🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.28 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.55 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.53

Radius: 1.83

Gravity: 1.35 G

Time & Orbit

Eccentricity (e): 0.223

Orbit Range: 0.43 AU - 0.67 AU

Year: 268 Days

Day: 17.6 Hours

Environment

Temp: -116 °C

Axial Tilt: 17.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 43,286,076 km

• M1: 725,550 km (0.106 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.76 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 528

Radius: 14.1

Gravity: 2.66 G

Time & Orbit

Eccentricity (e): 0.028

Orbit Range: 0.74 AU - 0.78 AU

Year: 435 Days

Day: 14.8 Hours

Environment

Temp: -144 °C

Axial Tilt: 25 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 43,286,076 km

• M1: 175,329 km (0.094 R)
• M2: 629,358 km (0.094 R)
• M3: 1,266,196 km (0.118 R)
• M4: 1,887,476 km (0.104 R)
• M5: 2,483,325 km (0.042 R)
• M6: 3,021,578 km (0.086 R)
• M7: 3,542,926 km (0.117 R)
• M8: 4,020,892 km (0.036 R)
• M9: 4,486,739 km (0.083 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.82 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 583.2

Radius: 12.5

Gravity: 3.73 G

Time & Orbit

Eccentricity (e): 0.166

Orbit Range: 0.68 AU - 0.96 AU

Year: 487 Days

Day: 12.4 Hours

Environment

Temp: -156 °C

Axial Tilt: 0.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 43,286,076 km

• M1: 155,432 km (0.092 R)
• M2: 553,512 km (0.099 R)
• M3: 1,000,062 km (0.119 R)
• M4: 1,548,936 km (0.076 R)
• M5: 1,987,408 km (0.105 R)
• M6: 2,386,684 km (0.114 R)
• M7: 3,144,398 km (0.094 R)
• M8: 3,629,843 km (0.086 R)
• M9: 4,797,903 km (0.108 R)
• M10: 5,527,193 km (0.038 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.21 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 228.3

Radius: 8.7

Gravity: 3.02 G

Time & Orbit

Eccentricity (e): 0.24

Orbit Range: 0.92 AU - 1.5 AU

Year: 873 Days

Day: 13 Hours

Environment

Temp: -167 °C

Axial Tilt: 2.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 43,286,076 km

• M1: 112,198 km (0.092 R)
• M2: 633,996 km (0.041 R)
• M3: 1,504,655 km (0.05 R)
• M4: 2,683,337 km (0.113 R)
• M5: 3,056,284 km (0.106 R)
• M6: 3,564,917 km (0.117 R)
• M7: 3,934,424 km (0.073 R)
• M8: 4,813,162 km (0.12 R)
• M9: 5,332,566 km (0.114 R)
• M10: 6,051,982 km (0.102 R)
• M11: 6,444,826 km (0.087 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.26 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 370.3

Radius: 12.5

Gravity: 2.37 G

Time & Orbit

Eccentricity (e): 0.196

Orbit Range: 1.01 AU - 1.51 AU

Year: 928 Days

Day: 7.5 Hours

Environment

Temp: -160 °C

Axial Tilt: 150.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 43,286,076 km

• M1: 157,676 km (0.083 R)
• M2: 582,684 km (0.085 R)
• M3: 985,850 km (0.092 R)
• M4: 1,541,008 km (0.096 R)
• M5: 2,016,579 km (0.03 R)
• M6: 3,271,257 km (0.098 R)
• M7: 3,879,372 km (0.092 R)
• M8: 4,593,851 km (0.061 R)
• M9: 5,146,616 km (0.062 R)
• M10: 6,345,942 km (0.095 R)
• M11: 7,451,021 km (0.071 R)

Planet 6 - Gas Giant

Semi-Major Axis: 5.82 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 741.4

Radius: 14.3

Gravity: 3.63 G

Time & Orbit

Eccentricity (e): 0.162

Orbit Range: 4.88 AU - 6.76 AU

Year: 9211 Days

Day: 13.5 Hours

Environment

Temp: -212 °C

Axial Tilt: 24.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 43,286,076 km

• M1: 177,872 km (0.113 R)
• M2: 947,403 km (0.055 R)
• M3: 1,587,383 km (0.1 R)
• M4: 2,219,284 km (0.1 R)
• M5: 4,050,961 km (0.105 R)
• M6: 5,772,832 km (0.097 R)
• M7: 7,815,591 km (0.081 R)
• M8: 8,955,078 km (0.105 R)
• M9: 9,564,989 km (0.089 R)
• M10: 10,202,575 km (0.106 R)
• M11: 10,868,435 km (0.05 R)
• M12: 13,219,964 km (0.081 R)
• M13: 14,011,935 km (0.118 R)
• M14: 14,835,471 km (0.098 R)
• M15: 17,285,136 km (0.053 R)
• M16: 20,631,790 km (0.052 R)
• M17: 21,119,330 km (0.098 R)
• M18: 27,587,792 km (0.095 R)
• M19: 29,287,972 km (0.083 R)
• M20: 34,124,471 km (0.116 R)
• M21: 35,151,909 km (0.097 R)
• M22: 37,268,719 km (0.069 R)
• M23: 45,347,154 km (0.073 R)

Planet 7 - Ice Giant

Semi-Major Axis: 5.95 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 556.5

Radius: 4.7

Gravity: 25.19 G

Time & Orbit

Eccentricity (e): 0.041

Orbit Range: 5.71 AU - 6.19 AU

Year: 9521 Days

Day: 15.2 Hours

Environment

Temp: -224 °C

Axial Tilt: 42.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 43,286,076 km

• M1: 59,690 km (0.109 R)
• M2: 374,144 km (0.104 R)
• M3: 671,096 km (0.091 R)
• M4: 1,112,709 km (0.071 R)
• M5: 1,818,213 km (0.104 R)
• M6: 2,583,406 km (0.078 R)
• M7: 2,908,781 km (0.082 R)
• M8: 4,575,152 km (0.08 R)
• M9: 6,349,382 km (0.081 R)
• M10: 7,408,535 km (0.07 R)
• M11: 9,774,126 km (0.083 R)
• M12: 11,929,832 km (0.115 R)
• M13: 13,831,221 km (0.082 R)
• M14: 19,870,337 km (0.077 R)
• M15: 21,860,737 km (0.088 R)
• M16: 28,133,076 km (0.115 R)
• M17: 32,419,205 km (0.118 R)
• M18: 37,237,902 km (0.062 R)
• M19: 38,423,166 km (0.107 R)
• M20: 40,868,642 km (0.114 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: 474 - 18,450 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit