🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.4 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.79 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.73

Radius: 0.88

Gravity: 0.94 G

Time & Orbit

Eccentricity (e): 0.225

Orbit Range: 0.61 AU - 0.97 AU

Year: 254 Days

Day: 46.6 Hours

Environment

Temp: 112 °C

Axial Tilt: 34.9 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 0.94 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.83

Radius: 1.88

Gravity: 1.37 G

Time & Orbit

Eccentricity (e): 0.048

Orbit Range: 0.89 AU - 0.99 AU

Year: 330 Days

Day: 22.2 Hours

Environment

Temp: 117 °C

Axial Tilt: 16.4 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Satellites (1)

Outer Limit: 68,296,553 km

• M1: 243,396 km (0.06 R)

Planet 3 - Terrestrial

Semi-Major Axis: 0.96 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.59

Radius: 1.67

Gravity: 1.29 G

Time & Orbit

Eccentricity (e): 0.036

Orbit Range: 0.93 AU - 0.99 AU

Year: 340 Days

Day: 13.4 Hours

Environment

Temp: 65 °C

Axial Tilt: 33.2 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 4 - Terrestrial

Semi-Major Axis: 4.38 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.28

Radius: 0.6

Gravity: 0.78 G

Time & Orbit

Eccentricity (e): 0.139

Orbit Range: 3.77 AU - 4.99 AU

Year: 3315 Days

Day: 47.9 Hours

Environment

Temp: -128 °C

Axial Tilt: 10.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 5 - Terrestrial

Semi-Major Axis: 4.52 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.87

Radius: 0.95

Gravity: 0.96 G

Time & Orbit

Eccentricity (e): 0.106

Orbit Range: 4.04 AU - 5 AU

Year: 3475 Days

Day: 42.6 Hours

Environment

Temp: -120 °C

Axial Tilt: 48.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 68,296,553 km

• M1: 832,662 km (0.099 R)

Asteroid Belt

Center: 4.96 AU

Composition

Type: Main (Rocky/Icy Mix)

A dense region of planetesimals and debris.

Boundary

Planet 6 - Gas Giant

Semi-Major Axis: 5.39 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 303.1

Radius: 8.2

Gravity: 4.51 G

Time & Orbit

Eccentricity (e): 0.153

Orbit Range: 4.57 AU - 6.21 AU

Year: 4526 Days

Day: 6 Hours

Environment

Temp: -144 °C

Axial Tilt: 23 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 68,296,553 km

• M1: 102,175 km (0.087 R)
• M2: 436,826 km (0.111 R)
• M3: 810,671 km (0.119 R)
• M4: 1,068,727 km (0.073 R)
• M5: 1,412,653 km (0.111 R)
• M6: 1,952,252 km (0.1 R)
• M7: 2,516,535 km (0.112 R)
• M8: 3,647,645 km (0.086 R)
• M9: 4,730,434 km (0.074 R)
• M10: 5,062,093 km (0.066 R)
• M11: 5,460,023 km (0.112 R)
• M12: 5,905,526 km (0.077 R)
• M13: 8,000,494 km (0.103 R)
• M14: 8,962,408 km (0.108 R)
• M15: 10,270,791 km (0.11 R)
• M16: 13,589,321 km (0.04 R)
• M17: 16,679,265 km (0.11 R)
• M18: 18,242,862 km (0.101 R)
• M19: 18,707,064 km (0.073 R)

Planet 7 - Gas Giant

Semi-Major Axis: 8.38 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 192.7

Radius: 9.1

Gravity: 2.33 G

Time & Orbit

Eccentricity (e): 0.082

Orbit Range: 7.69 AU - 9.07 AU

Year: 8773 Days

Day: 5.3 Hours

Environment

Temp: -171 °C

Axial Tilt: 16.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 68,296,553 km

• M1: 113,246 km (0.069 R)
• M2: 529,576 km (0.113 R)
• M3: 1,406,669 km (0.085 R)
• M4: 1,893,610 km (0.05 R)
• M5: 2,555,431 km (0.08 R)
• M6: 3,244,329 km (0.115 R)
• M7: 4,285,530 km (0.095 R)
• M8: 7,079,121 km (0.111 R)
• M9: 13,304,038 km (0.12 R)
• M10: 17,782,250 km (0.11 R)
• M11: 20,735,910 km (0.078 R)
• M12: 21,223,151 km (0.113 R)
• M13: 22,437,885 km (0.072 R)
• M14: 27,014,383 km (0.091 R)

Planet 8 - Gas Giant

Semi-Major Axis: 9.64 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 87.2

Radius: 11.6

Gravity: 0.65 G

Time & Orbit

Eccentricity (e): 0.002

Orbit Range: 9.62 AU - 9.66 AU

Year: 10824 Days

Day: 10.4 Hours

Environment

Temp: -163 °C

Axial Tilt: 16.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 68,296,553 km

• M1: 145,559 km (0.043 R)
• M2: 681,418 km (0.048 R)
• M3: 1,294,321 km (0.112 R)
• M4: 1,963,921 km (0.094 R)
• M5: 2,853,131 km (0.067 R)
• M6: 3,284,870 km (0.116 R)
• M7: 3,822,674 km (0.087 R)
• M8: 14,544,503 km (0.067 R)
• M9: 21,004,289 km (0.106 R)

Planet 9 - Ice Giant

Semi-Major Axis: 14.48 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 499

Radius: 4.5

Gravity: 24.64 G

Time & Orbit

Eccentricity (e): 0.128

Orbit Range: 12.63 AU - 16.33 AU

Year: 19927 Days

Day: 15.7 Hours

Environment

Temp: -185 °C

Axial Tilt: 38.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (40)

Outer Limit: 68,296,553 km

• M1: 55,950 km (0.106 R)
• M2: 434,432 km (0.055 R)
• M3: 706,102 km (0.083 R)
• M4: 908,059 km (0.109 R)
• M5: 1,325,886 km (0.094 R)
• M6: 1,720,226 km (0.088 R)
• M7: 1,916,947 km (0.09 R)
• M8: 2,069,238 km (0.077 R)
• M9: 2,530,747 km (0.043 R)
• M10: 3,160,853 km (0.108 R)
• M11: 3,597,380 km (0.067 R)
• M12: 4,041,985 km (0.102 R)
• M13: 4,968,744 km (0.101 R)
• M14: 6,872,975 km (0.106 R)
• M15: 7,231,711 km (0.075 R)
• M16: 8,282,636 km (0.115 R)
• M17: 9,486,001 km (0.117 R)
• M18: 11,224,777 km (0.081 R)
• M19: 14,430,510 km (0.076 R)
• M20: 16,796,400 km (0.101 R)
• M21: 20,124,055 km (0.11 R)
• M22: 20,396,922 km (0.072 R)
• M23: 23,563,011 km (0.11 R)
• M24: 27,821,015 km (0.034 R)
• M25: 29,191,780 km (0.114 R)
• M26: 31,575,623 km (0.11 R)
• M27: 33,446,344 km (0.052 R)
• M28: 36,053,835 km (0.047 R)
• M29: 36,861,813 km (0.089 R)
• M30: 39,075,113 km (0.101 R)
• M31: 49,637,770 km (0.116 R)
• M32: 49,969,429 km (0.088 R)
• M33: 50,637,084 km (0.113 R)
• M34: 51,990,346 km (0.111 R)
• M35: 53,541,377 km (0.07 R)
• M36: 56,194,495 km (0.079 R)
• M37: 57,098,066 km (0.102 R)
• M38: 58,563,677 km (0.108 R)
• M39: 67,480,907 km (0.058 R)
• M40: 67,887,963 km (0.089 R)

Kuiper Belt

Range: 30.3 - 56.3 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 507 - 13,935 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit