🌌 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: 0.65 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.17

Radius: 1.59

Gravity: 1.25 G

Time & Orbit

Eccentricity (e): 0.078

Orbit Range: 0.6 AU - 0.7 AU

Year: 194 Days

Day: 32.6 Hours

Environment

Temp: 117 °C

Axial Tilt: 47.3 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Satellites (1)

Outer Limit: 60,832,245 km

• M1: 82,728 km (0.069 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.99 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.19

Radius: 1.77

Gravity: 1.34 G

Time & Orbit

Eccentricity (e): 0.031

Orbit Range: 0.96 AU - 1.02 AU

Year: 365 Days

Day: 25 Hours

Environment

Temp: 30 °C

Axial Tilt: 11.7 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Planet 3 - Terrestrial

Semi-Major Axis: 1.11 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.41

Radius: 0.7

Gravity: 0.84 G

Time & Orbit

Eccentricity (e): 0.134

Orbit Range: 0.96 AU - 1.26 AU

Year: 434 Days

Day: 16.9 Hours

Environment

Temp: 15 °C

Axial Tilt: 34.5 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Planet 4 - Terrestrial

Semi-Major Axis: 1.14 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.18

Radius: 0.5

Gravity: 0.72 G

Time & Orbit

Eccentricity (e): 0.142

Orbit Range: 0.98 AU - 1.3 AU

Year: 451 Days

Day: 30 Hours

Environment

Temp: 6 °C

Axial Tilt: 29.9 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Planet 5 - Terrestrial

Semi-Major Axis: 1.37 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.92

Radius: 1.54

Gravity: 1.23 G

Time & Orbit

Eccentricity (e): 0.239

Orbit Range: 1.04 AU - 1.7 AU

Year: 595 Days

Day: 45.5 Hours

Environment

Temp: -34 °C

Axial Tilt: 1.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 6 - Terrestrial

Semi-Major Axis: 3.23 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.7

Radius: 1.24

Gravity: 1.11 G

Time & Orbit

Eccentricity (e): 0.119

Orbit Range: 2.85 AU - 3.61 AU

Year: 2153 Days

Day: 19.2 Hours

Environment

Temp: -107 °C

Axial Tilt: 15.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Asteroid Belt

Center: 6.48 AU

Composition

Type: Main (Rocky/Icy Mix)

A dense region of planetesimals and debris.

Boundary

Planet 7 - Gas Giant

Semi-Major Axis: 9.73 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 21.2

Radius: 12.2

Gravity: 0.14 G

Time & Orbit

Eccentricity (e): 0.146

Orbit Range: 8.31 AU - 11.15 AU

Year: 11256 Days

Day: 13.1 Hours

Environment

Temp: -174 °C

Axial Tilt: 18.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 60,832,245 km

• M1: 152,889 km (0.11 R)
• M2: 557,551 km (0.071 R)
• M3: 2,879,909 km (0.052 R)
• M4: 3,266,918 km (0.112 R)
• M5: 4,282,389 km (0.074 R)
• M6: 5,179,677 km (0.053 R)
• M7: 6,715,448 km (0.047 R)
• M8: 8,380,622 km (0.101 R)
• M9: 11,678,657 km (0.118 R)
• M10: 12,550,663 km (0.087 R)
• M11: 14,291,234 km (0.078 R)
• M12: 15,335,427 km (0.086 R)
• M13: 16,187,537 km (0.055 R)

Planet 8 - Gas Giant

Semi-Major Axis: 9.87 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 332.8

Radius: 12.3

Gravity: 2.2 G

Time & Orbit

Eccentricity (e): 0.229

Orbit Range: 7.61 AU - 12.13 AU

Year: 11500 Days

Day: 12.4 Hours

Environment

Temp: -181 °C

Axial Tilt: 35 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 60,832,245 km

• M1: 153,188 km (0.039 R)
• M2: 597,793 km (0.098 R)
• M3: 1,057,507 km (0.116 R)
• M4: 2,308,744 km (0.092 R)
• M5: 3,076,929 km (0.098 R)
• M6: 3,591,845 km (0.093 R)
• M7: 6,287,748 km (0.111 R)
• M8: 6,934,310 km (0.086 R)
• M9: 10,704,027 km (0.095 R)
• M10: 12,053,848 km (0.08 R)
• M11: 14,530,740 km (0.087 R)
• M12: 15,469,617 km (0.116 R)
• M13: 16,315,443 km (0.048 R)
• M14: 16,918,921 km (0.09 R)
• M15: 21,093,300 km (0.114 R)
• M16: 24,751,566 km (0.032 R)
• M17: 28,619,269 km (0.095 R)
• M18: 30,494,628 km (0.051 R)
• M19: 33,191,579 km (0.09 R)
• M20: 35,149,516 km (0.113 R)
• M21: 36,156,758 km (0.052 R)
• M22: 37,413,979 km (0.097 R)

Planet 9 - Ice Giant

Semi-Major Axis: 14.74 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 317.9

Radius: 5.2

Gravity: 11.76 G

Time & Orbit

Eccentricity (e): 0.109

Orbit Range: 13.13 AU - 16.35 AU

Year: 20987 Days

Day: 22.8 Hours

Environment

Temp: -185 °C

Axial Tilt: 33.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (29)

Outer Limit: 60,832,245 km

• M1: 73,153 km (0.112 R)
• M2: 308,920 km (0.097 R)
• M3: 481,406 km (0.083 R)
• M4: 980,315 km (0.09 R)
• M5: 1,145,022 km (0.117 R)
• M6: 1,471,445 km (0.106 R)
• M7: 1,982,172 km (0.111 R)
• M8: 2,923,591 km (0.098 R)
• M9: 3,294,893 km (0.107 R)
• M10: 3,953,722 km (0.069 R)
• M11: 6,743,124 km (0.067 R)
• M12: 7,479,744 km (0.109 R)
• M13: 8,413,384 km (0.095 R)
• M14: 9,370,063 km (0.108 R)
• M15: 11,318,425 km (0.114 R)
• M16: 11,738,047 km (0.11 R)
• M17: 14,407,621 km (0.037 R)
• M18: 16,830,060 km (0.085 R)
• M19: 18,670,562 km (0.111 R)
• M20: 18,836,765 km (0.069 R)
• M21: 20,464,540 km (0.1 R)
• M22: 21,722,209 km (0.092 R)
• M23: 22,183,719 km (0.065 R)
• M24: 23,899,157 km (0.086 R)
• M25: 30,025,489 km (0.109 R)
• M26: 32,001,528 km (0.036 R)
• M27: 35,697,343 km (0.08 R)
• M28: 39,258,072 km (0.076 R)
• M29: 57,961,845 km (0.101 R)

Kuiper Belt

Range: 30 - 55 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 325 - 16,006 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit