🌌 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: 4.79

Radius: 1.87

Gravity: 1.37 G

Time & Orbit

Eccentricity (e): 0.189

Orbit Range: 0.43 AU - 0.63 AU

Year: 249 Days

Day: 39.7 Hours

Environment

Temp: -122 °C

Axial Tilt: 21.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 70,109,865 km

• M1: 43,683 km (0.106 R)
• M2: 170,542 km (0.059 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.65 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.93

Radius: 1.54

Gravity: 1.24 G

Time & Orbit

Eccentricity (e): 0.172

Orbit Range: 0.54 AU - 0.76 AU

Year: 338 Days

Day: 28.7 Hours

Environment

Temp: -137 °C

Axial Tilt: 95.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.68 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 116

Radius: 14

Gravity: 0.59 G

Time & Orbit

Eccentricity (e): 0.053

Orbit Range: 0.64 AU - 0.72 AU

Year: 362 Days

Day: 6.2 Hours

Environment

Temp: -141 °C

Axial Tilt: 21.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (5)

Outer Limit: 70,109,865 km

• M1: 174,132 km (0.098 R)
• M2: 650,601 km (0.082 R)
• M3: 1,329,626 km (0.099 R)
• M4: 1,773,782 km (0.093 R)
• M5: 2,291,540 km (0.075 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.88 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 69.2

Radius: 11

Gravity: 0.57 G

Time & Orbit

Eccentricity (e): 0.196

Orbit Range: 0.71 AU - 1.05 AU

Year: 533 Days

Day: 7.9 Hours

Environment

Temp: -151 °C

Axial Tilt: 17.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 70,109,865 km

• M1: 137,032 km (0.087 R)
• M2: 653,892 km (0.044 R)
• M3: 1,100,592 km (0.076 R)
• M4: 1,639,593 km (0.116 R)
• M5: 2,067,592 km (0.092 R)
• M6: 2,454,153 km (0.034 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.37 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 514.4

Radius: 14.7

Gravity: 2.38 G

Time & Orbit

Eccentricity (e): 0.073

Orbit Range: 1.27 AU - 1.47 AU

Year: 1035 Days

Day: 11.5 Hours

Environment

Temp: -182 °C

Axial Tilt: 11.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 70,109,865 km

• M1: 183,557 km (0.11 R)
• M2: 704,008 km (0.094 R)
• M3: 1,311,973 km (0.082 R)
• M4: 1,955,693 km (0.099 R)
• M5: 2,867,492 km (0.113 R)
• M6: 3,541,430 km (0.107 R)
• M7: 4,063,826 km (0.093 R)
• M8: 6,031,637 km (0.075 R)
• M9: 7,029,903 km (0.102 R)
• M10: 8,110,299 km (0.09 R)
• M11: 9,079,544 km (0.045 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.42 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 819.4

Radius: 12.7

Gravity: 5.08 G

Time & Orbit

Eccentricity (e): 0.19

Orbit Range: 1.15 AU - 1.69 AU

Year: 1093 Days

Day: 10.2 Hours

Environment

Temp: -179 °C

Axial Tilt: 14.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 70,109,865 km

• M1: 158,424 km (0.105 R)
• M2: 679,922 km (0.101 R)
• M3: 1,121,834 km (0.096 R)
• M4: 1,583,194 km (0.055 R)
• M5: 2,118,904 km (0.112 R)
• M6: 2,549,896 km (0.12 R)
• M7: 3,561,776 km (0.085 R)
• M8: 4,511,124 km (0.09 R)
• M9: 4,977,869 km (0.104 R)
• M10: 6,459,486 km (0.073 R)
• M11: 8,108,953 km (0.092 R)
• M12: 9,295,563 km (0.034 R)
• M13: 10,691,909 km (0.038 R)

Planet 7 - Gas Giant

Semi-Major Axis: 1.72 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 795.1

Radius: 11.8

Gravity: 5.71 G

Time & Orbit

Eccentricity (e): 0.036

Orbit Range: 1.66 AU - 1.78 AU

Year: 1456 Days

Day: 14.8 Hours

Environment

Temp: -174 °C

Axial Tilt: 32 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 70,109,865 km

• M1: 146,905 km (0.083 R)
• M2: 522,994 km (0.084 R)
• M3: 897,886 km (0.069 R)
• M4: 1,346,381 km (0.071 R)
• M5: 1,780,065 km (0.097 R)
• M6: 2,343,750 km (0.068 R)
• M7: 3,097,424 km (0.077 R)
• M8: 3,780,787 km (0.067 R)
• M9: 4,504,541 km (0.06 R)
• M10: 5,148,112 km (0.079 R)
• M11: 5,603,188 km (0.115 R)
• M12: 6,421,489 km (0.096 R)
• M13: 6,846,945 km (0.068 R)
• M14: 7,979,401 km (0.088 R)
• M15: 8,412,935 km (0.104 R)
• M16: 9,327,128 km (0.108 R)
• M17: 9,710,996 km (0.077 R)
• M18: 12,164,700 km (0.085 R)

Planet 8 - Gas Giant

Semi-Major Axis: 2.2 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 835

Radius: 11.3

Gravity: 6.54 G

Time & Orbit

Eccentricity (e): 0.037

Orbit Range: 2.12 AU - 2.28 AU

Year: 2107 Days

Day: 7.3 Hours

Environment

Temp: -199 °C

Axial Tilt: 38.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 70,109,865 km

• M1: 142,417 km (0.112 R)
• M2: 1,550,881 km (0.074 R)
• M3: 2,080,757 km (0.094 R)
• M4: 3,987,531 km (0.085 R)
• M5: 4,490,479 km (0.115 R)
• M6: 5,265,546 km (0.12 R)
• M7: 5,797,067 km (0.111 R)
• M8: 6,606,392 km (0.108 R)
• M9: 7,052,792 km (0.057 R)
• M10: 7,944,395 km (0.106 R)
• M11: 8,482,050 km (0.117 R)
• M12: 9,247,991 km (0.082 R)
• M13: 10,689,067 km (0.098 R)
• M14: 11,582,914 km (0.1 R)
• M15: 11,986,679 km (0.08 R)
• M16: 13,831,370 km (0.098 R)
• M17: 14,470,901 km (0.053 R)
• M18: 15,515,543 km (0.094 R)
• M19: 16,306,467 km (0.109 R)
• M20: 17,437,577 km (0.118 R)

Asteroid Belt

Center: 3.4 AU

Composition

Type: Outer System (Icy)

A dense region of planetesimals and debris.

Boundary

Planet 9 - Gas Giant

Semi-Major Axis: 4.59 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 24.2

Radius: 13.3

Gravity: 0.14 G

Time & Orbit

Eccentricity (e): 0.149

Orbit Range: 3.91 AU - 5.27 AU

Year: 6349 Days

Day: 5.9 Hours

Environment

Temp: -212 °C

Axial Tilt: 96.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (4)

Outer Limit: 70,109,865 km

• M1: 166,353 km (0.102 R)
• M2: 2,881,853 km (0.08 R)
• M3: 4,387,107 km (0.111 R)
• M4: 8,683,109 km (0.076 R)

Planet 10 - Ice Giant

Semi-Major Axis: 10.36 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 462.4

Radius: 7.5

Gravity: 8.22 G

Time & Orbit

Eccentricity (e): 0.071

Orbit Range: 9.62 AU - 11.1 AU

Year: 21531 Days

Day: 19.6 Hours

Environment

Temp: -222 °C

Axial Tilt: 14.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (31)

Outer Limit: 70,109,865 km

• M1: 93,947 km (0.055 R)
• M2: 353,949 km (0.096 R)
• M3: 612,454 km (0.113 R)
• M4: 990,338 km (0.118 R)
• M5: 1,890,767 km (0.069 R)
• M6: 2,138,950 km (0.064 R)
• M7: 2,387,582 km (0.101 R)
• M8: 3,173,120 km (0.031 R)
• M9: 4,183,056 km (0.038 R)
• M10: 11,241,382 km (0.106 R)
• M11: 13,128,260 km (0.095 R)
• M12: 13,613,556 km (0.091 R)
• M13: 14,327,437 km (0.037 R)
• M14: 14,841,904 km (0.085 R)
• M15: 18,707,064 km (0.072 R)
• M16: 21,722,508 km (0.107 R)
• M17: 23,598,017 km (0.087 R)
• M18: 25,901,525 km (0.088 R)
• M19: 26,226,751 km (0.035 R)
• M20: 29,631,449 km (0.068 R)
• M21: 36,076,424 km (0.114 R)
• M22: 37,302,977 km (0.119 R)
• M23: 39,983,322 km (0.051 R)
• M24: 42,789,329 km (0.028 R)
• M25: 51,305,637 km (0.062 R)
• M26: 53,379,363 km (0.077 R)
• M27: 56,775,683 km (0.072 R)
• M28: 58,806,474 km (0.08 R)
• M29: 60,313,523 km (0.041 R)
• M30: 67,414,635 km (0.066 R)
• M31: 70,109,940 km (0.112 R)

Kuiper Belt

Range: 30 - 54 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 219 - 13,726 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit