🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.41 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.81 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.42

Radius: 0.71

Gravity: 0.83 G

Time & Orbit

Eccentricity (e): 0.096

Orbit Range: 0.73 AU - 0.89 AU

Year: 256 Days

Day: 29.6 Hours

Environment

Temp: 160 °C

Axial Tilt: 20.5 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 1.18 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.1

Radius: 1.76

Gravity: 1.32 G

Time & Orbit

Eccentricity (e): 0.063

Orbit Range: 1.11 AU - 1.25 AU

Year: 451 Days

Day: 34.5 Hours

Environment

Temp: 24 °C

Axial Tilt: 25.9 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Satellites (1)

Outer Limit: 54,979,633 km

• M1: 117,434 km (0.087 R)

Planet 3 - Terrestrial

Semi-Major Axis: 3.59 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.57

Radius: 0.8

Gravity: 0.89 G

Time & Orbit

Eccentricity (e): 0.2

Orbit Range: 2.87 AU - 4.31 AU

Year: 2391 Days

Day: 24.8 Hours

Environment

Temp: -103 °C

Axial Tilt: 16.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 54,979,633 km

• M1: 18,700 km (0.082 R)

Planet 4 - Terrestrial

Semi-Major Axis: 5.04 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.49

Radius: 0.75

Gravity: 0.87 G

Time & Orbit

Eccentricity (e): 0.078

Orbit Range: 4.65 AU - 5.43 AU

Year: 3977 Days

Day: 39.9 Hours

Environment

Temp: -127 °C

Axial Tilt: 41.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 5 - Gas Giant

Semi-Major Axis: 6.4 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 53

Radius: 8.5

Gravity: 0.73 G

Time & Orbit

Eccentricity (e): 0.014

Orbit Range: 6.31 AU - 6.49 AU

Year: 5690 Days

Day: 11.5 Hours

Environment

Temp: -152 °C

Axial Tilt: 29.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 54,979,633 km

• M1: 130,300 km (0.098 R)
• M2: 583,581 km (0.109 R)
• M3: 937,829 km (0.119 R)
• M4: 1,996,084 km (0.073 R)
• M5: 2,359,009 km (0.081 R)
• M6: 3,703,744 km (0.075 R)
• M7: 4,217,762 km (0.044 R)
• M8: 11,015,938 km (0.105 R)
• M9: 13,818,056 km (0.049 R)

Planet 6 - Ice Giant

Semi-Major Axis: 15.55 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 554.9

Radius: 7.4

Gravity: 10.13 G

Time & Orbit

Eccentricity (e): 0.228

Orbit Range: 12 AU - 19.1 AU

Year: 21551 Days

Day: 15.6 Hours

Environment

Temp: -195 °C

Axial Tilt: 53.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (31)

Outer Limit: 54,979,633 km

• M1: 92,003 km (0.107 R)
• M2: 397,033 km (0.037 R)
• M3: 661,372 km (0.107 R)
• M4: 1,134,251 km (0.041 R)
• M5: 1,477,728 km (0.099 R)
• M6: 2,463,877 km (0.084 R)
• M7: 3,096,676 km (0.106 R)
• M8: 3,508,369 km (0.115 R)
• M9: 4,715,923 km (0.119 R)
• M10: 5,149,159 km (0.091 R)
• M11: 6,697,796 km (0.046 R)
• M12: 7,578,479 km (0.111 R)
• M13: 8,072,002 km (0.096 R)
• M14: 8,326,617 km (0.111 R)
• M15: 10,928,274 km (0.116 R)
• M16: 13,450,494 km (0.108 R)
• M17: 17,666,611 km (0.116 R)
• M18: 19,519,829 km (0.052 R)
• M19: 29,177,270 km (0.113 R)
• M20: 31,004,757 km (0.075 R)
• M21: 40,996,698 km (0.099 R)
• M22: 41,297,091 km (0.05 R)
• M23: 42,054,505 km (0.052 R)
• M24: 45,981,150 km (0.044 R)
• M25: 48,116,510 km (0.087 R)
• M26: 54,917,678 km (0.079 R)
• M27: 57,319,920 km (0.033 R)
• M28: 62,134,578 km (0.111 R)
• M29: 67,420,768 km (0.12 R)
• M30: 68,893,559 km (0.052 R)
• M31: 72,778,915 km (0.12 R)

Planet 7 - Ice Giant

Semi-Major Axis: 17.13 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 927.2

Radius: 3.8

Gravity: 64.21 G

Time & Orbit

Eccentricity (e): 0.062

Orbit Range: 16.07 AU - 18.19 AU

Year: 24918 Days

Day: 17.7 Hours

Environment

Temp: -200 °C

Axial Tilt: 49.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (39)

Outer Limit: 54,979,633 km

• M1: 47,273 km (0.091 R)
• M2: 292,314 km (0.065 R)
• M3: 469,139 km (0.091 R)
• M4: 936,483 km (0.11 R)
• M5: 1,569,282 km (0.073 R)
• M6: 2,007,454 km (0.114 R)
• M7: 2,447,571 km (0.112 R)
• M8: 3,360,267 km (0.114 R)
• M9: 3,808,612 km (0.058 R)
• M10: 4,012,514 km (0.092 R)
• M11: 6,470,258 km (0.054 R)
• M12: 6,662,940 km (0.103 R)
• M13: 6,959,143 km (0.069 R)
• M14: 7,684,244 km (0.114 R)
• M15: 7,845,960 km (0.117 R)
• M16: 8,288,320 km (0.064 R)
• M17: 9,344,182 km (0.101 R)
• M18: 9,715,185 km (0.102 R)
• M19: 9,968,005 km (0.087 R)
• M20: 11,091,336 km (0.078 R)
• M21: 14,385,481 km (0.088 R)
• M22: 17,615,897 km (0.114 R)
• M23: 21,192,633 km (0.075 R)
• M24: 25,343,525 km (0.108 R)
• M25: 28,306,909 km (0.103 R)
• M26: 32,606,352 km (0.075 R)
• M27: 37,013,804 km (0.1 R)
• M28: 39,041,155 km (0.075 R)
• M29: 43,656,399 km (0.114 R)
• M30: 46,094,694 km (0.091 R)
• M31: 46,987,046 km (0.077 R)
• M32: 48,438,743 km (0.032 R)
• M33: 51,240,711 km (0.12 R)
• M34: 69,880,606 km (0.073 R)
• M35: 73,935,905 km (0.068 R)
• M36: 85,422,030 km (0.059 R)
• M37: 87,853,444 km (0.097 R)
• M38: 90,608,588 km (0.11 R)
• M39: 95,712,119 km (0.119 R)

Planet 8 - Ice Giant

Semi-Major Axis: 17.72 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 150.4

Radius: 4.2

Gravity: 8.53 G

Time & Orbit

Eccentricity (e): 0.232

Orbit Range: 13.61 AU - 21.83 AU

Year: 26216 Days

Day: 18.3 Hours

Environment

Temp: -190 °C

Axial Tilt: 1.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 54,979,633 km

• M1: 52,210 km (0.098 R)
• M2: 336,595 km (0.035 R)
• M3: 774,169 km (0.063 R)
• M4: 2,657,905 km (0.108 R)
• M5: 4,795,210 km (0.05 R)
• M6: 9,959,029 km (0.094 R)
• M7: 10,603,796 km (0.113 R)
• M8: 11,048,850 km (0.105 R)
• M9: 13,462,312 km (0.045 R)
• M10: 13,852,164 km (0.073 R)
• M11: 17,784,344 km (0.095 R)
• M12: 21,244,842 km (0.106 R)
• M13: 24,259,389 km (0.092 R)
• M14: 25,226,240 km (0.108 R)
• M15: 33,665,654 km (0.118 R)
• M16: 34,867,374 km (0.05 R)
• M17: 40,361,805 km (0.08 R)

Kuiper Belt

Range: 31.2 - 48.2 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 479 - 14,512 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit