🌌 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: 0.54 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.11

Radius: 1.35

Gravity: 1.16 G

Time & Orbit

Eccentricity (e): 0.208

Orbit Range: 0.43 AU - 0.65 AU

Year: 260 Days

Day: 14.7 Hours

Environment

Temp: -127 °C

Axial Tilt: 11.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.56 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.95

Radius: 1.31

Gravity: 1.14 G

Time & Orbit

Eccentricity (e): 0.158

Orbit Range: 0.47 AU - 0.65 AU

Year: 275 Days

Day: 32 Hours

Environment

Temp: -114 °C

Axial Tilt: 49.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.7 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 362

Radius: 10.3

Gravity: 3.41 G

Time & Orbit

Eccentricity (e): 0.053

Orbit Range: 0.66 AU - 0.74 AU

Year: 384 Days

Day: 13.7 Hours

Environment

Temp: -147 °C

Axial Tilt: 47.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 51,352,636 km

• M1: 128,355 km (0.109 R)
• M2: 570,117 km (0.039 R)
• M3: 904,918 km (0.112 R)
• M4: 1,463,366 km (0.089 R)
• M5: 1,892,563 km (0.115 R)
• M6: 2,569,044 km (0.094 R)
• M7: 3,027,861 km (0.082 R)
• M8: 3,367,298 km (0.05 R)
• M9: 3,778,244 km (0.072 R)
• M10: 4,348,511 km (0.074 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.87 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 753.8

Radius: 14.1

Gravity: 3.79 G

Time & Orbit

Eccentricity (e): 0.12

Orbit Range: 0.77 AU - 0.97 AU

Year: 532 Days

Day: 9.3 Hours

Environment

Temp: -157 °C

Axial Tilt: 27.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 51,352,636 km

• M1: 176,825 km (0.073 R)
• M2: 670,498 km (0.061 R)
• M3: 1,262,456 km (0.078 R)
• M4: 1,842,298 km (0.093 R)
• M5: 2,629,332 km (0.047 R)
• M6: 3,777,047 km (0.106 R)
• M7: 4,383,218 km (0.093 R)
• M8: 5,614,258 km (0.087 R)
• M9: 6,140,843 km (0.089 R)
• M10: 7,002,976 km (0.105 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.03 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 146.5

Radius: 13.3

Gravity: 0.83 G

Time & Orbit

Eccentricity (e): 0.061

Orbit Range: 0.97 AU - 1.09 AU

Year: 686 Days

Day: 8.5 Hours

Environment

Temp: -169 °C

Axial Tilt: 6.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 51,352,636 km

• M1: 168,896 km (0.111 R)
• M2: 605,123 km (0.084 R)
• M3: 1,708,707 km (0.075 R)
• M4: 2,145,233 km (0.1 R)
• M5: 2,722,083 km (0.115 R)
• M6: 3,390,486 km (0.118 R)
• M7: 4,569,916 km (0.11 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.83 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 448.2

Radius: 14.1

Gravity: 2.25 G

Time & Orbit

Eccentricity (e): 0.098

Orbit Range: 1.65 AU - 2.01 AU

Year: 1624 Days

Day: 12.2 Hours

Environment

Temp: -187 °C

Axial Tilt: 16 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 51,352,636 km

• M1: 175,329 km (0.048 R)
• M2: 681,119 km (0.073 R)
• M3: 1,451,249 km (0.098 R)
• M4: 2,163,036 km (0.048 R)
• M5: 3,421,602 km (0.046 R)
• M6: 4,345,818 km (0.105 R)
• M7: 5,514,626 km (0.067 R)
• M8: 6,014,882 km (0.099 R)
• M9: 7,310,100 km (0.091 R)
• M10: 8,051,208 km (0.053 R)
• M11: 9,622,135 km (0.116 R)
• M12: 12,168,141 km (0.032 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.76 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 497.5

Radius: 8.2

Gravity: 7.4 G

Time & Orbit

Eccentricity (e): 0.15

Orbit Range: 3.2 AU - 4.32 AU

Year: 4783 Days

Day: 11.8 Hours

Environment

Temp: -204 °C

Axial Tilt: 5.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (26)

Outer Limit: 51,352,636 km

• M1: 103,073 km (0.066 R)
• M2: 417,228 km (0.086 R)
• M3: 782,696 km (0.111 R)
• M4: 1,217,727 km (0.039 R)
• M5: 1,497,325 km (0.12 R)
• M6: 1,924,277 km (0.095 R)
• M7: 2,322,806 km (0.049 R)
• M8: 2,897,412 km (0.105 R)
• M9: 4,351,054 km (0.102 R)
• M10: 5,411,105 km (0.08 R)
• M11: 6,001,567 km (0.109 R)
• M12: 6,982,929 km (0.064 R)
• M13: 7,751,862 km (0.115 R)
• M14: 8,355,490 km (0.11 R)
• M15: 10,229,502 km (0.118 R)
• M16: 10,955,800 km (0.077 R)
• M17: 12,510,571 km (0.097 R)
• M18: 14,521,914 km (0.098 R)
• M19: 14,787,600 km (0.048 R)
• M20: 17,327,473 km (0.098 R)
• M21: 17,929,006 km (0.068 R)
• M22: 19,558,126 km (0.118 R)
• M23: 22,324,041 km (0.113 R)
• M24: 22,749,498 km (0.109 R)
• M25: 24,281,679 km (0.119 R)
• M26: 26,037,210 km (0.089 R)

Planet 8 - Gas Giant

Semi-Major Axis: 5.26 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 302.4

Radius: 9.1

Gravity: 3.65 G

Time & Orbit

Eccentricity (e): 0.152

Orbit Range: 4.46 AU - 6.06 AU

Year: 7914 Days

Day: 13.8 Hours

Environment

Temp: -216 °C

Axial Tilt: 10.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 51,352,636 km

• M1: 121,773 km (0.063 R)
• M2: 435,479 km (0.102 R)
• M3: 1,701,975 km (0.092 R)
• M4: 2,836,525 km (0.109 R)
• M5: 4,513,218 km (0.096 R)
• M6: 5,936,044 km (0.045 R)
• M7: 7,492,460 km (0.099 R)
• M8: 9,810,180 km (0.055 R)
• M9: 13,556,559 km (0.095 R)
• M10: 16,283,279 km (0.042 R)
• M11: 17,393,894 km (0.093 R)
• M12: 21,028,225 km (0.047 R)
• M13: 23,022,364 km (0.118 R)

Planet 9 - Ice Giant

Semi-Major Axis: 6.33 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 771.7

Radius: 3.7

Gravity: 56.37 G

Time & Orbit

Eccentricity (e): 0.225

Orbit Range: 4.91 AU - 7.75 AU

Year: 10448 Days

Day: 20.2 Hours

Environment

Temp: -232 °C

Axial Tilt: 19.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (38)

Outer Limit: 51,352,636 km

• M1: 46,375 km (0.032 R)
• M2: 381,475 km (0.114 R)
• M3: 630,405 km (0.112 R)
• M4: 968,796 km (0.106 R)
• M5: 1,124,677 km (0.119 R)
• M6: 2,561,415 km (0.025 R)
• M7: 2,817,078 km (0.112 R)
• M8: 4,240,202 km (0.119 R)
• M9: 5,649,414 km (0.087 R)
• M10: 6,932,216 km (0.115 R)
• M11: 7,260,134 km (0.067 R)
• M12: 7,385,647 km (0.07 R)
• M13: 8,080,230 km (0.119 R)
• M14: 8,351,451 km (0.065 R)
• M15: 9,648,015 km (0.046 R)
• M16: 10,004,806 km (0.078 R)
• M17: 11,183,787 km (0.105 R)
• M18: 11,407,586 km (0.107 R)
• M19: 12,814,105 km (0.083 R)
• M20: 14,729,556 km (0.069 R)
• M21: 15,270,801 km (0.08 R)
• M22: 17,047,725 km (0.111 R)
• M23: 18,486,856 km (0.114 R)
• M24: 20,418,165 km (0.111 R)
• M25: 21,175,728 km (0.104 R)
• M26: 21,690,943 km (0.068 R)
• M27: 22,126,722 km (0.102 R)
• M28: 23,378,108 km (0.07 R)
• M29: 28,646,496 km (0.07 R)
• M30: 29,808,722 km (0.094 R)
• M31: 31,443,677 km (0.116 R)
• M32: 34,653,599 km (0.059 R)
• M33: 40,389,929 km (0.103 R)
• M34: 41,314,893 km (0.112 R)
• M35: 41,715,516 km (0.099 R)
• M36: 42,660,526 km (0.113 R)
• M37: 46,439,069 km (0.093 R)
• M38: 48,631,575 km (0.109 R)

Kuiper Belt

Range: 30 - 52 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 280 - 17,860 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit