🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.3 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.59 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.52

Radius: 1.65

Gravity: 1.29 G

Time & Orbit

Eccentricity (e): 0.239

Orbit Range: 0.45 AU - 0.73 AU

Year: 159 Days

Day: 19.5 Hours

Environment

Temp: 243 °C

Axial Tilt: 32.5 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 1.79 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.69

Radius: 1.86

Gravity: 1.36 G

Time & Orbit

Eccentricity (e): 0.032

Orbit Range: 1.73 AU - 1.85 AU

Year: 842 Days

Day: 45.4 Hours

Environment

Temp: -47 °C

Axial Tilt: 39.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Terrestrial

Semi-Major Axis: 1.97 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.15

Radius: 1.58

Gravity: 1.26 G

Time & Orbit

Eccentricity (e): 0.188

Orbit Range: 1.6 AU - 2.34 AU

Year: 972 Days

Day: 27.6 Hours

Environment

Temp: -55 °C

Axial Tilt: 39.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 4 - Terrestrial

Semi-Major Axis: 2.56 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.82

Radius: 1.71

Gravity: 1.31 G

Time & Orbit

Eccentricity (e): 0.028

Orbit Range: 2.49 AU - 2.63 AU

Year: 1440 Days

Day: 14.6 Hours

Environment

Temp: -87 °C

Axial Tilt: 16.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 91,074,451 km

• M1: 247,584 km (0.066 R)
• M2: 2,070,285 km (0.11 R)

Planet 5 - Terrestrial

Semi-Major Axis: 2.83 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.33

Radius: 0.64

Gravity: 0.81 G

Time & Orbit

Eccentricity (e): 0.121

Orbit Range: 2.49 AU - 3.17 AU

Year: 1673 Days

Day: 29.1 Hours

Environment

Temp: -87 °C

Axial Tilt: 35 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 91,074,451 km

• M1: 27,376 km (0.054 R)

Planet 6 - Terrestrial

Semi-Major Axis: 4.39 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.1

Radius: 1.57

Gravity: 1.26 G

Time & Orbit

Eccentricity (e): 0.149

Orbit Range: 3.74 AU - 5.04 AU

Year: 3233 Days

Day: 24.6 Hours

Environment

Temp: -123 °C

Axial Tilt: 35.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Asteroid Belt

Center: 6.58 AU

Composition

Type: Main (Rocky/Icy Mix)

A dense region of planetesimals and debris.

Boundary

Planet 7 - Gas Giant

Semi-Major Axis: 8.76 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 243.7

Radius: 13.8

Gravity: 1.28 G

Time & Orbit

Eccentricity (e): 0.228

Orbit Range: 6.76 AU - 10.76 AU

Year: 9112 Days

Day: 8.9 Hours

Environment

Temp: -169 °C

Axial Tilt: 19.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 91,074,451 km

• M1: 180,714 km (0.101 R)
• M2: 789,727 km (0.075 R)
• M3: 1,846,038 km (0.109 R)
• M4: 3,084,409 km (0.119 R)
• M5: 5,227,099 km (0.079 R)
• M6: 8,534,259 km (0.08 R)
• M7: 10,023,955 km (0.12 R)
• M8: 11,875,378 km (0.099 R)
• M9: 12,372,043 km (0.088 R)
• M10: 12,934,232 km (0.11 R)
• M11: 17,297,104 km (0.034 R)
• M12: 18,856,961 km (0.119 R)
• M13: 25,547,128 km (0.106 R)
• M14: 31,167,669 km (0.043 R)
• M15: 31,923,587 km (0.106 R)

Planet 8 - Ice Giant

Semi-Major Axis: 16.02 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 925.2

Radius: 5.4

Gravity: 31.73 G

Time & Orbit

Eccentricity (e): 0.231

Orbit Range: 12.32 AU - 19.72 AU

Year: 22536 Days

Day: 19.5 Hours

Environment

Temp: -199 °C

Axial Tilt: 34.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (37)

Outer Limit: 91,074,451 km

• M1: 67,469 km (0.11 R)
• M2: 338,839 km (0.114 R)
• M3: 851,212 km (0.111 R)
• M4: 1,438,533 km (0.098 R)
• M5: 2,598,814 km (0.098 R)
• M6: 2,938,850 km (0.047 R)
• M7: 3,337,678 km (0.103 R)
• M8: 3,902,560 km (0.108 R)
• M9: 4,138,775 km (0.071 R)
• M10: 4,752,126 km (0.106 R)
• M11: 5,382,980 km (0.112 R)
• M12: 5,804,697 km (0.082 R)
• M13: 6,202,777 km (0.106 R)
• M14: 6,571,685 km (0.097 R)
• M15: 10,578,664 km (0.063 R)
• M16: 13,463,210 km (0.111 R)
• M17: 14,880,500 km (0.118 R)
• M18: 16,221,346 km (0.066 R)
• M19: 17,640,731 km (0.098 R)
• M20: 19,626,642 km (0.098 R)
• M21: 22,715,090 km (0.045 R)
• M22: 26,830,528 km (0.112 R)
• M23: 27,438,793 km (0.102 R)
• M24: 27,808,150 km (0.026 R)
• M25: 28,305,712 km (0.12 R)
• M26: 32,639,712 km (0.12 R)
• M27: 51,355,154 km (0.077 R)
• M28: 51,728,700 km (0.056 R)
• M29: 60,202,671 km (0.091 R)
• M30: 65,530,749 km (0.091 R)
• M31: 66,190,625 km (0.062 R)
• M32: 69,100,752 km (0.113 R)
• M33: 69,328,141 km (0.076 R)
• M34: 77,602,699 km (0.091 R)
• M35: 82,614,377 km (0.082 R)
• M36: 83,384,208 km (0.119 R)
• M37: 83,641,965 km (0.119 R)

Kuiper Belt

Range: 31.2 - 55.2 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 254 - 15,281 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit