🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.32 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.64 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.19

Radius: 1.37

Gravity: 1.17 G

Time & Orbit

Eccentricity (e): 0.229

Orbit Range: 0.49 AU - 0.79 AU

Year: 220 Days

Day: 12.7 Hours

Environment

Temp: 3 °C

Axial Tilt: 47.4 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Planet 2 - Terrestrial

Semi-Major Axis: 0.97 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.6

Radius: 1.84

Gravity: 1.36 G

Time & Orbit

Eccentricity (e): 0.164

Orbit Range: 0.81 AU - 1.13 AU

Year: 411 Days

Day: 32 Hours

Environment

Temp: -44 °C

Axial Tilt: 11.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Terrestrial

Semi-Major Axis: 1.35 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.04

Radius: 1.75

Gravity: 1.32 G

Time & Orbit

Eccentricity (e): 0.094

Orbit Range: 1.22 AU - 1.48 AU

Year: 675 Days

Day: 14 Hours

Environment

Temp: -90 °C

Axial Tilt: 4.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 4 - Terrestrial

Semi-Major Axis: 2.22 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.48

Radius: 1.82

Gravity: 1.35 G

Time & Orbit

Eccentricity (e): 0.247

Orbit Range: 1.67 AU - 2.77 AU

Year: 1424 Days

Day: 31.2 Hours

Environment

Temp: -122 °C

Axial Tilt: 17.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 5 - Terrestrial

Semi-Major Axis: 2.25 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.59

Radius: 1.46

Gravity: 1.22 G

Time & Orbit

Eccentricity (e): 0.23

Orbit Range: 1.73 AU - 2.77 AU

Year: 1453 Days

Day: 42.5 Hours

Environment

Temp: -120 °C

Axial Tilt: 1.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 6 - Gas Giant

Semi-Major Axis: 3.44 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 498.4

Radius: 14.1

Gravity: 2.51 G

Time & Orbit

Eccentricity (e): 0.069

Orbit Range: 3.2 AU - 3.68 AU

Year: 2746 Days

Day: 14 Hours

Environment

Temp: -140 °C

Axial Tilt: 44.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 57,809,670 km

• M1: 176,077 km (0.068 R)
• M2: 718,070 km (0.114 R)
• M3: 1,295,667 km (0.104 R)
• M4: 2,096,614 km (0.109 R)
• M5: 2,596,570 km (0.072 R)
• M6: 3,411,879 km (0.105 R)
• M7: 4,130,696 km (0.079 R)
• M8: 6,797,129 km (0.119 R)
• M9: 7,816,489 km (0.089 R)
• M10: 8,507,781 km (0.089 R)
• M11: 9,171,546 km (0.099 R)
• M12: 9,727,003 km (0.109 R)
• M13: 11,215,053 km (0.065 R)
• M14: 11,810,602 km (0.118 R)
• M15: 13,502,554 km (0.072 R)
• M16: 14,639,199 km (0.048 R)
• M17: 15,740,239 km (0.092 R)
• M18: 16,487,630 km (0.06 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.98 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 47.4

Radius: 8.9

Gravity: 0.6 G

Time & Orbit

Eccentricity (e): 0.139

Orbit Range: 3.43 AU - 4.53 AU

Year: 3418 Days

Day: 8.5 Hours

Environment

Temp: -168 °C

Axial Tilt: 5.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 57,809,670 km

• M1: 114,891 km (0.1 R)
• M2: 458,667 km (0.09 R)
• M3: 954,285 km (0.103 R)
• M4: 1,409,511 km (0.104 R)
• M5: 2,033,933 km (0.044 R)
• M6: 2,758,435 km (0.038 R)
• M7: 5,746,653 km (0.089 R)
• M8: 6,033,282 km (0.12 R)
• M9: 6,459,187 km (0.07 R)
• M10: 7,759,342 km (0.086 R)
• M11: 9,142,973 km (0.108 R)

Planet 8 - Gas Giant

Semi-Major Axis: 4.9 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 453.9

Radius: 8.1

Gravity: 6.92 G

Time & Orbit

Eccentricity (e): 0.174

Orbit Range: 4.05 AU - 5.75 AU

Year: 4669 Days

Day: 8.3 Hours

Environment

Temp: -174 °C

Axial Tilt: 133.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 57,809,670 km

• M1: 249,230 km (0.079 R)
• M2: 638,933 km (0.082 R)
• M3: 1,230,891 km (0.071 R)
• M4: 1,530,237 km (0.046 R)
• M5: 1,839,755 km (0.077 R)
• M6: 2,308,146 km (0.03 R)
• M7: 4,045,126 km (0.03 R)
• M8: 4,547,027 km (0.079 R)
• M9: 6,394,112 km (0.095 R)
• M10: 7,634,578 km (0.073 R)
• M11: 10,967,020 km (0.108 R)
• M12: 17,346,172 km (0.082 R)
• M13: 20,906,153 km (0.06 R)
• M14: 22,962,376 km (0.064 R)

Planet 9 - Gas Giant

Semi-Major Axis: 8.88 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 926.2

Radius: 13.7

Gravity: 4.93 G

Time & Orbit

Eccentricity (e): 0.248

Orbit Range: 6.68 AU - 11.08 AU

Year: 11391 Days

Day: 10.6 Hours

Environment

Temp: -186 °C

Axial Tilt: 38 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (29)

Outer Limit: 57,809,670 km

• M1: 170,392 km (0.102 R)
• M2: 1,218,923 km (0.114 R)
• M3: 2,376,362 km (0.057 R)
• M4: 3,749,671 km (0.114 R)
• M5: 4,689,444 km (0.102 R)
• M6: 5,353,061 km (0.117 R)
• M7: 6,078,610 km (0.093 R)
• M8: 8,510,922 km (0.12 R)
• M9: 10,621,598 km (0.07 R)
• M10: 14,174,997 km (0.07 R)
• M11: 15,280,226 km (0.118 R)
• M12: 16,516,503 km (0.117 R)
• M13: 17,897,141 km (0.029 R)
• M14: 18,859,504 km (0.116 R)
• M15: 20,626,255 km (0.118 R)
• M16: 21,954,236 km (0.094 R)
• M17: 23,812,391 km (0.057 R)
• M18: 24,682,003 km (0.106 R)
• M19: 25,773,469 km (0.083 R)
• M20: 28,159,256 km (0.062 R)
• M21: 35,443,326 km (0.109 R)
• M22: 36,196,402 km (0.077 R)
• M23: 39,718,384 km (0.12 R)
• M24: 41,354,686 km (0.062 R)
• M25: 42,049,568 km (0.062 R)
• M26: 43,319,953 km (0.037 R)
• M27: 50,215,667 km (0.119 R)
• M28: 52,128,126 km (0.116 R)
• M29: 56,607,685 km (0.095 R)

Kuiper Belt

Range: 30 - 52 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 545 - 18,177 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit