🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.27 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.54 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.75

Radius: 1.25

Gravity: 1.12 G

Time & Orbit

Eccentricity (e): 0.039

Orbit Range: 0.52 AU - 0.56 AU

Year: 260 Days

Day: 45.3 Hours

Environment

Temp: -117 °C

Axial Tilt: 28.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.7 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 487.6

Radius: 12.3

Gravity: 3.22 G

Time & Orbit

Eccentricity (e): 0.078

Orbit Range: 0.65 AU - 0.75 AU

Year: 384 Days

Day: 12.9 Hours

Environment

Temp: -141 °C

Axial Tilt: 37.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 49,845,474 km

• M1: 153,039 km (0.107 R)
• M2: 574,605 km (0.095 R)
• M3: 986,299 km (0.045 R)
• M4: 1,443,171 km (0.064 R)
• M5: 1,944,174 km (0.091 R)
• M6: 2,624,395 km (0.117 R)
• M7: 3,123,903 km (0.107 R)
• M8: 3,709,878 km (0.096 R)
• M9: 4,434,230 km (0.103 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.02 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 687.2

Radius: 13.5

Gravity: 3.77 G

Time & Orbit

Eccentricity (e): 0.143

Orbit Range: 0.87 AU - 1.17 AU

Year: 676 Days

Day: 13.9 Hours

Environment

Temp: -160 °C

Axial Tilt: 34.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 49,845,474 km

• M1: 167,998 km (0.119 R)
• M2: 813,812 km (0.104 R)
• M3: 1,341,295 km (0.117 R)
• M4: 1,876,556 km (0.097 R)
• M5: 2,750,357 km (0.046 R)
• M6: 3,602,466 km (0.094 R)
• M7: 4,464,748 km (0.055 R)
• M8: 5,246,846 km (0.08 R)
• M9: 6,870,731 km (0.067 R)
• M10: 7,891,138 km (0.087 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.18 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 393

Radius: 13.8

Gravity: 2.06 G

Time & Orbit

Eccentricity (e): 0.076

Orbit Range: 1.09 AU - 1.27 AU

Year: 841 Days

Day: 8.3 Hours

Environment

Temp: -167 °C

Axial Tilt: 36.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 49,845,474 km

• M1: 171,589 km (0.092 R)
• M2: 604,824 km (0.115 R)
• M3: 1,192,295 km (0.117 R)
• M4: 1,667,717 km (0.117 R)
• M5: 2,139,848 km (0.116 R)
• M6: 2,691,116 km (0.108 R)
• M7: 3,286,665 km (0.108 R)
• M8: 4,569,317 km (0.106 R)
• M9: 5,457,630 km (0.084 R)
• M10: 5,896,400 km (0.079 R)
• M11: 6,518,278 km (0.063 R)
• M12: 7,622,161 km (0.084 R)

Planet 5 - Gas Giant

Semi-Major Axis: 4.84 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 637.2

Radius: 14

Gravity: 3.25 G

Time & Orbit

Eccentricity (e): 0.224

Orbit Range: 3.76 AU - 5.92 AU

Year: 6985 Days

Day: 13.4 Hours

Environment

Temp: -221 °C

Axial Tilt: 4.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 49,845,474 km

• M1: 174,431 km (0.089 R)
• M2: 668,403 km (0.093 R)
• M3: 1,266,346 km (0.098 R)
• M4: 3,191,970 km (0.063 R)
• M5: 3,932,180 km (0.1 R)
• M6: 4,702,160 km (0.09 R)
• M7: 5,358,895 km (0.09 R)
• M8: 8,619,231 km (0.114 R)
• M9: 9,385,172 km (0.049 R)
• M10: 10,955,800 km (0.108 R)
• M11: 11,701,994 km (0.114 R)
• M12: 12,641,918 km (0.117 R)
• M13: 13,744,604 km (0.088 R)
• M14: 16,977,114 km (0.066 R)
• M15: 17,572,364 km (0.107 R)
• M16: 18,181,676 km (0.118 R)
• M17: 19,015,834 km (0.052 R)
• M18: 20,167,588 km (0.082 R)
• M19: 20,760,744 km (0.109 R)
• M20: 23,331,284 km (0.096 R)
• M21: 30,142,026 km (0.1 R)
• M22: 30,722,765 km (0.116 R)
• M23: 34,786,292 km (0.04 R)
• M24: 35,640,047 km (0.11 R)

Planet 6 - Gas Giant

Semi-Major Axis: 5.11 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 794.4

Radius: 8.3

Gravity: 11.53 G

Time & Orbit

Eccentricity (e): 0.035

Orbit Range: 4.93 AU - 5.29 AU

Year: 7578 Days

Day: 5.4 Hours

Environment

Temp: -207 °C

Axial Tilt: 25.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (26)

Outer Limit: 49,845,474 km

• M1: 103,821 km (0.118 R)
• M2: 363,373 km (0.029 R)
• M3: 659,128 km (0.06 R)
• M4: 971,638 km (0.094 R)
• M5: 1,335,161 km (0.116 R)
• M6: 1,631,215 km (0.079 R)
• M7: 1,924,277 km (0.086 R)
• M8: 2,270,148 km (0.067 R)
• M9: 2,580,114 km (0.034 R)
• M10: 3,908,095 km (0.087 R)
• M11: 4,749,882 km (0.055 R)
• M12: 5,906,722 km (0.082 R)
• M13: 7,436,061 km (0.11 R)
• M14: 7,958,607 km (0.112 R)
• M15: 9,487,796 km (0.107 R)
• M16: 11,100,312 km (0.045 R)
• M17: 13,348,468 km (0.107 R)
• M18: 15,494,001 km (0.049 R)
• M19: 17,299,049 km (0.098 R)
• M20: 18,073,068 km (0.047 R)
• M21: 27,788,852 km (0.08 R)
• M22: 28,171,523 km (0.076 R)
• M23: 32,194,808 km (0.096 R)
• M24: 35,228,503 km (0.071 R)
• M25: 36,585,206 km (0.119 R)
• M26: 38,566,181 km (0.076 R)

Planet 7 - Gas Giant

Semi-Major Axis: 5.32 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 575.8

Radius: 14.1

Gravity: 2.9 G

Time & Orbit

Eccentricity (e): 0.109

Orbit Range: 4.74 AU - 5.9 AU

Year: 8050 Days

Day: 11.9 Hours

Environment

Temp: -217 °C

Axial Tilt: 40 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 49,845,474 km

• M1: 175,478 km (0.059 R)
• M2: 655,687 km (0.113 R)
• M3: 1,227,600 km (0.083 R)
• M4: 1,860,549 km (0.112 R)
• M5: 2,522,818 km (0.119 R)
• M6: 3,124,800 km (0.065 R)
• M7: 4,512,021 km (0.106 R)
• M8: 6,009,945 km (0.085 R)
• M9: 7,019,132 km (0.052 R)
• M10: 7,506,821 km (0.111 R)
• M11: 9,919,685 km (0.114 R)
• M12: 11,176,607 km (0.114 R)
• M13: 12,374,736 km (0.112 R)
• M14: 12,921,666 km (0.087 R)
• M15: 14,123,086 km (0.076 R)
• M16: 15,273,045 km (0.091 R)
• M17: 17,080,337 km (0.077 R)
• M18: 18,105,381 km (0.094 R)
• M19: 18,597,558 km (0.118 R)
• M20: 20,202,893 km (0.097 R)
• M21: 36,073,133 km (0.032 R)
• M22: 36,517,588 km (0.066 R)
• M23: 36,965,783 km (0.104 R)
• M24: 38,679,427 km (0.092 R)

Planet 8 - Ice Giant

Semi-Major Axis: 6.47 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 660.9

Radius: 7.4

Gravity: 12.07 G

Time & Orbit

Eccentricity (e): 0.192

Orbit Range: 5.23 AU - 7.71 AU

Year: 10796 Days

Day: 17 Hours

Environment

Temp: -231 °C

Axial Tilt: 38.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (35)

Outer Limit: 49,845,474 km

• M1: 92,451 km (0.12 R)
• M2: 460,911 km (0.056 R)
• M3: 850,913 km (0.082 R)
• M4: 1,435,392 km (0.117 R)
• M5: 2,317,869 km (0.108 R)
• M6: 2,551,392 km (0.118 R)
• M7: 2,953,511 km (0.076 R)
• M8: 3,300,129 km (0.071 R)
• M9: 3,725,735 km (0.103 R)
• M10: 4,388,304 km (0.108 R)
• M11: 4,840,688 km (0.12 R)
• M12: 5,126,869 km (0.071 R)
• M13: 5,909,714 km (0.088 R)
• M14: 7,168,730 km (0.079 R)
• M15: 8,146,053 km (0.108 R)
• M16: 9,699,477 km (0.087 R)
• M17: 10,052,678 km (0.114 R)
• M18: 10,519,573 km (0.037 R)
• M19: 12,592,102 km (0.116 R)
• M20: 12,891,597 km (0.106 R)
• M21: 17,230,683 km (0.106 R)
• M22: 19,606,447 km (0.102 R)
• M23: 23,521,423 km (0.054 R)
• M24: 24,529,413 km (0.05 R)
• M25: 25,185,550 km (0.086 R)
• M26: 35,403,682 km (0.114 R)
• M27: 35,761,072 km (0.077 R)
• M28: 37,092,493 km (0.069 R)
• M29: 39,853,920 km (0.101 R)
• M30: 42,749,387 km (0.088 R)
• M31: 44,524,665 km (0.099 R)
• M32: 44,941,145 km (0.12 R)
• M33: 45,360,318 km (0.105 R)
• M34: 46,490,829 km (0.09 R)
• M35: 47,930,260 km (0.033 R)

Kuiper Belt

Range: 30 - 60 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 515 - 11,585 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit