🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.27 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.53 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.34

Radius: 1.12

Gravity: 1.07 G

Time & Orbit

Eccentricity (e): 0.244

Orbit Range: 0.4 AU - 0.66 AU

Year: 253 Days

Day: 31.5 Hours

Environment

Temp: -117 °C

Axial Tilt: 37 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 87,264,967 km

• M1: 26,628 km (0.108 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.57 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.82

Radius: 1.27

Gravity: 1.13 G

Time & Orbit

Eccentricity (e): 0.16

Orbit Range: 0.48 AU - 0.66 AU

Year: 282 Days

Day: 32.9 Hours

Environment

Temp: -134 °C

Axial Tilt: 43.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 87,264,967 km

• M1: 33,061 km (0.095 R)
• M2: 448,195 km (0.098 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.75 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 957

Radius: 11.8

Gravity: 6.87 G

Time & Orbit

Eccentricity (e): 0.225

Orbit Range: 0.58 AU - 0.92 AU

Year: 426 Days

Day: 9.3 Hours

Environment

Temp: -149 °C

Axial Tilt: 3.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 87,264,967 km

• M1: 147,055 km (0.044 R)
• M2: 549,623 km (0.034 R)
• M3: 940,671 km (0.117 R)
• M4: 1,452,446 km (0.094 R)
• M5: 1,821,952 km (0.104 R)
• M6: 2,310,539 km (0.103 R)
• M7: 2,886,042 km (0.086 R)
• M8: 3,285,468 km (0.119 R)
• M9: 3,670,085 km (0.116 R)
• M10: 4,516,360 km (0.115 R)
• M11: 5,677,538 km (0.109 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.56 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 711.8

Radius: 12

Gravity: 4.94 G

Time & Orbit

Eccentricity (e): 0.036

Orbit Range: 1.5 AU - 1.62 AU

Year: 1278 Days

Day: 8.3 Hours

Environment

Temp: -177 °C

Axial Tilt: 23.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 87,264,967 km

• M1: 150,795 km (0.091 R)
• M2: 745,895 km (0.117 R)
• M3: 1,171,800 km (0.086 R)
• M4: 1,725,911 km (0.05 R)
• M5: 2,119,353 km (0.112 R)
• M6: 3,177,908 km (0.059 R)
• M7: 4,287,924 km (0.044 R)
• M8: 4,844,727 km (0.081 R)
• M9: 5,345,282 km (0.111 R)
• M10: 6,264,261 km (0.112 R)
• M11: 6,982,929 km (0.063 R)
• M12: 7,863,163 km (0.068 R)
• M13: 8,330,208 km (0.054 R)
• M14: 10,849,436 km (0.114 R)
• M15: 11,638,714 km (0.073 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.87 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 467.3

Radius: 12.7

Gravity: 2.9 G

Time & Orbit

Eccentricity (e): 0.091

Orbit Range: 2.61 AU - 3.13 AU

Year: 3190 Days

Day: 10.3 Hours

Environment

Temp: -205 °C

Axial Tilt: 17.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 87,264,967 km

• M1: 157,975 km (0.097 R)
• M2: 717,771 km (0.054 R)
• M3: 1,196,633 km (0.113 R)
• M4: 1,636,900 km (0.092 R)
• M5: 2,173,657 km (0.032 R)
• M6: 3,001,681 km (0.05 R)
• M7: 3,516,448 km (0.05 R)
• M8: 3,911,536 km (0.112 R)
• M9: 4,928,502 km (0.057 R)
• M10: 5,623,833 km (0.096 R)
• M11: 6,301,960 km (0.109 R)
• M12: 10,200,032 km (0.095 R)
• M13: 10,658,100 km (0.083 R)
• M14: 11,739,394 km (0.074 R)
• M15: 12,285,576 km (0.103 R)
• M16: 12,980,906 km (0.101 R)
• M17: 16,232,715 km (0.097 R)
• M18: 16,647,999 km (0.116 R)
• M19: 18,831,829 km (0.108 R)
• M20: 19,406,434 km (0.057 R)

Planet 6 - Gas Giant

Semi-Major Axis: 4.35 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 142.6

Radius: 9.4

Gravity: 1.61 G

Time & Orbit

Eccentricity (e): 0.107

Orbit Range: 3.88 AU - 4.82 AU

Year: 5952 Days

Day: 9.1 Hours

Environment

Temp: -203 °C

Axial Tilt: 38.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 87,264,967 km

• M1: 118,182 km (0.109 R)
• M2: 460,013 km (0.06 R)
• M3: 828,473 km (0.088 R)
• M4: 1,187,657 km (0.083 R)
• M5: 1,494,184 km (0.076 R)
• M6: 2,087,489 km (0.064 R)
• M7: 3,298,633 km (0.101 R)
• M8: 4,765,291 km (0.075 R)
• M9: 7,000,732 km (0.072 R)
• M10: 7,606,902 km (0.041 R)
• M11: 8,958,668 km (0.077 R)
• M12: 9,347,025 km (0.074 R)
• M13: 11,338,023 km (0.107 R)
• M14: 14,109,922 km (0.087 R)
• M15: 17,907,763 km (0.032 R)
• M16: 18,867,732 km (0.11 R)

Planet 7 - Ice Giant

Semi-Major Axis: 8.88 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 732.6

Radius: 6.9

Gravity: 15.39 G

Time & Orbit

Eccentricity (e): 0.155

Orbit Range: 7.5 AU - 10.26 AU

Year: 17359 Days

Day: 15.6 Hours

Environment

Temp: -238 °C

Axial Tilt: 45.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (32)

Outer Limit: 87,264,967 km

• M1: 85,869 km (0.103 R)
• M2: 349,161 km (0.034 R)
• M3: 578,495 km (0.079 R)
• M4: 1,039,107 km (0.098 R)
• M5: 1,722,769 km (0.027 R)
• M6: 2,213,001 km (0.114 R)
• M7: 2,581,162 km (0.077 R)
• M8: 2,840,714 km (0.06 R)
• M9: 3,249,565 km (0.076 R)
• M10: 3,696,863 km (0.09 R)
• M11: 4,924,014 km (0.119 R)
• M12: 5,987,356 km (0.078 R)
• M13: 8,507,781 km (0.066 R)
• M14: 10,318,663 km (0.055 R)
• M15: 12,705,347 km (0.113 R)
• M16: 18,536,822 km (0.093 R)
• M17: 19,416,756 km (0.051 R)
• M18: 20,508,970 km (0.104 R)
• M19: 21,834,258 km (0.066 R)
• M20: 23,723,081 km (0.057 R)
• M21: 31,745,267 km (0.06 R)
• M22: 32,244,475 km (0.109 R)
• M23: 34,163,217 km (0.116 R)
• M24: 34,687,408 km (0.116 R)
• M25: 40,374,371 km (0.105 R)
• M26: 42,450,191 km (0.112 R)
• M27: 44,908,533 km (0.111 R)
• M28: 46,332,106 km (0.109 R)
• M29: 46,974,479 km (0.061 R)
• M30: 52,155,054 km (0.05 R)
• M31: 68,079,597 km (0.075 R)
• M32: 70,378,468 km (0.102 R)

Planet 8 - Ice Giant

Semi-Major Axis: 10.76 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 771

Radius: 3.7

Gravity: 56.32 G

Time & Orbit

Eccentricity (e): 0.028

Orbit Range: 10.46 AU - 11.06 AU

Year: 23154 Days

Day: 23.5 Hours

Environment

Temp: -234 °C

Axial Tilt: 45.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (39)

Outer Limit: 87,264,967 km

• M1: 87,365 km (0.09 R)
• M2: 237,561 km (0.075 R)
• M3: 410,048 km (0.106 R)
• M4: 616,343 km (0.106 R)
• M5: 754,272 km (0.097 R)
• M6: 1,192,445 km (0.064 R)
• M7: 1,526,497 km (0.07 R)
• M8: 2,619,309 km (0.064 R)
• M9: 3,067,804 km (0.069 R)
• M10: 3,721,845 km (0.046 R)
• M11: 3,882,514 km (0.1 R)
• M12: 4,463,851 km (0.09 R)
• M13: 5,340,046 km (0.093 R)
• M14: 5,462,267 km (0.063 R)
• M15: 6,279,819 km (0.034 R)
• M16: 6,788,751 km (0.12 R)
• M17: 10,818,020 km (0.077 R)
• M18: 21,751,231 km (0.102 R)
• M19: 25,007,378 km (0.045 R)
• M20: 26,989,251 km (0.071 R)
• M21: 28,202,789 km (0.104 R)
• M22: 30,738,024 km (0.05 R)
• M23: 32,060,768 km (0.097 R)
• M24: 34,395,692 km (0.112 R)
• M25: 40,488,065 km (0.076 R)
• M26: 43,704,868 km (0.105 R)
• M27: 45,037,935 km (0.09 R)
• M28: 50,459,362 km (0.09 R)
• M29: 50,641,123 km (0.108 R)
• M30: 55,522,203 km (0.098 R)
• M31: 56,104,737 km (0.093 R)
• M32: 62,156,569 km (0.102 R)
• M33: 64,908,721 km (0.067 R)
• M34: 66,206,034 km (0.071 R)
• M35: 70,882,313 km (0.106 R)
• M36: 73,650,772 km (0.097 R)
• M37: 78,423,841 km (0.034 R)
• M38: 81,384,234 km (0.113 R)
• M39: 85,963,275 km (0.083 R)

Kuiper Belt

Range: 30 - 51 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 262 - 16,116 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit