🌌 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: 0.55 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.83

Radius: 1.52

Gravity: 1.22 G

Time & Orbit

Eccentricity (e): 0.016

Orbit Range: 0.54 AU - 0.56 AU

Year: 263 Days

Day: 26.3 Hours

Environment

Temp: -122 °C

Axial Tilt: 38.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.6 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.86

Radius: 1.52

Gravity: 1.24 G

Time & Orbit

Eccentricity (e): 0.23

Orbit Range: 0.46 AU - 0.74 AU

Year: 300 Days

Day: 43.5 Hours

Environment

Temp: -127 °C

Axial Tilt: 38.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 46,991,428 km

• M1: 35,455 km (0.116 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.83 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 916.1

Radius: 9.7

Gravity: 9.74 G

Time & Orbit

Eccentricity (e): 0.035

Orbit Range: 0.8 AU - 0.86 AU

Year: 488 Days

Day: 14.5 Hours

Environment

Temp: -155 °C

Axial Tilt: 33.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 46,991,428 km

• M1: 120,576 km (0.118 R)
• M2: 630,705 km (0.071 R)
• M3: 936,333 km (0.117 R)
• M4: 1,299,557 km (0.041 R)
• M5: 1,640,939 km (0.086 R)
• M6: 2,132,368 km (0.102 R)
• M7: 2,478,687 km (0.116 R)
• M8: 2,873,925 km (0.075 R)
• M9: 3,323,317 km (0.098 R)
• M10: 3,697,461 km (0.066 R)
• M11: 4,454,576 km (0.11 R)
• M12: 4,781,746 km (0.115 R)
• M13: 5,091,713 km (0.042 R)
• M14: 5,484,856 km (0.114 R)
• M15: 6,429,567 km (0.112 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.01 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 903.3

Radius: 13

Gravity: 5.34 G

Time & Orbit

Eccentricity (e): 0.181

Orbit Range: 0.83 AU - 1.19 AU

Year: 655 Days

Day: 14.7 Hours

Environment

Temp: -158 °C

Axial Tilt: 28.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 46,991,428 km

• M1: 161,715 km (0.12 R)
• M2: 614,398 km (0.089 R)
• M3: 1,026,391 km (0.092 R)
• M4: 1,839,904 km (0.101 R)
• M5: 2,287,800 km (0.083 R)
• M6: 3,074,087 km (0.098 R)
• M7: 3,531,108 km (0.085 R)
• M8: 4,326,071 km (0.065 R)
• M9: 4,733,127 km (0.104 R)
• M10: 5,382,681 km (0.108 R)
• M11: 5,874,260 km (0.102 R)
• M12: 6,583,353 km (0.041 R)
• M13: 7,057,728 km (0.1 R)
• M14: 8,469,184 km (0.103 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.44 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 341.5

Radius: 8.4

Gravity: 4.84 G

Time & Orbit

Eccentricity (e): 0.165

Orbit Range: 1.2 AU - 1.68 AU

Year: 1116 Days

Day: 10.5 Hours

Environment

Temp: -175 °C

Axial Tilt: 22.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 46,991,428 km

• M1: 104,419 km (0.081 R)
• M2: 381,774 km (0.116 R)
• M3: 825,930 km (0.083 R)
• M4: 1,122,283 km (0.05 R)
• M5: 1,750,594 km (0.083 R)
• M6: 2,022,414 km (0.044 R)
• M7: 2,528,054 km (0.113 R)
• M8: 2,817,227 km (0.092 R)
• M9: 3,504,480 km (0.107 R)
• M10: 3,850,500 km (0.092 R)
• M11: 4,363,471 km (0.112 R)
• M12: 4,628,109 km (0.116 R)
• M13: 4,921,172 km (0.102 R)
• M14: 5,337,502 km (0.12 R)
• M15: 5,621,439 km (0.094 R)
• M16: 6,076,666 km (0.085 R)
• M17: 6,556,127 km (0.077 R)
• M18: 6,948,821 km (0.102 R)
• M19: 7,242,033 km (0.11 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.51 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 323.4

Radius: 12.8

Gravity: 1.97 G

Time & Orbit

Eccentricity (e): 0.108

Orbit Range: 3.13 AU - 3.89 AU

Year: 4246 Days

Day: 8.9 Hours

Environment

Temp: -214 °C

Axial Tilt: 23.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 46,991,428 km

• M1: 162,912 km (0.101 R)
• M2: 628,461 km (0.109 R)
• M3: 1,419,684 km (0.068 R)
• M4: 1,834,519 km (0.035 R)
• M5: 2,728,067 km (0.085 R)
• M6: 3,509,416 km (0.082 R)
• M7: 4,747,189 km (0.105 R)
• M8: 7,969,527 km (0.099 R)
• M9: 8,951,937 km (0.104 R)
• M10: 11,403,846 km (0.106 R)
• M11: 13,146,661 km (0.059 R)
• M12: 13,749,540 km (0.104 R)
• M13: 15,110,881 km (0.096 R)
• M14: 20,586,462 km (0.105 R)

Planet 7 - Gas Giant

Semi-Major Axis: 5.66 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 695.1

Radius: 14.3

Gravity: 3.4 G

Time & Orbit

Eccentricity (e): 0.001

Orbit Range: 5.65 AU - 5.67 AU

Year: 8694 Days

Day: 11.5 Hours

Environment

Temp: -218 °C

Axial Tilt: 1.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 46,991,428 km

• M1: 177,872 km (0.063 R)
• M2: 737,817 km (0.073 R)
• M3: 1,277,117 km (0.053 R)
• M4: 2,355,718 km (0.09 R)
• M5: 2,912,222 km (0.117 R)
• M6: 3,580,027 km (0.1 R)
• M7: 4,773,070 km (0.08 R)
• M8: 5,673,200 km (0.118 R)
• M9: 7,852,243 km (0.087 R)
• M10: 16,218,504 km (0.114 R)
• M11: 17,529,579 km (0.088 R)
• M12: 19,285,410 km (0.102 R)
• M13: 22,468,403 km (0.075 R)
• M14: 23,574,231 km (0.113 R)
• M15: 24,716,111 km (0.111 R)
• M16: 25,436,874 km (0.109 R)
• M17: 26,079,098 km (0.068 R)
• M18: 27,109,977 km (0.057 R)
• M19: 30,059,897 km (0.118 R)
• M20: 31,823,207 km (0.077 R)
• M21: 41,686,793 km (0.026 R)
• M22: 43,096,005 km (0.034 R)

Planet 8 - Gas Giant

Semi-Major Axis: 5.85 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 773.3

Radius: 10.2

Gravity: 7.43 G

Time & Orbit

Eccentricity (e): 0.243

Orbit Range: 4.43 AU - 7.27 AU

Year: 9136 Days

Day: 7.3 Hours

Environment

Temp: -215 °C

Axial Tilt: 5.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (32)

Outer Limit: 46,991,428 km

• M1: 126,859 km (0.095 R)
• M2: 536,458 km (0.099 R)
• M3: 885,769 km (0.089 R)
• M4: 1,281,755 km (0.046 R)
• M5: 1,735,634 km (0.115 R)
• M6: 2,295,131 km (0.107 R)
• M7: 3,194,214 km (0.026 R)
• M8: 3,775,401 km (0.106 R)
• M9: 4,838,893 km (0.102 R)
• M10: 5,181,173 km (0.12 R)
• M11: 5,573,119 km (0.117 R)
• M12: 5,984,962 km (0.061 R)
• M13: 7,424,692 km (0.039 R)
• M14: 7,755,004 km (0.108 R)
• M15: 8,313,004 km (0.031 R)
• M16: 8,851,556 km (0.116 R)
• M17: 10,556,374 km (0.038 R)
• M18: 11,134,570 km (0.098 R)
• M19: 11,513,501 km (0.102 R)
• M20: 11,957,208 km (0.107 R)
• M21: 13,356,696 km (0.064 R)
• M22: 14,348,530 km (0.116 R)
• M23: 14,797,623 km (0.034 R)
• M24: 16,201,449 km (0.104 R)
• M25: 17,546,185 km (0.094 R)
• M26: 30,353,258 km (0.11 R)
• M27: 32,391,529 km (0.118 R)
• M28: 35,793,086 km (0.06 R)
• M29: 37,701,207 km (0.089 R)
• M30: 38,680,325 km (0.029 R)
• M31: 39,676,198 km (0.097 R)
• M32: 42,503,298 km (0.118 R)

Kuiper Belt

Range: 30 - 55 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 254 - 13,929 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit