🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.33 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.66 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.94

Radius: 1.3

Gravity: 1.15 G

Time & Orbit

Eccentricity (e): 0.196

Orbit Range: 0.53 AU - 0.79 AU

Year: 225 Days

Day: 37.8 Hours

Environment

Temp: 33 °C

Axial Tilt: 31.7 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Satellites (1)

Outer Limit: 29,453,867 km

• M1: 44,879 km (0.077 R)

Planet 2 - Terrestrial

Semi-Major Axis: 1.6 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.58

Radius: 1.84

Gravity: 1.35 G

Time & Orbit

Eccentricity (e): 0.161

Orbit Range: 1.34 AU - 1.86 AU

Year: 848 Days

Day: 17.3 Hours

Environment

Temp: -98 °C

Axial Tilt: 42.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Terrestrial

Semi-Major Axis: 2.05 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.72

Radius: 0.88

Gravity: 0.93 G

Time & Orbit

Eccentricity (e): 0.091

Orbit Range: 1.86 AU - 2.24 AU

Year: 1230 Days

Day: 18.4 Hours

Environment

Temp: -115 °C

Axial Tilt: 6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 4 - Terrestrial

Semi-Major Axis: 2.25 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.3

Radius: 1.61

Gravity: 1.27 G

Time & Orbit

Eccentricity (e): 0.169

Orbit Range: 1.87 AU - 2.63 AU

Year: 1414 Days

Day: 46.4 Hours

Environment

Temp: -128 °C

Axial Tilt: 5.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 5 - Terrestrial

Semi-Major Axis: 2.88 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.4

Radius: 1.42

Gravity: 1.19 G

Time & Orbit

Eccentricity (e): 0.041

Orbit Range: 2.76 AU - 3 AU

Year: 2048 Days

Day: 23.6 Hours

Environment

Temp: -136 °C

Axial Tilt: 85.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 29,453,867 km

• M1: 35,903 km (0.109 R)

Asteroid Belt

Center: 3.55 AU

Composition

Type: Main (Rocky/Icy Mix)

A dense region of planetesimals and debris.

Boundary

Planet 6 - Gas Giant

Semi-Major Axis: 4.22 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 796.5

Radius: 10.4

Gravity: 7.36 G

Time & Orbit

Eccentricity (e): 0.086

Orbit Range: 3.86 AU - 4.58 AU

Year: 3632 Days

Day: 14.8 Hours

Environment

Temp: -158 °C

Axial Tilt: 4.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (27)

Outer Limit: 29,453,867 km

• M1: 129,402 km (0.113 R)
• M2: 500,255 km (0.091 R)
• M3: 853,605 km (0.078 R)
• M4: 1,787,844 km (0.092 R)
• M5: 2,581,910 km (0.099 R)
• M6: 3,114,478 km (0.071 R)
• M7: 4,216,715 km (0.1 R)
• M8: 4,782,943 km (0.036 R)
• M9: 5,110,413 km (0.112 R)
• M10: 5,616,203 km (0.105 R)
• M11: 6,155,055 km (0.081 R)
• M12: 6,573,779 km (0.097 R)
• M13: 7,075,830 km (0.08 R)
• M14: 8,923,513 km (0.059 R)
• M15: 10,101,596 km (0.077 R)
• M16: 10,432,507 km (0.051 R)
• M17: 13,102,530 km (0.094 R)
• M18: 13,446,904 km (0.069 R)
• M19: 13,949,403 km (0.112 R)
• M20: 14,938,694 km (0.051 R)
• M21: 15,642,103 km (0.068 R)
• M22: 16,595,041 km (0.097 R)
• M23: 17,586,277 km (0.111 R)
• M24: 18,554,624 km (0.096 R)
• M25: 22,364,882 km (0.104 R)
• M26: 24,527,020 km (0.053 R)
• M27: 25,277,552 km (0.072 R)

Planet 7 - Gas Giant

Semi-Major Axis: 6.46 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 123.4

Radius: 10.3

Gravity: 1.16 G

Time & Orbit

Eccentricity (e): 0.17

Orbit Range: 5.36 AU - 7.56 AU

Year: 6879 Days

Day: 6.8 Hours

Environment

Temp: -176 °C

Axial Tilt: 23 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 29,453,867 km

• M1: 128,205 km (0.089 R)
• M2: 623,823 km (0.087 R)
• M3: 1,381,536 km (0.084 R)
• M4: 1,951,055 km (0.086 R)
• M5: 2,876,917 km (0.102 R)
• M6: 3,356,976 km (0.078 R)
• M7: 3,712,570 km (0.119 R)
• M8: 5,198,227 km (0.102 R)
• M9: 6,663,089 km (0.068 R)
• M10: 7,350,940 km (0.073 R)
• M11: 9,663,274 km (0.089 R)
• M12: 10,078,409 km (0.088 R)
• M13: 11,271,152 km (0.116 R)
• M14: 13,887,918 km (0.102 R)
• M15: 15,413,517 km (0.117 R)
• M16: 17,822,941 km (0.118 R)

Planet 8 - Gas Giant

Semi-Major Axis: 7.69 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 199.1

Radius: 13.8

Gravity: 1.05 G

Time & Orbit

Eccentricity (e): 0.111

Orbit Range: 6.84 AU - 8.54 AU

Year: 8935 Days

Day: 12.4 Hours

Environment

Temp: -178 °C

Axial Tilt: 161 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (27)

Outer Limit: 29,453,867 km

• M1: 171,738 km (0.082 R)
• M2: 640,279 km (0.094 R)
• M3: 1,195,437 km (0.106 R)
• M4: 1,654,852 km (0.05 R)
• M5: 2,356,615 km (0.062 R)
• M6: 3,553,697 km (0.089 R)
• M7: 4,194,724 km (0.104 R)
• M8: 4,630,503 km (0.069 R)
• M9: 7,598,674 km (0.103 R)
• M10: 8,325,122 km (0.074 R)
• M11: 9,460,420 km (0.116 R)
• M12: 9,959,329 km (0.064 R)
• M13: 10,920,046 km (0.106 R)
• M14: 12,037,542 km (0.092 R)
• M15: 12,975,222 km (0.045 R)
• M16: 15,164,138 km (0.063 R)
• M17: 18,218,178 km (0.091 R)
• M18: 19,387,585 km (0.07 R)
• M19: 19,923,295 km (0.069 R)
• M20: 20,675,772 km (0.099 R)
• M21: 21,234,969 km (0.118 R)
• M22: 21,732,531 km (0.112 R)
• M23: 22,677,242 km (0.118 R)
• M24: 23,122,445 km (0.094 R)
• M25: 23,725,026 km (0.079 R)
• M26: 27,228,757 km (0.114 R)
• M27: 27,985,722 km (0.111 R)

Kuiper Belt

Range: 30 - 50 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 220 - 18,787 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit