🌌 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: 1.6

Radius: 1.21

Gravity: 1.09 G

Time & Orbit

Eccentricity (e): 0.012

Orbit Range: 0.53 AU - 0.55 AU

Year: 256 Days

Day: 31.9 Hours

Environment

Temp: -120 °C

Axial Tilt: 11.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 51,754,053 km

• M1: 52,210 km (0.058 R)
• M2: 457,021 km (0.107 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.84 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 520.6

Radius: 8.5

Gravity: 7.21 G

Time & Orbit

Eccentricity (e): 0.11

Orbit Range: 0.75 AU - 0.93 AU

Year: 497 Days

Day: 10.1 Hours

Environment

Temp: -146 °C

Axial Tilt: 39.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 51,754,053 km

• M1: 105,915 km (0.045 R)
• M2: 497,263 km (0.118 R)
• M3: 780,751 km (0.112 R)
• M4: 1,876,107 km (0.099 R)
• M5: 2,767,561 km (0.116 R)
• M6: 3,343,363 km (0.106 R)
• M7: 3,685,194 km (0.084 R)
• M8: 3,996,657 km (0.084 R)
• M9: 4,368,108 km (0.097 R)
• M10: 5,690,105 km (0.086 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.83 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 283.2

Radius: 11

Gravity: 2.34 G

Time & Orbit

Eccentricity (e): 0.011

Orbit Range: 1.81 AU - 1.85 AU

Year: 1598 Days

Day: 12.1 Hours

Environment

Temp: -186 °C

Axial Tilt: 0.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 51,754,053 km

• M1: 136,882 km (0.089 R)
• M2: 534,064 km (0.1 R)
• M3: 1,021,005 km (0.116 R)
• M4: 1,521,859 km (0.109 R)
• M5: 6,762,273 km (0.098 R)
• M6: 9,581,295 km (0.1 R)
• M7: 10,026,797 km (0.109 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.84 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 882.3

Radius: 12.8

Gravity: 5.39 G

Time & Orbit

Eccentricity (e): 0.247

Orbit Range: 2.14 AU - 3.54 AU

Year: 3090 Days

Day: 8.5 Hours

Environment

Temp: -202 °C

Axial Tilt: 14.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 51,754,053 km

• M1: 190,737 km (0.104 R)
• M2: 641,027 km (0.11 R)
• M3: 1,301,202 km (0.041 R)
• M4: 1,926,073 km (0.076 R)
• M5: 2,331,333 km (0.079 R)
• M6: 2,794,339 km (0.096 R)
• M7: 3,585,562 km (0.115 R)
• M8: 4,273,114 km (0.094 R)
• M9: 4,755,417 km (0.075 R)
• M10: 6,279,520 km (0.073 R)
• M11: 6,722,180 km (0.113 R)
• M12: 8,385,858 km (0.077 R)
• M13: 9,182,616 km (0.091 R)
• M14: 10,635,960 km (0.101 R)
• M15: 11,439,300 km (0.071 R)
• M16: 12,056,840 km (0.067 R)
• M17: 12,930,492 km (0.092 R)
• M18: 14,855,517 km (0.08 R)
• M19: 17,134,940 km (0.117 R)
• M20: 17,710,443 km (0.088 R)
• M21: 18,298,662 km (0.111 R)
• M22: 18,778,572 km (0.112 R)
• M23: 21,770,230 km (0.118 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.89 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 732.8

Radius: 12

Gravity: 5.09 G

Time & Orbit

Eccentricity (e): 0.23

Orbit Range: 3 AU - 4.78 AU

Year: 4954 Days

Day: 14.8 Hours

Environment

Temp: -209 °C

Axial Tilt: 21.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 51,754,053 km

• M1: 149,299 km (0.085 R)
• M2: 540,647 km (0.086 R)
• M3: 1,318,256 km (0.095 R)
• M4: 1,772,735 km (0.064 R)
• M5: 2,178,145 km (0.109 R)
• M6: 2,715,650 km (0.109 R)
• M7: 3,200,347 km (0.115 R)
• M8: 3,633,732 km (0.026 R)
• M9: 4,369,903 km (0.106 R)
• M10: 4,748,087 km (0.109 R)
• M11: 5,512,981 km (0.033 R)
• M12: 5,986,009 km (0.052 R)
• M13: 6,812,687 km (0.092 R)
• M14: 7,428,432 km (0.103 R)
• M15: 7,969,677 km (0.066 R)
• M16: 9,335,356 km (0.062 R)
• M17: 12,880,377 km (0.03 R)
• M18: 13,662,923 km (0.064 R)
• M19: 14,366,332 km (0.108 R)
• M20: 16,320,828 km (0.116 R)
• M21: 17,361,880 km (0.083 R)
• M22: 21,176,925 km (0.074 R)
• M23: 21,899,333 km (0.088 R)
• M24: 22,563,697 km (0.043 R)
• M25: 27,087,088 km (0.051 R)

Planet 6 - Ice Giant

Semi-Major Axis: 8.12 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 386.3

Radius: 5.6

Gravity: 12.32 G

Time & Orbit

Eccentricity (e): 0.05

Orbit Range: 7.71 AU - 8.53 AU

Year: 14940 Days

Day: 22.4 Hours

Environment

Temp: -221 °C

Axial Tilt: 49.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 51,754,053 km

• M1: 73,153 km (0.059 R)
• M2: 458,817 km (0.112 R)
• M3: 635,193 km (0.118 R)
• M4: 829,670 km (0.065 R)
• M5: 3,817,438 km (0.062 R)
• M6: 4,624,070 km (0.092 R)
• M7: 5,857,205 km (0.077 R)
• M8: 9,441,122 km (0.105 R)
• M9: 9,793,125 km (0.097 R)
• M10: 10,101,895 km (0.085 R)
• M11: 13,682,072 km (0.067 R)
• M12: 14,460,878 km (0.111 R)
• M13: 17,048,473 km (0.055 R)
• M14: 19,765,469 km (0.049 R)
• M15: 23,665,336 km (0.107 R)
• M16: 29,622,174 km (0.11 R)
• M17: 32,829,253 km (0.05 R)
• M18: 33,520,544 km (0.11 R)
• M19: 37,123,160 km (0.11 R)
• M20: 44,522,720 km (0.097 R)
• M21: 45,939,711 km (0.101 R)
• M22: 48,565,902 km (0.099 R)

Kuiper Belt

Range: 30 - 47 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 521 - 17,491 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit