🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.29 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.58 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.77

Radius: 0.9

Gravity: 0.95 G

Time & Orbit

Eccentricity (e): 0.013

Orbit Range: 0.57 AU - 0.59 AU

Year: 166 Days

Day: 12.1 Hours

Environment

Temp: 218 °C

Axial Tilt: 117 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 0.6 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.38

Radius: 1.81

Gravity: 1.34 G

Time & Orbit

Eccentricity (e): 0.248

Orbit Range: 0.45 AU - 0.75 AU

Year: 174 Days

Day: 38.5 Hours

Environment

Temp: 219 °C

Axial Tilt: 25.7 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 3 - Terrestrial

Semi-Major Axis: 0.73 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.68

Radius: 1.68

Gravity: 1.3 G

Time & Orbit

Eccentricity (e): 0.239

Orbit Range: 0.56 AU - 0.9 AU

Year: 234 Days

Day: 46.2 Hours

Environment

Temp: 130 °C

Axial Tilt: 28.1 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 4 - Terrestrial

Semi-Major Axis: 1.23 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.49

Radius: 1.17

Gravity: 1.09 G

Time & Orbit

Eccentricity (e): 0.03

Orbit Range: 1.19 AU - 1.27 AU

Year: 511 Days

Day: 41.7 Hours

Environment

Temp: -6 °C

Axial Tilt: 10.4 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Satellites (1)

Outer Limit: 37,010,099 km

• M1: 649,255 km (0.067 R)

Planet 5 - Terrestrial

Semi-Major Axis: 1.3 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.93

Radius: 0.97

Gravity: 0.99 G

Time & Orbit

Eccentricity (e): 0.188

Orbit Range: 1.06 AU - 1.54 AU

Year: 555 Days

Day: 35.4 Hours

Environment

Temp: -23 °C

Axial Tilt: 20.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 6 - Terrestrial

Semi-Major Axis: 1.5 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.29

Radius: 1.79

Gravity: 1.34 G

Time & Orbit

Eccentricity (e): 0.247

Orbit Range: 1.13 AU - 1.87 AU

Year: 688 Days

Day: 19.5 Hours

Environment

Temp: -50 °C

Axial Tilt: 38.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Asteroid Belt

Center: 3.48 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 7 - Gas Giant

Semi-Major Axis: 5.45 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 223.3

Radius: 12.7

Gravity: 1.38 G

Time & Orbit

Eccentricity (e): 0.211

Orbit Range: 4.3 AU - 6.6 AU

Year: 4768 Days

Day: 12.7 Hours

Environment

Temp: -155 °C

Axial Tilt: 2.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 37,010,099 km

• M1: 171,140 km (0.09 R)
• M2: 591,809 km (0.11 R)
• M3: 1,280,259 km (0.08 R)
• M4: 2,115,015 km (0.119 R)
• M5: 3,081,567 km (0.096 R)
• M6: 3,609,797 km (0.083 R)
• M7: 5,745,605 km (0.034 R)
• M8: 6,273,985 km (0.066 R)
• M9: 11,292,994 km (0.104 R)
• M10: 14,004,006 km (0.098 R)
• M11: 14,817,220 km (0.031 R)

Planet 8 - Gas Giant

Semi-Major Axis: 5.57 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 271.4

Radius: 8.6

Gravity: 3.67 G

Time & Orbit

Eccentricity (e): 0.19

Orbit Range: 4.51 AU - 6.63 AU

Year: 4926 Days

Day: 7.3 Hours

Environment

Temp: -146 °C

Axial Tilt: 8.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 37,010,099 km

• M1: 106,962 km (0.103 R)
• M2: 405,261 km (0.053 R)
• M3: 758,012 km (0.077 R)
• M4: 1,027,887 km (0.057 R)
• M5: 1,383,332 km (0.05 R)
• M6: 1,844,392 km (0.116 R)
• M7: 2,178,893 km (0.114 R)
• M8: 2,523,566 km (0.068 R)
• M9: 3,074,386 km (0.107 R)
• M10: 3,782,433 km (0.044 R)
• M11: 4,803,438 km (0.119 R)
• M12: 5,467,653 km (0.1 R)
• M13: 6,025,353 km (0.084 R)
• M14: 6,887,486 km (0.084 R)
• M15: 7,895,028 km (0.057 R)
• M16: 9,179,026 km (0.105 R)
• M17: 9,890,065 km (0.067 R)
• M18: 11,806,264 km (0.111 R)
• M19: 14,201,027 km (0.044 R)
• M20: 15,931,126 km (0.097 R)
• M21: 17,740,662 km (0.083 R)
• M22: 18,083,690 km (0.045 R)
• M23: 18,606,684 km (0.065 R)

Planet 9 - Gas Giant

Semi-Major Axis: 10.46 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 196.2

Radius: 12.2

Gravity: 1.32 G

Time & Orbit

Eccentricity (e): 0.188

Orbit Range: 8.49 AU - 12.43 AU

Year: 12677 Days

Day: 13.7 Hours

Environment

Temp: -190 °C

Axial Tilt: 13.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (26)

Outer Limit: 37,010,099 km

• M1: 151,842 km (0.082 R)
• M2: 727,644 km (0.09 R)
• M3: 1,249,741 km (0.102 R)
• M4: 2,064,451 km (0.075 R)
• M5: 2,863,004 km (0.106 R)
• M6: 3,443,743 km (0.087 R)
• M7: 3,954,021 km (0.091 R)
• M8: 4,926,856 km (0.095 R)
• M9: 6,521,121 km (0.109 R)
• M10: 7,343,161 km (0.066 R)
• M11: 7,837,732 km (0.105 R)
• M12: 9,150,303 km (0.099 R)
• M13: 9,678,683 km (0.102 R)
• M14: 10,990,956 km (0.045 R)
• M15: 13,966,457 km (0.048 R)
• M16: 14,786,852 km (0.096 R)
• M17: 15,453,909 km (0.112 R)
• M18: 16,331,600 km (0.071 R)
• M19: 17,176,229 km (0.104 R)
• M20: 17,777,762 km (0.089 R)
• M21: 18,186,613 km (0.058 R)
• M22: 20,848,258 km (0.058 R)
• M23: 21,303,186 km (0.064 R)
• M24: 27,381,347 km (0.061 R)
• M25: 28,946,590 km (0.096 R)
• M26: 35,915,307 km (0.08 R)

Kuiper Belt

Range: 30 - 49 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 414 - 13,715 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit