🌌 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: 0.58 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.1

Radius: 1.76

Gravity: 1.32 G

Time & Orbit

Eccentricity (e): 0.106

Orbit Range: 0.52 AU - 0.64 AU

Year: 290 Days

Day: 45.9 Hours

Environment

Temp: -134 °C

Axial Tilt: 41.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.81 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 883.2

Radius: 12.9

Gravity: 5.31 G

Time & Orbit

Eccentricity (e): 0.03

Orbit Range: 0.79 AU - 0.83 AU

Year: 478 Days

Day: 9.6 Hours

Environment

Temp: -142 °C

Axial Tilt: 33.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 43,833,966 km

• M1: 160,369 km (0.031 R)
• M2: 640,279 km (0.1 R)
• M3: 1,154,148 km (0.115 R)
• M4: 1,699,282 km (0.065 R)
• M5: 2,125,786 km (0.055 R)
• M6: 2,825,904 km (0.116 R)
• M7: 3,321,671 km (0.107 R)
• M8: 3,902,560 km (0.116 R)
• M9: 4,688,547 km (0.093 R)
• M10: 5,970,750 km (0.1 R)
• M11: 6,459,486 km (0.117 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.93 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 811.1

Radius: 14

Gravity: 4.14 G

Time & Orbit

Eccentricity (e): 0.145

Orbit Range: 0.8 AU - 1.06 AU

Year: 588 Days

Day: 10.4 Hours

Environment

Temp: -163 °C

Axial Tilt: 21.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 43,833,966 km

• M1: 174,132 km (0.036 R)
• M2: 782,696 km (0.112 R)
• M3: 1,228,199 km (0.111 R)
• M4: 1,793,379 km (0.052 R)
• M5: 2,252,046 km (0.099 R)
• M6: 2,701,738 km (0.095 R)
• M7: 3,311,648 km (0.103 R)
• M8: 3,870,396 km (0.054 R)
• M9: 5,009,434 km (0.108 R)
• M10: 5,603,039 km (0.103 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.98 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 532

Radius: 9.1

Gravity: 6.42 G

Time & Orbit

Eccentricity (e): 0.176

Orbit Range: 0.81 AU - 1.15 AU

Year: 636 Days

Day: 7.8 Hours

Environment

Temp: -154 °C

Axial Tilt: 36 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 43,833,966 km

• M1: 113,395 km (0.043 R)
• M2: 404,363 km (0.11 R)
• M3: 1,313,769 km (0.115 R)
• M4: 2,081,804 km (0.087 R)
• M5: 3,194,663 km (0.116 R)
• M6: 4,223,447 km (0.098 R)
• M7: 4,554,507 km (0.069 R)
• M8: 5,653,453 km (0.114 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.04 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 421.5

Radius: 11.3

Gravity: 3.3 G

Time & Orbit

Eccentricity (e): 0.239

Orbit Range: 0.79 AU - 1.29 AU

Year: 696 Days

Day: 9.9 Hours

Environment

Temp: -153 °C

Axial Tilt: 39.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 43,833,966 km

• M1: 140,472 km (0.06 R)
• M2: 633,996 km (0.111 R)
• M3: 1,346,231 km (0.085 R)
• M4: 1,862,344 km (0.039 R)
• M5: 2,283,761 km (0.099 R)
• M6: 3,249,116 km (0.081 R)
• M7: 4,348,511 km (0.062 R)
• M8: 6,577,519 km (0.112 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.62 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 411.3

Radius: 10.3

Gravity: 3.88 G

Time & Orbit

Eccentricity (e): 0.125

Orbit Range: 1.42 AU - 1.82 AU

Year: 1353 Days

Day: 13.5 Hours

Environment

Temp: -185 °C

Axial Tilt: 11.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 43,833,966 km

• M1: 134,339 km (0.11 R)
• M2: 486,193 km (0.092 R)
• M3: 891,454 km (0.098 R)
• M4: 1,404,874 km (0.085 R)
• M5: 1,832,275 km (0.104 R)
• M6: 2,529,401 km (0.091 R)
• M7: 4,274,161 km (0.055 R)
• M8: 4,896,937 km (0.063 R)
• M9: 6,824,206 km (0.085 R)
• M10: 7,853,888 km (0.079 R)
• M11: 8,541,440 km (0.108 R)
• M12: 10,219,629 km (0.096 R)

Planet 7 - Gas Giant

Semi-Major Axis: 4.07 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 651.5

Radius: 13.5

Gravity: 3.57 G

Time & Orbit

Eccentricity (e): 0.007

Orbit Range: 4.04 AU - 4.1 AU

Year: 5386 Days

Day: 10.5 Hours

Environment

Temp: -209 °C

Axial Tilt: 13.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 43,833,966 km

• M1: 168,746 km (0.119 R)
• M2: 624,272 km (0.115 R)
• M3: 1,253,181 km (0.053 R)
• M4: 1,994,888 km (0.066 R)
• M5: 2,483,923 km (0.077 R)
• M6: 3,149,783 km (0.105 R)
• M7: 3,841,973 km (0.11 R)
• M8: 4,481,952 km (0.069 R)
• M9: 5,976,734 km (0.113 R)
• M10: 7,143,897 km (0.104 R)
• M11: 7,892,036 km (0.108 R)
• M12: 8,342,624 km (0.087 R)
• M13: 11,371,084 km (0.051 R)
• M14: 12,143,308 km (0.067 R)
• M15: 14,671,811 km (0.104 R)
• M16: 17,596,450 km (0.09 R)
• M17: 18,961,530 km (0.097 R)
• M18: 21,391,897 km (0.05 R)
• M19: 25,214,422 km (0.105 R)
• M20: 26,112,757 km (0.082 R)
• M21: 30,559,105 km (0.107 R)

Asteroid Belt

Center: 4.81 AU

Composition

Type: Outer System (Icy)

A dense region of planetesimals and debris.

Boundary

Planet 8 - Gas Giant

Semi-Major Axis: 5.54 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 968.3

Radius: 13.4

Gravity: 5.39 G

Time & Orbit

Eccentricity (e): 0.136

Orbit Range: 4.79 AU - 6.29 AU

Year: 8554 Days

Day: 7.5 Hours

Environment

Temp: -209 °C

Axial Tilt: 50 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (30)

Outer Limit: 43,833,966 km

• M1: 166,802 km (0.043 R)
• M2: 702,362 km (0.115 R)
• M3: 1,523,804 km (0.044 R)
• M4: 1,966,614 km (0.048 R)
• M5: 2,734,649 km (0.108 R)
• M6: 3,281,728 km (0.105 R)
• M7: 3,927,692 km (0.052 R)
• M8: 4,395,036 km (0.083 R)
• M9: 5,086,776 km (0.108 R)
• M10: 6,499,728 km (0.105 R)
• M11: 7,399,559 km (0.035 R)
• M12: 9,788,637 km (0.095 R)
• M13: 10,394,060 km (0.069 R)
• M14: 11,403,696 km (0.083 R)
• M15: 13,311,368 km (0.11 R)
• M16: 14,826,645 km (0.12 R)
• M17: 16,384,108 km (0.06 R)
• M18: 19,505,468 km (0.107 R)
• M19: 21,456,972 km (0.101 R)
• M20: 22,915,851 km (0.104 R)
• M21: 27,292,785 km (0.101 R)
• M22: 27,989,163 km (0.071 R)
• M23: 29,625,465 km (0.118 R)
• M24: 31,108,728 km (0.119 R)
• M25: 31,868,685 km (0.096 R)
• M26: 33,312,753 km (0.089 R)
• M27: 36,092,880 km (0.116 R)
• M28: 39,781,215 km (0.115 R)
• M29: 45,495,555 km (0.108 R)
• M30: 45,913,531 km (0.084 R)

Planet 9 - Ice Giant

Semi-Major Axis: 5.99 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 566.4

Radius: 6.2

Gravity: 14.73 G

Time & Orbit

Eccentricity (e): 0.169

Orbit Range: 4.98 AU - 7 AU

Year: 9617 Days

Day: 16.6 Hours

Environment

Temp: -224 °C

Axial Tilt: 19 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (31)

Outer Limit: 43,833,966 km

• M1: 78,539 km (0.118 R)
• M2: 391,647 km (0.119 R)
• M3: 682,017 km (0.115 R)
• M4: 1,007,093 km (0.046 R)
• M5: 1,380,639 km (0.089 R)
• M6: 1,607,130 km (0.071 R)
• M7: 2,135,659 km (0.098 R)
• M8: 2,497,088 km (0.053 R)
• M9: 3,048,954 km (0.117 R)
• M10: 3,678,911 km (0.117 R)
• M11: 4,336,244 km (0.107 R)
• M12: 4,826,027 km (0.116 R)
• M13: 5,099,941 km (0.114 R)
• M14: 5,712,395 km (0.072 R)
• M15: 6,890,927 km (0.109 R)
• M16: 8,703,155 km (0.11 R)
• M17: 11,873,284 km (0.074 R)
• M18: 13,178,675 km (0.117 R)
• M19: 14,018,517 km (0.073 R)
• M20: 15,085,748 km (0.114 R)
• M21: 16,138,618 km (0.066 R)
• M22: 16,614,340 km (0.052 R)
• M23: 18,243,311 km (0.104 R)
• M24: 20,053,595 km (0.045 R)
• M25: 22,396,746 km (0.049 R)
• M26: 22,649,118 km (0.118 R)
• M27: 30,202,165 km (0.108 R)
• M28: 32,403,048 km (0.105 R)
• M29: 38,790,429 km (0.063 R)
• M30: 39,766,256 km (0.064 R)
• M31: 42,792,172 km (0.078 R)

Kuiper Belt

Range: 30 - 51 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 276 - 17,424 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit