🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.31 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.61 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.14

Radius: 1.36

Gravity: 1.16 G

Time & Orbit

Eccentricity (e): 0.245

Orbit Range: 0.46 AU - 0.76 AU

Year: 308 Days

Day: 16.4 Hours

Environment

Temp: -138 °C

Axial Tilt: 24.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.92 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 421.9

Radius: 11

Gravity: 3.49 G

Time & Orbit

Eccentricity (e): 0.033

Orbit Range: 0.89 AU - 0.95 AU

Year: 570 Days

Day: 13.1 Hours

Environment

Temp: -149 °C

Axial Tilt: 36.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 87,864,337 km

• M1: 141,819 km (0.045 R)
• M2: 492,327 km (0.052 R)
• M3: 1,411,606 km (0.094 R)
• M4: 1,795,324 km (0.104 R)
• M5: 2,470,609 km (0.104 R)
• M6: 3,113,431 km (0.086 R)
• M7: 3,916,921 km (0.115 R)
• M8: 4,468,040 km (0.098 R)
• M9: 4,929,998 km (0.109 R)
• M10: 5,640,737 km (0.069 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.04 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 24.1

Radius: 8.8

Gravity: 0.31 G

Time & Orbit

Eccentricity (e): 0.129

Orbit Range: 0.91 AU - 1.17 AU

Year: 685 Days

Day: 10.5 Hours

Environment

Temp: -161 °C

Axial Tilt: 8.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 87,864,337 km

• M1: 146,008 km (0.068 R)
• M2: 471,981 km (0.093 R)
• M3: 801,396 km (0.086 R)
• M4: 1,246,300 km (0.109 R)
• M5: 1,885,681 km (0.079 R)
• M6: 2,202,081 km (0.105 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.52 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 46.8

Radius: 10.9

Gravity: 0.39 G

Time & Orbit

Eccentricity (e): 0.024

Orbit Range: 1.48 AU - 1.56 AU

Year: 1210 Days

Day: 9.6 Hours

Environment

Temp: -171 °C

Axial Tilt: 24.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 87,864,337 km

• M1: 135,685 km (0.097 R)
• M2: 885,470 km (0.08 R)
• M3: 1,706,014 km (0.067 R)
• M4: 2,092,874 km (0.095 R)
• M5: 2,976,100 km (0.102 R)
• M6: 4,282,538 km (0.113 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.76 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 25.2

Radius: 10.8

Gravity: 0.22 G

Time & Orbit

Eccentricity (e): 0.163

Orbit Range: 1.47 AU - 2.05 AU

Year: 1508 Days

Day: 9.5 Hours

Environment

Temp: -176 °C

Axial Tilt: 12.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 87,864,337 km

• M1: 134,339 km (0.11 R)
• M2: 597,943 km (0.116 R)
• M3: 1,203,964 km (0.059 R)
• M4: 1,975,290 km (0.102 R)
• M5: 2,419,895 km (0.116 R)
• M6: 3,039,380 km (0.109 R)
• M7: 3,855,287 km (0.091 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.2 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 175.1

Radius: 10.5

Gravity: 1.59 G

Time & Orbit

Eccentricity (e): 0.055

Orbit Range: 3.02 AU - 3.38 AU

Year: 3696 Days

Day: 10.3 Hours

Environment

Temp: -211 °C

Axial Tilt: 122.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 87,864,337 km

• M1: 131,646 km (0.061 R)
• M2: 1,613,413 km (0.112 R)
• M3: 3,622,512 km (0.119 R)
• M4: 3,996,956 km (0.073 R)
• M5: 4,972,783 km (0.097 R)
• M6: 6,870,282 km (0.095 R)
• M7: 8,205,294 km (0.098 R)
• M8: 9,739,569 km (0.039 R)
• M9: 10,432,208 km (0.099 R)
• M10: 12,189,384 km (0.098 R)
• M11: 14,005,652 km (0.117 R)

Planet 7 - Ice Giant

Semi-Major Axis: 10.39 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 902.3

Radius: 3.6

Gravity: 69.62 G

Time & Orbit

Eccentricity (e): 0.189

Orbit Range: 8.43 AU - 12.35 AU

Year: 21624 Days

Day: 20 Hours

Environment

Temp: -223 °C

Axial Tilt: 48.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (40)

Outer Limit: 87,864,337 km

• M1: 46,375 km (0.072 R)
• M2: 181,911 km (0.11 R)
• M3: 531,820 km (0.081 R)
• M4: 656,735 km (0.096 R)
• M5: 1,099,395 km (0.115 R)
• M6: 1,735,186 km (0.109 R)
• M7: 1,891,067 km (0.044 R)
• M8: 2,737,641 km (0.078 R)
• M9: 3,650,936 km (0.101 R)
• M10: 4,006,979 km (0.075 R)
• M11: 4,565,577 km (0.06 R)
• M12: 5,134,797 km (0.045 R)
• M13: 5,416,041 km (0.068 R)
• M14: 6,009,197 km (0.106 R)
• M15: 7,679,607 km (0.101 R)
• M16: 8,537,102 km (0.104 R)
• M17: 11,557,632 km (0.102 R)
• M18: 14,104,985 km (0.058 R)
• M19: 17,989,443 km (0.074 R)
• M20: 19,204,178 km (0.108 R)
• M21: 23,174,206 km (0.09 R)
• M22: 23,500,479 km (0.081 R)
• M23: 27,294,132 km (0.063 R)
• M24: 29,398,974 km (0.066 R)
• M25: 29,781,196 km (0.113 R)
• M26: 30,686,263 km (0.119 R)
• M27: 31,343,746 km (0.091 R)
• M28: 36,211,511 km (0.113 R)
• M29: 37,242,091 km (0.026 R)
• M30: 37,540,090 km (0.059 R)
• M31: 45,686,292 km (0.078 R)
• M32: 50,805,382 km (0.115 R)
• M33: 57,080,264 km (0.032 R)
• M34: 57,476,250 km (0.03 R)
• M35: 59,281,298 km (0.056 R)
• M36: 59,891,358 km (0.04 R)
• M37: 64,922,634 km (0.047 R)
• M38: 74,627,945 km (0.056 R)
• M39: 76,534,271 km (0.088 R)
• M40: 80,692,044 km (0.089 R)

Kuiper Belt

Range: 30 - 52 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 340 - 15,770 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit