🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.27 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.54 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.76

Radius: 1.7

Gravity: 1.3 G

Time & Orbit

Eccentricity (e): 0.091

Orbit Range: 0.49 AU - 0.59 AU

Year: 260 Days

Day: 46.7 Hours

Environment

Temp: -126 °C

Axial Tilt: 8.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.62 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.49

Radius: 1.65

Gravity: 1.28 G

Time & Orbit

Eccentricity (e): 0.095

Orbit Range: 0.56 AU - 0.68 AU

Year: 320 Days

Day: 42.6 Hours

Environment

Temp: -120 °C

Axial Tilt: 32.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 57,503,354 km

• M1: 61,934 km (0.036 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.68 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 866.2

Radius: 14

Gravity: 4.42 G

Time & Orbit

Eccentricity (e): 0.013

Orbit Range: 0.67 AU - 0.69 AU

Year: 368 Days

Day: 5.2 Hours

Environment

Temp: -129 °C

Axial Tilt: 7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 57,503,354 km

• M1: 174,282 km (0.1 R)
• M2: 616,044 km (0.083 R)
• M3: 1,064,090 km (0.049 R)
• M4: 1,564,195 km (0.103 R)
• M5: 2,040,216 km (0.093 R)
• M6: 2,595,224 km (0.086 R)
• M7: 3,052,395 km (0.084 R)
• M8: 3,872,790 km (0.036 R)
• M9: 4,349,408 km (0.073 R)
• M10: 4,985,499 km (0.087 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.75 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 864.2

Radius: 12.5

Gravity: 5.53 G

Time & Orbit

Eccentricity (e): 0.024

Orbit Range: 0.73 AU - 0.77 AU

Year: 426 Days

Day: 6 Hours

Environment

Temp: -152 °C

Axial Tilt: 39.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 57,503,354 km

• M1: 155,432 km (0.077 R)
• M2: 546,930 km (0.117 R)
• M3: 1,002,156 km (0.047 R)
• M4: 1,414,747 km (0.042 R)
• M5: 2,110,377 km (0.074 R)
• M6: 2,776,387 km (0.064 R)
• M7: 3,217,102 km (0.061 R)
• M8: 3,628,646 km (0.105 R)
• M9: 4,312,607 km (0.09 R)
• M10: 5,080,792 km (0.114 R)
• M11: 5,780,163 km (0.103 R)
• M12: 6,226,413 km (0.076 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.78 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 698.7

Radius: 12

Gravity: 4.85 G

Time & Orbit

Eccentricity (e): 0.139

Orbit Range: 1.53 AU - 2.03 AU

Year: 1558 Days

Day: 9 Hours

Environment

Temp: -194 °C

Axial Tilt: 5.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 57,503,354 km

• M1: 149,299 km (0.096 R)
• M2: 610,659 km (0.045 R)
• M3: 1,000,959 km (0.059 R)
• M4: 1,391,859 km (0.114 R)
• M5: 1,897,649 km (0.091 R)
• M6: 2,325,499 km (0.041 R)
• M7: 3,016,641 km (0.078 R)
• M8: 3,979,902 km (0.107 R)
• M9: 4,788,927 km (0.116 R)
• M10: 5,329,275 km (0.09 R)
• M11: 6,783,815 km (0.118 R)
• M12: 7,172,470 km (0.087 R)
• M13: 8,399,472 km (0.095 R)
• M14: 9,535,518 km (0.083 R)
• M15: 10,598,411 km (0.107 R)
• M16: 11,230,163 km (0.119 R)
• M17: 12,073,745 km (0.094 R)
• M18: 12,880,377 km (0.032 R)
• M19: 13,317,053 km (0.108 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.37 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 582.6

Radius: 11.6

Gravity: 4.33 G

Time & Orbit

Eccentricity (e): 0.156

Orbit Range: 2 AU - 2.74 AU

Year: 2393 Days

Day: 14.3 Hours

Environment

Temp: -199 °C

Axial Tilt: 25.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 57,503,354 km

• M1: 144,212 km (0.062 R)
• M2: 617,690 km (0.116 R)
• M3: 1,074,562 km (0.092 R)
• M4: 1,563,597 km (0.114 R)
• M5: 3,193,466 km (0.068 R)
• M6: 4,302,435 km (0.083 R)
• M7: 7,796,293 km (0.101 R)
• M8: 8,934,434 km (0.119 R)
• M9: 9,337,450 km (0.066 R)
• M10: 9,929,259 km (0.099 R)
• M11: 11,303,914 km (0.049 R)
• M12: 13,841,693 km (0.034 R)
• M13: 17,455,080 km (0.114 R)

Planet 7 - Gas Giant

Semi-Major Axis: 5.19 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 485.9

Radius: 11.8

Gravity: 3.49 G

Time & Orbit

Eccentricity (e): 0.153

Orbit Range: 4.4 AU - 5.98 AU

Year: 7756 Days

Day: 8.8 Hours

Environment

Temp: -211 °C

Axial Tilt: 28.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 57,503,354 km

• M1: 146,756 km (0.08 R)
• M2: 631,303 km (0.084 R)
• M3: 1,146,518 km (0.117 R)
• M4: 1,823,598 km (0.109 R)
• M5: 2,944,984 km (0.073 R)
• M6: 3,667,990 km (0.111 R)
• M7: 4,505,888 km (0.116 R)
• M8: 7,050,996 km (0.098 R)
• M9: 8,795,607 km (0.028 R)
• M10: 9,656,991 km (0.103 R)
• M11: 10,062,701 km (0.084 R)
• M12: 13,561,645 km (0.053 R)
• M13: 15,923,945 km (0.066 R)
• M14: 20,549,063 km (0.074 R)
• M15: 28,684,644 km (0.099 R)

Planet 8 - Ice Giant

Semi-Major Axis: 8.58 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 435.1

Radius: 5.2

Gravity: 16.09 G

Time & Orbit

Eccentricity (e): 0.138

Orbit Range: 7.4 AU - 9.76 AU

Year: 16487 Days

Day: 23.2 Hours

Environment

Temp: -220 °C

Axial Tilt: 5.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 57,503,354 km

• M1: 73,153 km (0.038 R)
• M2: 286,929 km (0.051 R)
• M3: 458,667 km (0.077 R)
• M4: 1,028,336 km (0.047 R)
• M5: 1,436,738 km (0.039 R)
• M6: 4,229,581 km (0.037 R)
• M7: 5,619,195 km (0.066 R)
• M8: 6,863,700 km (0.116 R)
• M9: 10,870,679 km (0.06 R)
• M10: 12,784,185 km (0.092 R)
• M11: 14,155,250 km (0.114 R)
• M12: 19,681,844 km (0.115 R)
• M13: 25,478,462 km (0.058 R)
• M14: 30,816,563 km (0.115 R)
• M15: 32,200,194 km (0.099 R)
• M16: 32,788,861 km (0.1 R)
• M17: 33,504,538 km (0.077 R)
• M18: 37,498,352 km (0.084 R)
• M19: 40,693,762 km (0.077 R)
• M20: 40,967,975 km (0.116 R)
• M21: 45,083,861 km (0.082 R)
• M22: 52,649,774 km (0.077 R)
• M23: 55,966,359 km (0.075 R)

Kuiper Belt

Range: 30 - 56 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 268 - 19,298 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit