🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.55 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 1.1 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.24

Radius: 0.57

Gravity: 0.74 G

Time & Orbit

Eccentricity (e): 0.203

Orbit Range: 0.88 AU - 1.32 AU

Year: 404 Days

Day: 35.9 Hours

Environment

Temp: 147 °C

Axial Tilt: 28.4 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 1.1 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.32

Radius: 0.63

Gravity: 0.81 G

Time & Orbit

Eccentricity (e): 0.035

Orbit Range: 1.06 AU - 1.14 AU

Year: 404 Days

Day: 42.3 Hours

Environment

Temp: 97 °C

Axial Tilt: 28.7 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Satellites (2)

Outer Limit: 85,546,797 km

• M1: 141,370 km (0.102 R)
• M2: 275,410 km (0.081 R)

Planet 3 - Terrestrial

Semi-Major Axis: 1.22 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.84

Radius: 0.93

Gravity: 0.97 G

Time & Orbit

Eccentricity (e): 0.23

Orbit Range: 0.94 AU - 1.5 AU

Year: 471 Days

Day: 37.1 Hours

Environment

Temp: 23 °C

Axial Tilt: 7.3 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Satellites (1)

Outer Limit: 85,546,797 km

• M1: 29,471 km (0.055 R)

Planet 4 - Terrestrial

Semi-Major Axis: 1.27 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.04

Radius: 1.75

Gravity: 1.32 G

Time & Orbit

Eccentricity (e): 0.15

Orbit Range: 1.08 AU - 1.46 AU

Year: 501 Days

Day: 34 Hours

Environment

Temp: 16 °C

Axial Tilt: 43.1 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Planet 5 - Terrestrial

Semi-Major Axis: 1.52 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.09

Radius: 1.04

Gravity: 1.01 G

Time & Orbit

Eccentricity (e): 0.002

Orbit Range: 1.52 AU - 1.52 AU

Year: 656 Days

Day: 31.8 Hours

Environment

Temp: -0 °C

Axial Tilt: 11.4 °

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: 3.33

Radius: 1.62

Gravity: 1.27 G

Time & Orbit

Eccentricity (e): 0.133

Orbit Range: 1.47 AU - 1.91 AU

Year: 769 Days

Day: 26.2 Hours

Environment

Temp: -31 °C

Axial Tilt: 10.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 85,546,797 km

• M1: 37,848 km (0.109 R)

Planet 7 - Terrestrial

Semi-Major Axis: 2.17 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.19

Radius: 1.07

Gravity: 1.04 G

Time & Orbit

Eccentricity (e): 0.177

Orbit Range: 1.79 AU - 2.55 AU

Year: 1118 Days

Day: 31.7 Hours

Environment

Temp: -69 °C

Axial Tilt: 9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 85,546,797 km

• M1: 180,265 km (0.054 R)

Asteroid Belt

Center: 5.37 AU

Composition

Type: Main (Rocky/Icy Mix)

A dense region of planetesimals and debris.

Boundary

Planet 8 - Gas Giant

Semi-Major Axis: 8.56 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 400.2

Radius: 12.1

Gravity: 2.73 G

Time & Orbit

Eccentricity (e): 0.115

Orbit Range: 7.58 AU - 9.54 AU

Year: 8762 Days

Day: 13.7 Hours

Environment

Temp: -171 °C

Axial Tilt: 6.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 85,546,797 km

• M1: 151,094 km (0.045 R)
• M2: 589,266 km (0.055 R)
• M3: 1,098,048 km (0.115 R)
• M4: 1,869,525 km (0.102 R)
• M5: 2,506,662 km (0.083 R)
• M6: 3,116,872 km (0.106 R)
• M7: 4,091,352 km (0.108 R)
• M8: 4,745,394 km (0.076 R)
• M9: 5,377,744 km (0.111 R)
• M10: 5,872,315 km (0.053 R)
• M11: 7,465,831 km (0.107 R)
• M12: 8,043,130 km (0.108 R)
• M13: 10,607,985 km (0.073 R)
• M14: 12,417,072 km (0.098 R)
• M15: 13,789,034 km (0.106 R)
• M16: 14,778,026 km (0.086 R)
• M17: 16,767,378 km (0.074 R)
• M18: 19,931,224 km (0.117 R)
• M19: 21,576,650 km (0.102 R)
• M20: 25,392,593 km (0.028 R)
• M21: 26,346,728 km (0.084 R)
• M22: 29,827,123 km (0.084 R)
• M23: 30,210,392 km (0.073 R)
• M24: 31,183,078 km (0.077 R)
• M25: 33,396,528 km (0.059 R)

Planet 9 - Ice Giant

Semi-Major Axis: 16.4 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 721.3

Radius: 6.8

Gravity: 15.6 G

Time & Orbit

Eccentricity (e): 0.235

Orbit Range: 12.55 AU - 20.25 AU

Year: 23235 Days

Day: 24.4 Hours

Environment

Temp: -184 °C

Axial Tilt: 2.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (28)

Outer Limit: 85,546,797 km

• M1: 97,239 km (0.12 R)
• M2: 428,149 km (0.119 R)
• M3: 778,507 km (0.099 R)
• M4: 1,084,285 km (0.114 R)
• M5: 1,569,431 km (0.067 R)
• M6: 1,842,597 km (0.114 R)
• M7: 2,346,143 km (0.099 R)
• M8: 3,563,571 km (0.108 R)
• M9: 4,206,243 km (0.107 R)
• M10: 4,555,405 km (0.037 R)
• M11: 6,148,772 km (0.078 R)
• M12: 6,926,980 km (0.098 R)
• M13: 13,244,947 km (0.111 R)
• M14: 14,303,352 km (0.075 R)
• M15: 17,458,820 km (0.054 R)
• M16: 20,158,313 km (0.047 R)
• M17: 28,037,783 km (0.115 R)
• M18: 30,543,397 km (0.07 R)
• M19: 33,194,421 km (0.084 R)
• M20: 35,138,745 km (0.068 R)
• M21: 47,033,571 km (0.086 R)
• M22: 58,922,413 km (0.11 R)
• M23: 64,912,012 km (0.116 R)
• M24: 66,632,986 km (0.116 R)
• M25: 79,295,997 km (0.1 R)
• M26: 84,017,755 km (0.118 R)
• M27: 84,779,956 km (0.055 R)
• M28: 85,290,683 km (0.067 R)

Kuiper Belt

Range: 31.4 - 53.4 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 356 - 19,169 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit