🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.48 AU

Composition

Type: Main (Rocky/Icy Mix)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Gas Giant

Semi-Major Axis: 0.95 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 871.6

Radius: 8.6

Gravity: 11.78 G

Time & Orbit

Eccentricity (e): 0.237

Orbit Range: 0.72 AU - 1.18 AU

Year: 628 Days

Day: 7.4 Hours

Environment

Temp: -174 °C

Axial Tilt: 0.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 70,811,861 km

• M1: 107,710 km (0.055 R)
• M2: 400,623 km (0.078 R)
• M3: 702,811 km (0.039 R)
• M4: 1,083,388 km (0.106 R)
• M5: 1,560,007 km (0.077 R)
• M6: 2,009,399 km (0.088 R)
• M7: 2,351,828 km (0.116 R)
• M8: 2,642,497 km (0.116 R)
• M9: 3,323,018 km (0.081 R)
• M10: 4,100,328 km (0.118 R)
• M11: 4,738,213 km (0.112 R)
• M12: 5,330,920 km (0.059 R)
• M13: 5,816,964 km (0.077 R)
• M14: 6,130,371 km (0.078 R)
• M15: 6,855,771 km (0.096 R)
• M16: 7,660,458 km (0.045 R)

Planet 2 - Gas Giant

Semi-Major Axis: 1.01 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 55.4

Radius: 10.3

Gravity: 0.52 G

Time & Orbit

Eccentricity (e): 0.21

Orbit Range: 0.8 AU - 1.22 AU

Year: 688 Days

Day: 9.4 Hours

Environment

Temp: -185 °C

Axial Tilt: 44.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (5)

Outer Limit: 70,811,861 km

• M1: 130,898 km (0.054 R)
• M2: 782,397 km (0.062 R)
• M3: 1,263,803 km (0.083 R)
• M4: 3,049,253 km (0.045 R)
• M5: 3,402,155 km (0.092 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.41 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 731.7

Radius: 10.1

Gravity: 7.17 G

Time & Orbit

Eccentricity (e): 0.087

Orbit Range: 1.29 AU - 1.53 AU

Year: 1136 Days

Day: 11.9 Hours

Environment

Temp: -196 °C

Axial Tilt: 43.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 70,811,861 km

• M1: 127,158 km (0.078 R)
• M2: 448,046 km (0.103 R)
• M3: 836,701 km (0.094 R)
• M4: 1,606,681 km (0.089 R)
• M5: 2,016,430 km (0.078 R)
• M6: 3,035,490 km (0.048 R)
• M7: 3,543,674 km (0.112 R)
• M8: 3,940,707 km (0.107 R)
• M9: 4,297,049 km (0.06 R)
• M10: 4,977,869 km (0.105 R)
• M11: 8,803,087 km (0.084 R)
• M12: 10,887,434 km (0.095 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.51 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 443.3

Radius: 9.5

Gravity: 4.91 G

Time & Orbit

Eccentricity (e): 0.035

Orbit Range: 1.46 AU - 1.56 AU

Year: 1259 Days

Day: 9.7 Hours

Environment

Temp: -189 °C

Axial Tilt: 14.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 70,811,861 km

• M1: 118,182 km (0.108 R)
• M2: 512,074 km (0.051 R)
• M3: 838,047 km (0.041 R)
• M4: 1,166,564 km (0.085 R)
• M5: 1,703,321 km (0.107 R)
• M6: 3,664,101 km (0.109 R)
• M7: 4,601,331 km (0.089 R)
• M8: 4,909,802 km (0.088 R)
• M9: 5,290,529 km (0.088 R)
• M10: 6,642,893 km (0.112 R)
• M11: 7,014,345 km (0.115 R)
• M12: 7,926,593 km (0.063 R)
• M13: 9,339,993 km (0.094 R)
• M14: 10,015,877 km (0.063 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.87 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 188.3

Radius: 9.4

Gravity: 2.13 G

Time & Orbit

Eccentricity (e): 0.135

Orbit Range: 1.62 AU - 2.12 AU

Year: 1734 Days

Day: 7.3 Hours

Environment

Temp: -192 °C

Axial Tilt: 48.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 70,811,861 km

• M1: 116,836 km (0.074 R)
• M2: 541,694 km (0.044 R)
• M3: 1,387,221 km (0.109 R)
• M4: 1,762,861 km (0.091 R)
• M5: 3,290,106 km (0.056 R)
• M6: 4,337,141 km (0.091 R)
• M7: 5,112,358 km (0.066 R)
• M8: 5,572,521 km (0.104 R)
• M9: 6,336,218 km (0.108 R)
• M10: 6,665,034 km (0.101 R)
• M11: 7,121,158 km (0.044 R)
• M12: 8,802,788 km (0.077 R)
• M13: 9,240,660 km (0.075 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.11 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 428.1

Radius: 9.7

Gravity: 4.55 G

Time & Orbit

Eccentricity (e): 0.1

Orbit Range: 1.9 AU - 2.32 AU

Year: 2079 Days

Day: 6.6 Hours

Environment

Temp: -211 °C

Axial Tilt: 38.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 70,811,861 km

• M1: 121,174 km (0.025 R)
• M2: 430,393 km (0.108 R)
• M3: 1,054,067 km (0.118 R)
• M4: 1,463,965 km (0.083 R)
• M5: 4,091,352 km (0.079 R)
• M6: 5,443,418 km (0.119 R)
• M7: 5,946,366 km (0.1 R)
• M8: 6,405,482 km (0.119 R)
• M9: 7,205,232 km (0.067 R)
• M10: 12,385,956 km (0.093 R)

Planet 7 - Ice Giant

Semi-Major Axis: 5.95 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 200.6

Radius: 5.1

Gravity: 7.71 G

Time & Orbit

Eccentricity (e): 0.146

Orbit Range: 5.08 AU - 6.82 AU

Year: 9844 Days

Day: 21.9 Hours

Environment

Temp: -233 °C

Axial Tilt: 4.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 70,811,861 km

• M1: 67,319 km (0.111 R)
• M2: 226,192 km (0.074 R)
• M3: 548,725 km (0.045 R)
• M4: 1,083,837 km (0.106 R)
• M5: 1,694,794 km (0.032 R)
• M6: 2,545,408 km (0.063 R)
• M7: 3,496,701 km (0.077 R)
• M8: 3,922,456 km (0.07 R)
• M9: 6,165,078 km (0.082 R)
• M10: 8,188,688 km (0.065 R)
• M11: 10,255,981 km (0.11 R)
• M12: 11,553,743 km (0.1 R)
• M13: 12,957,270 km (0.101 R)
• M14: 16,400,863 km (0.116 R)
• M15: 17,206,298 km (0.109 R)
• M16: 19,988,220 km (0.086 R)
• M17: 22,299,059 km (0.113 R)
• M18: 23,518,580 km (0.115 R)
• M19: 25,593,952 km (0.11 R)
• M20: 26,676,143 km (0.057 R)
• M21: 29,289,169 km (0.118 R)
• M22: 29,831,461 km (0.108 R)

Planet 8 - Ice Giant

Semi-Major Axis: 9.88 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 497.8

Radius: 7.9

Gravity: 7.98 G

Time & Orbit

Eccentricity (e): 0.177

Orbit Range: 8.13 AU - 11.63 AU

Year: 21063 Days

Day: 21.9 Hours

Environment

Temp: -238 °C

Axial Tilt: 41.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 70,811,861 km

• M1: 104,719 km (0.085 R)
• M2: 517,609 km (0.115 R)
• M3: 1,459,327 km (0.064 R)
• M4: 1,787,395 km (0.053 R)
• M5: 2,639,505 km (0.082 R)
• M6: 5,188,952 km (0.073 R)
• M7: 6,163,133 km (0.119 R)
• M8: 7,254,150 km (0.112 R)
• M9: 9,700,973 km (0.048 R)
• M10: 13,682,371 km (0.072 R)
• M11: 14,327,886 km (0.108 R)
• M12: 15,835,234 km (0.077 R)
• M13: 16,227,928 km (0.062 R)
• M14: 22,826,989 km (0.112 R)
• M15: 25,621,927 km (0.087 R)
• M16: 31,880,802 km (0.089 R)
• M17: 39,230,246 km (0.119 R)
• M18: 48,452,058 km (0.106 R)
• M19: 51,476,777 km (0.069 R)
• M20: 54,982,753 km (0.112 R)
• M21: 66,857,233 km (0.104 R)
• M22: 69,128,278 km (0.119 R)

Kuiper Belt

Range: 30 - 59 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 373 - 16,367 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit