🌌 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: 0.51 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.87

Radius: 1.52

Gravity: 1.24 G

Time & Orbit

Eccentricity (e): 0.192

Orbit Range: 0.41 AU - 0.61 AU

Year: 235 Days

Day: 36.3 Hours

Environment

Temp: -116 °C

Axial Tilt: 14.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.76 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 577.3

Radius: 10.4

Gravity: 5.34 G

Time & Orbit

Eccentricity (e): 0.191

Orbit Range: 0.61 AU - 0.91 AU

Year: 428 Days

Day: 9.9 Hours

Environment

Temp: -151 °C

Axial Tilt: 22.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 39,182,126 km

• M1: 129,402 km (0.058 R)
• M2: 513,121 km (0.092 R)
• M3: 868,116 km (0.116 R)
• M4: 1,240,166 km (0.089 R)
• M5: 1,807,591 km (0.105 R)
• M6: 2,329,987 km (0.118 R)
• M7: 3,046,561 km (0.106 R)
• M8: 3,703,295 km (0.066 R)
• M9: 5,004,946 km (0.084 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.92 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 417

Radius: 9.6

Gravity: 4.52 G

Time & Orbit

Eccentricity (e): 0.029

Orbit Range: 0.89 AU - 0.95 AU

Year: 570 Days

Day: 14.9 Hours

Environment

Temp: -144 °C

Axial Tilt: 155 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 39,182,126 km

• M1: 119,379 km (0.081 R)
• M2: 420,520 km (0.047 R)
• M3: 874,250 km (0.103 R)
• M4: 1,205,460 km (0.054 R)
• M5: 1,643,333 km (0.094 R)
• M6: 1,964,968 km (0.1 R)
• M7: 2,960,542 km (0.076 R)
• M8: 3,454,065 km (0.113 R)
• M9: 3,961,800 km (0.103 R)
• M10: 4,969,641 km (0.068 R)
• M11: 5,368,320 km (0.114 R)
• M12: 5,702,521 km (0.103 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.15 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 714.7

Radius: 12.8

Gravity: 4.36 G

Time & Orbit

Eccentricity (e): 0.067

Orbit Range: 1.07 AU - 1.23 AU

Year: 796 Days

Day: 8.7 Hours

Environment

Temp: -159 °C

Axial Tilt: 21.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 39,182,126 km

• M1: 159,471 km (0.116 R)
• M2: 561,291 km (0.117 R)
• M3: 1,094,608 km (0.112 R)
• M4: 2,116,511 km (0.1 R)
• M5: 2,542,117 km (0.115 R)
• M6: 3,126,446 km (0.075 R)
• M7: 4,024,033 km (0.086 R)
• M8: 4,600,434 km (0.089 R)
• M9: 5,416,789 km (0.082 R)
• M10: 5,820,554 km (0.077 R)
• M11: 6,348,485 km (0.055 R)
• M12: 7,245,922 km (0.098 R)
• M13: 7,785,372 km (0.099 R)
• M14: 8,376,882 km (0.038 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.43 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 56.4

Radius: 10.7

Gravity: 0.49 G

Time & Orbit

Eccentricity (e): 0.153

Orbit Range: 2.91 AU - 3.95 AU

Year: 4102 Days

Day: 14.2 Hours

Environment

Temp: -213 °C

Axial Tilt: 35.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 39,182,126 km

• M1: 244,593 km (0.096 R)
• M2: 637,885 km (0.091 R)
• M3: 2,026,154 km (0.103 R)
• M4: 5,470,645 km (0.066 R)
• M5: 5,958,782 km (0.112 R)
• M6: 7,195,059 km (0.11 R)

Planet 6 - Ice Giant

Semi-Major Axis: 6.04 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 248.7

Radius: 5

Gravity: 9.95 G

Time & Orbit

Eccentricity (e): 0.179

Orbit Range: 4.96 AU - 7.12 AU

Year: 9585 Days

Day: 17.5 Hours

Environment

Temp: -214 °C

Axial Tilt: 15.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 39,182,126 km

• M1: 70,909 km (0.119 R)
• M2: 246,238 km (0.07 R)
• M3: 435,031 km (0.11 R)
• M4: 1,031,627 km (0.064 R)
• M5: 2,045,452 km (0.118 R)
• M6: 2,299,020 km (0.1 R)
• M7: 2,831,140 km (0.094 R)
• M8: 3,333,938 km (0.069 R)
• M9: 4,013,711 km (0.061 R)
• M10: 4,808,674 km (0.106 R)
• M11: 6,014,732 km (0.102 R)
• M12: 6,174,353 km (0.088 R)
• M13: 7,373,081 km (0.117 R)
• M14: 8,597,838 km (0.103 R)
• M15: 8,841,683 km (0.12 R)
• M16: 12,088,406 km (0.071 R)
• M17: 31,963,829 km (0.113 R)

Planet 7 - Ice Giant

Semi-Major Axis: 6.93 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 336.9

Radius: 3.1

Gravity: 35.06 G

Time & Orbit

Eccentricity (e): 0.06

Orbit Range: 6.51 AU - 7.35 AU

Year: 11779 Days

Day: 23 Hours

Environment

Temp: -228 °C

Axial Tilt: 8.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (33)

Outer Limit: 39,182,126 km

• M1: 42,336 km (0.092 R)
• M2: 154,235 km (0.05 R)
• M3: 264,489 km (0.076 R)
• M4: 391,198 km (0.044 R)
• M5: 551,567 km (0.093 R)
• M6: 729,439 km (0.055 R)
• M7: 915,389 km (0.084 R)
• M8: 1,066,782 km (0.096 R)
• M9: 1,211,444 km (0.092 R)
• M10: 1,512,734 km (0.083 R)
• M11: 1,956,890 km (0.067 R)
• M12: 2,191,459 km (0.101 R)
• M13: 2,656,709 km (0.113 R)
• M14: 3,344,111 km (0.107 R)
• M15: 4,223,148 km (0.069 R)
• M16: 4,672,241 km (0.118 R)
• M17: 5,029,181 km (0.114 R)
• M18: 5,183,267 km (0.084 R)
• M19: 6,530,994 km (0.051 R)
• M20: 8,095,788 km (0.087 R)
• M21: 11,299,426 km (0.102 R)
• M22: 12,381,617 km (0.081 R)
• M23: 12,493,367 km (0.097 R)
• M24: 13,120,780 km (0.082 R)
• M25: 16,105,408 km (0.071 R)
• M26: 17,542,445 km (0.118 R)
• M27: 20,904,956 km (0.093 R)
• M28: 21,223,001 km (0.103 R)
• M29: 27,897,909 km (0.112 R)
• M30: 31,915,210 km (0.077 R)
• M31: 33,624,365 km (0.097 R)
• M32: 33,842,180 km (0.068 R)
• M33: 34,390,905 km (0.051 R)

Planet 8 - Ice Giant

Semi-Major Axis: 9.28 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 112.3

Radius: 5

Gravity: 4.49 G

Time & Orbit

Eccentricity (e): 0.2

Orbit Range: 7.42 AU - 11.14 AU

Year: 18253 Days

Day: 17 Hours

Environment

Temp: -239 °C

Axial Tilt: 37.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 39,182,126 km

• M1: 64,626 km (0.093 R)
• M2: 334,800 km (0.094 R)
• M3: 1,455,288 km (0.055 R)
• M4: 1,980,077 km (0.102 R)
• M5: 2,225,717 km (0.075 R)
• M6: 6,429,716 km (0.068 R)
• M7: 9,029,279 km (0.074 R)
• M8: 11,105,697 km (0.098 R)
• M9: 12,581,031 km (0.108 R)
• M10: 14,724,619 km (0.074 R)
• M11: 16,965,147 km (0.108 R)
• M12: 17,234,871 km (0.11 R)
• M13: 22,673,951 km (0.062 R)
• M14: 24,086,753 km (0.055 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: 217 - 18,425 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit