🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.52 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 1.04 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.56

Radius: 1.46

Gravity: 1.2 G

Time & Orbit

Eccentricity (e): 0.116

Orbit Range: 0.92 AU - 1.16 AU

Year: 373 Days

Day: 41.3 Hours

Environment

Temp: 163 °C

Axial Tilt: 31.9 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Satellites (1)

Outer Limit: 104,005,600 km

• M1: 58,642 km (0.047 R)

Planet 2 - Terrestrial

Semi-Major Axis: 1.18 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.16

Radius: 1.77

Gravity: 1.33 G

Time & Orbit

Eccentricity (e): 0.034

Orbit Range: 1.14 AU - 1.22 AU

Year: 451 Days

Day: 12.2 Hours

Environment

Temp: 22 °C

Axial Tilt: 136.1 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Satellites (1)

Outer Limit: 104,005,600 km

• M1: 41,289 km (0.108 R)

Planet 3 - Terrestrial

Semi-Major Axis: 2.99 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.8

Radius: 0.91

Gravity: 0.97 G

Time & Orbit

Eccentricity (e): 0.037

Orbit Range: 2.88 AU - 3.1 AU

Year: 1817 Days

Day: 32.6 Hours

Environment

Temp: -101 °C

Axial Tilt: 4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 104,005,600 km

• M1: 53,406 km (0.094 R)
• M2: 1,595,611 km (0.081 R)

Planet 4 - Terrestrial

Semi-Major Axis: 3.11 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.2

Radius: 1.78

Gravity: 1.33 G

Time & Orbit

Eccentricity (e): 0.059

Orbit Range: 2.93 AU - 3.29 AU

Year: 1928 Days

Day: 41.8 Hours

Environment

Temp: -103 °C

Axial Tilt: 17.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 5 - Terrestrial

Semi-Major Axis: 3.13 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.26

Radius: 1.79

Gravity: 1.33 G

Time & Orbit

Eccentricity (e): 0.102

Orbit Range: 2.81 AU - 3.45 AU

Year: 1946 Days

Day: 42.2 Hours

Environment

Temp: -96 °C

Axial Tilt: 6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 104,005,600 km

• M1: 775,067 km (0.07 R)

Planet 6 - Terrestrial

Semi-Major Axis: 3.47 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.6

Radius: 1.84

Gravity: 1.36 G

Time & Orbit

Eccentricity (e): 0.108

Orbit Range: 3.1 AU - 3.84 AU

Year: 2272 Days

Day: 18.7 Hours

Environment

Temp: -103 °C

Axial Tilt: 4.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 7 - Ice Giant

Semi-Major Axis: 18.67 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 134.1

Radius: 4.7

Gravity: 6.07 G

Time & Orbit

Eccentricity (e): 0.008

Orbit Range: 18.52 AU - 18.82 AU

Year: 28353 Days

Day: 15.5 Hours

Environment

Temp: -203 °C

Axial Tilt: 39.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 104,005,600 km

• M1: 63,878 km (0.104 R)
• M2: 351,854 km (0.081 R)
• M3: 1,532,331 km (0.11 R)
• M4: 1,917,845 km (0.103 R)
• M5: 3,212,165 km (0.117 R)
• M6: 4,244,092 km (0.066 R)
• M7: 5,658,390 km (0.099 R)
• M8: 11,909,187 km (0.093 R)
• M9: 14,251,890 km (0.061 R)
• M10: 16,585,617 km (0.095 R)
• M11: 17,803,792 km (0.045 R)
• M12: 18,594,567 km (0.096 R)
• M13: 20,846,762 km (0.055 R)
• M14: 21,724,902 km (0.098 R)
• M15: 23,649,179 km (0.06 R)
• M16: 25,584,527 km (0.096 R)
• M17: 26,488,846 km (0.067 R)
• M18: 29,767,134 km (0.088 R)
• M19: 31,560,364 km (0.107 R)
• M20: 35,980,532 km (0.088 R)
• M21: 45,147,141 km (0.066 R)
• M22: 52,961,536 km (0.055 R)
• M23: 53,610,043 km (0.115 R)

Planet 8 - Ice Giant

Semi-Major Axis: 19.82 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 727.6

Radius: 3.7

Gravity: 53.15 G

Time & Orbit

Eccentricity (e): 0.052

Orbit Range: 18.79 AU - 20.85 AU

Year: 31012 Days

Day: 24.5 Hours

Environment

Temp: -193 °C

Axial Tilt: 19.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (40)

Outer Limit: 104,005,600 km

• M1: 46,375 km (0.093 R)
• M2: 307,573 km (0.119 R)
• M3: 1,214,436 km (0.095 R)
• M4: 1,483,113 km (0.089 R)
• M5: 2,377,409 km (0.059 R)
• M6: 5,226,950 km (0.065 R)
• M7: 6,165,527 km (0.08 R)
• M8: 7,211,066 km (0.1 R)
• M9: 7,638,617 km (0.109 R)
• M10: 8,485,790 km (0.03 R)
• M11: 8,962,259 km (0.075 R)
• M12: 9,207,001 km (0.101 R)
• M13: 9,903,379 km (0.085 R)
• M14: 15,435,807 km (0.081 R)
• M15: 17,722,411 km (0.112 R)
• M16: 18,400,987 km (0.049 R)
• M17: 19,706,827 km (0.053 R)
• M18: 24,110,090 km (0.09 R)
• M19: 27,554,731 km (0.065 R)
• M20: 28,202,490 km (0.069 R)
• M21: 28,727,878 km (0.09 R)
• M22: 32,160,700 km (0.119 R)
• M23: 34,495,474 km (0.098 R)
• M24: 37,254,358 km (0.078 R)
• M25: 39,991,550 km (0.109 R)
• M26: 40,156,556 km (0.093 R)
• M27: 40,488,065 km (0.1 R)
• M28: 43,554,074 km (0.108 R)
• M29: 48,250,549 km (0.037 R)
• M30: 62,993,120 km (0.061 R)
• M31: 64,341,895 km (0.107 R)
• M32: 68,032,624 km (0.111 R)
• M33: 71,618,634 km (0.087 R)
• M34: 72,595,658 km (0.104 R)
• M35: 80,208,694 km (0.05 R)
• M36: 92,887,711 km (0.071 R)
• M37: 96,401,915 km (0.06 R)
• M38: 100,612,497 km (0.1 R)
• M39: 100,917,826 km (0.068 R)
• M40: 101,530,429 km (0.094 R)

Kuiper Belt

Range: 31.2 - 52.2 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 360 - 18,586 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit