🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.35 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.69 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.57

Radius: 1.84

Gravity: 1.35 G

Time & Orbit

Eccentricity (e): 0.144

Orbit Range: 0.59 AU - 0.79 AU

Year: 201 Days

Day: 37.3 Hours

Environment

Temp: 209 °C

Axial Tilt: 8.6 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 0.9 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.8

Radius: 1.27

Gravity: 1.12 G

Time & Orbit

Eccentricity (e): 0.205

Orbit Range: 0.72 AU - 1.08 AU

Year: 300 Days

Day: 14.5 Hours

Environment

Temp: 103 °C

Axial Tilt: 12.6 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 3 - Terrestrial

Semi-Major Axis: 1.11 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.33

Radius: 1.8

Gravity: 1.34 G

Time & Orbit

Eccentricity (e): 0.174

Orbit Range: 0.92 AU - 1.3 AU

Year: 411 Days

Day: 41.7 Hours

Environment

Temp: 43 °C

Axial Tilt: 13.9 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Satellites (1)

Outer Limit: 111,629,815 km

• M1: 42,037 km (0.104 R)

Planet 4 - Terrestrial

Semi-Major Axis: 1.44 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.71

Radius: 1.86

Gravity: 1.36 G

Time & Orbit

Eccentricity (e): 0.211

Orbit Range: 1.14 AU - 1.74 AU

Year: 607 Days

Day: 42.2 Hours

Environment

Temp: -4 °C

Axial Tilt: 34.6 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Planet 5 - Terrestrial

Semi-Major Axis: 3.11 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.97

Radius: 0.99

Gravity: 0.99 G

Time & Orbit

Eccentricity (e): 0.072

Orbit Range: 2.89 AU - 3.33 AU

Year: 1928 Days

Day: 12.7 Hours

Environment

Temp: -105 °C

Axial Tilt: 37.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 6 - Terrestrial

Semi-Major Axis: 3.21 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.44

Radius: 1.82

Gravity: 1.34 G

Time & Orbit

Eccentricity (e): 0.055

Orbit Range: 3.03 AU - 3.39 AU

Year: 2021 Days

Day: 27.7 Hours

Environment

Temp: -106 °C

Axial Tilt: 36.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Asteroid Belt

Center: 10.53 AU

Composition

Type: Far Outer (Icy/Cometary)

A dense region of planetesimals and debris.

Boundary

Planet 7 - Ice Giant

Semi-Major Axis: 17.85 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 112.9

Radius: 3.9

Gravity: 7.42 G

Time & Orbit

Eccentricity (e): 0.08

Orbit Range: 16.42 AU - 19.28 AU

Year: 26505 Days

Day: 23.2 Hours

Environment

Temp: -190 °C

Axial Tilt: 18.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (31)

Outer Limit: 111,629,815 km

• M1: 48,470 km (0.068 R)
• M2: 541,245 km (0.12 R)
• M3: 701,165 km (0.078 R)
• M4: 942,616 km (0.056 R)
• M5: 1,665,473 km (0.089 R)
• M6: 3,194,812 km (0.035 R)
• M7: 3,413,823 km (0.112 R)
• M8: 5,202,864 km (0.028 R)
• M9: 8,099,378 km (0.08 R)
• M10: 8,926,804 km (0.082 R)
• M11: 9,263,250 km (0.088 R)
• M12: 9,459,373 km (0.119 R)
• M13: 9,809,132 km (0.119 R)
• M14: 10,375,959 km (0.103 R)
• M15: 10,748,009 km (0.099 R)
• M16: 11,239,138 km (0.11 R)
• M17: 12,207,635 km (0.088 R)
• M18: 12,682,159 km (0.114 R)
• M19: 13,921,877 km (0.055 R)
• M20: 15,859,768 km (0.077 R)
• M21: 16,424,350 km (0.088 R)
• M22: 17,518,958 km (0.099 R)
• M23: 19,052,934 km (0.068 R)
• M24: 19,690,820 km (0.048 R)
• M25: 19,933,617 km (0.084 R)
• M26: 27,875,618 km (0.08 R)
• M27: 30,280,554 km (0.061 R)
• M28: 30,603,984 km (0.106 R)
• M29: 30,821,051 km (0.108 R)
• M30: 31,588,488 km (0.053 R)
• M31: 38,950,199 km (0.05 R)

Planet 8 - Ice Giant

Semi-Major Axis: 19.23 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 985

Radius: 5.3

Gravity: 35.07 G

Time & Orbit

Eccentricity (e): 0.156

Orbit Range: 16.23 AU - 22.23 AU

Year: 29638 Days

Day: 21.9 Hours

Environment

Temp: -194 °C

Axial Tilt: 49 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (28)

Outer Limit: 111,629,815 km

• M1: 218,562 km (0.097 R)
• M2: 442,511 km (0.095 R)
• M3: 1,569,880 km (0.071 R)
• M4: 5,184,763 km (0.118 R)
• M5: 5,717,032 km (0.075 R)
• M6: 16,301,979 km (0.088 R)
• M7: 16,864,018 km (0.101 R)
• M8: 19,241,428 km (0.061 R)
• M9: 22,978,831 km (0.052 R)
• M10: 25,388,853 km (0.088 R)
• M11: 29,586,719 km (0.077 R)
• M12: 35,611,474 km (0.119 R)
• M13: 44,908,682 km (0.105 R)
• M14: 46,756,366 km (0.064 R)
• M15: 49,427,436 km (0.109 R)
• M16: 50,208,935 km (0.061 R)
• M17: 50,405,507 km (0.115 R)
• M18: 50,800,295 km (0.118 R)
• M19: 59,355,498 km (0.043 R)
• M20: 62,029,859 km (0.106 R)
• M21: 62,483,291 km (0.082 R)
• M22: 66,663,654 km (0.108 R)
• M23: 70,779,540 km (0.115 R)
• M24: 80,585,381 km (0.055 R)
• M25: 82,211,959 km (0.064 R)
• M26: 84,414,638 km (0.104 R)
• M27: 86,656,362 km (0.119 R)
• M28: 106,684,375 km (0.107 R)

Kuiper Belt

Range: 31.2 - 49.2 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 226 - 13,810 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit