🌌 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: 4.87

Radius: 1.88

Gravity: 1.38 G

Time & Orbit

Eccentricity (e): 0.095

Orbit Range: 0.52 AU - 0.64 AU

Year: 155 Days

Day: 16.2 Hours

Environment

Temp: 253 °C

Axial Tilt: 19.6 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 0.71 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.37

Radius: 1.41

Gravity: 1.19 G

Time & Orbit

Eccentricity (e): 0.047

Orbit Range: 0.68 AU - 0.74 AU

Year: 209 Days

Day: 26.2 Hours

Environment

Temp: 204 °C

Axial Tilt: 29 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 3 - Terrestrial

Semi-Major Axis: 1.1 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.27

Radius: 1.39

Gravity: 1.17 G

Time & Orbit

Eccentricity (e): 0.157

Orbit Range: 0.93 AU - 1.27 AU

Year: 404 Days

Day: 39.4 Hours

Environment

Temp: 148 °C

Axial Tilt: 41 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 4 - Terrestrial

Semi-Major Axis: 1.13 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.17

Radius: 1.06

Gravity: 1.04 G

Time & Orbit

Eccentricity (e): 0.05

Orbit Range: 1.07 AU - 1.19 AU

Year: 420 Days

Day: 18.2 Hours

Environment

Temp: 41 °C

Axial Tilt: 43.9 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Satellites (1)

Outer Limit: 44,581,458 km

• M1: 25,581 km (0.086 R)

Planet 5 - Terrestrial

Semi-Major Axis: 1.41 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.77

Radius: 0.9

Gravity: 0.95 G

Time & Orbit

Eccentricity (e): 0.15

Orbit Range: 1.2 AU - 1.62 AU

Year: 586 Days

Day: 21.8 Hours

Environment

Temp: -11 °C

Axial Tilt: 1.2 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Satellites (2)

Outer Limit: 44,581,458 km

• M1: 25,731 km (0.117 R)
• M2: 89,310 km (0.075 R)

Planet 6 - Terrestrial

Semi-Major Axis: 1.88 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.12

Radius: 0.43

Gravity: 0.65 G

Time & Orbit

Eccentricity (e): 0.237

Orbit Range: 1.43 AU - 2.33 AU

Year: 902 Days

Day: 25.8 Hours

Environment

Temp: -52 °C

Axial Tilt: 18.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 7 - Terrestrial

Semi-Major Axis: 3.47 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.32

Radius: 0.63

Gravity: 0.81 G

Time & Orbit

Eccentricity (e): 0.089

Orbit Range: 3.16 AU - 3.78 AU

Year: 2261 Days

Day: 19.3 Hours

Environment

Temp: -100 °C

Axial Tilt: 37.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Asteroid Belt

Center: 7.75 AU

Composition

Type: Main (Rocky/Icy Mix)

A dense region of planetesimals and debris.

Boundary

Planet 8 - Gas Giant

Semi-Major Axis: 12.03 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 799.9

Radius: 11.8

Gravity: 5.74 G

Time & Orbit

Eccentricity (e): 0.243

Orbit Range: 9.11 AU - 14.95 AU

Year: 14597 Days

Day: 9.1 Hours

Environment

Temp: -177 °C

Axial Tilt: 3.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (31)

Outer Limit: 44,581,458 km

• M1: 147,354 km (0.11 R)
• M2: 537,505 km (0.116 R)
• M3: 2,330,585 km (0.111 R)
• M4: 2,716,398 km (0.114 R)
• M5: 3,990,972 km (0.058 R)
• M6: 4,948,099 km (0.09 R)
• M7: 5,857,505 km (0.102 R)
• M8: 7,224,530 km (0.099 R)
• M9: 7,724,486 km (0.102 R)
• M10: 8,345,168 km (0.094 R)
• M11: 8,793,961 km (0.096 R)
• M12: 10,238,478 km (0.11 R)
• M13: 10,811,737 km (0.112 R)
• M14: 11,897,519 km (0.103 R)
• M15: 13,797,860 km (0.114 R)
• M16: 14,285,400 km (0.072 R)
• M17: 14,928,970 km (0.1 R)
• M18: 20,885,658 km (0.096 R)
• M19: 21,621,829 km (0.092 R)
• M20: 22,185,215 km (0.05 R)
• M21: 23,048,843 km (0.115 R)
• M22: 23,636,912 km (0.1 R)
• M23: 27,596,319 km (0.083 R)
• M24: 32,955,663 km (0.088 R)
• M25: 33,452,029 km (0.076 R)
• M26: 38,283,890 km (0.11 R)
• M27: 42,674,887 km (0.063 R)
• M28: 46,141,818 km (0.102 R)
• M29: 50,118,428 km (0.062 R)
• M30: 58,383,711 km (0.085 R)
• M31: 59,293,565 km (0.117 R)

Planet 9 - Gas Giant

Semi-Major Axis: 12.53 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 228.9

Radius: 8.2

Gravity: 3.4 G

Time & Orbit

Eccentricity (e): 0.162

Orbit Range: 10.5 AU - 14.56 AU

Year: 15517 Days

Day: 8.9 Hours

Environment

Temp: -175 °C

Axial Tilt: 38.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 44,581,458 km

• M1: 136,583 km (0.109 R)
• M2: 525,837 km (0.063 R)
• M3: 1,339,350 km (0.118 R)
• M4: 1,804,300 km (0.086 R)
• M5: 2,318,617 km (0.101 R)
• M6: 2,781,324 km (0.041 R)
• M7: 3,865,160 km (0.083 R)
• M8: 5,595,409 km (0.082 R)
• M9: 6,875,069 km (0.12 R)
• M10: 7,223,333 km (0.079 R)
• M11: 8,081,875 km (0.088 R)
• M12: 8,735,618 km (0.073 R)
• M13: 13,781,554 km (0.116 R)
• M14: 15,033,838 km (0.111 R)
• M15: 26,465,210 km (0.119 R)
• M16: 32,527,514 km (0.098 R)
• M17: 41,582,374 km (0.112 R)

Kuiper Belt

Range: 31.4 - 61.4 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 166 - 14,250 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit