🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.42 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.84 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.36

Radius: 1.41

Gravity: 1.19 G

Time & Orbit

Eccentricity (e): 0.192

Orbit Range: 0.68 AU - 1 AU

Year: 287 Days

Day: 28.8 Hours

Environment

Temp: 90 °C

Axial Tilt: 27.4 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Satellites (1)

Outer Limit: 87,989,116 km

• M1: 516,262 km (0.101 R)

Planet 2 - Terrestrial

Semi-Major Axis: 1.04 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.9

Radius: 1.29

Gravity: 1.14 G

Time & Orbit

Eccentricity (e): 0.093

Orbit Range: 0.94 AU - 1.14 AU

Year: 395 Days

Day: 20.9 Hours

Environment

Temp: 27 °C

Axial Tilt: 47.9 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Satellites (1)

Outer Limit: 87,989,116 km

• M1: 772,673 km (0.108 R)

Planet 3 - Terrestrial

Semi-Major Axis: 2.98 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.93

Radius: 0.97

Gravity: 0.99 G

Time & Orbit

Eccentricity (e): 0.117

Orbit Range: 2.63 AU - 3.33 AU

Year: 1918 Days

Day: 35.1 Hours

Environment

Temp: -117 °C

Axial Tilt: 21.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 87,989,116 km

• M1: 25,132 km (0.035 R)

Asteroid Belt

Center: 3.81 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 4 - Gas Giant

Semi-Major Axis: 4.64 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 168.8

Radius: 13.9

Gravity: 0.87 G

Time & Orbit

Eccentricity (e): 0.084

Orbit Range: 4.25 AU - 5.03 AU

Year: 3726 Days

Day: 7 Hours

Environment

Temp: -130 °C

Axial Tilt: 36.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 87,989,116 km

• M1: 173,982 km (0.118 R)
• M2: 622,477 km (0.096 R)
• M3: 1,085,632 km (0.092 R)
• M4: 1,885,232 km (0.115 R)
• M5: 2,875,121 km (0.069 R)
• M6: 3,857,830 km (0.102 R)
• M7: 4,616,740 km (0.106 R)
• M8: 6,664,436 km (0.111 R)
• M9: 7,962,945 km (0.03 R)
• M10: 8,719,162 km (0.079 R)
• M11: 9,358,244 km (0.092 R)
• M12: 10,062,850 km (0.093 R)
• M13: 11,278,483 km (0.103 R)
• M14: 12,871,999 km (0.104 R)
• M15: 13,449,148 km (0.068 R)
• M16: 14,566,793 km (0.092 R)

Planet 5 - Gas Giant

Semi-Major Axis: 5.16 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 220.4

Radius: 11.4

Gravity: 1.7 G

Time & Orbit

Eccentricity (e): 0.123

Orbit Range: 4.53 AU - 5.79 AU

Year: 4369 Days

Day: 10.5 Hours

Environment

Temp: -143 °C

Axial Tilt: 17.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 87,989,116 km

• M1: 142,118 km (0.076 R)
• M2: 643,570 km (0.119 R)
• M3: 1,077,254 km (0.057 R)
• M4: 1,552,527 km (0.118 R)
• M5: 2,017,028 km (0.111 R)
• M6: 2,377,409 km (0.063 R)
• M7: 3,880,569 km (0.086 R)
• M8: 5,225,753 km (0.119 R)
• M9: 5,686,963 km (0.038 R)
• M10: 6,497,933 km (0.074 R)
• M11: 6,974,402 km (0.088 R)
• M12: 7,810,206 km (0.113 R)
• M13: 8,644,812 km (0.088 R)
• M14: 9,970,548 km (0.067 R)
• M15: 10,529,596 km (0.086 R)
• M16: 11,109,287 km (0.105 R)
• M17: 15,191,813 km (0.1 R)
• M18: 17,273,767 km (0.05 R)
• M19: 17,647,313 km (0.113 R)

Planet 6 - Gas Giant

Semi-Major Axis: 9.38 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 17.3

Radius: 13.5

Gravity: 0.09 G

Time & Orbit

Eccentricity (e): 0.174

Orbit Range: 7.75 AU - 11.01 AU

Year: 10709 Days

Day: 13.7 Hours

Environment

Temp: -172 °C

Axial Tilt: 1.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 87,989,116 km

• M1: 183,856 km (0.075 R)
• M2: 802,593 km (0.114 R)
• M3: 1,277,117 km (0.076 R)
• M4: 1,911,711 km (0.099 R)
• M5: 3,374,629 km (0.107 R)
• M6: 3,841,524 km (0.099 R)
• M7: 4,466,843 km (0.116 R)
• M8: 5,577,009 km (0.056 R)
• M9: 6,530,994 km (0.053 R)
• M10: 8,458,862 km (0.118 R)
• M11: 9,652,055 km (0.094 R)
• M12: 10,954,603 km (0.059 R)
• M13: 13,003,047 km (0.105 R)
• M14: 13,906,768 km (0.068 R)

Planet 7 - Ice Giant

Semi-Major Axis: 15.79 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 774.5

Radius: 7

Gravity: 15.81 G

Time & Orbit

Eccentricity (e): 0.066

Orbit Range: 14.75 AU - 16.83 AU

Year: 23390 Days

Day: 17.6 Hours

Environment

Temp: -202 °C

Axial Tilt: 24.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 87,989,116 km

• M1: 103,372 km (0.104 R)
• M2: 323,131 km (0.098 R)
• M3: 661,821 km (0.113 R)
• M4: 3,303,719 km (0.069 R)
• M5: 5,840,301 km (0.106 R)
• M6: 6,740,132 km (0.092 R)
• M7: 8,698,967 km (0.118 R)
• M8: 12,518,200 km (0.118 R)
• M9: 13,026,085 km (0.067 R)
• M10: 14,871,824 km (0.097 R)
• M11: 22,171,601 km (0.044 R)
• M12: 30,237,470 km (0.059 R)
• M13: 35,132,611 km (0.086 R)
• M14: 35,707,067 km (0.077 R)
• M15: 37,917,376 km (0.063 R)
• M16: 44,421,143 km (0.108 R)
• M17: 56,584,796 km (0.105 R)
• M18: 62,684,051 km (0.106 R)
• M19: 63,528,980 km (0.095 R)
• M20: 66,546,070 km (0.092 R)
• M21: 68,089,920 km (0.106 R)
• M22: 73,564,155 km (0.045 R)
• M23: 79,324,421 km (0.111 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 - 14,110 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit