0.071 R)
• M2: 1,086,230 km (0.086 R)
• M3: 1,544,299 km (0.083 R)
• M4: 2,090,032 km (0.033 R)
• M5: 2,907,435 km (0.116 R)
• M6: 3,861,271 km (0.088 R)
• M7: 4,648,903 km (0.119 R)
• M8: 5,176,834 km (0.082 R)
• M9: 5,685,916 km (0.08 R)
• M10: 6,904,989 km (0.1 R)
• M11: 7,773,704 km (0.115 R)
• M12: 8,597,539 km (0.108 R)
• M13: 10,776,283 km (0.074 R)
• M14: 11,420,900 km (0.099 R)
• M15: 14,480,027 km (0.113 R)
• M16: 16,138,917 km (0.087 R)
• M17: 16,739,254 km (0.071 R)
• M18: 18,305,693 km (0.12 R)
• M19: 21,440,068 km (0.103 R)
• M20: 23,514,093 km (0.09 R)
• M21: 25,637,784 km (0.115 R)
• M22: 26,787,892 km (0.113 R)

Planet 7 - Gas Giant

Semi-Major Axis: 5.39 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 545.5

Radius: 10.3

Gravity: 5.14 G

Time & Orbit

Eccentricity (e): 0.191

Orbit Range: 4.36 AU - 6.42 AU

Year: 8209 Days

Day: 14.5 Hours

Environment

Temp: -212 °C

Axial Tilt: 0.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 49,238,025 km

• M1: 128,505 km (0.081 R)
• M2: 498,011 km (0.12 R)
• M3: 1,075,010 km (0.05 R)
• M4: 2,078,812 km (0.093 R)
• M5: 2,612,876 km (0.072 R)
• M6: 4,262,642 km (0.095 R)
• M7: 7,205,082 km (0.066 R)
• M8: 8,264,983 km (0.095 R)
• M9: 8,897,184 km (0.106 R)
• M10: 9,697,832 km (0.073 R)
• M11: 10,594,521 km (0.089 R)
• M12: 12,497,855 km (0.109 R)
• M13: 14,082,396 km (0.078 R)
• M14: 16,836,642 km (0.094 R)
• M15: 22,087,228 km (0.093 R)
• M16: 23,139,200 km (0.098 R)
• M17: 27,313,579 km (0.079 R)
• M18: 37,457,512 km (0.058 R)
• M19: 38,835,607 km (0.11 R)

Planet 8 - Ice Giant

Semi-Major Axis: 6.24 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 710.1

Radius: 4

Gravity: 44.38 G

Time & Orbit

Eccentricity (e): 0.101

Orbit Range: 5.61 AU - 6.87 AU

Year: 10226 Days

Day: 18.5 Hours

Environment

Temp: -224 °C

Axial Tilt: 13.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 49,238,025 km

• M1: 64,477 km (0.064 R)
• M2: 341,382 km (0.046 R)
• M3: 552,315 km (0.12 R)
• M4: 2,541,219 km (0.081 R)
• M5: 4,297,199 km (0.055 R)
• M6: 4,931,793 km (0.106 R)
• M7: 6,384,538 km (0.107 R)
• M8: 9,646,968 km (0.111 R)
• M9: 10,621,449 km (0.077 R)
• M10: 11,159,702 km (0.104 R)
• M11: 12,944,105 km (0.095 R)
• M12: 13,126,316 km (0.095 R)
• M13: 13,683,119 km (0.067 R)
• M14: 14,711,604 km (0.117 R)
• M15: 15,790,654 km (0.108 R)
• M16: 23,482,079 km (0.118 R)
• M17: 24,117,720 km (0.113 R)
• M18: 28,789,362 km (0.1 R)
• M19: 33,799,245 km (0.054 R)
• M20: 34,842,990 km (0.049 R)
• M21: 41,428,587 km (0.116 R)
• M22: 44,527,357 km (0.057 R)
• M23: 46,771,774 km (0.118 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: 399 - 16,127 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit