🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.26 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.52 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.97

Radius: 1.9

Gravity: 1.38 G

Time & Orbit

Eccentricity (e): 0.137

Orbit Range: 0.45 AU - 0.59 AU

Year: 238 Days

Day: 41.9 Hours

Environment

Temp: -121 °C

Axial Tilt: 5.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.59 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.25

Radius: 1.09

Gravity: 1.05 G

Time & Orbit

Eccentricity (e): 0.089

Orbit Range: 0.54 AU - 0.64 AU

Year: 288 Days

Day: 29.2 Hours

Environment

Temp: -136 °C

Axial Tilt: 70.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.73 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 582.9

Radius: 11.2

Gravity: 4.65 G

Time & Orbit

Eccentricity (e): 0.097

Orbit Range: 0.66 AU - 0.8 AU

Year: 397 Days

Day: 15 Hours

Environment

Temp: -136 °C

Axial Tilt: 27.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 26,660,319 km

• M1: 139,575 km (0.077 R)
• M2: 611,107 km (0.106 R)
• M3: 1,250,189 km (0.048 R)
• M4: 1,611,169 km (0.092 R)
• M5: 1,964,519 km (0.074 R)
• M6: 2,335,073 km (0.1 R)
• M7: 2,812,141 km (0.033 R)
• M8: 3,716,161 km (0.079 R)
• M9: 4,066,220 km (0.1 R)
• M10: 5,220,666 km (0.07 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.59 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 983.1

Radius: 8

Gravity: 15.36 G

Time & Orbit

Eccentricity (e): 0.155

Orbit Range: 1.34 AU - 1.84 AU

Year: 1275 Days

Day: 9.3 Hours

Environment

Temp: -172 °C

Axial Tilt: 8.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 26,660,319 km

• M1: 99,483 km (0.109 R)
• M2: 376,089 km (0.05 R)
• M3: 766,091 km (0.102 R)
• M4: 1,085,333 km (0.044 R)
• M5: 1,556,566 km (0.104 R)
• M6: 1,913,506 km (0.117 R)
• M7: 2,474,199 km (0.065 R)
• M8: 2,752,152 km (0.095 R)
• M9: 4,336,693 km (0.028 R)
• M10: 5,173,842 km (0.071 R)
• M11: 6,114,663 km (0.038 R)
• M12: 6,576,023 km (0.1 R)
• M13: 6,853,527 km (0.109 R)
• M14: 7,297,833 km (0.109 R)
• M15: 7,568,156 km (0.074 R)
• M16: 8,419,219 km (0.054 R)
• M17: 8,746,838 km (0.106 R)
• M18: 9,651,456 km (0.101 R)
• M19: 10,548,445 km (0.052 R)
• M20: 10,859,459 km (0.08 R)
• M21: 11,682,247 km (0.091 R)
• M22: 13,013,070 km (0.119 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.14 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 114.1

Radius: 12

Gravity: 0.79 G

Time & Orbit

Eccentricity (e): 0.208

Orbit Range: 1.69 AU - 2.59 AU

Year: 1990 Days

Day: 9.2 Hours

Environment

Temp: -201 °C

Axial Tilt: 13.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 26,660,319 km

• M1: 149,299 km (0.073 R)
• M2: 561,740 km (0.104 R)
• M3: 1,919,341 km (0.098 R)
• M4: 4,138,775 km (0.096 R)
• M5: 4,525,036 km (0.096 R)
• M6: 5,186,558 km (0.047 R)
• M7: 6,174,503 km (0.076 R)
• M8: 7,215,255 km (0.109 R)

Planet 6 - Gas Giant

Semi-Major Axis: 4.34 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 394

Radius: 13.4

Gravity: 2.19 G

Time & Orbit

Eccentricity (e): 0.104

Orbit Range: 3.89 AU - 4.79 AU

Year: 5749 Days

Day: 13.8 Hours

Environment

Temp: -215 °C

Axial Tilt: 2.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 26,660,319 km

• M1: 166,652 km (0.028 R)
• M2: 921,224 km (0.096 R)
• M3: 2,110,377 km (0.1 R)
• M4: 2,815,731 km (0.107 R)
• M5: 3,429,082 km (0.059 R)
• M6: 4,268,027 km (0.049 R)
• M7: 4,824,382 km (0.117 R)
• M8: 5,707,308 km (0.114 R)
• M9: 6,951,215 km (0.115 R)
• M10: 11,132,625 km (0.066 R)
• M11: 13,266,489 km (0.073 R)
• M12: 14,403,582 km (0.03 R)
• M13: 19,154,511 km (0.041 R)
• M14: 21,151,643 km (0.085 R)
• M15: 21,706,950 km (0.085 R)
• M16: 24,176,063 km (0.116 R)
• M17: 24,706,836 km (0.117 R)
• M18: 26,186,658 km (0.106 R)
• M19: 27,232,647 km (0.112 R)

Planet 7 - Ice Giant

Semi-Major Axis: 6.75 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 94.8

Radius: 5.9

Gravity: 2.72 G

Time & Orbit

Eccentricity (e): 0.118

Orbit Range: 5.95 AU - 7.55 AU

Year: 11150 Days

Day: 16.7 Hours

Environment

Temp: -228 °C

Axial Tilt: 0.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 26,660,319 km

• M1: 73,303 km (0.104 R)
• M2: 302,487 km (0.112 R)
• M3: 742,155 km (0.116 R)
• M4: 1,711,998 km (0.072 R)
• M5: 2,496,040 km (0.05 R)
• M6: 3,416,666 km (0.119 R)
• M7: 3,986,933 km (0.116 R)
• M8: 4,520,997 km (0.099 R)
• M9: 7,141,503 km (0.063 R)
• M10: 10,544,256 km (0.113 R)
• M11: 11,424,939 km (0.098 R)
• M12: 12,641,768 km (0.097 R)
• M13: 14,840,109 km (0.062 R)
• M14: 16,000,988 km (0.085 R)
• M15: 16,458,758 km (0.113 R)
• M16: 19,198,044 km (0.058 R)
• M17: 19,584,755 km (0.118 R)
• M18: 22,226,653 km (0.106 R)
• M19: 23,669,375 km (0.088 R)
• M20: 25,327,368 km (0.073 R)

Kuiper Belt

Range: 30 - 49 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 205 - 13,146 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit