🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.29 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.57 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.11

Radius: 1.76

Gravity: 1.33 G

Time & Orbit

Eccentricity (e): 0.22

Orbit Range: 0.44 AU - 0.7 AU

Year: 282 Days

Day: 17.1 Hours

Environment

Temp: -125 °C

Axial Tilt: 23.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.68 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 894.3

Radius: 12.6

Gravity: 5.63 G

Time & Orbit

Eccentricity (e): 0.244

Orbit Range: 0.51 AU - 0.85 AU

Year: 368 Days

Day: 10.8 Hours

Environment

Temp: -145 °C

Axial Tilt: 34.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 64,567,114 km

• M1: 156,629 km (0.05 R)
• M2: 595,549 km (0.079 R)
• M3: 1,039,556 km (0.078 R)
• M4: 1,506,899 km (0.065 R)
• M5: 1,984,715 km (0.06 R)
• M6: 2,516,087 km (0.072 R)
• M7: 3,000,185 km (0.091 R)
• M8: 3,818,186 km (0.112 R)
• M9: 4,377,234 km (0.12 R)
• M10: 4,824,382 km (0.04 R)
• M11: 5,286,190 km (0.083 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.75 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 943.4

Radius: 11.2

Gravity: 7.52 G

Time & Orbit

Eccentricity (e): 0.152

Orbit Range: 0.64 AU - 0.86 AU

Year: 426 Days

Day: 10.8 Hours

Environment

Temp: -136 °C

Axial Tilt: 36 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 64,567,114 km

• M1: 139,276 km (0.068 R)
• M2: 808,726 km (0.098 R)
• M3: 1,192,744 km (0.103 R)
• M4: 1,831,826 km (0.043 R)
• M5: 2,194,601 km (0.045 R)
• M6: 2,575,477 km (0.053 R)
• M7: 4,317,245 km (0.056 R)
• M8: 5,495,029 km (0.089 R)
• M9: 6,003,961 km (0.045 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.15 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 714

Radius: 9.3

Gravity: 8.26 G

Time & Orbit

Eccentricity (e): 0.207

Orbit Range: 0.91 AU - 1.39 AU

Year: 809 Days

Day: 6.8 Hours

Environment

Temp: -171 °C

Axial Tilt: 17.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 64,567,114 km

• M1: 117,434 km (0.081 R)
• M2: 438,172 km (0.102 R)
• M3: 804,687 km (0.101 R)
• M4: 1,108,221 km (0.116 R)
• M5: 1,786,498 km (0.09 R)
• M6: 2,083,599 km (0.09 R)
• M7: 2,863,752 km (0.112 R)
• M8: 3,154,720 km (0.116 R)
• M9: 3,521,833 km (0.101 R)
• M10: 4,245,139 km (0.119 R)
• M11: 4,850,262 km (0.099 R)
• M12: 5,210,643 km (0.103 R)
• M13: 5,608,125 km (0.059 R)
• M14: 6,379,152 km (0.115 R)
• M15: 7,311,746 km (0.108 R)
• M16: 7,738,099 km (0.051 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.96 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 333.4

Radius: 14.7

Gravity: 1.54 G

Time & Orbit

Eccentricity (e): 0.031

Orbit Range: 2.87 AU - 3.05 AU

Year: 3341 Days

Day: 11.4 Hours

Environment

Temp: -205 °C

Axial Tilt: 32.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 64,567,114 km

• M1: 182,809 km (0.062 R)
• M2: 692,638 km (0.116 R)
• M3: 1,248,843 km (0.081 R)
• M4: 1,787,844 km (0.094 R)
• M5: 2,336,120 km (0.113 R)
• M6: 2,843,108 km (0.112 R)
• M7: 4,697,672 km (0.111 R)
• M8: 5,660,634 km (0.09 R)
• M9: 7,144,944 km (0.107 R)
• M10: 7,764,129 km (0.101 R)
• M11: 8,515,410 km (0.107 R)
• M12: 9,009,382 km (0.091 R)
• M13: 11,063,959 km (0.068 R)
• M14: 11,693,018 km (0.053 R)
• M15: 16,787,723 km (0.116 R)

Planet 6 - Gas Giant

Semi-Major Axis: 4.55 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 737.9

Radius: 12

Gravity: 5.12 G

Time & Orbit

Eccentricity (e): 0.079

Orbit Range: 4.19 AU - 4.91 AU

Year: 6367 Days

Day: 9.4 Hours

Environment

Temp: -204 °C

Axial Tilt: 0.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 64,567,114 km

• M1: 149,448 km (0.077 R)
• M2: 556,354 km (0.046 R)
• M3: 1,166,714 km (0.12 R)
• M4: 1,636,451 km (0.07 R)
• M5: 2,028,697 km (0.099 R)
• M6: 2,449,665 km (0.029 R)
• M7: 3,814,147 km (0.094 R)
• M8: 4,649,203 km (0.05 R)
• M9: 5,633,108 km (0.065 R)
• M10: 6,891,525 km (0.075 R)
• M11: 7,701,298 km (0.073 R)
• M12: 8,532,315 km (0.072 R)
• M13: 9,867,326 km (0.12 R)
• M14: 11,738,795 km (0.085 R)
• M15: 13,442,715 km (0.118 R)
• M16: 14,007,597 km (0.064 R)
• M17: 14,824,850 km (0.078 R)
• M18: 20,190,776 km (0.09 R)
• M19: 21,768,285 km (0.057 R)
• M20: 23,024,309 km (0.062 R)
• M21: 23,588,742 km (0.105 R)
• M22: 26,375,152 km (0.062 R)
• M23: 26,815,568 km (0.098 R)
• M24: 28,905,600 km (0.118 R)

Planet 7 - Ice Giant

Semi-Major Axis: 10.79 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 309.7

Radius: 6.5

Gravity: 7.33 G

Time & Orbit

Eccentricity (e): 0.248

Orbit Range: 8.11 AU - 13.47 AU

Year: 23251 Days

Day: 21 Hours

Environment

Temp: -241 °C

Axial Tilt: 143.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 64,567,114 km

• M1: 80,932 km (0.046 R)
• M2: 758,162 km (0.033 R)
• M3: 1,125,126 km (0.04 R)
• M4: 2,775,190 km (0.117 R)
• M5: 3,400,509 km (0.064 R)
• M6: 4,689,893 km (0.098 R)
• M7: 5,066,132 km (0.1 R)
• M8: 5,499,517 km (0.03 R)
• M9: 5,840,450 km (0.12 R)
• M10: 6,564,654 km (0.087 R)
• M11: 8,093,394 km (0.05 R)
• M12: 9,095,850 km (0.095 R)
• M13: 15,449,720 km (0.086 R)
• M14: 18,620,447 km (0.066 R)
• M15: 20,178,958 km (0.059 R)
• M16: 23,850,538 km (0.09 R)
• M17: 27,394,960 km (0.112 R)
• M18: 29,982,106 km (0.037 R)
• M19: 39,543,804 km (0.115 R)
• M20: 44,628,486 km (0.107 R)
• M21: 47,879,247 km (0.067 R)
• M22: 56,071,077 km (0.12 R)

Kuiper Belt

Range: 30 - 50 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 202 - 10,495 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit