🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.28 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.55 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.2

Radius: 1.59

Gravity: 1.27 G

Time & Orbit

Eccentricity (e): 0.009

Orbit Range: 0.55 AU - 0.55 AU

Year: 268 Days

Day: 42.4 Hours

Environment

Temp: -124 °C

Axial Tilt: 9.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 90,128,423 km

• M1: 627,264 km (0.104 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.61 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.89

Radius: 1.53

Gravity: 1.23 G

Time & Orbit

Eccentricity (e): 0.055

Orbit Range: 0.58 AU - 0.64 AU

Year: 313 Days

Day: 21.3 Hours

Environment

Temp: -138 °C

Axial Tilt: 6.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Terrestrial

Semi-Major Axis: 0.63 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.8

Radius: 0.91

Gravity: 0.97 G

Time & Orbit

Eccentricity (e): 0.023

Orbit Range: 0.62 AU - 0.64 AU

Year: 328 Days

Day: 17.7 Hours

Environment

Temp: -136 °C

Axial Tilt: 1.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 4 - Gas Giant

Semi-Major Axis: 0.92 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 75.1

Radius: 10.8

Gravity: 0.64 G

Time & Orbit

Eccentricity (e): 0.232

Orbit Range: 0.71 AU - 1.13 AU

Year: 579 Days

Day: 11.4 Hours

Environment

Temp: -153 °C

Axial Tilt: 19.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (5)

Outer Limit: 90,128,423 km

• M1: 142,118 km (0.12 R)
• M2: 625,469 km (0.117 R)
• M3: 1,295,069 km (0.117 R)
• M4: 1,842,298 km (0.037 R)
• M5: 2,962,487 km (0.086 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.29 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 419.2

Radius: 8

Gravity: 6.55 G

Time & Orbit

Eccentricity (e): 0.247

Orbit Range: 0.97 AU - 1.61 AU

Year: 961 Days

Day: 12.7 Hours

Environment

Temp: -168 °C

Axial Tilt: 17 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 90,128,423 km

• M1: 100,380 km (0.086 R)
• M2: 363,224 km (0.11 R)
• M3: 779,854 km (0.063 R)
• M4: 1,334,712 km (0.094 R)
• M5: 1,613,563 km (0.116 R)
• M6: 1,895,255 km (0.096 R)
• M7: 2,199,687 km (0.079 R)
• M8: 3,848,256 km (0.106 R)
• M9: 4,182,008 km (0.098 R)
• M10: 5,969,254 km (0.061 R)
• M11: 6,459,187 km (0.089 R)
• M12: 6,757,336 km (0.095 R)
• M13: 7,289,755 km (0.07 R)
• M14: 8,042,681 km (0.059 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.36 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 678.4

Radius: 13.3

Gravity: 3.84 G

Time & Orbit

Eccentricity (e): 0.144

Orbit Range: 1.16 AU - 1.56 AU

Year: 1040 Days

Day: 5.4 Hours

Environment

Temp: -180 °C

Axial Tilt: 5.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 90,128,423 km

• M1: 166,951 km (0.12 R)
• M2: 596,297 km (0.092 R)
• M3: 1,218,175 km (0.117 R)
• M4: 2,457,893 km (0.085 R)
• M5: 3,294,444 km (0.092 R)
• M6: 4,212,676 km (0.069 R)
• M7: 5,008,238 km (0.103 R)
• M8: 5,592,716 km (0.039 R)
• M9: 6,157,299 km (0.093 R)
• M10: 7,851,345 km (0.066 R)
• M11: 9,485,552 km (0.099 R)

Planet 7 - Gas Giant

Semi-Major Axis: 1.84 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 637.5

Radius: 10.5

Gravity: 5.78 G

Time & Orbit

Eccentricity (e): 0.143

Orbit Range: 1.58 AU - 2.1 AU

Year: 1637 Days

Day: 11.3 Hours

Environment

Temp: -191 °C

Axial Tilt: 38.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 90,128,423 km

• M1: 130,898 km (0.091 R)
• M2: 705,354 km (0.094 R)
• M3: 1,218,475 km (0.111 R)
• M4: 1,608,327 km (0.11 R)
• M5: 2,951,416 km (0.099 R)
• M6: 3,342,465 km (0.036 R)
• M7: 4,869,560 km (0.066 R)
• M8: 6,102,247 km (0.099 R)
• M9: 7,725,384 km (0.092 R)
• M10: 8,742,500 km (0.091 R)
• M11: 10,760,126 km (0.109 R)
• M12: 11,803,272 km (0.118 R)

Planet 8 - Ice Giant

Semi-Major Axis: 9.36 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 580.6

Radius: 5.2

Gravity: 21.47 G

Time & Orbit

Eccentricity (e): 0.126

Orbit Range: 8.18 AU - 10.54 AU

Year: 18786 Days

Day: 24.8 Hours

Environment

Temp: -238 °C

Axial Tilt: 35.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (29)

Outer Limit: 90,128,423 km

• M1: 64,776 km (0.103 R)
• M2: 391,797 km (0.118 R)
• M3: 584,180 km (0.098 R)
• M4: 861,085 km (0.103 R)
• M5: 2,100,354 km (0.108 R)
• M6: 3,022,924 km (0.05 R)
• M7: 5,031,874 km (0.116 R)
• M8: 7,459,399 km (0.079 R)
• M9: 8,535,157 km (0.048 R)
• M10: 9,878,695 km (0.096 R)
• M11: 17,317,450 km (0.083 R)
• M12: 17,482,306 km (0.036 R)
• M13: 20,539,189 km (0.111 R)
• M14: 20,909,893 km (0.118 R)
• M15: 23,028,199 km (0.08 R)
• M16: 24,139,112 km (0.109 R)
• M17: 27,127,330 km (0.111 R)
• M18: 30,713,340 km (0.101 R)
• M19: 34,733,484 km (0.111 R)
• M20: 35,127,375 km (0.072 R)
• M21: 35,924,283 km (0.09 R)
• M22: 37,830,310 km (0.102 R)
• M23: 42,888,363 km (0.114 R)
• M24: 44,258,231 km (0.102 R)
• M25: 47,891,066 km (0.109 R)
• M26: 50,532,216 km (0.118 R)
• M27: 52,921,444 km (0.077 R)
• M28: 54,673,534 km (0.099 R)
• M29: 64,410,560 km (0.094 R)

Planet 9 - Ice Giant

Semi-Major Axis: 10.37 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 948.9

Radius: 6

Gravity: 26.36 G

Time & Orbit

Eccentricity (e): 0.103

Orbit Range: 9.3 AU - 11.44 AU

Year: 21907 Days

Day: 22.1 Hours

Environment

Temp: -238 °C

Axial Tilt: 26.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (37)

Outer Limit: 90,128,423 km

• M1: 74,649 km (0.055 R)
• M2: 1,142,030 km (0.042 R)
• M3: 1,585,438 km (0.035 R)
• M4: 1,847,085 km (0.086 R)
• M5: 2,339,860 km (0.038 R)
• M6: 2,757,388 km (0.047 R)
• M7: 3,252,407 km (0.08 R)
• M8: 6,012,638 km (0.072 R)
• M9: 7,284,668 km (0.095 R)
• M10: 7,589,848 km (0.12 R)
• M11: 8,010,218 km (0.115 R)
• M12: 9,424,217 km (0.119 R)
• M13: 10,540,217 km (0.092 R)
• M14: 13,787,389 km (0.072 R)
• M15: 16,664,305 km (0.043 R)
• M16: 17,919,282 km (0.109 R)
• M17: 18,853,371 km (0.066 R)
• M18: 22,485,308 km (0.119 R)
• M19: 27,402,740 km (0.069 R)
• M20: 29,658,077 km (0.077 R)
• M21: 30,045,685 km (0.067 R)
• M22: 36,566,507 km (0.103 R)
• M23: 37,012,159 km (0.104 R)
• M24: 39,450,305 km (0.1 R)
• M25: 41,831,155 km (0.11 R)
• M26: 43,304,844 km (0.09 R)
• M27: 45,323,068 km (0.113 R)
• M28: 46,702,810 km (0.064 R)
• M29: 49,184,489 km (0.057 R)
• M30: 58,967,292 km (0.096 R)
• M31: 63,559,797 km (0.114 R)
• M32: 63,988,694 km (0.095 R)
• M33: 67,713,083 km (0.08 R)
• M34: 70,886,652 km (0.1 R)
• M35: 74,871,939 km (0.085 R)
• M36: 75,110,847 km (0.111 R)
• M37: 87,718,806 km (0.073 R)

Kuiper Belt

Range: 30 - 58 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 276 - 17,616 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit