🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.37 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.73 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.07

Radius: 1.75

Gravity: 1.33 G

Time & Orbit

Eccentricity (e): 0.208

Orbit Range: 0.58 AU - 0.88 AU

Year: 239 Days

Day: 15.3 Hours

Environment

Temp: 84 °C

Axial Tilt: 31.1 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 1.15 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.21

Radius: 1.08

Gravity: 1.04 G

Time & Orbit

Eccentricity (e): 0.143

Orbit Range: 0.99 AU - 1.31 AU

Year: 472 Days

Day: 44 Hours

Environment

Temp: -14 °C

Axial Tilt: 35.9 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Satellites (1)

Outer Limit: 57,957,714 km

• M1: 36,651 km (0.115 R)

Planet 3 - Terrestrial

Semi-Major Axis: 2.16 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.68

Radius: 0.86

Gravity: 0.92 G

Time & Orbit

Eccentricity (e): 0.06

Orbit Range: 2.03 AU - 2.29 AU

Year: 1215 Days

Day: 34 Hours

Environment

Temp: -83 °C

Axial Tilt: 33 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 4 - Terrestrial

Semi-Major Axis: 2.28 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.46

Radius: 1.16

Gravity: 1.09 G

Time & Orbit

Eccentricity (e): 0.166

Orbit Range: 1.9 AU - 2.66 AU

Year: 1318 Days

Day: 29.9 Hours

Environment

Temp: -90 °C

Axial Tilt: 11.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 5 - Terrestrial

Semi-Major Axis: 2.81 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.35

Radius: 1.62

Gravity: 1.28 G

Time & Orbit

Eccentricity (e): 0.12

Orbit Range: 2.47 AU - 3.15 AU

Year: 1804 Days

Day: 14.3 Hours

Environment

Temp: -114 °C

Axial Tilt: 27.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 6 - Terrestrial

Semi-Major Axis: 3.06 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.1

Radius: 1.04

Gravity: 1.02 G

Time & Orbit

Eccentricity (e): 0.157

Orbit Range: 2.58 AU - 3.54 AU

Year: 2050 Days

Day: 19.7 Hours

Environment

Temp: -111 °C

Axial Tilt: 21.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 7 - Terrestrial

Semi-Major Axis: 3.29 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.99

Radius: 1.9

Gravity: 1.38 G

Time & Orbit

Eccentricity (e): 0.166

Orbit Range: 2.74 AU - 3.84 AU

Year: 2285 Days

Day: 40.4 Hours

Environment

Temp: -114 °C

Axial Tilt: 35.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Asteroid Belt

Center: 4.45 AU

Composition

Type: Main (Rocky/Icy Mix)

A dense region of planetesimals and debris.

Boundary

Planet 8 - Gas Giant

Semi-Major Axis: 5.6 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 830.6

Radius: 11.2

Gravity: 6.62 G

Time & Orbit

Eccentricity (e): 0.156

Orbit Range: 4.73 AU - 6.47 AU

Year: 5074 Days

Day: 11.1 Hours

Environment

Temp: -157 °C

Axial Tilt: 7.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 57,957,714 km

• M1: 139,575 km (0.12 R)
• M2: 512,971 km (0.088 R)
• M3: 929,003 km (0.103 R)
• M4: 1,624,782 km (0.071 R)
• M5: 2,242,622 km (0.055 R)
• M6: 3,031,002 km (0.098 R)
• M7: 5,265,845 km (0.065 R)
• M8: 6,423,882 km (0.062 R)
• M9: 6,925,035 km (0.093 R)
• M10: 9,575,012 km (0.09 R)
• M11: 10,319,710 km (0.114 R)
• M12: 11,629,738 km (0.061 R)
• M13: 12,375,633 km (0.116 R)
• M14: 12,786,280 km (0.106 R)
• M15: 13,153,094 km (0.094 R)
• M16: 14,128,771 km (0.102 R)
• M17: 14,978,188 km (0.114 R)
• M18: 17,666,461 km (0.079 R)
• M19: 19,124,442 km (0.1 R)
• M20: 20,804,875 km (0.037 R)
• M21: 21,533,267 km (0.094 R)
• M22: 26,774,429 km (0.04 R)
• M23: 28,339,222 km (0.118 R)
• M24: 30,240,761 km (0.083 R)

Planet 9 - Ice Giant

Semi-Major Axis: 11.72 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 513.1

Radius: 4.2

Gravity: 29.09 G

Time & Orbit

Eccentricity (e): 0.177

Orbit Range: 9.65 AU - 13.79 AU

Year: 15362 Days

Day: 17.7 Hours

Environment

Temp: -185 °C

Axial Tilt: 1.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (31)

Outer Limit: 57,957,714 km

• M1: 53,406 km (0.048 R)
• M2: 263,741 km (0.104 R)
• M3: 407,056 km (0.114 R)
• M4: 862,731 km (0.103 R)
• M5: 1,129,763 km (0.051 R)
• M6: 1,309,729 km (0.097 R)
• M7: 1,679,087 km (0.107 R)
• M8: 1,810,882 km (0.059 R)
• M9: 2,152,115 km (0.043 R)
• M10: 3,280,083 km (0.066 R)
• M11: 3,984,988 km (0.086 R)
• M12: 4,131,444 km (0.031 R)
• M13: 4,624,070 km (0.106 R)
• M14: 4,851,609 km (0.074 R)
• M15: 6,496,288 km (0.118 R)
• M16: 10,832,531 km (0.102 R)
• M17: 11,467,574 km (0.089 R)
• M18: 13,002,748 km (0.104 R)
• M19: 13,719,621 km (0.091 R)
• M20: 15,954,463 km (0.104 R)
• M21: 16,324,269 km (0.117 R)
• M22: 21,396,235 km (0.092 R)
• M23: 22,950,707 km (0.104 R)
• M24: 24,189,078 km (0.12 R)
• M25: 30,484,904 km (0.102 R)
• M26: 32,213,657 km (0.118 R)
• M27: 33,042,280 km (0.091 R)
• M28: 35,739,081 km (0.1 R)
• M29: 40,325,901 km (0.057 R)
• M30: 40,873,729 km (0.093 R)
• M31: 56,921,691 km (0.096 R)

Kuiper Belt

Range: 30 - 54 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 363 - 12,334 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit