🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.28 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.56 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.51

Radius: 1.83

Gravity: 1.35 G

Time & Orbit

Eccentricity (e): 0.168

Orbit Range: 0.47 AU - 0.65 AU

Year: 266 Days

Day: 30.4 Hours

Environment

Temp: -115 °C

Axial Tilt: 49.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.71 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 414.7

Radius: 8.4

Gravity: 5.88 G

Time & Orbit

Eccentricity (e): 0.185

Orbit Range: 0.58 AU - 0.84 AU

Year: 380 Days

Day: 12.5 Hours

Environment

Temp: -134 °C

Axial Tilt: 21.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 74,968,864 km

• M1: 104,569 km (0.107 R)
• M2: 413,339 km (0.072 R)
• M3: 798,553 km (0.068 R)
• M4: 1,214,436 km (0.098 R)
• M5: 1,507,498 km (0.092 R)
• M6: 1,942,828 km (0.097 R)
• M7: 2,459,987 km (0.036 R)
• M8: 2,789,402 km (0.072 R)
• M9: 3,086,354 km (0.038 R)
• M10: 3,674,722 km (0.114 R)
• M11: 4,182,308 km (0.05 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.99 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 906.9

Radius: 10.6

Gravity: 8.07 G

Time & Orbit

Eccentricity (e): 0.138

Orbit Range: 0.85 AU - 1.13 AU

Year: 626 Days

Day: 14.9 Hours

Environment

Temp: -149 °C

Axial Tilt: 37.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 74,968,864 km

• M1: 132,843 km (0.114 R)
• M2: 623,823 km (0.113 R)
• M3: 974,481 km (0.069 R)
• M4: 1,375,702 km (0.098 R)
• M5: 1,784,104 km (0.118 R)
• M6: 2,194,002 km (0.115 R)
• M7: 3,469,025 km (0.083 R)
• M8: 3,993,515 km (0.084 R)
• M9: 4,735,521 km (0.084 R)
• M10: 5,585,536 km (0.119 R)
• M11: 5,988,253 km (0.105 R)
• M12: 6,328,289 km (0.037 R)
• M13: 7,291,550 km (0.072 R)
• M14: 8,178,815 km (0.106 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.15 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 399.5

Radius: 13.8

Gravity: 2.1 G

Time & Orbit

Eccentricity (e): 0.156

Orbit Range: 0.97 AU - 1.33 AU

Year: 784 Days

Day: 12.5 Hours

Environment

Temp: -166 °C

Axial Tilt: 24.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 74,968,864 km

• M1: 171,738 km (0.05 R)
• M2: 828,922 km (0.056 R)
• M3: 1,423,125 km (0.087 R)
• M4: 2,185,026 km (0.104 R)
• M5: 2,703,682 km (0.089 R)
• M6: 3,304,467 km (0.092 R)
• M7: 4,253,666 km (0.093 R)
• M8: 4,906,062 km (0.077 R)
• M9: 5,500,115 km (0.101 R)
• M10: 5,972,097 km (0.06 R)
• M11: 6,812,537 km (0.063 R)

Asteroid Belt

Center: 1.54 AU

Composition

Type: Outer System (Icy)

A dense region of planetesimals and debris.

Boundary

Planet 5 - Gas Giant

Semi-Major Axis: 1.93 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 958.7

Radius: 12.1

Gravity: 6.55 G

Time & Orbit

Eccentricity (e): 0.221

Orbit Range: 1.5 AU - 2.36 AU

Year: 1705 Days

Day: 5.3 Hours

Environment

Temp: -192 °C

Axial Tilt: 38.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 74,968,864 km

• M1: 150,495 km (0.055 R)
• M2: 582,684 km (0.097 R)
• M3: 1,097,151 km (0.109 R)
• M4: 1,729,950 km (0.111 R)
• M5: 2,167,823 km (0.036 R)
• M6: 3,003,626 km (0.057 R)
• M7: 3,785,574 km (0.101 R)
• M8: 5,469,897 km (0.067 R)
• M9: 6,070,981 km (0.087 R)
• M10: 7,236,199 km (0.113 R)
• M11: 7,961,599 km (0.12 R)
• M12: 8,576,446 km (0.116 R)
• M13: 8,992,777 km (0.074 R)
• M14: 15,104,299 km (0.058 R)
• M15: 15,808,007 km (0.095 R)

Planet 6 - Gas Giant

Semi-Major Axis: 5.88 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 636.3

Radius: 10.4

Gravity: 5.88 G

Time & Orbit

Eccentricity (e): 0.191

Orbit Range: 4.76 AU - 7 AU

Year: 9066 Days

Day: 10 Hours

Environment

Temp: -215 °C

Axial Tilt: 39.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (28)

Outer Limit: 74,968,864 km

• M1: 129,552 km (0.109 R)
• M2: 681,867 km (0.073 R)
• M3: 1,018,014 km (0.073 R)
• M4: 1,344,436 km (0.104 R)
• M5: 2,066,994 km (0.05 R)
• M6: 2,396,109 km (0.026 R)
• M7: 2,862,406 km (0.09 R)
• M8: 3,650,786 km (0.093 R)
• M9: 5,363,084 km (0.117 R)
• M10: 6,413,710 km (0.094 R)
• M11: 11,579,474 km (0.102 R)
• M12: 12,014,355 km (0.072 R)
• M13: 12,858,835 km (0.119 R)
• M14: 13,802,947 km (0.062 R)
• M15: 14,666,276 km (0.103 R)
• M16: 18,409,364 km (0.095 R)
• M17: 19,152,417 km (0.055 R)
• M18: 21,097,339 km (0.097 R)
• M19: 23,861,758 km (0.074 R)
• M20: 24,212,565 km (0.054 R)
• M21: 29,692,933 km (0.064 R)
• M22: 31,025,551 km (0.109 R)
• M23: 33,153,132 km (0.102 R)
• M24: 33,810,016 km (0.115 R)
• M25: 35,262,911 km (0.113 R)
• M26: 37,224,887 km (0.091 R)
• M27: 37,934,579 km (0.098 R)
• M28: 39,137,197 km (0.068 R)

Planet 7 - Ice Giant

Semi-Major Axis: 6.09 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 283.3

Radius: 5.6

Gravity: 9.03 G

Time & Orbit

Eccentricity (e): 0.111

Orbit Range: 5.41 AU - 6.77 AU

Year: 9556 Days

Day: 24.1 Hours

Environment

Temp: -220 °C

Axial Tilt: 39.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 74,968,864 km

• M1: 69,713 km (0.105 R)
• M2: 322,084 km (0.099 R)
• M3: 663,467 km (0.093 R)
• M4: 948,301 km (0.095 R)
• M5: 1,323,492 km (0.03 R)
• M6: 1,669,512 km (0.101 R)
• M7: 1,849,628 km (0.117 R)
• M8: 2,686,628 km (0.038 R)
• M9: 3,457,207 km (0.1 R)
• M10: 4,137,578 km (0.09 R)
• M11: 4,417,775 km (0.117 R)
• M12: 6,781,122 km (0.066 R)
• M13: 7,170,974 km (0.045 R)
• M14: 8,191,231 km (0.078 R)
• M15: 8,633,443 km (0.026 R)
• M16: 13,083,231 km (0.07 R)
• M17: 26,125,623 km (0.085 R)
• M18: 27,346,940 km (0.041 R)
• M19: 29,156,775 km (0.041 R)
• M20: 31,724,622 km (0.059 R)
• M21: 33,416,574 km (0.05 R)
• M22: 34,439,375 km (0.119 R)

Planet 8 - Ice Giant

Semi-Major Axis: 9.74 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 701.6

Radius: 5.9

Gravity: 20.16 G

Time & Orbit

Eccentricity (e): 0.224

Orbit Range: 7.56 AU - 11.92 AU

Year: 19327 Days

Day: 23.8 Hours

Environment

Temp: -238 °C

Axial Tilt: 31 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (32)

Outer Limit: 74,968,864 km

• M1: 73,602 km (0.095 R)
• M2: 326,123 km (0.061 R)
• M3: 517,459 km (0.077 R)
• M4: 1,315,264 km (0.091 R)
• M5: 4,380,824 km (0.081 R)
• M6: 5,011,977 km (0.066 R)
• M7: 5,822,798 km (0.073 R)
• M8: 6,111,522 km (0.095 R)
• M9: 6,584,700 km (0.087 R)
• M10: 7,081,814 km (0.117 R)
• M11: 8,253,165 km (0.098 R)
• M12: 9,047,530 km (0.059 R)
• M13: 11,286,860 km (0.096 R)
• M14: 12,197,313 km (0.116 R)
• M15: 17,665,265 km (0.041 R)
• M16: 18,358,351 km (0.111 R)
• M17: 20,358,026 km (0.091 R)
• M18: 20,546,819 km (0.106 R)
• M19: 24,999,599 km (0.117 R)
• M20: 27,795,584 km (0.097 R)
• M21: 28,261,581 km (0.086 R)
• M22: 30,422,821 km (0.092 R)
• M23: 32,178,203 km (0.084 R)
• M24: 34,398,983 km (0.093 R)
• M25: 36,999,742 km (0.063 R)
• M26: 37,705,395 km (0.1 R)
• M27: 41,066,859 km (0.09 R)
• M28: 41,368,299 km (0.119 R)
• M29: 47,214,285 km (0.079 R)
• M30: 47,877,452 km (0.117 R)
• M31: 60,122,038 km (0.067 R)
• M32: 74,968,879 km (0.085 R)

Kuiper Belt

Range: 30 - 54 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 456 - 13,096 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit