🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.29 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.58 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.94

Radius: 1.89

Gravity: 1.38 G

Time & Orbit

Eccentricity (e): 0.012

Orbit Range: 0.57 AU - 0.59 AU

Year: 156 Days

Day: 27.9 Hours

Environment

Temp: 179 °C

Axial Tilt: 21.3 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Satellites (1)

Outer Limit: 79,030,019 km

• M1: 268,528 km (0.111 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.67 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.31

Radius: 1.61

Gravity: 1.28 G

Time & Orbit

Eccentricity (e): 0.006

Orbit Range: 0.67 AU - 0.67 AU

Year: 194 Days

Day: 12.3 Hours

Environment

Temp: 192 °C

Axial Tilt: 21.3 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 3 - Terrestrial

Semi-Major Axis: 1.09 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.88

Radius: 0.95

Gravity: 0.98 G

Time & Orbit

Eccentricity (e): 0.182

Orbit Range: 0.89 AU - 1.29 AU

Year: 402 Days

Day: 27.3 Hours

Environment

Temp: 43 °C

Axial Tilt: 28.5 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Satellites (2)

Outer Limit: 79,030,019 km

• M1: 66,122 km (0.029 R)
• M2: 142,567 km (0.082 R)

Planet 4 - Terrestrial

Semi-Major Axis: 4.4 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.6

Radius: 1.47

Gravity: 1.2 G

Time & Orbit

Eccentricity (e): 0.08

Orbit Range: 4.05 AU - 4.75 AU

Year: 3259 Days

Day: 14.1 Hours

Environment

Temp: -123 °C

Axial Tilt: 8.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Asteroid Belt

Center: 7.7 AU

Composition

Type: Main (Rocky/Icy Mix)

A dense region of planetesimals and debris.

Boundary

Planet 5 - Gas Giant

Semi-Major Axis: 10.99 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 145.2

Radius: 9.4

Gravity: 1.64 G

Time & Orbit

Eccentricity (e): 0.039

Orbit Range: 10.56 AU - 11.42 AU

Year: 12865 Days

Day: 14.3 Hours

Environment

Temp: -175 °C

Axial Tilt: 27.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 79,030,019 km

• M1: 120,127 km (0.097 R)
• M2: 470,784 km (0.118 R)
• M3: 1,026,541 km (0.045 R)
• M4: 2,967,124 km (0.091 R)
• M5: 3,592,294 km (0.112 R)
• M6: 5,132,404 km (0.084 R)
• M7: 6,656,058 km (0.065 R)
• M8: 8,184,799 km (0.078 R)
• M9: 8,580,784 km (0.098 R)
• M10: 9,758,269 km (0.108 R)
• M11: 17,365,470 km (0.081 R)
• M12: 20,879,076 km (0.073 R)
• M13: 22,224,559 km (0.064 R)
• M14: 24,512,658 km (0.089 R)
• M15: 30,768,692 km (0.073 R)
• M16: 32,410,379 km (0.098 R)
• M17: 33,704,699 km (0.084 R)

Planet 6 - Ice Giant

Semi-Major Axis: 18.51 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 640.7

Radius: 7.3

Gravity: 12.02 G

Time & Orbit

Eccentricity (e): 0.076

Orbit Range: 17.1 AU - 19.92 AU

Year: 28120 Days

Day: 18 Hours

Environment

Temp: -197 °C

Axial Tilt: 147.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (30)

Outer Limit: 79,030,019 km

• M1: 92,003 km (0.099 R)
• M2: 502,350 km (0.074 R)
• M3: 771,925 km (0.063 R)
• M4: 1,018,014 km (0.065 R)
• M5: 1,548,488 km (0.059 R)
• M6: 2,138,801 km (0.056 R)
• M7: 2,389,826 km (0.097 R)
• M8: 2,660,598 km (0.102 R)
• M9: 3,567,012 km (0.1 R)
• M10: 5,414,994 km (0.104 R)
• M11: 6,520,971 km (0.105 R)
• M12: 7,002,976 km (0.094 R)
• M13: 11,134,570 km (0.065 R)
• M14: 11,406,688 km (0.081 R)
• M15: 20,142,456 km (0.09 R)
• M16: 25,126,010 km (0.107 R)
• M17: 27,900,751 km (0.109 R)
• M18: 30,474,133 km (0.075 R)
• M19: 35,059,308 km (0.087 R)
• M20: 35,497,630 km (0.089 R)
• M21: 36,684,390 km (0.09 R)
• M22: 45,568,110 km (0.083 R)
• M23: 48,038,569 km (0.057 R)
• M24: 53,052,491 km (0.104 R)
• M25: 56,782,714 km (0.073 R)
• M26: 59,848,423 km (0.045 R)
• M27: 74,411,626 km (0.114 R)
• M28: 75,135,531 km (0.093 R)
• M29: 78,326,752 km (0.119 R)
• M30: 83,151,583 km (0.119 R)

Planet 7 - Ice Giant

Semi-Major Axis: 19.43 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 335.7

Radius: 6

Gravity: 9.33 G

Time & Orbit

Eccentricity (e): 0.039

Orbit Range: 18.67 AU - 20.19 AU

Year: 30242 Days

Day: 23.4 Hours

Environment

Temp: -202 °C

Axial Tilt: 9.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (28)

Outer Limit: 79,030,019 km

• M1: 77,043 km (0.118 R)
• M2: 448,943 km (0.044 R)
• M3: 974,032 km (0.054 R)
• M4: 2,810,046 km (0.037 R)
• M5: 3,851,248 km (0.089 R)
• M6: 4,722,206 km (0.067 R)
• M7: 4,940,619 km (0.108 R)
• M8: 5,280,805 km (0.083 R)
• M9: 6,352,075 km (0.101 R)
• M10: 6,892,423 km (0.051 R)
• M11: 8,167,745 km (0.092 R)
• M12: 8,429,990 km (0.047 R)
• M13: 10,063,000 km (0.087 R)
• M14: 10,922,141 km (0.107 R)
• M15: 13,940,427 km (0.088 R)
• M16: 16,622,418 km (0.117 R)
• M17: 18,530,090 km (0.104 R)
• M18: 24,791,359 km (0.056 R)
• M19: 25,899,580 km (0.081 R)
• M20: 27,156,352 km (0.091 R)
• M21: 29,299,641 km (0.041 R)
• M22: 33,651,143 km (0.077 R)
• M23: 37,831,955 km (0.1 R)
• M24: 38,560,946 km (0.081 R)
• M25: 50,998,662 km (0.109 R)
• M26: 65,653,718 km (0.088 R)
• M27: 68,627,724 km (0.096 R)
• M28: 76,453,039 km (0.116 R)

Kuiper Belt

Range: 31.1 - 59.1 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 452 - 15,831 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit