🌌 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: 2.12

Radius: 1.35

Gravity: 1.16 G

Time & Orbit

Eccentricity (e): 0.198

Orbit Range: 0.52 AU - 0.78 AU

Year: 190 Days

Day: 29.1 Hours

Environment

Temp: 143 °C

Axial Tilt: 0.9 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 0.78 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.6

Radius: 1.47

Gravity: 1.2 G

Time & Orbit

Eccentricity (e): 0.176

Orbit Range: 0.64 AU - 0.92 AU

Year: 249 Days

Day: 40.7 Hours

Environment

Temp: 135 °C

Axial Tilt: 124.4 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 3 - Terrestrial

Semi-Major Axis: 0.81 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.98

Radius: 1.31

Gravity: 1.15 G

Time & Orbit

Eccentricity (e): 0.161

Orbit Range: 0.68 AU - 0.94 AU

Year: 264 Days

Day: 23.2 Hours

Environment

Temp: 109 °C

Axial Tilt: 37.9 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Satellites (2)

Outer Limit: 72,357,723 km

• M1: 51,910 km (0.105 R)
• M2: 439,519 km (0.065 R)

Planet 4 - Terrestrial

Semi-Major Axis: 0.94 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.29

Radius: 1.61

Gravity: 1.27 G

Time & Orbit

Eccentricity (e): 0.099

Orbit Range: 0.85 AU - 1.03 AU

Year: 330 Days

Day: 15.2 Hours

Environment

Temp: 138 °C

Axial Tilt: 5.2 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 5 - Terrestrial

Semi-Major Axis: 1.01 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.16

Radius: 1.77

Gravity: 1.33 G

Time & Orbit

Eccentricity (e): 0.161

Orbit Range: 0.85 AU - 1.17 AU

Year: 367 Days

Day: 24.1 Hours

Environment

Temp: 37 °C

Axial Tilt: 8.3 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Satellites (2)

Outer Limit: 72,357,723 km

• M1: 135,984 km (0.104 R)
• M2: 305,928 km (0.097 R)

Planet 6 - Terrestrial

Semi-Major Axis: 2.38 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.25

Radius: 1.78

Gravity: 1.34 G

Time & Orbit

Eccentricity (e): 0.073

Orbit Range: 2.21 AU - 2.55 AU

Year: 1328 Days

Day: 30.2 Hours

Environment

Temp: -73 °C

Axial Tilt: 35.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 72,357,723 km

• M1: 217,964 km (0.112 R)

Planet 7 - Terrestrial

Semi-Major Axis: 3.04 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.99

Radius: 1

Gravity: 0.99 G

Time & Orbit

Eccentricity (e): 0.094

Orbit Range: 2.75 AU - 3.33 AU

Year: 1917 Days

Day: 16.9 Hours

Environment

Temp: -94 °C

Axial Tilt: 27.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 72,357,723 km

• M1: 659,876 km (0.088 R)

Planet 8 - Gas Giant

Semi-Major Axis: 11.18 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 760.4

Radius: 9.6

Gravity: 8.25 G

Time & Orbit

Eccentricity (e): 0.108

Orbit Range: 9.97 AU - 12.39 AU

Year: 13519 Days

Day: 7.6 Hours

Environment

Temp: -188 °C

Axial Tilt: 4.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 72,357,723 km

• M1: 119,379 km (0.092 R)
• M2: 603,927 km (0.071 R)
• M3: 956,529 km (0.025 R)
• M4: 1,941,032 km (0.051 R)
• M5: 2,606,294 km (0.071 R)
• M6: 3,823,572 km (0.105 R)
• M7: 4,735,670 km (0.101 R)
• M8: 7,918,963 km (0.066 R)
• M9: 10,812,037 km (0.09 R)
• M10: 11,513,052 km (0.109 R)
• M11: 11,935,666 km (0.046 R)
• M12: 19,756,044 km (0.108 R)
• M13: 20,537,992 km (0.117 R)
• M14: 36,919,408 km (0.049 R)
• M15: 37,706,891 km (0.095 R)
• M16: 39,044,446 km (0.108 R)
• M17: 42,813,415 km (0.103 R)
• M18: 50,260,546 km (0.084 R)

Planet 9 - Ice Giant

Semi-Major Axis: 16.12 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 430.1

Radius: 5.8

Gravity: 12.79 G

Time & Orbit

Eccentricity (e): 0.168

Orbit Range: 13.41 AU - 18.83 AU

Year: 23407 Days

Day: 17.1 Hours

Environment

Temp: -185 °C

Axial Tilt: 46.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (28)

Outer Limit: 72,357,723 km

• M1: 72,106 km (0.111 R)
• M2: 262,095 km (0.114 R)
• M3: 713,283 km (0.097 R)
• M4: 951,592 km (0.115 R)
• M5: 2,204,773 km (0.099 R)
• M6: 3,361,015 km (0.119 R)
• M7: 3,976,311 km (0.109 R)
• M8: 4,327,118 km (0.11 R)
• M9: 4,663,863 km (0.077 R)
• M10: 7,154,069 km (0.104 R)
• M11: 8,066,317 km (0.084 R)
• M12: 8,318,838 km (0.105 R)
• M13: 14,249,048 km (0.107 R)
• M14: 15,685,786 km (0.092 R)
• M15: 18,060,951 km (0.107 R)
• M16: 18,756,132 km (0.081 R)
• M17: 29,363,968 km (0.034 R)
• M18: 30,324,236 km (0.097 R)
• M19: 34,375,347 km (0.096 R)
• M20: 34,905,821 km (0.113 R)
• M21: 38,630,060 km (0.036 R)
• M22: 39,928,120 km (0.063 R)
• M23: 41,106,054 km (0.116 R)
• M24: 42,610,859 km (0.109 R)
• M25: 48,001,469 km (0.107 R)
• M26: 50,859,686 km (0.066 R)
• M27: 63,229,634 km (0.093 R)
• M28: 67,898,734 km (0.119 R)

Kuiper Belt

Range: 30.3 - 48.3 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 314 - 17,363 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit