🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.38 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.76 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.9

Radius: 1.29

Gravity: 1.14 G

Time & Orbit

Eccentricity (e): 0.17

Orbit Range: 0.63 AU - 0.89 AU

Year: 236 Days

Day: 30.5 Hours

Environment

Temp: 207 °C

Axial Tilt: 6.5 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 0.85 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.36

Radius: 1.13

Gravity: 1.07 G

Time & Orbit

Eccentricity (e): 0.057

Orbit Range: 0.8 AU - 0.9 AU

Year: 279 Days

Day: 36.2 Hours

Environment

Temp: 165 °C

Axial Tilt: 35.8 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 3 - Terrestrial

Semi-Major Axis: 0.9 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.4

Radius: 1.63

Gravity: 1.28 G

Time & Orbit

Eccentricity (e): 0.103

Orbit Range: 0.81 AU - 0.99 AU

Year: 304 Days

Day: 46.9 Hours

Environment

Temp: 176 °C

Axial Tilt: 35.3 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 4 - Terrestrial

Semi-Major Axis: 1.06 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.89

Radius: 0.95

Gravity: 0.99 G

Time & Orbit

Eccentricity (e): 0.215

Orbit Range: 0.83 AU - 1.29 AU

Year: 389 Days

Day: 39.5 Hours

Environment

Temp: 36 °C

Axial Tilt: 8.9 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Planet 5 - Terrestrial

Semi-Major Axis: 1.13 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.71

Radius: 1.69

Gravity: 1.3 G

Time & Orbit

Eccentricity (e): 0.194

Orbit Range: 0.91 AU - 1.35 AU

Year: 428 Days

Day: 20.1 Hours

Environment

Temp: 36 °C

Axial Tilt: 21.4 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Planet 6 - Terrestrial

Semi-Major Axis: 1.69 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.84

Radius: 1.52

Gravity: 1.23 G

Time & Orbit

Eccentricity (e): 0.13

Orbit Range: 1.47 AU - 1.91 AU

Year: 783 Days

Day: 32.6 Hours

Environment

Temp: -32 °C

Axial Tilt: 0.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 7 - Terrestrial

Semi-Major Axis: 2.28 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.78

Radius: 1.87

Gravity: 1.37 G

Time & Orbit

Eccentricity (e): 0.089

Orbit Range: 2.08 AU - 2.48 AU

Year: 1227 Days

Day: 28.6 Hours

Environment

Temp: -75 °C

Axial Tilt: 42.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 8 - Ice Giant

Semi-Major Axis: 18.61 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 932.1

Radius: 7.6

Gravity: 16.14 G

Time & Orbit

Eccentricity (e): 0.17

Orbit Range: 15.45 AU - 21.77 AU

Year: 28616 Days

Day: 22.4 Hours

Environment

Temp: -195 °C

Axial Tilt: 25.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (33)

Outer Limit: 114,328,013 km

• M1: 96,191 km (0.049 R)
• M2: 477,666 km (0.101 R)
• M3: 1,002,605 km (0.047 R)
• M4: 2,417,651 km (0.112 R)
• M5: 3,406,194 km (0.047 R)
• M6: 3,766,426 km (0.071 R)
• M7: 4,720,112 km (0.086 R)
• M8: 5,601,094 km (0.029 R)
• M9: 6,439,740 km (0.102 R)
• M10: 6,838,268 km (0.102 R)
• M11: 8,778,403 km (0.094 R)
• M12: 10,371,022 km (0.101 R)
• M13: 12,222,445 km (0.036 R)
• M14: 16,200,402 km (0.106 R)
• M15: 26,335,060 km (0.05 R)
• M16: 26,714,141 km (0.059 R)
• M17: 27,483,223 km (0.074 R)
• M18: 28,797,740 km (0.097 R)
• M19: 30,016,065 km (0.1 R)
• M20: 30,987,105 km (0.108 R)
• M21: 31,979,088 km (0.034 R)
• M22: 33,285,227 km (0.091 R)
• M23: 33,728,486 km (0.114 R)
• M24: 37,099,674 km (0.069 R)
• M25: 38,056,651 km (0.073 R)
• M26: 54,451,979 km (0.088 R)
• M27: 60,376,953 km (0.049 R)
• M28: 61,478,292 km (0.115 R)
• M29: 64,404,427 km (0.09 R)
• M30: 75,503,093 km (0.101 R)
• M31: 82,037,976 km (0.076 R)
• M32: 91,227,474 km (0.05 R)
• M33: 91,516,198 km (0.078 R)

Planet 9 - Ice Giant

Semi-Major Axis: 20.12 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 898.2

Radius: 7.6

Gravity: 15.55 G

Time & Orbit

Eccentricity (e): 0.167

Orbit Range: 16.76 AU - 23.48 AU

Year: 32169 Days

Day: 19.6 Hours

Environment

Temp: -194 °C

Axial Tilt: 24.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 114,328,013 km

• M1: 97,239 km (0.057 R)
• M2: 388,206 km (0.053 R)
• M3: 3,087,251 km (0.073 R)
• M4: 4,350,755 km (0.031 R)
• M5: 7,242,183 km (0.045 R)
• M6: 7,852,991 km (0.07 R)
• M7: 8,988,139 km (0.082 R)
• M8: 11,069,195 km (0.082 R)
• M9: 11,580,072 km (0.038 R)
• M10: 12,414,678 km (0.09 R)
• M11: 17,982,412 km (0.058 R)
• M12: 18,790,839 km (0.086 R)
• M13: 20,263,480 km (0.071 R)
• M14: 31,177,243 km (0.067 R)
• M15: 36,171,868 km (0.081 R)
• M16: 37,295,946 km (0.1 R)
• M17: 46,949,945 km (0.057 R)
• M18: 49,845,412 km (0.036 R)
• M19: 60,354,363 km (0.11 R)
• M20: 70,993,614 km (0.088 R)
• M21: 71,744,296 km (0.08 R)
• M22: 83,648,697 km (0.05 R)
• M23: 86,461,735 km (0.093 R)
• M24: 91,683,000 km (0.095 R)
• M25: 101,161,072 km (0.083 R)

Kuiper Belt

Range: 30.8 - 54.8 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 295 - 17,066 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit