🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.27 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.54 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.07

Radius: 1.75

Gravity: 1.33 G

Time & Orbit

Eccentricity (e): 0.092

Orbit Range: 0.49 AU - 0.59 AU

Year: 168 Days

Day: 27.5 Hours

Environment

Temp: 153 °C

Axial Tilt: 43.9 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Satellites (1)

Outer Limit: 62,725,346 km

• M1: 284,535 km (0.081 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.62 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.46

Radius: 1.82

Gravity: 1.35 G

Time & Orbit

Eccentricity (e): 0.148

Orbit Range: 0.53 AU - 0.71 AU

Year: 207 Days

Day: 33.1 Hours

Environment

Temp: 17 °C

Axial Tilt: 13.9 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Planet 3 - Terrestrial

Semi-Major Axis: 0.96 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.47

Radius: 1.82

Gravity: 1.35 G

Time & Orbit

Eccentricity (e): 0.122

Orbit Range: 0.84 AU - 1.08 AU

Year: 399 Days

Day: 15.4 Hours

Environment

Temp: -49 °C

Axial Tilt: 1.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 62,725,346 km

• M1: 212,279 km (0.097 R)
• M2: 331,060 km (0.082 R)

Planet 4 - Terrestrial

Semi-Major Axis: 1.89 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.61

Radius: 1.84

Gravity: 1.36 G

Time & Orbit

Eccentricity (e): 0.149

Orbit Range: 1.61 AU - 2.17 AU

Year: 1103 Days

Day: 24.6 Hours

Environment

Temp: -110 °C

Axial Tilt: 34.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 5 - Terrestrial

Semi-Major Axis: 1.99 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.4

Radius: 1.42

Gravity: 1.19 G

Time & Orbit

Eccentricity (e): 0.153

Orbit Range: 1.69 AU - 2.29 AU

Year: 1192 Days

Day: 24.4 Hours

Environment

Temp: -117 °C

Axial Tilt: 0.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 62,725,346 km

• M1: 180,565 km (0.111 R)
• M2: 328,816 km (0.032 R)

Planet 6 - Terrestrial

Semi-Major Axis: 2.29 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.4

Radius: 1.63

Gravity: 1.28 G

Time & Orbit

Eccentricity (e): 0.045

Orbit Range: 2.19 AU - 2.39 AU

Year: 1471 Days

Day: 44.8 Hours

Environment

Temp: -113 °C

Axial Tilt: 25.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Asteroid Belt

Center: 6.65 AU

Composition

Type: Far Outer (Icy/Cometary)

A dense region of planetesimals and debris.

Boundary

Planet 7 - Ice Giant

Semi-Major Axis: 11.01 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 282.4

Radius: 4

Gravity: 17.65 G

Time & Orbit

Eccentricity (e): 0.249

Orbit Range: 8.27 AU - 13.75 AU

Year: 15512 Days

Day: 20.3 Hours

Environment

Temp: -191 °C

Axial Tilt: 27.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (32)

Outer Limit: 62,725,346 km

• M1: 51,462 km (0.103 R)
• M2: 186,549 km (0.056 R)
• M3: 342,430 km (0.031 R)
• M4: 693,536 km (0.099 R)
• M5: 1,238,670 km (0.078 R)
• M6: 1,689,110 km (0.081 R)
• M7: 1,861,147 km (0.099 R)
• M8: 2,352,875 km (0.03 R)
• M9: 2,904,293 km (0.092 R)
• M10: 3,638,519 km (0.115 R)
• M11: 4,229,581 km (0.097 R)
• M12: 5,007,639 km (0.099 R)
• M13: 6,310,188 km (0.092 R)
• M14: 7,822,772 km (0.105 R)
• M15: 10,364,589 km (0.103 R)
• M16: 11,430,923 km (0.117 R)
• M17: 12,451,180 km (0.055 R)
• M18: 13,966,906 km (0.115 R)
• M19: 15,601,412 km (0.063 R)
• M20: 18,474,589 km (0.096 R)
• M21: 19,479,288 km (0.055 R)
• M22: 20,847,510 km (0.107 R)
• M23: 21,095,394 km (0.101 R)
• M24: 21,261,747 km (0.088 R)
• M25: 21,766,191 km (0.102 R)
• M26: 22,278,414 km (0.091 R)
• M27: 23,773,645 km (0.09 R)
• M28: 28,658,015 km (0.094 R)
• M29: 33,150,589 km (0.114 R)
• M30: 34,862,437 km (0.095 R)
• M31: 40,992,809 km (0.12 R)
• M32: 42,035,954 km (0.091 R)

Planet 8 - Ice Giant

Semi-Major Axis: 14.98 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 253.3

Radius: 4.2

Gravity: 14.36 G

Time & Orbit

Eccentricity (e): 0.245

Orbit Range: 11.31 AU - 18.65 AU

Year: 24617 Days

Day: 23.3 Hours

Environment

Temp: -207 °C

Axial Tilt: 24.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (30)

Outer Limit: 62,725,346 km

• M1: 54,902 km (0.113 R)
• M2: 600,037 km (0.102 R)
• M3: 886,517 km (0.092 R)
• M4: 1,153,848 km (0.09 R)
• M5: 1,355,656 km (0.115 R)
• M6: 1,612,665 km (0.039 R)
• M7: 2,408,526 km (0.118 R)
• M8: 3,000,784 km (0.089 R)
• M9: 3,885,505 km (0.104 R)
• M10: 5,035,165 km (0.051 R)
• M11: 5,318,503 km (0.1 R)
• M12: 6,313,180 km (0.098 R)
• M13: 7,980,747 km (0.108 R)
• M14: 8,268,424 km (0.1 R)
• M15: 9,069,521 km (0.117 R)
• M16: 9,649,362 km (0.047 R)
• M17: 12,989,583 km (0.05 R)
• M18: 15,279,927 km (0.094 R)
• M19: 16,328,009 km (0.068 R)
• M20: 22,013,027 km (0.114 R)
• M21: 25,039,243 km (0.066 R)
• M22: 25,551,915 km (0.089 R)
• M23: 39,224,562 km (0.106 R)
• M24: 39,500,121 km (0.095 R)
• M25: 42,616,693 km (0.062 R)
• M26: 43,054,118 km (0.068 R)
• M27: 44,833,285 km (0.12 R)
• M28: 49,655,124 km (0.074 R)
• M29: 51,445,810 km (0.089 R)
• M30: 55,155,538 km (0.079 R)

Kuiper Belt

Range: 30 - 48 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 170 - 15,786 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit