🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.33 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.66 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.13

Radius: 1.35

Gravity: 1.17 G

Time & Orbit

Eccentricity (e): 0.233

Orbit Range: 0.51 AU - 0.81 AU

Year: 352 Days

Day: 30 Hours

Environment

Temp: -142 °C

Axial Tilt: 26.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.99 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 816.2

Radius: 10.5

Gravity: 7.4 G

Time & Orbit

Eccentricity (e): 0.187

Orbit Range: 0.8 AU - 1.18 AU

Year: 646 Days

Day: 13.5 Hours

Environment

Temp: -149 °C

Axial Tilt: 11 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 85,655,429 km

• M1: 130,599 km (0.109 R)
• M2: 496,964 km (0.068 R)
• M3: 1,026,690 km (0.066 R)
• M4: 1,669,363 km (0.092 R)
• M5: 2,077,615 km (0.094 R)
• M6: 2,787,308 km (0.079 R)
• M7: 3,136,170 km (0.108 R)
• M8: 3,665,447 km (0.098 R)
• M9: 4,554,208 km (0.09 R)
• M10: 5,110,712 km (0.051 R)
• M11: 5,580,749 km (0.115 R)
• M12: 6,319,463 km (0.047 R)
• M13: 8,015,005 km (0.099 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.02 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 71.8

Radius: 12.6

Gravity: 0.45 G

Time & Orbit

Eccentricity (e): 0.208

Orbit Range: 0.81 AU - 1.23 AU

Year: 676 Days

Day: 14.1 Hours

Environment

Temp: -156 °C

Axial Tilt: 21.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 85,655,429 km

• M1: 156,928 km (0.058 R)
• M2: 876,045 km (0.114 R)
• M3: 1,276,519 km (0.065 R)
• M4: 1,672,504 km (0.102 R)
• M5: 2,174,106 km (0.109 R)
• M6: 2,864,201 km (0.117 R)
• M7: 3,590,349 km (0.067 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.27 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 470.3

Radius: 11.4

Gravity: 3.62 G

Time & Orbit

Eccentricity (e): 0.141

Orbit Range: 1.09 AU - 1.45 AU

Year: 939 Days

Day: 10.2 Hours

Environment

Temp: -161 °C

Axial Tilt: 27.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 85,655,429 km

• M1: 142,716 km (0.079 R)
• M2: 712,684 km (0.063 R)
• M3: 1,708,258 km (0.118 R)
• M4: 2,063,703 km (0.092 R)
• M5: 2,545,557 km (0.116 R)
• M6: 3,101,912 km (0.097 R)
• M7: 3,581,822 km (0.069 R)
• M8: 4,251,272 km (0.074 R)
• M9: 5,055,361 km (0.112 R)
• M10: 5,722,867 km (0.114 R)
• M11: 6,220,279 km (0.051 R)
• M12: 7,324,910 km (0.102 R)
• M13: 7,864,061 km (0.055 R)
• M14: 8,658,126 km (0.107 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.9 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 243

Radius: 12.7

Gravity: 1.51 G

Time & Orbit

Eccentricity (e): 0.099

Orbit Range: 3.51 AU - 4.29 AU

Year: 5052 Days

Day: 5.1 Hours

Environment

Temp: -215 °C

Axial Tilt: 1.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 85,655,429 km

• M1: 157,975 km (0.052 R)
• M2: 583,132 km (0.105 R)
• M3: 1,330,374 km (0.099 R)
• M4: 1,868,627 km (0.026 R)
• M5: 2,362,150 km (0.028 R)
• M6: 3,009,012 km (0.069 R)
• M7: 3,732,317 km (0.081 R)
• M8: 5,324,637 km (0.081 R)
• M9: 5,918,241 km (0.109 R)
• M10: 12,419,615 km (0.047 R)
• M11: 20,890,295 km (0.105 R)

Asteroid Belt

Center: 4.33 AU

Composition

Type: Outer System (Icy)

A dense region of planetesimals and debris.

Boundary

Planet 6 - Gas Giant

Semi-Major Axis: 4.75 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 403.6

Radius: 14.4

Gravity: 1.95 G

Time & Orbit

Eccentricity (e): 0.059

Orbit Range: 4.47 AU - 5.03 AU

Year: 6791 Days

Day: 13.5 Hours

Environment

Temp: -215 °C

Axial Tilt: 19.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 85,655,429 km

• M1: 179,069 km (0.09 R)
• M2: 971,489 km (0.037 R)
• M3: 1,491,192 km (0.092 R)
• M4: 2,862,705 km (0.058 R)
• M5: 3,788,416 km (0.044 R)
• M6: 4,444,702 km (0.099 R)
• M7: 4,905,913 km (0.04 R)
• M8: 5,687,561 km (0.116 R)
• M9: 6,201,729 km (0.11 R)
• M10: 7,679,158 km (0.039 R)
• M11: 9,842,194 km (0.074 R)
• M12: 10,857,813 km (0.091 R)
• M13: 13,149,503 km (0.104 R)
• M14: 15,630,584 km (0.032 R)
• M15: 16,889,300 km (0.087 R)
• M16: 17,765,196 km (0.1 R)
• M17: 18,344,289 km (0.103 R)
• M18: 18,869,527 km (0.106 R)
• M19: 19,881,407 km (0.11 R)
• M20: 22,532,132 km (0.119 R)
• M21: 22,983,170 km (0.065 R)
• M22: 26,811,978 km (0.103 R)
• M23: 27,831,936 km (0.104 R)
• M24: 28,965,738 km (0.111 R)

Planet 7 - Ice Giant

Semi-Major Axis: 8.09 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 324.8

Radius: 6.8

Gravity: 7.02 G

Time & Orbit

Eccentricity (e): 0.225

Orbit Range: 6.27 AU - 9.91 AU

Year: 15095 Days

Day: 23.1 Hours

Environment

Temp: -223 °C

Axial Tilt: 38.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 85,655,429 km

• M1: 121,623 km (0.109 R)
• M2: 352,303 km (0.104 R)
• M3: 833,559 km (0.117 R)
• M4: 1,980,526 km (0.055 R)
• M5: 2,736,444 km (0.076 R)
• M6: 3,346,355 km (0.057 R)
• M7: 7,068,350 km (0.118 R)
• M8: 7,312,045 km (0.025 R)
• M9: 8,076,639 km (0.093 R)
• M10: 8,753,570 km (0.12 R)
• M11: 9,082,236 km (0.102 R)
• M12: 11,900,062 km (0.082 R)
• M13: 13,321,242 km (0.049 R)
• M14: 13,568,676 km (0.12 R)
• M15: 14,720,281 km (0.07 R)
• M16: 17,658,084 km (0.064 R)
• M17: 21,553,313 km (0.109 R)
• M18: 26,469,398 km (0.101 R)
• M19: 38,443,062 km (0.082 R)
• M20: 47,438,233 km (0.051 R)

Planet 8 - Ice Giant

Semi-Major Axis: 10.47 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 791.4

Radius: 5.1

Gravity: 30.43 G

Time & Orbit

Eccentricity (e): 0.161

Orbit Range: 8.78 AU - 12.16 AU

Year: 22224 Days

Day: 21.9 Hours

Environment

Temp: -241 °C

Axial Tilt: 36.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (33)

Outer Limit: 85,655,429 km

• M1: 64,327 km (0.071 R)
• M2: 335,249 km (0.113 R)
• M3: 1,012,628 km (0.103 R)
• M4: 3,925,149 km (0.111 R)
• M5: 5,791,532 km (0.091 R)
• M6: 6,092,972 km (0.1 R)
• M7: 7,060,272 km (0.102 R)
• M8: 7,605,855 km (0.026 R)
• M9: 9,707,855 km (0.032 R)
• M10: 11,152,222 km (0.043 R)
• M11: 13,995,330 km (0.038 R)
• M12: 15,337,671 km (0.115 R)
• M13: 19,111,427 km (0.08 R)
• M14: 20,070,050 km (0.112 R)
• M15: 23,137,854 km (0.1 R)
• M16: 23,896,165 km (0.117 R)
• M17: 27,695,054 km (0.046 R)
• M18: 28,059,025 km (0.088 R)
• M19: 29,927,652 km (0.114 R)
• M20: 32,277,386 km (0.088 R)
• M21: 34,466,901 km (0.118 R)
• M22: 35,884,490 km (0.115 R)
• M23: 43,069,975 km (0.1 R)
• M24: 43,232,438 km (0.059 R)
• M25: 45,888,249 km (0.069 R)
• M26: 49,180,898 km (0.082 R)
• M27: 50,613,148 km (0.117 R)
• M28: 50,794,162 km (0.104 R)
• M29: 51,339,596 km (0.109 R)
• M30: 52,073,074 km (0.1 R)
• M31: 53,748,570 km (0.082 R)
• M32: 63,295,607 km (0.118 R)
• M33: 75,553,357 km (0.111 R)

Kuiper Belt

Range: 30 - 50 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 270 - 19,940 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit