🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.26 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.52 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.73

Radius: 1.86

Gravity: 1.37 G

Time & Orbit

Eccentricity (e): 0.071

Orbit Range: 0.48 AU - 0.56 AU

Year: 242 Days

Day: 39.5 Hours

Environment

Temp: -122 °C

Axial Tilt: 18.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.97 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 940.2

Radius: 11.7

Gravity: 6.87 G

Time & Orbit

Eccentricity (e): 0.006

Orbit Range: 0.96 AU - 0.98 AU

Year: 617 Days

Day: 12.7 Hours

Environment

Temp: -152 °C

Axial Tilt: 36.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 80,159,026 km

• M1: 145,559 km (0.045 R)
• M2: 542,891 km (0.113 R)
• M3: 1,054,815 km (0.026 R)
• M4: 1,497,475 km (0.113 R)
• M5: 2,267,455 km (0.077 R)
• M6: 2,737,342 km (0.06 R)
• M7: 3,389,738 km (0.113 R)
• M8: 4,082,825 km (0.095 R)
• M9: 6,445,873 km (0.1 R)
• M10: 6,910,374 km (0.082 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.23 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 357.5

Radius: 14.6

Gravity: 1.68 G

Time & Orbit

Eccentricity (e): 0.19

Orbit Range: 1 AU - 1.46 AU

Year: 881 Days

Day: 6.3 Hours

Environment

Temp: -175 °C

Axial Tilt: 41.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 80,159,026 km

• M1: 181,612 km (0.105 R)
• M2: 644,767 km (0.119 R)
• M3: 1,242,410 km (0.114 R)
• M4: 1,736,831 km (0.094 R)
• M5: 2,652,969 km (0.095 R)
• M6: 3,914,827 km (0.083 R)
• M7: 4,649,502 km (0.113 R)
• M8: 5,109,665 km (0.114 R)
• M9: 5,618,597 km (0.093 R)
• M10: 6,103,444 km (0.117 R)
• M11: 6,946,428 km (0.12 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.27 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 766.8

Radius: 10.3

Gravity: 7.23 G

Time & Orbit

Eccentricity (e): 0.131

Orbit Range: 1.1 AU - 1.44 AU

Year: 924 Days

Day: 12.6 Hours

Environment

Temp: -177 °C

Axial Tilt: 25.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 80,159,026 km

• M1: 128,056 km (0.115 R)
• M2: 460,313 km (0.119 R)
• M3: 989,590 km (0.107 R)
• M4: 1,892,114 km (0.12 R)
• M5: 2,627,836 km (0.093 R)
• M6: 3,529,313 km (0.096 R)
• M7: 3,908,693 km (0.09 R)
• M8: 4,399,673 km (0.113 R)
• M9: 5,005,694 km (0.119 R)
• M10: 5,666,468 km (0.037 R)
• M11: 6,584,251 km (0.097 R)
• M12: 7,161,699 km (0.032 R)
• M13: 8,312,406 km (0.087 R)
• M14: 8,932,040 km (0.056 R)
• M15: 9,553,320 km (0.071 R)
• M16: 9,904,127 km (0.116 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.62 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 579.5

Radius: 8

Gravity: 9.05 G

Time & Orbit

Eccentricity (e): 0.223

Orbit Range: 1.26 AU - 1.98 AU

Year: 1331 Days

Day: 10.4 Hours

Environment

Temp: -171 °C

Axial Tilt: 46.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 80,159,026 km

• M1: 99,483 km (0.113 R)
• M2: 379,530 km (0.098 R)
• M3: 632,799 km (0.113 R)
• M4: 999,164 km (0.043 R)
• M5: 1,428,360 km (0.094 R)
• M6: 2,213,450 km (0.049 R)
• M7: 2,643,843 km (0.041 R)
• M8: 2,906,387 km (0.11 R)
• M9: 3,752,363 km (0.12 R)
• M10: 4,119,626 km (0.044 R)
• M11: 5,988,552 km (0.046 R)
• M12: 7,606,453 km (0.106 R)
• M13: 8,931,591 km (0.095 R)
• M14: 9,649,063 km (0.046 R)
• M15: 10,179,986 km (0.114 R)
• M16: 10,501,322 km (0.119 R)
• M17: 11,232,257 km (0.118 R)
• M18: 11,506,320 km (0.107 R)

Planet 6 - Gas Giant

Semi-Major Axis: 4.35 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 347

Radius: 12.5

Gravity: 2.22 G

Time & Orbit

Eccentricity (e): 0.07

Orbit Range: 4.05 AU - 4.65 AU

Year: 5858 Days

Day: 9.8 Hours

Environment

Temp: -207 °C

Axial Tilt: 6.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 80,159,026 km

• M1: 155,582 km (0.108 R)
• M2: 678,875 km (0.118 R)
• M3: 1,355,357 km (0.091 R)
• M4: 2,015,383 km (0.102 R)
• M5: 2,778,032 km (0.077 R)
• M6: 3,189,576 km (0.063 R)
• M7: 4,070,259 km (0.12 R)
• M8: 4,876,292 km (0.094 R)
• M9: 5,562,348 km (0.082 R)
• M10: 7,358,719 km (0.081 R)
• M11: 7,906,397 km (0.077 R)
• M12: 8,555,053 km (0.046 R)
• M13: 13,670,702 km (0.081 R)
• M14: 14,289,589 km (0.111 R)
• M15: 18,403,680 km (0.069 R)
• M16: 20,730,525 km (0.072 R)
• M17: 22,104,881 km (0.084 R)
• M18: 24,654,776 km (0.117 R)

Planet 7 - Gas Giant

Semi-Major Axis: 5.09 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 324.1

Radius: 12.1

Gravity: 2.21 G

Time & Orbit

Eccentricity (e): 0.185

Orbit Range: 4.15 AU - 6.03 AU

Year: 7415 Days

Day: 5.7 Hours

Environment

Temp: -227 °C

Axial Tilt: 38.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 80,159,026 km

• M1: 150,645 km (0.067 R)
• M2: 1,075,160 km (0.084 R)
• M3: 2,471,357 km (0.118 R)
• M4: 3,037,435 km (0.094 R)
• M5: 3,475,757 km (0.101 R)
• M6: 5,025,142 km (0.097 R)
• M7: 6,993,700 km (0.034 R)
• M8: 7,800,033 km (0.043 R)
• M9: 8,320,634 km (0.104 R)
• M10: 8,903,916 km (0.091 R)
• M11: 13,410,851 km (0.043 R)
• M12: 13,888,816 km (0.109 R)
• M13: 14,710,707 km (0.097 R)
• M14: 15,974,509 km (0.111 R)
• M15: 17,812,768 km (0.094 R)
• M16: 18,326,038 km (0.105 R)
• M17: 20,617,878 km (0.063 R)
• M18: 25,845,276 km (0.06 R)
• M19: 29,604,072 km (0.059 R)
• M20: 30,506,596 km (0.115 R)

Planet 8 - Ice Giant

Semi-Major Axis: 10.26 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 711.5

Radius: 3

Gravity: 79.06 G

Time & Orbit

Eccentricity (e): 0.143

Orbit Range: 8.79 AU - 11.73 AU

Year: 21220 Days

Day: 21.4 Hours

Environment

Temp: -239 °C

Axial Tilt: 18.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (38)

Outer Limit: 80,159,026 km

• M1: 45,627 km (0.114 R)
• M2: 141,071 km (0.058 R)
• M3: 234,420 km (0.09 R)
• M4: 424,110 km (0.035 R)
• M5: 604,375 km (0.051 R)
• M6: 867,368 km (0.119 R)
• M7: 1,131,110 km (0.112 R)
• M8: 2,244,118 km (0.053 R)
• M9: 2,494,245 km (0.087 R)
• M10: 2,969,368 km (0.056 R)
• M11: 4,399,075 km (0.036 R)
• M12: 4,503,494 km (0.058 R)
• M13: 6,144,583 km (0.073 R)
• M14: 7,387,143 km (0.118 R)
• M15: 9,009,382 km (0.083 R)
• M16: 9,521,306 km (0.07 R)
• M17: 10,052,528 km (0.078 R)
• M18: 12,101,121 km (0.093 R)
• M19: 13,734,431 km (0.115 R)
• M20: 14,565,148 km (0.106 R)
• M21: 16,914,582 km (0.088 R)
• M22: 17,517,312 km (0.099 R)
• M23: 19,132,520 km (0.116 R)
• M24: 20,262,882 km (0.106 R)
• M25: 24,460,149 km (0.095 R)
• M26: 26,818,410 km (0.08 R)
• M27: 27,519,127 km (0.094 R)
• M28: 30,317,953 km (0.1 R)
• M29: 31,334,321 km (0.112 R)
• M30: 41,989,579 km (0.074 R)
• M31: 48,895,615 km (0.112 R)
• M32: 52,797,726 km (0.09 R)
• M33: 53,896,822 km (0.112 R)
• M34: 55,011,176 km (0.069 R)
• M35: 58,836,244 km (0.082 R)
• M36: 62,427,191 km (0.047 R)
• M37: 74,070,543 km (0.099 R)
• M38: 78,488,168 km (0.12 R)

Kuiper Belt

Range: 30 - 49 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 193 - 10,312 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit