🌌 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: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.22

Radius: 1.38

Gravity: 1.17 G

Time & Orbit

Eccentricity (e): 0.192

Orbit Range: 0.53 AU - 0.79 AU

Year: 197 Days

Day: 25.6 Hours

Environment

Temp: 162 °C

Axial Tilt: 14.8 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Satellites (1)

Outer Limit: 52,342,197 km

• M1: 36,651 km (0.109 R)

Planet 2 - Terrestrial

Semi-Major Axis: 1.11 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.58

Radius: 1.46

Gravity: 1.21 G

Time & Orbit

Eccentricity (e): 0.103

Orbit Range: 1 AU - 1.22 AU

Year: 429 Days

Day: 27.7 Hours

Environment

Temp: 26 °C

Axial Tilt: 35.8 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Planet 3 - Terrestrial

Semi-Major Axis: 2.49 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.78

Radius: 1.87

Gravity: 1.37 G

Time & Orbit

Eccentricity (e): 0.189

Orbit Range: 2.02 AU - 2.96 AU

Year: 1442 Days

Day: 40.6 Hours

Environment

Temp: -82 °C

Axial Tilt: 41.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 52,342,197 km

• M1: 1,484,908 km (0.065 R)

Planet 4 - Terrestrial

Semi-Major Axis: 2.92 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.15

Radius: 0.47

Gravity: 0.68 G

Time & Orbit

Eccentricity (e): 0.171

Orbit Range: 2.42 AU - 3.42 AU

Year: 1832 Days

Day: 27.9 Hours

Environment

Temp: -95 °C

Axial Tilt: 44 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 5 - Terrestrial

Semi-Major Axis: 3.85 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.14

Radius: 1.36

Gravity: 1.16 G

Time & Orbit

Eccentricity (e): 0.023

Orbit Range: 3.76 AU - 3.94 AU

Year: 2773 Days

Day: 18.3 Hours

Environment

Temp: -127 °C

Axial Tilt: 0.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 6 - Terrestrial

Semi-Major Axis: 4.38 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.99

Radius: 1.32

Gravity: 1.14 G

Time & Orbit

Eccentricity (e): 0.14

Orbit Range: 3.77 AU - 4.99 AU

Year: 3365 Days

Day: 24.1 Hours

Environment

Temp: -140 °C

Axial Tilt: 20.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 7 - Terrestrial

Semi-Major Axis: 4.38 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.07

Radius: 1.57

Gravity: 1.25 G

Time & Orbit

Eccentricity (e): 0.014

Orbit Range: 4.32 AU - 4.44 AU

Year: 3365 Days

Day: 38.8 Hours

Environment

Temp: -141 °C

Axial Tilt: 38 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 8 - Gas Giant

Semi-Major Axis: 5.46 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 192.2

Radius: 14.9

Gravity: 0.87 G

Time & Orbit

Eccentricity (e): 0.207

Orbit Range: 4.33 AU - 6.59 AU

Year: 4683 Days

Day: 10.3 Hours

Environment

Temp: -152 °C

Axial Tilt: 43.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 52,342,197 km

• M1: 185,352 km (0.101 R)
• M2: 1,271,432 km (0.028 R)
• M3: 1,738,477 km (0.099 R)
• M4: 2,458,192 km (0.084 R)
• M5: 3,070,945 km (0.088 R)
• M6: 4,073,251 km (0.06 R)
• M7: 5,307,882 km (0.056 R)
• M8: 7,208,972 km (0.074 R)
• M9: 7,965,189 km (0.102 R)
• M10: 9,250,235 km (0.06 R)
• M11: 10,555,476 km (0.087 R)
• M12: 11,531,901 km (0.114 R)
• M13: 14,635,160 km (0.059 R)
• M14: 16,353,740 km (0.052 R)
• M15: 18,039,558 km (0.094 R)

Planet 9 - Gas Giant

Semi-Major Axis: 9.49 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 66.7

Radius: 12.4

Gravity: 0.43 G

Time & Orbit

Eccentricity (e): 0.024

Orbit Range: 9.26 AU - 9.72 AU

Year: 10732 Days

Day: 10.6 Hours

Environment

Temp: -183 °C

Axial Tilt: 1.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 52,342,197 km

• M1: 154,235 km (0.038 R)
• M2: 731,833 km (0.12 R)
• M3: 1,736,682 km (0.093 R)
• M4: 3,850,649 km (0.099 R)
• M5: 5,015,269 km (0.112 R)
• M6: 8,268,424 km (0.047 R)
• M7: 9,496,174 km (0.104 R)
• M8: 10,433,703 km (0.05 R)
• M9: 13,714,534 km (0.089 R)
• M10: 15,118,062 km (0.107 R)
• M11: 16,560,035 km (0.107 R)

Planet 10 - Ice Giant

Semi-Major Axis: 12.93 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 306.2

Radius: 4.6

Gravity: 14.47 G

Time & Orbit

Eccentricity (e): 0.171

Orbit Range: 10.72 AU - 15.14 AU

Year: 17068 Days

Day: 18.9 Hours

Environment

Temp: -176 °C

Axial Tilt: 16.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 52,342,197 km

• M1: 66,870 km (0.1 R)
• M2: 233,672 km (0.103 R)
• M3: 488,138 km (0.074 R)
• M4: 753,225 km (0.12 R)
• M5: 1,254,827 km (0.052 R)
• M6: 1,802,804 km (0.118 R)
• M7: 2,279,722 km (0.087 R)
• M8: 3,556,241 km (0.098 R)
• M9: 6,632,122 km (0.111 R)
• M10: 7,282,424 km (0.079 R)
• M11: 7,841,172 km (0.096 R)
• M12: 10,153,507 km (0.115 R)
• M13: 12,042,030 km (0.08 R)
• M14: 12,219,154 km (0.105 R)
• M15: 13,763,453 km (0.115 R)
• M16: 14,682,732 km (0.073 R)
• M17: 17,458,371 km (0.086 R)
• M18: 18,067,982 km (0.113 R)
• M19: 20,480,696 km (0.036 R)
• M20: 22,918,543 km (0.06 R)
• M21: 27,843,604 km (0.064 R)
• M22: 29,309,364 km (0.059 R)
• M23: 30,061,243 km (0.091 R)
• M24: 39,979,582 km (0.116 R)
• M25: 40,242,126 km (0.116 R)

Kuiper Belt

Range: 30 - 49 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 192 - 17,567 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit