🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.3 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.6 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.21

Radius: 1.59

Gravity: 1.27 G

Time & Orbit

Eccentricity (e): 0.081

Orbit Range: 0.55 AU - 0.65 AU

Year: 300 Days

Day: 35.9 Hours

Environment

Temp: -118 °C

Axial Tilt: 48.9 °

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: 659.6

Radius: 8.4

Gravity: 9.35 G

Time & Orbit

Eccentricity (e): 0.143

Orbit Range: 0.65 AU - 0.87 AU

Year: 428 Days

Day: 13.5 Hours

Environment

Temp: -135 °C

Axial Tilt: 31.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 58,284,931 km

• M1: 104,419 km (0.056 R)
• M2: 390,151 km (0.086 R)
• M3: 661,522 km (0.068 R)
• M4: 999,613 km (0.097 R)
• M5: 1,446,312 km (0.114 R)
• M6: 1,776,325 km (0.12 R)
• M7: 2,037,822 km (0.037 R)
• M8: 2,352,726 km (0.079 R)
• M9: 2,865,098 km (0.092 R)
• M10: 3,296,838 km (0.095 R)
• M11: 3,608,301 km (0.086 R)
• M12: 4,180,213 km (0.113 R)
• M13: 5,277,214 km (0.091 R)
• M14: 5,604,086 km (0.048 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.73 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 397.1

Radius: 10.1

Gravity: 3.89 G

Time & Orbit

Eccentricity (e): 0.019

Orbit Range: 1.7 AU - 1.76 AU

Year: 1469 Days

Day: 5.8 Hours

Environment

Temp: -194 °C

Axial Tilt: 18.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 58,284,931 km

• M1: 125,812 km (0.119 R)
• M2: 613,650 km (0.107 R)
• M3: 1,037,461 km (0.083 R)
• M4: 1,476,381 km (0.1 R)
• M5: 1,896,901 km (0.097 R)
• M6: 2,419,895 km (0.093 R)
• M7: 2,863,752 km (0.091 R)
• M8: 3,217,401 km (0.112 R)
• M9: 3,819,234 km (0.051 R)
• M10: 4,147,302 km (0.108 R)
• M11: 4,936,431 km (0.112 R)
• M12: 6,326,195 km (0.063 R)
• M13: 7,521,781 km (0.108 R)
• M14: 8,253,913 km (0.089 R)
• M15: 9,829,627 km (0.043 R)
• M16: 10,417,846 km (0.084 R)
• M17: 10,964,028 km (0.083 R)

Planet 4 - Gas Giant

Semi-Major Axis: 3.51 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 389

Radius: 13

Gravity: 2.3 G

Time & Orbit

Eccentricity (e): 0.236

Orbit Range: 2.68 AU - 4.34 AU

Year: 4246 Days

Day: 9.3 Hours

Environment

Temp: -202 °C

Axial Tilt: 9.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 58,284,931 km

• M1: 165,605 km (0.065 R)
• M2: 571,314 km (0.072 R)
• M3: 1,075,758 km (0.083 R)
• M4: 1,565,093 km (0.076 R)
• M5: 2,927,780 km (0.115 R)
• M6: 4,415,980 km (0.075 R)
• M7: 4,994,325 km (0.029 R)
• M8: 6,417,449 km (0.094 R)
• M9: 6,887,187 km (0.071 R)
• M10: 7,830,252 km (0.1 R)
• M11: 8,333,200 km (0.036 R)
• M12: 8,929,048 km (0.119 R)
• M13: 9,441,122 km (0.101 R)
• M14: 9,895,600 km (0.116 R)
• M15: 10,645,085 km (0.11 R)
• M16: 11,474,456 km (0.037 R)
• M17: 12,707,591 km (0.111 R)
• M18: 13,309,274 km (0.082 R)
• M19: 14,027,194 km (0.085 R)
• M20: 14,569,935 km (0.08 R)
• M21: 16,662,510 km (0.086 R)
• M22: 20,291,455 km (0.098 R)
• M23: 21,242,898 km (0.11 R)

Planet 5 - Ice Giant

Semi-Major Axis: 6.33 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 34.9

Radius: 5.2

Gravity: 1.29 G

Time & Orbit

Eccentricity (e): 0.24

Orbit Range: 4.81 AU - 7.85 AU

Year: 10283 Days

Day: 18.3 Hours

Environment

Temp: -212 °C

Axial Tilt: 0.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 58,284,931 km

• M1: 65,973 km (0.096 R)
• M2: 304,731 km (0.052 R)
• M3: 718,818 km (0.063 R)
• M4: 1,000,810 km (0.083 R)
• M5: 1,797,718 km (0.025 R)
• M6: 2,022,414 km (0.083 R)
• M7: 3,529,911 km (0.115 R)
• M8: 5,018,560 km (0.11 R)
• M9: 5,939,185 km (0.098 R)
• M10: 7,433,817 km (0.117 R)
• M11: 10,604,245 km (0.063 R)
• M12: 13,390,954 km (0.094 R)
• M13: 14,434,250 km (0.12 R)
• M14: 15,825,510 km (0.091 R)
• M15: 16,477,158 km (0.038 R)

Planet 6 - Ice Giant

Semi-Major Axis: 8.56 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 89.1

Radius: 6.9

Gravity: 1.87 G

Time & Orbit

Eccentricity (e): 0.208

Orbit Range: 6.78 AU - 10.34 AU

Year: 16171 Days

Day: 24.5 Hours

Environment

Temp: -229 °C

Axial Tilt: 16.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 58,284,931 km

• M1: 203,004 km (0.094 R)
• M2: 658,979 km (0.084 R)
• M3: 1,789,939 km (0.034 R)
• M4: 2,221,678 km (0.075 R)
• M5: 4,332,953 km (0.106 R)
• M6: 4,617,787 km (0.112 R)
• M7: 5,196,282 km (0.112 R)
• M8: 7,151,227 km (0.1 R)
• M9: 12,131,639 km (0.071 R)
• M10: 15,560,423 km (0.074 R)
• M11: 16,353,291 km (0.072 R)
• M12: 17,108,910 km (0.09 R)
• M13: 26,929,711 km (0.049 R)

Planet 7 - Ice Giant

Semi-Major Axis: 9.67 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 326.7

Radius: 4.9

Gravity: 13.61 G

Time & Orbit

Eccentricity (e): 0.244

Orbit Range: 7.31 AU - 12.03 AU

Year: 19416 Days

Day: 18.8 Hours

Environment

Temp: -227 °C

Axial Tilt: 0.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (29)

Outer Limit: 58,284,931 km

• M1: 61,036 km (0.093 R)
• M2: 213,925 km (0.081 R)
• M3: 372,947 km (0.102 R)
• M4: 689,347 km (0.036 R)
• M5: 981,661 km (0.063 R)
• M6: 1,206,956 km (0.11 R)
• M7: 1,933,253 km (0.108 R)
• M8: 6,144,583 km (0.078 R)
• M9: 7,559,480 km (0.107 R)
• M10: 7,967,583 km (0.091 R)
• M11: 8,438,068 km (0.068 R)
• M12: 12,325,518 km (0.109 R)
• M13: 14,828,590 km (0.108 R)
• M14: 15,830,297 km (0.055 R)
• M15: 17,888,016 km (0.105 R)
• M16: 18,287,741 km (0.055 R)
• M17: 21,792,969 km (0.114 R)
• M18: 24,136,120 km (0.048 R)
• M19: 24,821,279 km (0.12 R)
• M20: 25,822,238 km (0.102 R)
• M21: 27,163,233 km (0.088 R)
• M22: 31,929,422 km (0.101 R)
• M23: 32,873,683 km (0.089 R)
• M24: 46,292,164 km (0.046 R)
• M25: 48,266,706 km (0.065 R)
• M26: 51,573,866 km (0.076 R)
• M27: 52,545,654 km (0.105 R)
• M28: 53,364,852 km (0.104 R)
• M29: 53,529,708 km (0.086 R)

Kuiper Belt

Range: 30 - 59 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 286 - 19,552 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit