🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.26 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.52 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.51

Radius: 1.18

Gravity: 1.08 G

Time & Orbit

Eccentricity (e): 0.165

Orbit Range: 0.43 AU - 0.61 AU

Year: 242 Days

Day: 27.7 Hours

Environment

Temp: -115 °C

Axial Tilt: 102.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.78 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 158.2

Radius: 10.5

Gravity: 1.43 G

Time & Orbit

Eccentricity (e): 0.063

Orbit Range: 0.73 AU - 0.83 AU

Year: 445 Days

Day: 8.8 Hours

Environment

Temp: -150 °C

Axial Tilt: 25.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 36,807,100 km

• M1: 130,898 km (0.11 R)
• M2: 514,617 km (0.084 R)
• M3: 854,503 km (0.101 R)
• M4: 1,235,529 km (0.081 R)
• M5: 1,663,229 km (0.062 R)
• M6: 2,108,582 km (0.108 R)
• M7: 2,666,582 km (0.075 R)
• M8: 3,222,637 km (0.091 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.8 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 770.9

Radius: 12.5

Gravity: 4.93 G

Time & Orbit

Eccentricity (e): 0.105

Orbit Range: 0.72 AU - 0.88 AU

Year: 462 Days

Day: 13.3 Hours

Environment

Temp: -154 °C

Axial Tilt: 15.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 36,807,100 km

• M1: 155,582 km (0.07 R)
• M2: 553,363 km (0.073 R)
• M3: 996,172 km (0.111 R)
• M4: 1,598,304 km (0.099 R)
• M5: 2,022,563 km (0.109 R)
• M6: 4,541,791 km (0.101 R)
• M7: 6,251,845 km (0.107 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.12 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 526.9

Radius: 10.3

Gravity: 4.97 G

Time & Orbit

Eccentricity (e): 0.176

Orbit Range: 0.92 AU - 1.32 AU

Year: 765 Days

Day: 7.2 Hours

Environment

Temp: -170 °C

Axial Tilt: 5.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 36,807,100 km

• M1: 128,056 km (0.065 R)
• M2: 641,625 km (0.068 R)
• M3: 1,050,027 km (0.078 R)
• M4: 2,029,594 km (0.112 R)
• M5: 2,502,174 km (0.044 R)
• M6: 2,915,662 km (0.081 R)
• M7: 3,440,302 km (0.115 R)
• M8: 4,130,846 km (0.052 R)
• M9: 4,469,685 km (0.047 R)
• M10: 5,345,880 km (0.049 R)
• M11: 7,662,403 km (0.102 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.57 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 839.3

Radius: 8

Gravity: 13.11 G

Time & Orbit

Eccentricity (e): 0.222

Orbit Range: 1.22 AU - 1.92 AU

Year: 1270 Days

Day: 6.7 Hours

Environment

Temp: -189 °C

Axial Tilt: 29.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 36,807,100 km

• M1: 99,483 km (0.101 R)
• M2: 486,343 km (0.099 R)
• M3: 761,603 km (0.117 R)
• M4: 1,180,178 km (0.117 R)
• M5: 1,486,554 km (0.069 R)
• M6: 1,736,233 km (0.103 R)
• M7: 3,697,012 km (0.116 R)
• M8: 4,287,774 km (0.026 R)
• M9: 4,879,883 km (0.078 R)
• M10: 5,834,766 km (0.082 R)
• M11: 6,226,114 km (0.102 R)
• M12: 6,733,849 km (0.083 R)
• M13: 7,164,691 km (0.08 R)
• M14: 7,695,015 km (0.117 R)
• M15: 8,685,802 km (0.046 R)
• M16: 9,014,020 km (0.091 R)
• M17: 9,663,873 km (0.052 R)
• M18: 12,056,541 km (0.106 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.94 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 534.3

Radius: 12.4

Gravity: 3.47 G

Time & Orbit

Eccentricity (e): 0.194

Orbit Range: 1.56 AU - 2.32 AU

Year: 1745 Days

Day: 11.7 Hours

Environment

Temp: -180 °C

Axial Tilt: 48.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 36,807,100 km

• M1: 160,668 km (0.055 R)
• M2: 604,824 km (0.057 R)
• M3: 1,006,644 km (0.05 R)
• M4: 1,412,204 km (0.06 R)
• M5: 2,159,445 km (0.114 R)
• M6: 2,546,455 km (0.118 R)
• M7: 3,792,605 km (0.109 R)
• M8: 4,251,272 km (0.11 R)
• M9: 4,707,546 km (0.112 R)
• M10: 5,324,039 km (0.114 R)
• M11: 6,519,774 km (0.089 R)
• M12: 8,608,909 km (0.119 R)
• M13: 11,182,291 km (0.089 R)
• M14: 12,319,833 km (0.089 R)
• M15: 13,532,923 km (0.109 R)

Planet 7 - Gas Giant

Semi-Major Axis: 4.17 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 165.6

Radius: 9.2

Gravity: 1.96 G

Time & Orbit

Eccentricity (e): 0.143

Orbit Range: 3.57 AU - 4.77 AU

Year: 5498 Days

Day: 14.4 Hours

Environment

Temp: -220 °C

Axial Tilt: 10.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 36,807,100 km

• M1: 114,442 km (0.087 R)
• M2: 498,011 km (0.108 R)
• M3: 946,955 km (0.069 R)
• M4: 1,269,338 km (0.099 R)
• M5: 1,894,059 km (0.092 R)
• M6: 2,290,643 km (0.099 R)
• M7: 2,867,941 km (0.059 R)
• M8: 3,708,232 km (0.111 R)
• M9: 4,002,192 km (0.091 R)
• M10: 4,483,299 km (0.11 R)
• M11: 4,863,277 km (0.111 R)
• M12: 5,765,203 km (0.11 R)
• M13: 6,519,026 km (0.109 R)
• M14: 7,428,432 km (0.073 R)
• M15: 8,588,115 km (0.086 R)
• M16: 9,211,190 km (0.084 R)
• M17: 10,354,716 km (0.079 R)
• M18: 10,703,877 km (0.116 R)
• M19: 11,590,245 km (0.084 R)
• M20: 11,966,782 km (0.036 R)
• M21: 16,983,397 km (0.117 R)
• M22: 19,861,511 km (0.087 R)

Planet 8 - Ice Giant

Semi-Major Axis: 7.46 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 179.2

Radius: 4.1

Gravity: 10.66 G

Time & Orbit

Eccentricity (e): 0.181

Orbit Range: 6.11 AU - 8.81 AU

Year: 13156 Days

Day: 18.5 Hours

Environment

Temp: -227 °C

Axial Tilt: 8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 36,807,100 km

• M1: 51,761 km (0.066 R)
• M2: 299,196 km (0.077 R)
• M3: 750,682 km (0.119 R)
• M4: 1,396,047 km (0.08 R)
• M5: 1,681,630 km (0.105 R)
• M6: 2,132,218 km (0.116 R)
• M7: 2,474,648 km (0.112 R)
• M8: 2,735,397 km (0.084 R)
• M9: 4,040,190 km (0.116 R)
• M10: 5,339,447 km (0.103 R)
• M11: 6,000,969 km (0.11 R)
• M12: 6,402,789 km (0.065 R)
• M13: 6,893,919 km (0.101 R)
• M14: 7,485,279 km (0.104 R)
• M15: 8,030,115 km (0.111 R)
• M16: 17,293,215 km (0.096 R)
• M17: 23,105,242 km (0.059 R)
• M18: 25,528,577 km (0.058 R)
• M19: 25,701,812 km (0.084 R)
• M20: 27,658,103 km (0.12 R)
• M21: 29,047,419 km (0.113 R)
• M22: 31,964,577 km (0.025 R)

Kuiper Belt

Range: 30 - 56 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 267 - 12,288 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit