🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.52 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 1.03 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.59

Radius: 1.84

Gravity: 1.36 G

Time & Orbit

Eccentricity (e): 0.179

Orbit Range: 0.85 AU - 1.21 AU

Year: 388 Days

Day: 36.6 Hours

Environment

Temp: 29 °C

Axial Tilt: 46.1 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Satellites (2)

Outer Limit: 78,630,914 km

• M1: 43,683 km (0.077 R)
• M2: 171,439 km (0.092 R)

Planet 2 - Terrestrial

Semi-Major Axis: 1.29 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.48

Radius: 1.44

Gravity: 1.2 G

Time & Orbit

Eccentricity (e): 0.19

Orbit Range: 1.04 AU - 1.54 AU

Year: 543 Days

Day: 16.1 Hours

Environment

Temp: 4 °C

Axial Tilt: 39.5 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Planet 3 - Terrestrial

Semi-Major Axis: 1.68 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.66

Radius: 1.68

Gravity: 1.3 G

Time & Orbit

Eccentricity (e): 0.133

Orbit Range: 1.46 AU - 1.9 AU

Year: 808 Days

Day: 26.3 Hours

Environment

Temp: -56 °C

Axial Tilt: 10.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 78,630,914 km

• M1: 263,891 km (0.097 R)
• M2: 637,885 km (0.089 R)

Planet 4 - Terrestrial

Semi-Major Axis: 1.73 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.55

Radius: 1.45

Gravity: 1.21 G

Time & Orbit

Eccentricity (e): 0.09

Orbit Range: 1.57 AU - 1.89 AU

Year: 844 Days

Day: 39.8 Hours

Environment

Temp: -55 °C

Axial Tilt: 15.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 5 - Terrestrial

Semi-Major Axis: 2.03 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.16

Radius: 1.77

Gravity: 1.33 G

Time & Orbit

Eccentricity (e): 0.204

Orbit Range: 1.62 AU - 2.44 AU

Year: 1073 Days

Day: 38.5 Hours

Environment

Temp: -77 °C

Axial Tilt: 2.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 6 - Gas Giant

Semi-Major Axis: 8.81 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 43

Radius: 13.8

Gravity: 0.23 G

Time & Orbit

Eccentricity (e): 0.209

Orbit Range: 6.97 AU - 10.65 AU

Year: 9698 Days

Day: 9.6 Hours

Environment

Temp: -180 °C

Axial Tilt: 34.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 78,630,914 km

• M1: 171,589 km (0.072 R)
• M2: 696,228 km (0.037 R)
• M3: 2,204,025 km (0.09 R)
• M4: 2,862,854 km (0.059 R)
• M5: 4,327,866 km (0.099 R)
• M6: 4,951,390 km (0.107 R)
• M7: 6,706,772 km (0.119 R)
• M8: 8,713,029 km (0.095 R)
• M9: 9,220,016 km (0.12 R)
• M10: 13,252,127 km (0.085 R)
• M11: 16,379,620 km (0.095 R)
• M12: 17,258,807 km (0.091 R)
• M13: 17,898,188 km (0.1 R)

Planet 7 - Gas Giant

Semi-Major Axis: 9.14 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 319.4

Radius: 12.6

Gravity: 2.01 G

Time & Orbit

Eccentricity (e): 0.213

Orbit Range: 7.19 AU - 11.09 AU

Year: 10248 Days

Day: 13.3 Hours

Environment

Temp: -172 °C

Axial Tilt: 31.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (27)

Outer Limit: 78,630,914 km

• M1: 157,078 km (0.087 R)
• M2: 737,518 km (0.106 R)
• M3: 1,213,688 km (0.08 R)
• M4: 1,648,569 km (0.093 R)
• M5: 2,270,447 km (0.115 R)
• M6: 2,674,660 km (0.057 R)
• M7: 3,654,227 km (0.117 R)
• M8: 4,448,891 km (0.108 R)
• M9: 4,887,961 km (0.093 R)
• M10: 5,663,327 km (0.036 R)
• M11: 7,234,852 km (0.097 R)
• M12: 8,002,289 km (0.083 R)
• M13: 9,036,908 km (0.073 R)
• M14: 9,654,149 km (0.061 R)
• M15: 12,787,028 km (0.065 R)
• M16: 14,024,800 km (0.111 R)
• M17: 19,061,013 km (0.077 R)
• M18: 19,856,574 km (0.111 R)
• M19: 20,448,982 km (0.081 R)
• M20: 23,262,170 km (0.043 R)
• M21: 24,087,352 km (0.054 R)
• M22: 25,017,402 km (0.109 R)
• M23: 25,621,627 km (0.117 R)
• M24: 27,129,574 km (0.097 R)
• M25: 32,618,320 km (0.097 R)
• M26: 33,339,681 km (0.107 R)
• M27: 35,135,753 km (0.119 R)

Planet 8 - Gas Giant

Semi-Major Axis: 10.59 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 290.5

Radius: 12.9

Gravity: 1.75 G

Time & Orbit

Eccentricity (e): 0.173

Orbit Range: 8.76 AU - 12.42 AU

Year: 12781 Days

Day: 5.2 Hours

Environment

Temp: -181 °C

Axial Tilt: 17.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 78,630,914 km

• M1: 160,668 km (0.114 R)
• M2: 1,347,428 km (0.078 R)
• M3: 1,925,773 km (0.081 R)
• M4: 2,534,188 km (0.03 R)
• M5: 4,062,181 km (0.081 R)
• M6: 5,378,642 km (0.118 R)
• M7: 6,887,636 km (0.075 R)
• M8: 7,580,423 km (0.043 R)
• M9: 8,361,623 km (0.114 R)
• M10: 13,039,399 km (0.108 R)
• M11: 13,919,932 km (0.107 R)
• M12: 15,604,255 km (0.053 R)
• M13: 17,772,077 km (0.097 R)
• M14: 18,488,950 km (0.093 R)
• M15: 20,056,886 km (0.094 R)
• M16: 21,230,032 km (0.07 R)
• M17: 22,614,411 km (0.116 R)
• M18: 26,847,432 km (0.097 R)
• M19: 30,756,574 km (0.092 R)
• M20: 34,145,415 km (0.046 R)
• M21: 35,253,486 km (0.065 R)

Planet 9 - Ice Giant

Semi-Major Axis: 18.04 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 374.5

Radius: 5

Gravity: 14.98 G

Time & Orbit

Eccentricity (e): 0.055

Orbit Range: 17.05 AU - 19.03 AU

Year: 28416 Days

Day: 16.5 Hours

Environment

Temp: -209 °C

Axial Tilt: 1.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (35)

Outer Limit: 78,630,914 km

• M1: 62,233 km (0.055 R)
• M2: 251,175 km (0.038 R)
• M3: 535,860 km (0.028 R)
• M4: 700,268 km (0.113 R)
• M5: 864,975 km (0.12 R)
• M6: 1,068,877 km (0.06 R)
• M7: 1,364,931 km (0.113 R)
• M8: 2,565,005 km (0.104 R)
• M9: 2,734,499 km (0.068 R)
• M10: 3,016,043 km (0.083 R)
• M11: 3,518,243 km (0.118 R)
• M12: 3,697,461 km (0.112 R)
• M13: 4,904,417 km (0.109 R)
• M14: 5,242,957 km (0.111 R)
• M15: 8,012,911 km (0.117 R)
• M16: 8,271,565 km (0.091 R)
• M17: 8,697,022 km (0.076 R)
• M18: 10,607,536 km (0.04 R)
• M19: 10,982,578 km (0.082 R)
• M20: 15,631,033 km (0.097 R)
• M21: 18,071,722 km (0.099 R)
• M22: 24,225,730 km (0.098 R)
• M23: 24,875,882 km (0.096 R)
• M24: 26,895,902 km (0.102 R)
• M25: 38,068,769 km (0.075 R)
• M26: 42,282,492 km (0.087 R)
• M27: 45,149,385 km (0.061 R)
• M28: 49,169,679 km (0.103 R)
• M29: 49,688,484 km (0.069 R)
• M30: 50,561,088 km (0.098 R)
• M31: 54,337,986 km (0.059 R)
• M32: 57,721,441 km (0.056 R)
• M33: 73,108,629 km (0.117 R)
• M34: 76,992,489 km (0.101 R)
• M35: 78,395,418 km (0.113 R)

Kuiper Belt

Range: 30 - 55 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 348 - 11,803 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit