🌌 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: 0.22

Radius: 0.55

Gravity: 0.73 G

Time & Orbit

Eccentricity (e): 0.144

Orbit Range: 0.46 AU - 0.62 AU

Year: 256 Days

Day: 42 Hours

Environment

Temp: -111 °C

Axial Tilt: 29.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.9 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 291.6

Radius: 14.6

Gravity: 1.37 G

Time & Orbit

Eccentricity (e): 0.108

Orbit Range: 0.8 AU - 1 AU

Year: 551 Days

Day: 9.8 Hours

Environment

Temp: -154 °C

Axial Tilt: 35.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 79,528,141 km

• M1: 181,612 km (0.093 R)
• M2: 742,604 km (0.101 R)
• M3: 1,254,229 km (0.087 R)
• M4: 1,910,814 km (0.077 R)
• M5: 2,510,103 km (0.107 R)
• M6: 3,158,909 km (0.09 R)
• M7: 4,395,634 km (0.106 R)
• M8: 5,117,893 km (0.081 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.38 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 374.9

Radius: 10.5

Gravity: 3.4 G

Time & Orbit

Eccentricity (e): 0.223

Orbit Range: 1.07 AU - 1.69 AU

Year: 1047 Days

Day: 11.6 Hours

Environment

Temp: -178 °C

Axial Tilt: 3.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 79,528,141 km

• M1: 131,497 km (0.066 R)
• M2: 514,317 km (0.119 R)
• M3: 866,321 km (0.11 R)
• M4: 1,542,204 km (0.066 R)
• M5: 2,563,210 km (0.091 R)
• M6: 3,136,170 km (0.075 R)
• M7: 3,778,244 km (0.113 R)
• M8: 4,248,280 km (0.076 R)
• M9: 4,655,486 km (0.113 R)
• M10: 5,778,966 km (0.118 R)
• M11: 6,218,484 km (0.103 R)
• M12: 6,897,359 km (0.119 R)
• M13: 7,910,885 km (0.071 R)
• M14: 8,554,754 km (0.056 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.45 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 984.6

Radius: 9.8

Gravity: 10.25 G

Time & Orbit

Eccentricity (e): 0.102

Orbit Range: 1.3 AU - 1.6 AU

Year: 1127 Days

Day: 13.8 Hours

Environment

Temp: -169 °C

Axial Tilt: 32.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 79,528,141 km

• M1: 121,922 km (0.029 R)
• M2: 512,672 km (0.094 R)
• M3: 835,355 km (0.111 R)
• M4: 1,362,687 km (0.073 R)
• M5: 1,741,618 km (0.119 R)
• M6: 2,079,560 km (0.084 R)
• M7: 3,001,681 km (0.059 R)
• M8: 3,430,130 km (0.111 R)
• M9: 5,719,127 km (0.099 R)
• M10: 6,054,824 km (0.044 R)
• M11: 6,380,050 km (0.087 R)
• M12: 6,914,862 km (0.089 R)
• M13: 8,440,162 km (0.115 R)
• M14: 8,817,298 km (0.077 R)
• M15: 9,668,062 km (0.047 R)
• M16: 10,406,925 km (0.06 R)
• M17: 10,976,893 km (0.085 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.67 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 647.3

Radius: 14.7

Gravity: 3 G

Time & Orbit

Eccentricity (e): 0.01

Orbit Range: 1.65 AU - 1.69 AU

Year: 1393 Days

Day: 14.8 Hours

Environment

Temp: -176 °C

Axial Tilt: 5.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 79,528,141 km

• M1: 183,257 km (0.053 R)
• M2: 712,385 km (0.096 R)
• M3: 1,237,025 km (0.096 R)
• M4: 2,370,977 km (0.06 R)
• M5: 3,210,071 km (0.101 R)
• M6: 3,748,623 km (0.088 R)
• M7: 4,383,666 km (0.052 R)
• M8: 5,211,391 km (0.059 R)
• M9: 6,164,031 km (0.111 R)
• M10: 7,052,642 km (0.083 R)
• M11: 7,594,037 km (0.065 R)
• M12: 8,387,504 km (0.072 R)
• M13: 8,966,448 km (0.12 R)
• M14: 12,272,411 km (0.091 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.89 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 54.9

Radius: 9.4

Gravity: 0.62 G

Time & Orbit

Eccentricity (e): 0.179

Orbit Range: 1.55 AU - 2.23 AU

Year: 1678 Days

Day: 8.4 Hours

Environment

Temp: -179 °C

Axial Tilt: 15.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 79,528,141 km

• M1: 120,725 km (0.101 R)
• M2: 721,361 km (0.108 R)
• M3: 1,295,966 km (0.073 R)
• M4: 2,065,348 km (0.041 R)
• M5: 3,067,205 km (0.115 R)
• M6: 4,137,578 km (0.105 R)
• M7: 5,782,556 km (0.088 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.77 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 879.7

Radius: 14

Gravity: 4.49 G

Time & Orbit

Eccentricity (e): 0.045

Orbit Range: 3.6 AU - 3.94 AU

Year: 4726 Days

Day: 13.6 Hours

Environment

Temp: -202 °C

Axial Tilt: 23.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 79,528,141 km

• M1: 174,132 km (0.111 R)
• M2: 701,614 km (0.109 R)
• M3: 1,522,009 km (0.114 R)
• M4: 2,097,063 km (0.115 R)
• M5: 2,604,649 km (0.092 R)
• M6: 3,254,202 km (0.103 R)
• M7: 4,418,523 km (0.042 R)
• M8: 5,097,099 km (0.049 R)
• M9: 5,754,581 km (0.077 R)
• M10: 7,067,303 km (0.07 R)
• M11: 7,960,701 km (0.118 R)
• M12: 9,336,553 km (0.089 R)
• M13: 11,143,545 km (0.09 R)
• M14: 11,908,589 km (0.108 R)
• M15: 12,555,749 km (0.065 R)
• M16: 14,582,950 km (0.057 R)
• M17: 15,208,568 km (0.118 R)
• M18: 16,090,448 km (0.101 R)
• M19: 20,948,190 km (0.1 R)
• M20: 21,966,203 km (0.084 R)
• M21: 27,642,994 km (0.079 R)
• M22: 28,956,463 km (0.071 R)
• M23: 31,237,232 km (0.095 R)

Planet 8 - Ice Giant

Semi-Major Axis: 11.3 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 520.1

Radius: 6.5

Gravity: 12.31 G

Time & Orbit

Eccentricity (e): 0.017

Orbit Range: 11.11 AU - 11.49 AU

Year: 24526 Days

Day: 20.7 Hours

Environment

Temp: -227 °C

Axial Tilt: 17.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (30)

Outer Limit: 79,528,141 km

• M1: 80,783 km (0.07 R)
• M2: 303,534 km (0.1 R)
• M3: 544,237 km (0.112 R)
• M4: 1,072,916 km (0.092 R)
• M5: 1,429,408 km (0.087 R)
• M6: 1,998,478 km (0.092 R)
• M7: 3,457,955 km (0.026 R)
• M8: 4,405,956 km (0.042 R)
• M9: 5,397,790 km (0.088 R)
• M10: 7,176,659 km (0.097 R)
• M11: 7,713,416 km (0.116 R)
• M12: 8,649,300 km (0.064 R)
• M13: 10,496,086 km (0.115 R)
• M14: 11,123,350 km (0.079 R)
• M15: 13,155,188 km (0.095 R)
• M16: 13,736,226 km (0.037 R)
• M17: 20,615,933 km (0.026 R)
• M18: 21,300,343 km (0.101 R)
• M19: 23,129,925 km (0.063 R)
• M20: 23,762,275 km (0.098 R)
• M21: 24,951,578 km (0.086 R)
• M22: 34,136,738 km (0.098 R)
• M23: 40,910,530 km (0.086 R)
• M24: 41,679,912 km (0.048 R)
• M25: 44,691,765 km (0.037 R)
• M26: 47,001,557 km (0.092 R)
• M27: 49,911,983 km (0.107 R)
• M28: 51,322,093 km (0.107 R)
• M29: 64,812,978 km (0.098 R)
• M30: 74,399,060 km (0.114 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: 367 - 14,897 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit