🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.3 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.59 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.28

Radius: 0.6

Gravity: 0.78 G

Time & Orbit

Eccentricity (e): 0.049

Orbit Range: 0.56 AU - 0.62 AU

Year: 293 Days

Day: 24.5 Hours

Environment

Temp: -132 °C

Axial Tilt: 11.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 60,052,947 km

• M1: 79,885 km (0.079 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.7 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 729.2

Radius: 9.2

Gravity: 8.62 G

Time & Orbit

Eccentricity (e): 0.082

Orbit Range: 0.64 AU - 0.76 AU

Year: 378 Days

Day: 8.9 Hours

Environment

Temp: -147 °C

Axial Tilt: 4.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 60,052,947 km

• M1: 115,041 km (0.116 R)
• M2: 500,405 km (0.084 R)
• M3: 1,178,831 km (0.12 R)
• M4: 1,556,566 km (0.081 R)
• M5: 1,934,899 km (0.107 R)
• M6: 2,284,659 km (0.108 R)
• M7: 2,746,318 km (0.105 R)
• M8: 3,584,814 km (0.1 R)
• M9: 4,037,497 km (0.038 R)
• M10: 5,274,522 km (0.103 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.05 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 515.5

Radius: 8.8

Gravity: 6.66 G

Time & Orbit

Eccentricity (e): 0.247

Orbit Range: 0.79 AU - 1.31 AU

Year: 695 Days

Day: 13.9 Hours

Environment

Temp: -169 °C

Axial Tilt: 22.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 60,052,947 km

• M1: 109,506 km (0.112 R)
• M2: 459,565 km (0.098 R)
• M3: 753,375 km (0.049 R)
• M4: 1,100,891 km (0.091 R)
• M5: 1,418,637 km (0.026 R)
• M6: 1,740,870 km (0.041 R)
• M7: 2,196,246 km (0.099 R)
• M8: 2,473,302 km (0.102 R)
• M9: 2,898,459 km (0.077 R)
• M10: 4,365,715 km (0.03 R)
• M11: 5,209,297 km (0.11 R)
• M12: 5,816,964 km (0.058 R)
• M13: 6,551,340 km (0.117 R)
• M14: 7,173,667 km (0.104 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.2 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 16.6

Radius: 8.9

Gravity: 0.21 G

Time & Orbit

Eccentricity (e): 0.199

Orbit Range: 0.96 AU - 1.44 AU

Year: 849 Days

Day: 5.2 Hours

Environment

Temp: -167 °C

Axial Tilt: 36.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (4)

Outer Limit: 60,052,947 km

• M1: 285,134 km (0.053 R)
• M2: 713,881 km (0.057 R)
• M3: 1,755,681 km (0.059 R)
• M4: 2,216,741 km (0.079 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.27 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 823

Radius: 14.7

Gravity: 3.81 G

Time & Orbit

Eccentricity (e): 0.202

Orbit Range: 1.01 AU - 1.53 AU

Year: 924 Days

Day: 6.1 Hours

Environment

Temp: -166 °C

Axial Tilt: 14.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 60,052,947 km

• M1: 182,958 km (0.049 R)
• M2: 718,070 km (0.1 R)
• M3: 1,231,639 km (0.114 R)
• M4: 1,758,523 km (0.064 R)
• M5: 2,505,465 km (0.035 R)
• M6: 3,329,899 km (0.108 R)
• M7: 4,229,281 km (0.062 R)
• M8: 4,927,604 km (0.089 R)
• M9: 5,681,578 km (0.025 R)
• M10: 7,132,378 km (0.115 R)
• M11: 7,642,506 km (0.089 R)
• M12: 8,709,139 km (0.083 R)
• M13: 9,292,870 km (0.118 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.3 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 85.8

Radius: 8.5

Gravity: 1.19 G

Time & Orbit

Eccentricity (e): 0.048

Orbit Range: 1.24 AU - 1.36 AU

Year: 957 Days

Day: 14.5 Hours

Environment

Temp: -175 °C

Axial Tilt: 35.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 60,052,947 km

• M1: 105,915 km (0.099 R)
• M2: 388,206 km (0.116 R)
• M3: 816,505 km (0.098 R)
• M4: 1,130,062 km (0.098 R)
• M5: 2,120,550 km (0.079 R)
• M6: 2,986,123 km (0.117 R)
• M7: 4,006,081 km (0.111 R)
• M8: 4,277,452 km (0.117 R)
• M9: 4,714,876 km (0.093 R)

Planet 7 - Gas Giant

Semi-Major Axis: 1.95 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 409.2

Radius: 10.8

Gravity: 3.51 G

Time & Orbit

Eccentricity (e): 0.08

Orbit Range: 1.79 AU - 2.11 AU

Year: 1758 Days

Day: 13.7 Hours

Environment

Temp: -189 °C

Axial Tilt: 18.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 60,052,947 km

• M1: 134,339 km (0.112 R)
• M2: 560,693 km (0.11 R)
• M3: 930,499 km (0.097 R)
• M4: 1,573,171 km (0.041 R)
• M5: 2,064,600 km (0.114 R)
• M6: 2,480,333 km (0.109 R)
• M7: 2,882,751 km (0.039 R)
• M8: 3,343,961 km (0.071 R)
• M9: 4,006,680 km (0.057 R)
• M10: 4,735,521 km (0.069 R)
• M11: 6,845,449 km (0.113 R)
• M12: 7,301,722 km (0.106 R)
• M13: 7,886,949 km (0.12 R)
• M14: 8,445,847 km (0.077 R)
• M15: 9,580,547 km (0.099 R)
• M16: 10,023,207 km (0.076 R)
• M17: 10,413,508 km (0.118 R)
• M18: 11,469,070 km (0.071 R)

Planet 8 - Gas Giant

Semi-Major Axis: 2.63 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 29.7

Radius: 14.9

Gravity: 0.13 G

Time & Orbit

Eccentricity (e): 0.039

Orbit Range: 2.53 AU - 2.73 AU

Year: 2754 Days

Day: 5.7 Hours

Environment

Temp: -194 °C

Axial Tilt: 100.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 60,052,947 km

• M1: 191,485 km (0.103 R)
• M2: 695,929 km (0.069 R)
• M3: 1,236,576 km (0.027 R)
• M4: 1,738,028 km (0.103 R)
• M5: 2,329,987 km (0.086 R)
• M6: 4,539,847 km (0.089 R)
• M7: 5,503,706 km (0.091 R)
• M8: 6,118,852 km (0.03 R)
• M9: 7,065,507 km (0.033 R)

Planet 9 - Ice Giant

Semi-Major Axis: 9.52 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 374.5

Radius: 7.5

Gravity: 6.66 G

Time & Orbit

Eccentricity (e): 0.173

Orbit Range: 7.87 AU - 11.17 AU

Year: 18966 Days

Day: 20.2 Hours

Environment

Temp: -233 °C

Axial Tilt: 1.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (31)

Outer Limit: 60,052,947 km

• M1: 93,947 km (0.032 R)
• M2: 367,562 km (0.046 R)
• M3: 640,728 km (0.112 R)
• M4: 975,079 km (0.107 R)
• M5: 1,664,127 km (0.028 R)
• M6: 1,967,362 km (0.104 R)
• M7: 2,327,294 km (0.077 R)
• M8: 2,914,167 km (0.1 R)
• M9: 3,788,566 km (0.06 R)
• M10: 7,907,444 km (0.064 R)
• M11: 8,524,087 km (0.095 R)
• M12: 8,769,577 km (0.101 R)
• M13: 10,069,133 km (0.054 R)
• M14: 10,510,746 km (0.073 R)
• M15: 12,345,265 km (0.111 R)
• M16: 15,014,689 km (0.091 R)
• M17: 16,257,549 km (0.049 R)
• M18: 16,559,736 km (0.069 R)
• M19: 17,019,899 km (0.12 R)
• M20: 18,863,394 km (0.067 R)
• M21: 21,192,782 km (0.037 R)
• M22: 23,322,906 km (0.092 R)
• M23: 25,388,703 km (0.057 R)
• M24: 31,958,294 km (0.117 R)
• M25: 37,965,546 km (0.046 R)
• M26: 39,034,722 km (0.106 R)
• M27: 47,088,323 km (0.103 R)
• M28: 52,317,218 km (0.106 R)
• M29: 54,986,343 km (0.064 R)
• M30: 56,526,902 km (0.073 R)
• M31: 59,158,029 km (0.066 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: 526 - 20,443 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit