🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.27 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.53 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.77

Radius: 0.9

Gravity: 0.95 G

Time & Orbit

Eccentricity (e): 0.059

Orbit Range: 0.5 AU - 0.56 AU

Year: 249 Days

Day: 29.7 Hours

Environment

Temp: -116 °C

Axial Tilt: 39 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.55 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.59

Radius: 1.46

Gravity: 1.22 G

Time & Orbit

Eccentricity (e): 0.162

Orbit Range: 0.46 AU - 0.64 AU

Year: 263 Days

Day: 25.1 Hours

Environment

Temp: -118 °C

Axial Tilt: 10.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 81,202,528 km

• M1: 177,124 km (0.108 R)
• M2: 325,824 km (0.112 R)

Planet 3 - Terrestrial

Semi-Major Axis: 0.55 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.56

Radius: 1.46

Gravity: 1.2 G

Time & Orbit

Eccentricity (e): 0.249

Orbit Range: 0.41 AU - 0.69 AU

Year: 263 Days

Day: 28.5 Hours

Environment

Temp: -113 °C

Axial Tilt: 48.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 4 - Terrestrial

Semi-Major Axis: 0.61 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.7

Radius: 1.49

Gravity: 1.22 G

Time & Orbit

Eccentricity (e): 0.095

Orbit Range: 0.55 AU - 0.67 AU

Year: 308 Days

Day: 16.5 Hours

Environment

Temp: -125 °C

Axial Tilt: 16.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 81,202,528 km

• M1: 128,804 km (0.041 R)

Planet 5 - Terrestrial

Semi-Major Axis: 0.62 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.44

Radius: 0.72

Gravity: 0.85 G

Time & Orbit

Eccentricity (e): 0.091

Orbit Range: 0.56 AU - 0.68 AU

Year: 315 Days

Day: 25.5 Hours

Environment

Temp: -122 °C

Axial Tilt: 10.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 6 - Gas Giant

Semi-Major Axis: 0.93 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 863.5

Radius: 9.8

Gravity: 8.99 G

Time & Orbit

Eccentricity (e): 0.215

Orbit Range: 0.73 AU - 1.13 AU

Year: 579 Days

Day: 6.7 Hours

Environment

Temp: -155 °C

Axial Tilt: 35.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 81,202,528 km

• M1: 121,922 km (0.095 R)
• M2: 435,180 km (0.11 R)
• M3: 1,121,984 km (0.088 R)
• M4: 1,572,124 km (0.12 R)
• M5: 1,931,159 km (0.106 R)
• M6: 2,649,677 km (0.086 R)
• M7: 3,126,147 km (0.118 R)
• M8: 4,012,963 km (0.092 R)
• M9: 5,093,359 km (0.083 R)
• M10: 5,682,924 km (0.106 R)
• M11: 7,568,605 km (0.071 R)

Planet 7 - Gas Giant

Semi-Major Axis: 2.25 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 629.3

Radius: 13

Gravity: 3.72 G

Time & Orbit

Eccentricity (e): 0.189

Orbit Range: 1.82 AU - 2.68 AU

Year: 2179 Days

Day: 9.7 Hours

Environment

Temp: -203 °C

Axial Tilt: 36.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 81,202,528 km

• M1: 163,510 km (0.116 R)
• M2: 650,003 km (0.104 R)
• M3: 1,176,138 km (0.113 R)
• M4: 1,874,761 km (0.068 R)
• M5: 2,352,576 km (0.083 R)
• M6: 3,936,369 km (0.049 R)
• M7: 5,054,314 km (0.047 R)
• M8: 6,143,087 km (0.06 R)
• M9: 6,879,108 km (0.073 R)
• M10: 7,673,024 km (0.085 R)
• M11: 8,276,951 km (0.119 R)
• M12: 9,043,191 km (0.056 R)
• M13: 10,352,771 km (0.106 R)
• M14: 11,943,296 km (0.08 R)
• M15: 12,508,028 km (0.08 R)
• M16: 13,647,664 km (0.094 R)
• M17: 15,939,204 km (0.093 R)

Planet 8 - Gas Giant

Semi-Major Axis: 4.22 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 65.9

Radius: 14.2

Gravity: 0.33 G

Time & Orbit

Eccentricity (e): 0.071

Orbit Range: 3.92 AU - 4.52 AU

Year: 5597 Days

Day: 7.1 Hours

Environment

Temp: -207 °C

Axial Tilt: 21.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 81,202,528 km

• M1: 176,675 km (0.065 R)
• M2: 1,024,297 km (0.073 R)
• M3: 2,536,581 km (0.114 R)
• M4: 4,022,687 km (0.102 R)
• M5: 6,077,563 km (0.111 R)
• M6: 11,321,417 km (0.101 R)
• M7: 13,546,985 km (0.099 R)
• M8: 14,092,867 km (0.098 R)

Planet 9 - Ice Giant

Semi-Major Axis: 7.9 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 758.2

Radius: 4.4

Gravity: 39.16 G

Time & Orbit

Eccentricity (e): 0.002

Orbit Range: 7.88 AU - 7.92 AU

Year: 14337 Days

Day: 21 Hours

Environment

Temp: -226 °C

Axial Tilt: 25 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (37)

Outer Limit: 81,202,528 km

• M1: 56,249 km (0.028 R)
• M2: 202,855 km (0.049 R)
• M3: 348,114 km (0.027 R)
• M4: 558,598 km (0.114 R)
• M5: 716,275 km (0.068 R)
• M6: 893,249 km (0.049 R)
• M7: 1,294,470 km (0.07 R)
• M8: 1,895,106 km (0.099 R)
• M9: 3,297,287 km (0.108 R)
• M10: 4,688,098 km (0.051 R)
• M11: 4,855,947 km (0.094 R)
• M12: 5,948,909 km (0.067 R)
• M13: 6,805,207 km (0.05 R)
• M14: 8,070,805 km (0.063 R)
• M15: 10,083,644 km (0.102 R)
• M16: 12,029,314 km (0.104 R)
• M17: 13,660,081 km (0.067 R)
• M18: 14,492,892 km (0.048 R)
• M19: 15,432,666 km (0.11 R)
• M20: 16,335,489 km (0.03 R)
• M21: 17,114,445 km (0.099 R)
• M22: 17,273,019 km (0.051 R)
• M23: 18,081,296 km (0.106 R)
• M24: 19,860,165 km (0.091 R)
• M25: 23,467,119 km (0.116 R)
• M26: 26,521,608 km (0.054 R)
• M27: 27,704,927 km (0.095 R)
• M28: 30,992,490 km (0.096 R)
• M29: 31,823,207 km (0.086 R)
• M30: 41,963,100 km (0.084 R)
• M31: 42,979,319 km (0.118 R)
• M32: 43,125,775 km (0.097 R)
• M33: 44,309,842 km (0.101 R)
• M34: 48,624,544 km (0.053 R)
• M35: 53,042,319 km (0.067 R)
• M36: 56,482,022 km (0.095 R)
• M37: 58,077,185 km (0.063 R)

Planet 10 - Ice Giant

Semi-Major Axis: 9.4 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 961.8

Radius: 4.1

Gravity: 57.22 G

Time & Orbit

Eccentricity (e): 0.249

Orbit Range: 7.06 AU - 11.74 AU

Year: 18608 Days

Day: 19.6 Hours

Environment

Temp: -220 °C

Axial Tilt: 45.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (36)

Outer Limit: 81,202,528 km

• M1: 51,462 km (0.09 R)
• M2: 184,305 km (0.056 R)
• M3: 335,997 km (0.102 R)
• M4: 548,276 km (0.06 R)
• M5: 2,155,556 km (0.073 R)
• M6: 3,184,639 km (0.101 R)
• M7: 3,620,568 km (0.094 R)
• M8: 3,805,770 km (0.103 R)
• M9: 4,330,410 km (0.045 R)
• M10: 5,441,922 km (0.052 R)
• M11: 7,106,198 km (0.077 R)
• M12: 7,396,717 km (0.062 R)
• M13: 7,898,618 km (0.084 R)
• M14: 8,263,038 km (0.088 R)
• M15: 8,969,739 km (0.073 R)
• M16: 9,481,962 km (0.109 R)
• M17: 15,158,902 km (0.118 R)
• M18: 15,640,158 km (0.096 R)
• M19: 18,290,284 km (0.12 R)
• M20: 19,112,325 km (0.111 R)
• M21: 19,863,306 km (0.071 R)
• M22: 20,246,277 km (0.113 R)
• M23: 23,701,389 km (0.075 R)
• M24: 24,458,354 km (0.026 R)
• M25: 27,059,263 km (0.07 R)
• M26: 28,005,469 km (0.067 R)
• M27: 31,232,744 km (0.113 R)
• M28: 44,631,777 km (0.073 R)
• M29: 46,957,425 km (0.074 R)
• M30: 48,149,870 km (0.065 R)
• M31: 48,321,758 km (0.055 R)
• M32: 63,448,945 km (0.114 R)
• M33: 68,101,588 km (0.065 R)
• M34: 73,886,987 km (0.065 R)
• M35: 76,196,628 km (0.062 R)
• M36: 77,133,709 km (0.112 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: 247 - 14,956 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit