🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.29 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.57 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.55

Radius: 0.79

Gravity: 0.88 G

Time & Orbit

Eccentricity (e): 0.216

Orbit Range: 0.45 AU - 0.69 AU

Year: 278 Days

Day: 23.1 Hours

Environment

Temp: -134 °C

Axial Tilt: 10.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 17,688,163 km

• M1: 20,196 km (0.12 R)
• M2: 368,011 km (0.116 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.79 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 367.9

Radius: 10.5

Gravity: 3.34 G

Time & Orbit

Eccentricity (e): 0.2

Orbit Range: 0.63 AU - 0.95 AU

Year: 453 Days

Day: 12 Hours

Environment

Temp: -138 °C

Axial Tilt: 26.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 17,688,163 km

• M1: 130,599 km (0.116 R)
• M2: 684,261 km (0.08 R)
• M3: 1,081,443 km (0.059 R)
• M4: 1,443,021 km (0.081 R)
• M5: 1,849,628 km (0.087 R)
• M6: 2,189,963 km (0.118 R)
• M7: 2,618,711 km (0.118 R)
• M8: 2,948,724 km (0.118 R)
• M9: 3,328,702 km (0.081 R)
• M10: 3,741,443 km (0.079 R)
• M11: 4,111,249 km (0.105 R)
• M12: 4,451,584 km (0.117 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.9 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 402.5

Radius: 9.6

Gravity: 4.37 G

Time & Orbit

Eccentricity (e): 0.237

Orbit Range: 0.69 AU - 1.11 AU

Year: 551 Days

Day: 14.5 Hours

Environment

Temp: -143 °C

Axial Tilt: 3.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 17,688,163 km

• M1: 119,379 km (0.079 R)
• M2: 459,864 km (0.062 R)
• M3: 1,093,112 km (0.089 R)
• M4: 1,470,397 km (0.103 R)
• M5: 1,786,947 km (0.057 R)
• M6: 2,218,985 km (0.096 R)
• M7: 2,619,758 km (0.091 R)
• M8: 3,214,260 km (0.111 R)
• M9: 3,605,159 km (0.108 R)
• M10: 4,511,573 km (0.025 R)
• M11: 4,880,631 km (0.103 R)
• M12: 5,366,375 km (0.108 R)
• M13: 5,713,442 km (0.086 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.97 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 750.2

Radius: 13.1

Gravity: 4.37 G

Time & Orbit

Eccentricity (e): 0.018

Orbit Range: 0.95 AU - 0.99 AU

Year: 617 Days

Day: 5.6 Hours

Environment

Temp: -148 °C

Axial Tilt: 41.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 17,688,163 km

• M1: 163,062 km (0.109 R)
• M2: 624,721 km (0.083 R)
• M3: 1,613,413 km (0.058 R)
• M4: 2,730,610 km (0.089 R)
• M5: 5,667,216 km (0.103 R)
• M6: 6,100,003 km (0.067 R)
• M7: 6,843,055 km (0.107 R)
• M8: 7,312,942 km (0.094 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.07 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 858.8

Radius: 11.6

Gravity: 6.38 G

Time & Orbit

Eccentricity (e): 0.116

Orbit Range: 0.95 AU - 1.19 AU

Year: 715 Days

Day: 7.6 Hours

Environment

Temp: -158 °C

Axial Tilt: 45.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 17,688,163 km

• M1: 144,811 km (0.084 R)
• M2: 563,086 km (0.07 R)
• M3: 991,086 km (0.079 R)
• M4: 1,748,949 km (0.036 R)
• M5: 2,171,114 km (0.065 R)
• M6: 2,707,721 km (0.053 R)
• M7: 3,186,584 km (0.049 R)
• M8: 3,692,674 km (0.094 R)
• M9: 4,079,983 km (0.081 R)
• M10: 4,780,550 km (0.092 R)
• M11: 5,151,103 km (0.104 R)
• M12: 5,752,786 km (0.108 R)
• M13: 6,379,900 km (0.095 R)
• M14: 7,988,676 km (0.039 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.73 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 489.3

Radius: 13.7

Gravity: 2.61 G

Time & Orbit

Eccentricity (e): 0.064

Orbit Range: 1.62 AU - 1.84 AU

Year: 1469 Days

Day: 9.4 Hours

Environment

Temp: -187 °C

Axial Tilt: 20.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 17,688,163 km

• M1: 170,542 km (0.109 R)
• M2: 640,728 km (0.069 R)
• M3: 1,322,595 km (0.111 R)
• M4: 1,823,897 km (0.117 R)
• M5: 2,464,924 km (0.066 R)
• M6: 2,959,495 km (0.112 R)
• M7: 3,505,377 km (0.067 R)
• M8: 4,221,353 km (0.042 R)
• M9: 4,955,130 km (0.101 R)
• M10: 5,708,206 km (0.103 R)
• M11: 8,021,587 km (0.112 R)
• M12: 9,297,807 km (0.087 R)
• M13: 10,348,881 km (0.078 R)
• M14: 10,804,108 km (0.096 R)

Planet 7 - Gas Giant

Semi-Major Axis: 1.98 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 559.7

Radius: 13.9

Gravity: 2.9 G

Time & Orbit

Eccentricity (e): 0.19

Orbit Range: 1.6 AU - 2.36 AU

Year: 1799 Days

Day: 11.7 Hours

Environment

Temp: -193 °C

Axial Tilt: 4.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 17,688,163 km

• M1: 173,833 km (0.11 R)
• M2: 617,989 km (0.116 R)
• M3: 1,096,253 km (0.046 R)
• M4: 1,537,118 km (0.103 R)
• M5: 2,443,980 km (0.106 R)
• M6: 3,486,378 km (0.086 R)
• M7: 4,065,023 km (0.112 R)
• M8: 4,608,662 km (0.091 R)
• M9: 5,095,004 km (0.099 R)
• M10: 5,728,701 km (0.109 R)
• M11: 6,816,128 km (0.054 R)
• M12: 7,422,897 km (0.06 R)
• M13: 8,065,569 km (0.076 R)
• M14: 8,684,456 km (0.068 R)
• M15: 12,654,035 km (0.103 R)
• M16: 13,127,961 km (0.111 R)

Planet 8 - Gas Giant

Semi-Major Axis: 4.68 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 874.1

Radius: 13.6

Gravity: 4.73 G

Time & Orbit

Eccentricity (e): 0.135

Orbit Range: 4.05 AU - 5.31 AU

Year: 6537 Days

Day: 8.6 Hours

Environment

Temp: -224 °C

Axial Tilt: 175.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (31)

Outer Limit: 17,688,163 km

• M1: 169,195 km (0.033 R)
• M2: 886,517 km (0.037 R)
• M3: 1,784,254 km (0.053 R)
• M4: 3,312,695 km (0.064 R)
• M5: 4,089,557 km (0.104 R)
• M6: 5,013,773 km (0.066 R)
• M7: 5,908,518 km (0.101 R)
• M8: 6,481,029 km (0.066 R)
• M9: 8,258,850 km (0.078 R)
• M10: 9,062,938 km (0.039 R)
• M11: 10,778,527 km (0.045 R)
• M12: 12,160,811 km (0.044 R)
• M13: 12,756,659 km (0.105 R)
• M14: 13,485,949 km (0.059 R)
• M15: 13,948,356 km (0.056 R)
• M16: 15,027,854 km (0.09 R)
• M17: 15,969,274 km (0.106 R)
• M18: 17,285,286 km (0.071 R)
• M19: 18,178,834 km (0.08 R)
• M20: 18,815,223 km (0.107 R)
• M21: 19,539,726 km (0.099 R)
• M22: 23,444,829 km (0.062 R)
• M23: 25,143,213 km (0.119 R)
• M24: 26,379,789 km (0.104 R)
• M25: 29,940,967 km (0.082 R)
• M26: 31,229,453 km (0.057 R)
• M27: 34,343,632 km (0.079 R)
• M28: 35,865,491 km (0.113 R)
• M29: 37,092,493 km (0.119 R)
• M30: 37,659,319 km (0.12 R)
• M31: 38,462,660 km (0.116 R)

Planet 9 - Ice Giant

Semi-Major Axis: 7.28 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 21.4

Radius: 7

Gravity: 0.44 G

Time & Orbit

Eccentricity (e): 0.102

Orbit Range: 6.54 AU - 8.02 AU

Year: 12683 Days

Day: 20.2 Hours

Environment

Temp: -231 °C

Axial Tilt: 46.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 17,688,163 km

• M1: 90,656 km (0.045 R)
• M2: 453,132 km (0.083 R)
• M3: 674,686 km (0.105 R)
• M4: 921,972 km (0.071 R)
• M5: 1,171,800 km (0.108 R)
• M6: 1,914,404 km (0.063 R)
• M7: 2,463,279 km (0.04 R)
• M8: 2,952,015 km (0.038 R)
• M9: 4,121,571 km (0.059 R)
• M10: 8,568,816 km (0.063 R)
• M11: 11,165,536 km (0.109 R)
• M12: 13,350,712 km (0.082 R)
• M13: 16,200,851 km (0.114 R)

Kuiper Belt

Range: 30 - 46 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 157 - 13,925 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit