🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.29 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.58 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.25

Radius: 1.78

Gravity: 1.34 G

Time & Orbit

Eccentricity (e): 0.065

Orbit Range: 0.54 AU - 0.62 AU

Year: 285 Days

Day: 39.2 Hours

Environment

Temp: -128 °C

Axial Tilt: 6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.82 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 544.2

Radius: 11.8

Gravity: 3.91 G

Time & Orbit

Eccentricity (e): 0.045

Orbit Range: 0.78 AU - 0.86 AU

Year: 479 Days

Day: 13.5 Hours

Environment

Temp: -140 °C

Axial Tilt: 38.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 57,048,274 km

• M1: 146,756 km (0.115 R)
• M2: 534,663 km (0.076 R)
• M3: 987,496 km (0.076 R)
• M4: 1,488,499 km (0.118 R)
• M5: 1,872,517 km (0.103 R)
• M6: 2,378,008 km (0.06 R)
• M7: 3,460,348 km (0.117 R)
• M8: 3,999,649 km (0.118 R)
• M9: 4,565,727 km (0.04 R)
• M10: 4,951,989 km (0.034 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.95 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 783.5

Radius: 10.5

Gravity: 7.11 G

Time & Orbit

Eccentricity (e): 0.027

Orbit Range: 0.92 AU - 0.98 AU

Year: 598 Days

Day: 6 Hours

Environment

Temp: -146 °C

Axial Tilt: 14.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 57,048,274 km

• M1: 130,599 km (0.107 R)
• M2: 476,320 km (0.119 R)
• M3: 922,869 km (0.107 R)
• M4: 2,659,701 km (0.051 R)
• M5: 3,747,277 km (0.104 R)
• M6: 4,209,086 km (0.095 R)
• M7: 5,091,713 km (0.117 R)
• M8: 5,939,933 km (0.108 R)
• M9: 6,408,174 km (0.086 R)
• M10: 7,308,604 km (0.093 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.52 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 136.6

Radius: 14.4

Gravity: 0.66 G

Time & Orbit

Eccentricity (e): 0.137

Orbit Range: 1.31 AU - 1.73 AU

Year: 1210 Days

Day: 14.7 Hours

Environment

Temp: -181 °C

Axial Tilt: 33.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 57,048,274 km

• M1: 179,517 km (0.092 R)
• M2: 676,930 km (0.111 R)
• M3: 1,627,326 km (0.104 R)
• M4: 2,185,625 km (0.097 R)
• M5: 2,860,760 km (0.117 R)
• M6: 3,443,593 km (0.05 R)
• M7: 4,407,901 km (0.079 R)
• M8: 6,324,848 km (0.059 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.95 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 411.7

Radius: 11.9

Gravity: 2.91 G

Time & Orbit

Eccentricity (e): 0.012

Orbit Range: 1.93 AU - 1.97 AU

Year: 1758 Days

Day: 13.1 Hours

Environment

Temp: -197 °C

Axial Tilt: 4.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 57,048,274 km

• M1: 147,952 km (0.113 R)
• M2: 540,198 km (0.047 R)
• M3: 969,245 km (0.119 R)
• M4: 1,401,433 km (0.076 R)
• M5: 1,812,378 km (0.109 R)
• M6: 2,363,347 km (0.105 R)
• M7: 3,530,510 km (0.118 R)
• M8: 4,041,237 km (0.036 R)
• M9: 4,433,333 km (0.037 R)
• M10: 4,811,816 km (0.074 R)
• M11: 5,943,523 km (0.08 R)
• M12: 6,334,273 km (0.108 R)
• M13: 6,840,811 km (0.076 R)
• M14: 7,270,606 km (0.086 R)
• M15: 8,325,271 km (0.101 R)
• M16: 9,448,302 km (0.078 R)
• M17: 10,503,117 km (0.079 R)
• M18: 11,249,012 km (0.099 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.06 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 61

Radius: 14.9

Gravity: 0.27 G

Time & Orbit

Eccentricity (e): 0.176

Orbit Range: 2.52 AU - 3.6 AU

Year: 3456 Days

Day: 7.3 Hours

Environment

Temp: -212 °C

Axial Tilt: 29 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 57,048,274 km

• M1: 185,352 km (0.078 R)
• M2: 986,000 km (0.113 R)
• M3: 1,709,754 km (0.087 R)
• M4: 2,990,162 km (0.112 R)
• M5: 3,528,715 km (0.096 R)
• M6: 5,607,975 km (0.106 R)
• M7: 6,236,286 km (0.094 R)
• M8: 6,818,671 km (0.056 R)
• M9: 7,363,955 km (0.108 R)
• M10: 8,515,560 km (0.111 R)
• M11: 9,608,073 km (0.099 R)
• M12: 10,173,403 km (0.076 R)

Planet 7 - Ice Giant

Semi-Major Axis: 10.58 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 233.9

Radius: 7.7

Gravity: 3.95 G

Time & Orbit

Eccentricity (e): 0.133

Orbit Range: 9.17 AU - 11.99 AU

Year: 22220 Days

Day: 17.3 Hours

Environment

Temp: -239 °C

Axial Tilt: 12.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (31)

Outer Limit: 57,048,274 km

• M1: 95,892 km (0.108 R)
• M2: 375,640 km (0.073 R)
• M3: 744,549 km (0.089 R)
• M4: 1,254,528 km (0.092 R)
• M5: 3,099,069 km (0.114 R)
• M6: 4,436,923 km (0.099 R)
• M7: 5,425,167 km (0.093 R)
• M8: 6,084,594 km (0.075 R)
• M9: 7,003,424 km (0.044 R)
• M10: 7,474,209 km (0.076 R)
• M11: 9,779,512 km (0.053 R)
• M12: 10,097,557 km (0.108 R)
• M13: 14,201,326 km (0.091 R)
• M14: 15,378,212 km (0.12 R)
• M15: 17,689,350 km (0.107 R)
• M16: 22,160,381 km (0.06 R)
• M17: 22,525,550 km (0.084 R)
• M18: 23,740,284 km (0.102 R)
• M19: 25,294,457 km (0.065 R)
• M20: 26,503,806 km (0.118 R)
• M21: 28,069,048 km (0.104 R)
• M22: 33,731,328 km (0.064 R)
• M23: 36,828,602 km (0.039 R)
• M24: 37,469,928 km (0.108 R)
• M25: 40,789,355 km (0.1 R)
• M26: 41,475,860 km (0.07 R)
• M27: 45,611,044 km (0.053 R)
• M28: 46,648,805 km (0.04 R)
• M29: 50,012,812 km (0.072 R)
• M30: 53,208,223 km (0.116 R)
• M31: 56,198,235 km (0.087 R)

Kuiper Belt

Range: 30 - 56 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 170 - 14,712 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit