🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.35 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.7 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.84

Radius: 0.93

Gravity: 0.97 G

Time & Orbit

Eccentricity (e): 0.204

Orbit Range: 0.56 AU - 0.84 AU

Year: 217 Days

Day: 23.3 Hours

Environment

Temp: 163 °C

Axial Tilt: 19.6 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 0.99 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.37

Radius: 1.13

Gravity: 1.07 G

Time & Orbit

Eccentricity (e): 0.032

Orbit Range: 0.96 AU - 1.02 AU

Year: 365 Days

Day: 44.2 Hours

Environment

Temp: 24 °C

Axial Tilt: 2.4 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Planet 3 - Terrestrial

Semi-Major Axis: 1.53 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.62

Radius: 0.83

Gravity: 0.9 G

Time & Orbit

Eccentricity (e): 0.173

Orbit Range: 1.27 AU - 1.79 AU

Year: 702 Days

Day: 32.5 Hours

Environment

Temp: -53 °C

Axial Tilt: 48.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 4 - Terrestrial

Semi-Major Axis: 1.69 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.22

Radius: 0.55

Gravity: 0.73 G

Time & Orbit

Eccentricity (e): 0.1

Orbit Range: 1.52 AU - 1.86 AU

Year: 815 Days

Day: 35.4 Hours

Environment

Temp: -54 °C

Axial Tilt: 13.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Asteroid Belt

Center: 3.28 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 5 - Gas Giant

Semi-Major Axis: 4.86 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 466.1

Radius: 13

Gravity: 2.76 G

Time & Orbit

Eccentricity (e): 0.028

Orbit Range: 4.72 AU - 5 AU

Year: 3973 Days

Day: 10.4 Hours

Environment

Temp: -148 °C

Axial Tilt: 32.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 89,931,432 km

• M1: 161,715 km (0.116 R)
• M2: 862,133 km (0.095 R)
• M3: 1,687,015 km (0.085 R)
• M4: 2,168,870 km (0.045 R)
• M5: 2,856,123 km (0.052 R)
• M6: 8,536,055 km (0.117 R)
• M7: 10,330,331 km (0.079 R)
• M8: 13,380,632 km (0.049 R)
• M9: 14,006,849 km (0.072 R)
• M10: 16,820,336 km (0.062 R)
• M11: 21,195,924 km (0.113 R)

Planet 6 - Gas Giant

Semi-Major Axis: 9.38 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 93.4

Radius: 10.9

Gravity: 0.79 G

Time & Orbit

Eccentricity (e): 0.25

Orbit Range: 7.04 AU - 11.73 AU

Year: 10654 Days

Day: 12 Hours

Environment

Temp: -182 °C

Axial Tilt: 42.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 89,931,432 km

• M1: 138,827 km (0.113 R)
• M2: 734,376 km (0.06 R)
• M3: 1,380,340 km (0.117 R)
• M4: 2,627,238 km (0.112 R)
• M5: 3,452,120 km (0.107 R)
• M6: 4,801,942 km (0.099 R)
• M7: 6,506,161 km (0.108 R)
• M8: 11,196,653 km (0.088 R)
• M9: 13,095,648 km (0.085 R)
• M10: 13,589,620 km (0.106 R)
• M11: 14,405,826 km (0.109 R)
• M12: 16,361,519 km (0.096 R)

Planet 7 - Ice Giant

Semi-Major Axis: 13.2 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 621.3

Radius: 7.8

Gravity: 10.21 G

Time & Orbit

Eccentricity (e): 0.094

Orbit Range: 11.96 AU - 14.44 AU

Year: 17785 Days

Day: 15.6 Hours

Environment

Temp: -188 °C

Axial Tilt: 14.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (32)

Outer Limit: 89,931,432 km

• M1: 97,239 km (0.032 R)
• M2: 345,421 km (0.12 R)
• M3: 726,896 km (0.108 R)
• M4: 1,843,046 km (0.051 R)
• M5: 2,325,648 km (0.079 R)
• M6: 2,631,127 km (0.1 R)
• M7: 2,914,167 km (0.078 R)
• M8: 3,948,187 km (0.108 R)
• M9: 4,482,551 km (0.107 R)
• M10: 7,248,914 km (0.115 R)
• M11: 8,197,066 km (0.098 R)
• M12: 10,629,228 km (0.105 R)
• M13: 12,105,310 km (0.115 R)
• M14: 12,560,536 km (0.12 R)
• M15: 16,150,137 km (0.089 R)
• M16: 17,842,837 km (0.111 R)
• M17: 18,775,131 km (0.105 R)
• M18: 19,473,454 km (0.072 R)
• M19: 20,921,561 km (0.094 R)
• M20: 22,537,368 km (0.104 R)
• M21: 24,132,530 km (0.119 R)
• M22: 25,271,867 km (0.076 R)
• M23: 28,333,538 km (0.072 R)
• M24: 36,242,179 km (0.1 R)
• M25: 38,566,032 km (0.089 R)
• M26: 40,987,423 km (0.052 R)
• M27: 43,056,212 km (0.114 R)
• M28: 43,659,839 km (0.109 R)
• M29: 50,844,726 km (0.091 R)
• M30: 52,370,475 km (0.111 R)
• M31: 63,524,641 km (0.091 R)
• M32: 66,893,585 km (0.086 R)

Planet 8 - Ice Giant

Semi-Major Axis: 17.32 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 633.1

Radius: 7.4

Gravity: 11.56 G

Time & Orbit

Eccentricity (e): 0.009

Orbit Range: 17.16 AU - 17.48 AU

Year: 26732 Days

Day: 19.2 Hours

Environment

Temp: -197 °C

Axial Tilt: 39.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 89,931,432 km

• M1: 98,286 km (0.11 R)
• M2: 349,311 km (0.11 R)
• M3: 2,493,497 km (0.075 R)
• M4: 3,350,095 km (0.116 R)
• M5: 5,299,205 km (0.068 R)
• M6: 7,335,083 km (0.099 R)
• M7: 7,589,399 km (0.087 R)
• M8: 10,532,588 km (0.085 R)
• M9: 16,993,720 km (0.107 R)
• M10: 18,263,058 km (0.059 R)
• M11: 19,207,768 km (0.118 R)
• M12: 19,497,390 km (0.052 R)
• M13: 21,296,753 km (0.116 R)
• M14: 24,764,132 km (0.062 R)
• M15: 30,906,920 km (0.049 R)
• M16: 34,327,924 km (0.077 R)
• M17: 36,497,093 km (0.109 R)
• M18: 47,836,313 km (0.118 R)
• M19: 51,461,069 km (0.117 R)
• M20: 56,047,291 km (0.118 R)
• M21: 63,639,682 km (0.059 R)
• M22: 66,462,145 km (0.055 R)

Kuiper Belt

Range: 30 - 53 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 186 - 15,009 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit