🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.58 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 1.16 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.66

Radius: 0.85

Gravity: 0.91 G

Time & Orbit

Eccentricity (e): 0.148

Orbit Range: 0.99 AU - 1.33 AU

Year: 437 Days

Day: 42.6 Hours

Environment

Temp: 20 °C

Axial Tilt: 20.4 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Satellites (2)

Outer Limit: 74,216,926 km

• M1: 149,299 km (0.113 R)
• M2: 350,209 km (0.084 R)

Planet 2 - Terrestrial

Semi-Major Axis: 1.26 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.11

Radius: 1.76

Gravity: 1.33 G

Time & Orbit

Eccentricity (e): 0.21

Orbit Range: 1 AU - 1.52 AU

Year: 495 Days

Day: 17.9 Hours

Environment

Temp: 34 °C

Axial Tilt: 14.9 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Planet 3 - Terrestrial

Semi-Major Axis: 3.24 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.29

Radius: 0.61

Gravity: 0.78 G

Time & Orbit

Eccentricity (e): 0.014

Orbit Range: 3.19 AU - 3.29 AU

Year: 2040 Days

Day: 36.9 Hours

Environment

Temp: -106 °C

Axial Tilt: 8.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 4 - Gas Giant

Semi-Major Axis: 5.94 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 751.9

Radius: 11.8

Gravity: 5.4 G

Time & Orbit

Eccentricity (e): 0.206

Orbit Range: 4.72 AU - 7.16 AU

Year: 5065 Days

Day: 7.1 Hours

Environment

Temp: -145 °C

Axial Tilt: 36.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 74,216,926 km

• M1: 147,504 km (0.095 R)
• M2: 612,304 km (0.038 R)
• M3: 1,133,503 km (0.068 R)
• M4: 1,617,901 km (0.116 R)
• M5: 3,290,704 km (0.055 R)
• M6: 3,939,361 km (0.045 R)
• M7: 4,393,091 km (0.087 R)
• M8: 5,937,689 km (0.1 R)
• M9: 7,491,562 km (0.112 R)
• M10: 9,136,690 km (0.104 R)
• M11: 12,766,832 km (0.062 R)
• M12: 13,873,557 km (0.119 R)
• M13: 14,311,579 km (0.112 R)
• M14: 16,519,943 km (0.11 R)
• M15: 17,769,235 km (0.115 R)
• M16: 18,813,279 km (0.116 R)
• M17: 22,489,646 km (0.078 R)
• M18: 23,555,830 km (0.071 R)
• M19: 24,337,928 km (0.056 R)
• M20: 25,871,157 km (0.102 R)
• M21: 27,211,703 km (0.031 R)

Planet 5 - Gas Giant

Semi-Major Axis: 6.69 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 750.4

Radius: 12.8

Gravity: 4.58 G

Time & Orbit

Eccentricity (e): 0.196

Orbit Range: 5.38 AU - 8 AU

Year: 6054 Days

Day: 6.3 Hours

Environment

Temp: -143 °C

Axial Tilt: 18.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 74,216,926 km

• M1: 172,337 km (0.101 R)
• M2: 814,261 km (0.106 R)
• M3: 1,334,413 km (0.061 R)
• M4: 1,774,231 km (0.073 R)
• M5: 2,361,702 km (0.069 R)
• M6: 3,157,712 km (0.091 R)
• M7: 4,224,943 km (0.09 R)
• M8: 5,051,770 km (0.07 R)
• M9: 5,549,483 km (0.117 R)
• M10: 6,047,644 km (0.101 R)
• M11: 6,541,765 km (0.077 R)
• M12: 7,877,225 km (0.047 R)
• M13: 9,386,818 km (0.106 R)
• M14: 12,757,856 km (0.059 R)
• M15: 14,890,972 km (0.047 R)
• M16: 15,856,776 km (0.077 R)
• M17: 16,418,067 km (0.102 R)
• M18: 17,187,150 km (0.112 R)
• M19: 17,980,018 km (0.062 R)
• M20: 21,473,129 km (0.103 R)
• M21: 27,480,381 km (0.113 R)
• M22: 32,285,913 km (0.116 R)
• M23: 33,188,587 km (0.065 R)

Planet 6 - Ice Giant

Semi-Major Axis: 14.02 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 154.6

Radius: 6.6

Gravity: 3.55 G

Time & Orbit

Eccentricity (e): 0.25

Orbit Range: 10.52 AU - 17.53 AU

Year: 18365 Days

Day: 17.7 Hours

Environment

Temp: -193 °C

Axial Tilt: 9.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 74,216,926 km

• M1: 82,428 km (0.105 R)
• M2: 586,274 km (0.055 R)
• M3: 970,890 km (0.118 R)
• M4: 1,249,741 km (0.101 R)
• M5: 1,971,102 km (0.08 R)
• M6: 3,318,530 km (0.112 R)
• M7: 9,191,443 km (0.069 R)
• M8: 9,755,726 km (0.117 R)
• M9: 11,858,773 km (0.11 R)
• M10: 22,114,604 km (0.112 R)
• M11: 26,252,182 km (0.116 R)
• M12: 29,649,101 km (0.088 R)
• M13: 31,505,162 km (0.108 R)
• M14: 37,064,668 km (0.105 R)
• M15: 39,828,189 km (0.1 R)

Planet 7 - Ice Giant

Semi-Major Axis: 16.77 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 440.5

Radius: 6.1

Gravity: 11.84 G

Time & Orbit

Eccentricity (e): 0.103

Orbit Range: 15.04 AU - 18.5 AU

Year: 24026 Days

Day: 19.1 Hours

Environment

Temp: -183 °C

Axial Tilt: 25 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 74,216,926 km

• M1: 75,846 km (0.029 R)
• M2: 297,251 km (0.083 R)
• M3: 812,765 km (0.113 R)
• M4: 1,262,307 km (0.118 R)
• M5: 1,979,180 km (0.113 R)
• M6: 3,985,586 km (0.046 R)
• M7: 4,610,606 km (0.116 R)
• M8: 7,105,899 km (0.115 R)
• M9: 7,921,806 km (0.086 R)
• M10: 10,804,257 km (0.09 R)
• M11: 11,051,393 km (0.115 R)
• M12: 14,170,808 km (0.107 R)
• M13: 18,176,740 km (0.088 R)
• M14: 25,288,922 km (0.103 R)
• M15: 40,805,512 km (0.036 R)
• M16: 46,091,553 km (0.045 R)
• M17: 50,085,966 km (0.08 R)
• M18: 54,666,951 km (0.067 R)
• M19: 56,130,767 km (0.1 R)
• M20: 58,945,600 km (0.093 R)
• M21: 61,068,544 km (0.032 R)
• M22: 64,448,857 km (0.076 R)

Kuiper Belt

Range: 31.4 - 52.4 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 295 - 11,661 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit