🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.36 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.72 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.44

Radius: 0.72

Gravity: 0.85 G

Time & Orbit

Eccentricity (e): 0.029

Orbit Range: 0.7 AU - 0.74 AU

Year: 225 Days

Day: 15.6 Hours

Environment

Temp: 184 °C

Axial Tilt: 17.1 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 1.16 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.56

Radius: 1.83

Gravity: 1.36 G

Time & Orbit

Eccentricity (e): 0.189

Orbit Range: 0.94 AU - 1.38 AU

Year: 461 Days

Day: 12.7 Hours

Environment

Temp: 20 °C

Axial Tilt: 27.3 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Planet 3 - Terrestrial

Semi-Major Axis: 1.4 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.89

Radius: 1.72

Gravity: 1.31 G

Time & Orbit

Eccentricity (e): 0.176

Orbit Range: 1.15 AU - 1.65 AU

Year: 611 Days

Day: 24.8 Hours

Environment

Temp: -24 °C

Axial Tilt: 6.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 4 - Terrestrial

Semi-Major Axis: 4.56 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.91

Radius: 0.96

Gravity: 0.99 G

Time & Orbit

Eccentricity (e): 0.067

Orbit Range: 4.25 AU - 4.87 AU

Year: 3593 Days

Day: 14.2 Hours

Environment

Temp: -134 °C

Axial Tilt: 1.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 53,024,084 km

• M1: 2,105,590 km (0.063 R)

Asteroid Belt

Center: 6.09 AU

Composition

Type: Main (Rocky/Icy Mix)

A dense region of planetesimals and debris.

Boundary

Planet 5 - Gas Giant

Semi-Major Axis: 7.61 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 815.3

Radius: 12

Gravity: 5.66 G

Time & Orbit

Eccentricity (e): 0.099

Orbit Range: 6.86 AU - 8.36 AU

Year: 7746 Days

Day: 11.6 Hours

Environment

Temp: -165 °C

Axial Tilt: 49.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (26)

Outer Limit: 53,024,084 km

• M1: 149,299 km (0.033 R)
• M2: 616,343 km (0.088 R)
• M3: 1,027,438 km (0.081 R)
• M4: 1,697,487 km (0.111 R)
• M5: 3,639,267 km (0.069 R)
• M6: 4,250,823 km (0.07 R)
• M7: 4,638,581 km (0.082 R)
• M8: 5,019,906 km (0.044 R)
• M9: 5,518,067 km (0.093 R)
• M10: 6,909,327 km (0.108 R)
• M11: 7,890,540 km (0.092 R)
• M12: 8,565,675 km (0.05 R)
• M13: 8,962,259 km (0.119 R)
• M14: 12,091,697 km (0.03 R)
• M15: 12,648,051 km (0.112 R)
• M16: 13,221,310 km (0.064 R)
• M17: 13,632,854 km (0.051 R)
• M18: 15,172,964 km (0.102 R)
• M19: 15,559,226 km (0.03 R)
• M20: 20,722,895 km (0.115 R)
• M21: 24,209,723 km (0.041 R)
• M22: 25,726,047 km (0.082 R)
• M23: 27,021,564 km (0.101 R)
• M24: 30,145,617 km (0.102 R)
• M25: 36,869,442 km (0.093 R)
• M26: 37,451,677 km (0.087 R)

Planet 6 - Gas Giant

Semi-Major Axis: 9.59 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 920.9

Radius: 12.9

Gravity: 5.53 G

Time & Orbit

Eccentricity (e): 0.169

Orbit Range: 7.97 AU - 11.21 AU

Year: 10957 Days

Day: 11 Hours

Environment

Temp: -169 °C

Axial Tilt: 43.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 53,024,084 km

• M1: 160,369 km (0.105 R)
• M2: 694,583 km (0.026 R)
• M3: 1,251,835 km (0.113 R)
• M4: 1,689,409 km (0.032 R)
• M5: 7,295,589 km (0.1 R)
• M6: 10,272,736 km (0.076 R)
• M7: 11,327,551 km (0.092 R)
• M8: 16,060,528 km (0.101 R)
• M9: 19,145,087 km (0.107 R)
• M10: 21,349,860 km (0.104 R)
• M11: 24,289,757 km (0.057 R)
• M12: 27,593,926 km (0.116 R)
• M13: 31,872,126 km (0.093 R)
• M14: 33,868,210 km (0.104 R)
• M15: 34,958,180 km (0.064 R)
• M16: 46,431,738 km (0.027 R)
• M17: 47,026,240 km (0.098 R)
• M18: 47,475,483 km (0.111 R)
• M19: 49,146,940 km (0.114 R)
• M20: 53,415,865 km (0.076 R)
• M21: 54,726,641 km (0.077 R)

Planet 7 - Gas Giant

Semi-Major Axis: 10.99 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 77.6

Radius: 9

Gravity: 0.96 G

Time & Orbit

Eccentricity (e): 0.104

Orbit Range: 9.85 AU - 12.13 AU

Year: 13442 Days

Day: 12.5 Hours

Environment

Temp: -174 °C

Axial Tilt: 1.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 53,024,084 km

• M1: 112,498 km (0.107 R)
• M2: 1,846,038 km (0.077 R)
• M3: 2,196,546 km (0.119 R)
• M4: 2,525,212 km (0.097 R)
• M5: 9,037,507 km (0.108 R)
• M6: 12,512,366 km (0.118 R)
• M7: 19,947,829 km (0.076 R)
• M8: 24,542,129 km (0.026 R)
• M9: 25,083,823 km (0.059 R)
• M10: 26,432,747 km (0.069 R)
• M11: 27,330,933 km (0.116 R)

Planet 8 - Gas Giant

Semi-Major Axis: 11.57 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 439.8

Radius: 13.9

Gravity: 2.28 G

Time & Orbit

Eccentricity (e): 0.105

Orbit Range: 10.36 AU - 12.78 AU

Year: 14520 Days

Day: 12.8 Hours

Environment

Temp: -188 °C

Axial Tilt: 0.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 53,024,084 km

• M1: 175,478 km (0.101 R)
• M2: 1,156,392 km (0.103 R)
• M3: 1,657,694 km (0.028 R)
• M4: 2,213,749 km (0.083 R)
• M5: 3,004,823 km (0.073 R)
• M6: 5,317,157 km (0.037 R)
• M7: 7,183,690 km (0.114 R)
• M8: 8,085,765 km (0.087 R)
• M9: 14,687,070 km (0.11 R)
• M10: 19,410,473 km (0.108 R)
• M11: 21,763,498 km (0.108 R)
• M12: 22,203,017 km (0.098 R)
• M13: 26,131,756 km (0.117 R)
• M14: 38,445,157 km (0.115 R)
• M15: 40,131,424 km (0.101 R)
• M16: 46,495,168 km (0.066 R)
• M17: 47,225,056 km (0.093 R)

Kuiper Belt

Range: 30 - 47 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 256 - 13,007 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit