🌌 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: 1.93

Radius: 1.3

Gravity: 1.14 G

Time & Orbit

Eccentricity (e): 0.248

Orbit Range: 0.45 AU - 0.75 AU

Year: 300 Days

Day: 31.9 Hours

Environment

Temp: -118 °C

Axial Tilt: 46.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 74,171,988 km

• M1: 429,645 km (0.081 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.84 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 559.3

Radius: 11.4

Gravity: 4.3 G

Time & Orbit

Eccentricity (e): 0.051

Orbit Range: 0.8 AU - 0.88 AU

Year: 497 Days

Day: 8.4 Hours

Environment

Temp: -158 °C

Axial Tilt: 5.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 74,171,988 km

• M1: 141,819 km (0.071 R)
• M2: 537,655 km (0.095 R)
• M3: 894,595 km (0.11 R)
• M4: 1,301,801 km (0.11 R)
• M5: 1,721,572 km (0.09 R)
• M6: 2,214,348 km (0.041 R)
• M7: 2,607,341 km (0.099 R)
• M8: 3,379,266 km (0.054 R)
• M9: 3,812,951 km (0.071 R)
• M10: 4,976,672 km (0.034 R)
• M11: 5,540,208 km (0.113 R)
• M12: 6,056,769 km (0.071 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.85 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 291.9

Radius: 14.8

Gravity: 1.33 G

Time & Orbit

Eccentricity (e): 0.162

Orbit Range: 0.71 AU - 0.99 AU

Year: 506 Days

Day: 12.4 Hours

Environment

Temp: -146 °C

Axial Tilt: 13.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 74,171,988 km

• M1: 184,005 km (0.093 R)
• M2: 756,666 km (0.084 R)
• M3: 1,257,071 km (0.085 R)
• M4: 1,778,719 km (0.083 R)
• M5: 2,352,726 km (0.087 R)
• M6: 2,959,644 km (0.057 R)
• M7: 4,231,376 km (0.056 R)
• M8: 4,877,788 km (0.11 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.67 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 512.5

Radius: 14.4

Gravity: 2.47 G

Time & Orbit

Eccentricity (e): 0.156

Orbit Range: 1.41 AU - 1.93 AU

Year: 1393 Days

Day: 13.1 Hours

Environment

Temp: -177 °C

Axial Tilt: 18.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 74,171,988 km

• M1: 179,069 km (0.105 R)
• M2: 656,136 km (0.058 R)
• M3: 1,173,595 km (0.112 R)
• M4: 1,653,505 km (0.088 R)
• M5: 2,245,314 km (0.111 R)
• M6: 2,754,695 km (0.094 R)
• M7: 3,415,469 km (0.103 R)
• M8: 4,335,945 km (0.11 R)
• M9: 5,037,708 km (0.119 R)
• M10: 5,686,514 km (0.107 R)
• M11: 7,029,454 km (0.087 R)
• M12: 7,841,621 km (0.035 R)
• M13: 8,518,851 km (0.101 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.35 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 882.7

Radius: 9.7

Gravity: 9.38 G

Time & Orbit

Eccentricity (e): 0.041

Orbit Range: 2.25 AU - 2.45 AU

Year: 2326 Days

Day: 6 Hours

Environment

Temp: -193 °C

Axial Tilt: 16.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 74,171,988 km

• M1: 120,725 km (0.114 R)
• M2: 441,912 km (0.12 R)
• M3: 925,712 km (0.081 R)
• M4: 1,329,027 km (0.099 R)
• M5: 2,066,695 km (0.104 R)
• M6: 2,877,665 km (0.085 R)
• M7: 3,490,717 km (0.075 R)
• M8: 4,147,601 km (0.034 R)
• M9: 4,839,042 km (0.109 R)
• M10: 5,580,300 km (0.115 R)
• M11: 6,177,644 km (0.12 R)
• M12: 7,227,672 km (0.099 R)
• M13: 8,492,222 km (0.104 R)
• M14: 9,282,997 km (0.118 R)
• M15: 9,605,530 km (0.11 R)
• M16: 10,852,727 km (0.091 R)
• M17: 11,251,106 km (0.06 R)
• M18: 14,366,931 km (0.089 R)
• M19: 15,289,351 km (0.089 R)
• M20: 15,790,504 km (0.087 R)
• M21: 16,667,596 km (0.081 R)
• M22: 17,468,095 km (0.043 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.35 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 25.6

Radius: 10.7

Gravity: 0.22 G

Time & Orbit

Eccentricity (e): 0.171

Orbit Range: 1.95 AU - 2.75 AU

Year: 2326 Days

Day: 9.7 Hours

Environment

Temp: -193 °C

Axial Tilt: 38.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (5)

Outer Limit: 74,171,988 km

• M1: 133,441 km (0.091 R)
• M2: 1,146,518 km (0.106 R)
• M3: 1,948,213 km (0.084 R)
• M4: 3,318,679 km (0.095 R)
• M5: 4,629,905 km (0.054 R)

Planet 7 - Gas Giant

Semi-Major Axis: 2.48 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 833.6

Radius: 8.3

Gravity: 12.1 G

Time & Orbit

Eccentricity (e): 0.062

Orbit Range: 2.33 AU - 2.63 AU

Year: 2522 Days

Day: 14.9 Hours

Environment

Temp: -198 °C

Axial Tilt: 29.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 74,171,988 km

• M1: 109,954 km (0.086 R)
• M2: 440,267 km (0.12 R)
• M3: 813,812 km (0.108 R)
• M4: 1,955,095 km (0.103 R)
• M5: 3,250,313 km (0.107 R)
• M6: 4,234,817 km (0.088 R)
• M7: 4,626,015 km (0.093 R)
• M8: 5,209,147 km (0.048 R)
• M9: 6,161,039 km (0.084 R)
• M10: 6,606,840 km (0.098 R)
• M11: 7,285,117 km (0.033 R)
• M12: 9,166,011 km (0.095 R)
• M13: 10,430,712 km (0.065 R)
• M14: 11,681,649 km (0.076 R)
• M15: 14,190,106 km (0.038 R)
• M16: 14,673,008 km (0.088 R)
• M17: 17,199,417 km (0.08 R)
• M18: 17,527,485 km (0.114 R)
• M19: 18,651,264 km (0.1 R)

Planet 8 - Gas Giant

Semi-Major Axis: 4.25 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 904.5

Radius: 10.4

Gravity: 8.36 G

Time & Orbit

Eccentricity (e): 0.203

Orbit Range: 3.39 AU - 5.11 AU

Year: 5657 Days

Day: 5.2 Hours

Environment

Temp: -221 °C

Axial Tilt: 14.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 74,171,988 km

• M1: 129,402 km (0.114 R)
• M2: 490,531 km (0.096 R)
• M3: 834,756 km (0.099 R)
• M4: 1,801,458 km (0.104 R)
• M5: 2,222,875 km (0.109 R)
• M6: 3,395,273 km (0.088 R)
• M7: 5,227,099 km (0.066 R)
• M8: 7,909,688 km (0.098 R)
• M9: 9,091,212 km (0.11 R)
• M10: 10,293,530 km (0.043 R)
• M11: 11,598,772 km (0.079 R)
• M12: 15,553,990 km (0.106 R)
• M13: 17,268,681 km (0.111 R)
• M14: 19,035,731 km (0.092 R)
• M15: 20,474,713 km (0.084 R)
• M16: 22,530,636 km (0.066 R)
• M17: 24,972,373 km (0.092 R)
• M18: 25,566,575 km (0.095 R)
• M19: 28,403,549 km (0.065 R)
• M20: 33,348,507 km (0.106 R)

Planet 9 - Ice Giant

Semi-Major Axis: 10.95 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 463.7

Radius: 7

Gravity: 9.46 G

Time & Orbit

Eccentricity (e): 0.084

Orbit Range: 10.03 AU - 11.87 AU

Year: 23396 Days

Day: 25 Hours

Environment

Temp: -231 °C

Axial Tilt: 36.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (37)

Outer Limit: 74,171,988 km

• M1: 91,404 km (0.076 R)
• M2: 470,635 km (0.119 R)
• M3: 697,724 km (0.092 R)
• M4: 1,111,213 km (0.083 R)
• M5: 3,050,600 km (0.104 R)
• M6: 3,749,072 km (0.115 R)
• M7: 4,515,612 km (0.079 R)
• M8: 5,305,937 km (0.036 R)
• M9: 7,345,255 km (0.106 R)
• M10: 8,383,165 km (0.084 R)
• M11: 9,515,322 km (0.074 R)
• M12: 10,206,315 km (0.104 R)
• M13: 11,688,082 km (0.035 R)
• M14: 12,615,738 km (0.108 R)
• M15: 13,028,030 km (0.101 R)
• M16: 13,307,778 km (0.085 R)
• M17: 15,071,686 km (0.069 R)
• M18: 15,692,667 km (0.116 R)
• M19: 17,235,919 km (0.066 R)
• M20: 18,611,770 km (0.06 R)
• M21: 19,146,134 km (0.065 R)
• M22: 27,280,817 km (0.097 R)
• M23: 33,646,356 km (0.093 R)
• M24: 34,041,145 km (0.047 R)
• M25: 35,651,417 km (0.082 R)
• M26: 35,924,582 km (0.08 R)
• M27: 38,590,416 km (0.063 R)
• M28: 42,294,908 km (0.075 R)
• M29: 43,528,642 km (0.118 R)
• M30: 43,840,853 km (0.102 R)
• M31: 44,945,184 km (0.097 R)
• M32: 51,963,269 km (0.116 R)
• M33: 57,213,556 km (0.109 R)
• M34: 62,607,906 km (0.112 R)
• M35: 66,249,118 km (0.035 R)
• M36: 68,331,670 km (0.11 R)
• M37: 69,815,232 km (0.082 R)

Kuiper Belt

Range: 30 - 52 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 225 - 17,308 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit