🌌 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: 1.8

Radius: 1.27

Gravity: 1.12 G

Time & Orbit

Eccentricity (e): 0.161

Orbit Range: 0.44 AU - 0.6 AU

Year: 242 Days

Day: 34.8 Hours

Environment

Temp: -128 °C

Axial Tilt: 20 °

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: 777.1

Radius: 12.8

Gravity: 4.74 G

Time & Orbit

Eccentricity (e): 0.188

Orbit Range: 0.63 AU - 0.93 AU

Year: 445 Days

Day: 11.2 Hours

Environment

Temp: -136 °C

Axial Tilt: 15 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 20,919,599 km

• M1: 159,322 km (0.079 R)
• M2: 562,488 km (0.066 R)
• M3: 989,740 km (0.059 R)
• M4: 1,434,644 km (0.062 R)
• M5: 2,442,185 km (0.078 R)
• M6: 3,061,820 km (0.088 R)
• M7: 3,581,223 km (0.114 R)
• M8: 4,214,770 km (0.119 R)
• M9: 4,844,877 km (0.074 R)
• M10: 6,040,313 km (0.089 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.84 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 858.1

Radius: 14.2

Gravity: 4.26 G

Time & Orbit

Eccentricity (e): 0.122

Orbit Range: 0.74 AU - 0.94 AU

Year: 497 Days

Day: 13.5 Hours

Environment

Temp: -145 °C

Axial Tilt: 5.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 20,919,599 km

• M1: 176,525 km (0.073 R)
• M2: 1,196,035 km (0.089 R)
• M3: 1,775,876 km (0.118 R)
• M4: 2,902,348 km (0.118 R)
• M5: 3,662,754 km (0.097 R)
• M6: 4,629,456 km (0.08 R)
• M7: 5,922,729 km (0.112 R)
• M8: 6,546,104 km (0.108 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.94 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 330.1

Radius: 9.4

Gravity: 3.74 G

Time & Orbit

Eccentricity (e): 0.175

Orbit Range: 0.78 AU - 1.1 AU

Year: 588 Days

Day: 9.5 Hours

Environment

Temp: -151 °C

Axial Tilt: 8.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 20,919,599 km

• M1: 117,135 km (0.084 R)
• M2: 695,032 km (0.108 R)
• M3: 1,008,439 km (0.09 R)
• M4: 1,618,051 km (0.098 R)
• M5: 2,076,418 km (0.108 R)
• M6: 2,382,496 km (0.067 R)
• M7: 2,739,137 km (0.07 R)
• M8: 5,230,540 km (0.054 R)
• M9: 5,618,746 km (0.045 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.14 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 957.5

Radius: 11.5

Gravity: 7.24 G

Time & Orbit

Eccentricity (e): 0.191

Orbit Range: 0.92 AU - 1.36 AU

Year: 786 Days

Day: 5.8 Hours

Environment

Temp: -166 °C

Axial Tilt: 31.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 20,919,599 km

• M1: 144,212 km (0.045 R)
• M2: 547,827 km (0.095 R)
• M3: 1,643,632 km (0.099 R)
• M4: 2,103,047 km (0.087 R)
• M5: 2,903,695 km (0.093 R)
• M6: 3,990,673 km (0.118 R)
• M7: 4,515,462 km (0.042 R)
• M8: 5,408,113 km (0.061 R)
• M9: 5,927,516 km (0.112 R)
• M10: 6,928,326 km (0.113 R)
• M11: 7,713,266 km (0.118 R)
• M12: 8,089,206 km (0.115 R)
• M13: 9,096,897 km (0.085 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.41 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 741

Radius: 8.6

Gravity: 10.02 G

Time & Orbit

Eccentricity (e): 0.188

Orbit Range: 1.14 AU - 1.68 AU

Year: 1081 Days

Day: 10 Hours

Environment

Temp: -170 °C

Axial Tilt: 103.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 20,919,599 km

• M1: 107,411 km (0.103 R)
• M2: 388,057 km (0.101 R)
• M3: 799,002 km (0.075 R)
• M4: 1,088,025 km (0.118 R)
• M5: 1,448,257 km (0.112 R)
• M6: 1,716,486 km (0.092 R)
• M7: 2,679,447 km (0.098 R)
• M8: 2,965,479 km (0.099 R)
• M9: 3,568,956 km (0.1 R)
• M10: 6,182,431 km (0.08 R)
• M11: 6,732,353 km (0.113 R)
• M12: 8,035,500 km (0.098 R)
• M13: 8,746,838 km (0.036 R)

Planet 7 - Gas Giant

Semi-Major Axis: 1.76 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 979.7

Radius: 9.5

Gravity: 10.86 G

Time & Orbit

Eccentricity (e): 0.029

Orbit Range: 1.71 AU - 1.81 AU

Year: 1508 Days

Day: 5 Hours

Environment

Temp: -191 °C

Axial Tilt: 34.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 20,919,599 km

• M1: 118,182 km (0.056 R)
• M2: 423,661 km (0.119 R)
• M3: 720,015 km (0.115 R)
• M4: 1,104,331 km (0.094 R)
• M5: 1,615,059 km (0.055 R)
• M6: 2,108,133 km (0.066 R)
• M7: 2,713,107 km (0.109 R)
• M8: 3,079,771 km (0.087 R)
• M9: 3,529,762 km (0.094 R)
• M10: 4,683,610 km (0.05 R)
• M11: 5,083,036 km (0.049 R)
• M12: 5,878,748 km (0.055 R)
• M13: 6,650,972 km (0.097 R)
• M14: 7,238,742 km (0.118 R)
• M15: 8,672,637 km (0.113 R)
• M16: 8,987,092 km (0.094 R)
• M17: 10,148,420 km (0.104 R)
• M18: 10,675,603 km (0.099 R)
• M19: 11,632,581 km (0.118 R)
• M20: 12,847,016 km (0.048 R)
• M21: 15,161,445 km (0.03 R)

Planet 8 - Gas Giant

Semi-Major Axis: 1.99 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 137.2

Radius: 10.8

Gravity: 1.18 G

Time & Orbit

Eccentricity (e): 0.092

Orbit Range: 1.81 AU - 2.17 AU

Year: 1813 Days

Day: 6.6 Hours

Environment

Temp: -199 °C

Axial Tilt: 83.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 20,919,599 km

• M1: 134,339 km (0.086 R)
• M2: 623,674 km (0.115 R)
• M3: 1,162,525 km (0.037 R)
• M4: 1,535,323 km (0.116 R)
• M5: 2,253,243 km (0.1 R)
• M6: 2,904,143 km (0.069 R)
• M7: 3,341,418 km (0.087 R)
• M8: 4,221,054 km (0.108 R)
• M9: 5,066,581 km (0.061 R)
• M10: 5,472,739 km (0.075 R)
• M11: 6,143,386 km (0.098 R)
• M12: 7,251,158 km (0.041 R)
• M13: 8,060,632 km (0.117 R)
• M14: 8,487,435 km (0.094 R)

Asteroid Belt

Center: 3.39 AU

Composition

Type: Outer System (Icy)

A dense region of planetesimals and debris.

Boundary

Planet 9 - Gas Giant

Semi-Major Axis: 4.79 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 416.2

Radius: 10.2

Gravity: 4 G

Time & Orbit

Eccentricity (e): 0.107

Orbit Range: 4.28 AU - 5.3 AU

Year: 6769 Days

Day: 8.9 Hours

Environment

Temp: -222 °C

Axial Tilt: 32.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 20,919,599 km

• M1: 126,859 km (0.091 R)
• M2: 643,720 km (0.077 R)
• M3: 1,055,413 km (0.109 R)
• M4: 2,370,827 km (0.062 R)
• M5: 3,141,106 km (0.1 R)
• M6: 4,335,197 km (0.109 R)
• M7: 6,052,730 km (0.074 R)
• M8: 7,236,947 km (0.113 R)
• M9: 13,972,890 km (0.084 R)
• M10: 15,378,960 km (0.112 R)
• M11: 17,001,200 km (0.093 R)
• M12: 23,154,908 km (0.067 R)
• M13: 24,877,378 km (0.104 R)
• M14: 25,688,049 km (0.102 R)
• M15: 26,599,848 km (0.097 R)
• M16: 29,825,627 km (0.095 R)

Planet 10 - Gas Giant

Semi-Major Axis: 5.48 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 83

Radius: 9.9

Gravity: 0.85 G

Time & Orbit

Eccentricity (e): 0.11

Orbit Range: 4.88 AU - 6.08 AU

Year: 8283 Days

Day: 6.3 Hours

Environment

Temp: -224 °C

Axial Tilt: 22.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 20,919,599 km

• M1: 134,638 km (0.088 R)
• M2: 630,256 km (0.114 R)
• M3: 999,613 km (0.099 R)
• M4: 4,222,849 km (0.083 R)
• M5: 4,570,365 km (0.073 R)
• M6: 5,273,774 km (0.116 R)
• M7: 5,887,275 km (0.059 R)
• M8: 7,503,680 km (0.08 R)
• M9: 8,346,963 km (0.1 R)
• M10: 11,800,729 km (0.041 R)
• M11: 14,734,642 km (0.092 R)
• M12: 19,576,976 km (0.108 R)

Kuiper Belt

Range: 30 - 57 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 237 - 13,496 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit