🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.31 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.62 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.49

Radius: 1.82

Gravity: 1.36 G

Time & Orbit

Eccentricity (e): 0.22

Orbit Range: 0.48 AU - 0.76 AU

Year: 315 Days

Day: 12.8 Hours

Environment

Temp: -131 °C

Axial Tilt: 13.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.62 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.6

Radius: 1.47

Gravity: 1.2 G

Time & Orbit

Eccentricity (e): 0.179

Orbit Range: 0.51 AU - 0.73 AU

Year: 315 Days

Day: 30.6 Hours

Environment

Temp: -122 °C

Axial Tilt: 35.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 64,697,523 km

• M1: 34,258 km (0.082 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.68 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 654.2

Radius: 13.4

Gravity: 3.64 G

Time & Orbit

Eccentricity (e): 0.094

Orbit Range: 0.62 AU - 0.74 AU

Year: 362 Days

Day: 6.1 Hours

Environment

Temp: -138 °C

Axial Tilt: 12.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 64,697,523 km

• M1: 167,101 km (0.07 R)
• M2: 625,319 km (0.066 R)
• M3: 1,489,546 km (0.059 R)
• M4: 1,933,403 km (0.09 R)
• M5: 2,678,699 km (0.119 R)
• M6: 3,346,504 km (0.091 R)
• M7: 4,123,516 km (0.109 R)
• M8: 4,576,049 km (0.119 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.43 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 442.4

Radius: 8.2

Gravity: 6.58 G

Time & Orbit

Eccentricity (e): 0.238

Orbit Range: 1.09 AU - 1.77 AU

Year: 1104 Days

Day: 10.3 Hours

Environment

Temp: -171 °C

Axial Tilt: 35.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 64,697,523 km

• M1: 102,475 km (0.084 R)
• M2: 441,015 km (0.058 R)
• M3: 761,752 km (0.092 R)
• M4: 1,522,458 km (0.098 R)
• M5: 1,812,528 km (0.075 R)
• M6: 2,222,276 km (0.088 R)
• M7: 2,814,086 km (0.082 R)
• M8: 3,120,911 km (0.117 R)
• M9: 3,637,771 km (0.053 R)
• M10: 4,065,921 km (0.059 R)
• M11: 4,425,554 km (0.095 R)
• M12: 4,682,862 km (0.091 R)
• M13: 5,227,698 km (0.039 R)
• M14: 6,186,470 km (0.083 R)
• M15: 6,618,958 km (0.111 R)
• M16: 7,140,905 km (0.102 R)
• M17: 7,962,496 km (0.114 R)
• M18: 8,500,600 km (0.084 R)
• M19: 9,451,145 km (0.115 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.77 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 338.3

Radius: 13.2

Gravity: 1.94 G

Time & Orbit

Eccentricity (e): 0.133

Orbit Range: 1.53 AU - 2.01 AU

Year: 1520 Days

Day: 6.3 Hours

Environment

Temp: -177 °C

Axial Tilt: 6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 64,697,523 km

• M1: 164,109 km (0.039 R)
• M2: 631,752 km (0.082 R)
• M3: 1,185,264 km (0.091 R)
• M4: 1,755,531 km (0.102 R)
• M5: 2,216,592 km (0.043 R)
• M6: 3,096,676 km (0.082 R)
• M7: 6,464,124 km (0.114 R)
• M8: 7,531,804 km (0.102 R)
• M9: 8,467,987 km (0.091 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.3 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 65.1

Radius: 8

Gravity: 1.02 G

Time & Orbit

Eccentricity (e): 0.178

Orbit Range: 1.89 AU - 2.71 AU

Year: 2252 Days

Day: 12.5 Hours

Environment

Temp: -194 °C

Axial Tilt: 0.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 64,697,523 km

• M1: 99,632 km (0.114 R)
• M2: 397,482 km (0.113 R)
• M3: 1,063,641 km (0.065 R)
• M4: 1,437,336 km (0.117 R)
• M5: 2,245,614 km (0.1 R)
• M6: 2,889,932 km (0.118 R)
• M7: 3,249,266 km (0.119 R)
• M8: 5,438,930 km (0.083 R)
• M9: 7,043,517 km (0.113 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.28 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 441.9

Radius: 14.5

Gravity: 2.1 G

Time & Orbit

Eccentricity (e): 0.129

Orbit Range: 2.86 AU - 3.7 AU

Year: 3836 Days

Day: 5.6 Hours

Environment

Temp: -201 °C

Axial Tilt: 41.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 64,697,523 km

• M1: 180,415 km (0.052 R)
• M2: 754,123 km (0.092 R)
• M3: 1,568,085 km (0.062 R)
• M4: 2,169,468 km (0.119 R)
• M5: 2,956,353 km (0.035 R)
• M6: 3,463,640 km (0.092 R)
• M7: 4,724,899 km (0.103 R)
• M8: 7,028,407 km (0.119 R)
• M9: 8,039,988 km (0.072 R)
• M10: 8,685,204 km (0.046 R)
• M11: 9,586,680 km (0.114 R)
• M12: 10,709,562 km (0.095 R)
• M13: 11,789,509 km (0.059 R)
• M14: 12,713,725 km (0.083 R)
• M15: 13,170,447 km (0.117 R)
• M16: 14,262,960 km (0.071 R)
• M17: 15,058,073 km (0.087 R)
• M18: 16,736,860 km (0.082 R)
• M19: 18,190,353 km (0.104 R)
• M20: 18,948,066 km (0.099 R)
• M21: 19,909,233 km (0.099 R)

Planet 8 - Ice Giant

Semi-Major Axis: 7.51 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 953.9

Radius: 5.5

Gravity: 31.53 G

Time & Orbit

Eccentricity (e): 0.166

Orbit Range: 6.26 AU - 8.76 AU

Year: 13288 Days

Day: 23 Hours

Environment

Temp: -229 °C

Axial Tilt: 18.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (34)

Outer Limit: 64,697,523 km

• M1: 69,264 km (0.071 R)
• M2: 241,900 km (0.117 R)
• M3: 601,084 km (0.062 R)
• M4: 917,933 km (0.116 R)
• M5: 1,127,519 km (0.11 R)
• M6: 1,326,484 km (0.119 R)
• M7: 1,830,928 km (0.111 R)
• M8: 2,792,095 km (0.077 R)
• M9: 3,236,999 km (0.114 R)
• M10: 3,449,428 km (0.113 R)
• M11: 4,266,980 km (0.074 R)
• M12: 6,735,644 km (0.115 R)
• M13: 8,002,439 km (0.113 R)
• M14: 9,367,071 km (0.079 R)
• M15: 10,188,662 km (0.074 R)
• M16: 10,646,132 km (0.094 R)
• M17: 12,548,269 km (0.113 R)
• M18: 12,809,168 km (0.101 R)
• M19: 13,477,272 km (0.084 R)
• M20: 15,396,912 km (0.063 R)
• M21: 20,211,121 km (0.088 R)
• M22: 20,569,707 km (0.084 R)
• M23: 22,046,687 km (0.107 R)
• M24: 25,004,087 km (0.106 R)
• M25: 29,458,962 km (0.047 R)
• M26: 37,424,600 km (0.119 R)
• M27: 38,924,169 km (0.102 R)
• M28: 39,340,051 km (0.034 R)
• M29: 41,032,901 km (0.059 R)
• M30: 41,752,467 km (0.099 R)
• M31: 43,811,681 km (0.064 R)
• M32: 46,713,431 km (0.034 R)
• M33: 47,972,596 km (0.116 R)
• M34: 58,508,026 km (0.079 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: 480 - 15,607 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit