🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.26 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.51 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.14

Radius: 1.36

Gravity: 1.16 G

Time & Orbit

Eccentricity (e): 0.153

Orbit Range: 0.43 AU - 0.59 AU

Year: 129 Days

Day: 41.4 Hours

Environment

Temp: 223 °C

Axial Tilt: 33.1 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Satellites (2)

Outer Limit: 72,385,121 km

• M1: 31,715 km (0.056 R)
• M2: 286,480 km (0.12 R)

Planet 2 - Terrestrial

Semi-Major Axis: 1.78 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.59

Radius: 1.84

Gravity: 1.36 G

Time & Orbit

Eccentricity (e): 0.169

Orbit Range: 1.48 AU - 2.08 AU

Year: 839 Days

Day: 36.9 Hours

Environment

Temp: -32 °C

Axial Tilt: 27.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 72,385,121 km

• M1: 50,115 km (0.031 R)

Planet 3 - Terrestrial

Semi-Major Axis: 2.04 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.02

Radius: 1.01

Gravity: 1 G

Time & Orbit

Eccentricity (e): 0.107

Orbit Range: 1.82 AU - 2.26 AU

Year: 1029 Days

Day: 14.9 Hours

Environment

Temp: -55 °C

Axial Tilt: 16.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 4 - Terrestrial

Semi-Major Axis: 2.31 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.67

Radius: 1.48

Gravity: 1.22 G

Time & Orbit

Eccentricity (e): 0.217

Orbit Range: 1.81 AU - 2.81 AU

Year: 1240 Days

Day: 23.7 Hours

Environment

Temp: -63 °C

Axial Tilt: 1.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 5 - Terrestrial

Semi-Major Axis: 3.22 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.41

Radius: 0.7

Gravity: 0.84 G

Time & Orbit

Eccentricity (e): 0.003

Orbit Range: 3.21 AU - 3.23 AU

Year: 2040 Days

Day: 18.8 Hours

Environment

Temp: -93 °C

Axial Tilt: 104.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 72,385,121 km

• M1: 69,264 km (0.086 R)
• M2: 239,057 km (0.068 R)

Planet 6 - Terrestrial

Semi-Major Axis: 4.74 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.74

Radius: 1.5

Gravity: 1.22 G

Time & Orbit

Eccentricity (e): 0.021

Orbit Range: 4.64 AU - 4.84 AU

Year: 3644 Days

Day: 17.5 Hours

Environment

Temp: -136 °C

Axial Tilt: 24.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Asteroid Belt

Center: 9.45 AU

Composition

Type: Far Outer (Icy/Cometary)

A dense region of planetesimals and debris.

Boundary

Planet 7 - Ice Giant

Semi-Major Axis: 14.16 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 597.7

Radius: 7.3

Gravity: 11.22 G

Time & Orbit

Eccentricity (e): 0.032

Orbit Range: 13.71 AU - 14.61 AU

Year: 18815 Days

Day: 18.8 Hours

Environment

Temp: -192 °C

Axial Tilt: 34.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 72,385,121 km

• M1: 119,080 km (0.099 R)
• M2: 718,219 km (0.075 R)
• M3: 1,670,859 km (0.111 R)
• M4: 2,879,460 km (0.111 R)
• M5: 5,518,366 km (0.066 R)
• M6: 11,626,447 km (0.102 R)
• M7: 12,268,372 km (0.102 R)
• M8: 12,798,846 km (0.117 R)
• M9: 14,047,838 km (0.118 R)
• M10: 14,408,818 km (0.096 R)
• M11: 21,341,483 km (0.084 R)
• M12: 23,092,675 km (0.118 R)
• M13: 25,680,569 km (0.119 R)
• M14: 31,302,158 km (0.071 R)
• M15: 32,416,662 km (0.045 R)
• M16: 38,953,042 km (0.105 R)
• M17: 44,899,258 km (0.068 R)
• M18: 48,907,284 km (0.073 R)
• M19: 51,252,829 km (0.097 R)
• M20: 69,597,118 km (0.084 R)

Planet 8 - Ice Giant

Semi-Major Axis: 17.9 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 329.9

Radius: 6

Gravity: 9.16 G

Time & Orbit

Eccentricity (e): 0.23

Orbit Range: 13.78 AU - 22.02 AU

Year: 26741 Days

Day: 18 Hours

Environment

Temp: -188 °C

Axial Tilt: 48.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (35)

Outer Limit: 72,385,121 km

• M1: 75,098 km (0.09 R)
• M2: 333,603 km (0.051 R)
• M3: 610,808 km (0.081 R)
• M4: 931,696 km (0.086 R)
• M5: 1,151,156 km (0.05 R)
• M6: 1,801,906 km (0.108 R)
• M7: 2,673,314 km (0.057 R)
• M8: 3,282,476 km (0.028 R)
• M9: 3,827,162 km (0.068 R)
• M10: 4,042,434 km (0.114 R)
• M11: 4,265,783 km (0.111 R)
• M12: 4,497,361 km (0.116 R)
• M13: 6,620,155 km (0.07 R)
• M14: 7,067,303 km (0.071 R)
• M15: 7,534,347 km (0.114 R)
• M16: 7,972,071 km (0.104 R)
• M17: 10,242,069 km (0.081 R)
• M18: 10,658,250 km (0.094 R)
• M19: 11,651,729 km (0.105 R)
• M20: 23,829,295 km (0.116 R)
• M21: 24,036,488 km (0.09 R)
• M22: 25,846,174 km (0.082 R)
• M23: 27,176,996 km (0.074 R)
• M24: 27,516,733 km (0.103 R)
• M25: 29,139,571 km (0.086 R)
• M26: 30,580,647 km (0.102 R)
• M27: 38,788,783 km (0.098 R)
• M28: 39,508,349 km (0.086 R)
• M29: 40,236,741 km (0.064 R)
• M30: 46,874,997 km (0.11 R)
• M31: 49,352,188 km (0.111 R)
• M32: 56,015,576 km (0.104 R)
• M33: 58,238,152 km (0.097 R)
• M34: 61,098,014 km (0.12 R)
• M35: 68,341,244 km (0.111 R)

Kuiper Belt

Range: 31.1 - 60.1 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 384 - 14,398 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit