🌌 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: 2.37

Radius: 1.41

Gravity: 1.19 G

Time & Orbit

Eccentricity (e): 0.067

Orbit Range: 0.51 AU - 0.59 AU

Year: 268 Days

Day: 46.3 Hours

Environment

Temp: -123 °C

Axial Tilt: 50 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.56 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.03

Radius: 1.33

Gravity: 1.15 G

Time & Orbit

Eccentricity (e): 0.041

Orbit Range: 0.54 AU - 0.58 AU

Year: 275 Days

Day: 20.4 Hours

Environment

Temp: -121 °C

Axial Tilt: 24.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 83,976,558 km

• M1: 231,129 km (0.068 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.98 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 358.5

Radius: 13.6

Gravity: 1.94 G

Time & Orbit

Eccentricity (e): 0.068

Orbit Range: 0.91 AU - 1.05 AU

Year: 636 Days

Day: 9 Hours

Environment

Temp: -157 °C

Axial Tilt: 8.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 83,976,558 km

• M1: 169,195 km (0.113 R)
• M2: 594,053 km (0.082 R)
• M3: 1,101,639 km (0.109 R)
• M4: 1,638,097 km (0.111 R)
• M5: 2,249,653 km (0.084 R)
• M6: 2,756,490 km (0.085 R)
• M7: 3,743,836 km (0.091 R)
• M8: 4,520,100 km (0.11 R)
• M9: 5,174,740 km (0.095 R)
• M10: 6,032,534 km (0.064 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.37 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 825.7

Radius: 14.2

Gravity: 4.09 G

Time & Orbit

Eccentricity (e): 0.213

Orbit Range: 1.08 AU - 1.66 AU

Year: 1052 Days

Day: 10.1 Hours

Environment

Temp: -180 °C

Axial Tilt: 124.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 83,976,558 km

• M1: 176,675 km (0.094 R)
• M2: 703,110 km (0.093 R)
• M3: 1,391,111 km (0.101 R)
• M4: 1,880,744 km (0.049 R)
• M5: 2,498,434 km (0.114 R)
• M6: 3,350,244 km (0.106 R)
• M7: 3,885,057 km (0.077 R)
• M8: 5,820,853 km (0.105 R)
• M9: 6,529,349 km (0.076 R)
• M10: 7,294,691 km (0.103 R)
• M11: 8,199,609 km (0.077 R)
• M12: 9,033,767 km (0.095 R)
• M13: 9,501,410 km (0.052 R)
• M14: 10,390,320 km (0.063 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.52 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 105.4

Radius: 14.7

Gravity: 0.49 G

Time & Orbit

Eccentricity (e): 0

Orbit Range: 2.52 AU - 2.52 AU

Year: 2624 Days

Day: 10.9 Hours

Environment

Temp: -198 °C

Axial Tilt: 26.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (5)

Outer Limit: 83,976,558 km

• M1: 190,288 km (0.075 R)
• M2: 911,649 km (0.104 R)
• M3: 2,384,141 km (0.105 R)
• M4: 3,252,707 km (0.071 R)
• M5: 7,256,993 km (0.093 R)

Planet 6 - Ice Giant

Semi-Major Axis: 6.7 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 615.4

Radius: 5.4

Gravity: 21.1 G

Time & Orbit

Eccentricity (e): 0.171

Orbit Range: 5.55 AU - 7.85 AU

Year: 11377 Days

Day: 17.1 Hours

Environment

Temp: -225 °C

Axial Tilt: 32.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (29)

Outer Limit: 83,976,558 km

• M1: 103,821 km (0.057 R)
• M2: 305,778 km (0.111 R)
• M3: 553,662 km (0.092 R)
• M4: 1,581,249 km (0.112 R)
• M5: 1,795,174 km (0.061 R)
• M6: 2,134,163 km (0.057 R)
• M7: 2,396,109 km (0.04 R)
• M8: 3,904,056 km (0.057 R)
• M9: 4,097,336 km (0.081 R)
• M10: 4,502,896 km (0.119 R)
• M11: 4,746,441 km (0.111 R)
• M12: 5,427,860 km (0.108 R)
• M13: 6,025,653 km (0.079 R)
• M14: 6,666,231 km (0.114 R)
• M15: 8,954,629 km (0.079 R)
• M16: 11,049,149 km (0.102 R)
• M17: 12,180,408 km (0.054 R)
• M18: 12,653,885 km (0.084 R)
• M19: 14,604,791 km (0.106 R)
• M20: 19,091,381 km (0.072 R)
• M21: 21,990,139 km (0.077 R)
• M22: 23,227,463 km (0.107 R)
• M23: 24,324,315 km (0.117 R)
• M24: 28,849,501 km (0.089 R)
• M25: 29,689,792 km (0.038 R)
• M26: 33,214,467 km (0.054 R)
• M27: 39,009,290 km (0.088 R)
• M28: 44,324,802 km (0.084 R)
• M29: 46,008,825 km (0.093 R)

Planet 7 - Ice Giant

Semi-Major Axis: 6.84 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 654.2

Radius: 7.1

Gravity: 12.98 G

Time & Orbit

Eccentricity (e): 0.072

Orbit Range: 6.35 AU - 7.33 AU

Year: 11735 Days

Day: 18.4 Hours

Environment

Temp: -217 °C

Axial Tilt: 33.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 83,976,558 km

• M1: 91,703 km (0.084 R)
• M2: 507,735 km (0.067 R)
• M3: 917,334 km (0.083 R)
• M4: 1,475,783 km (0.108 R)
• M5: 2,316,972 km (0.057 R)
• M6: 4,344,621 km (0.104 R)
• M7: 5,292,025 km (0.083 R)
• M8: 6,681,340 km (0.075 R)
• M9: 7,043,068 km (0.111 R)
• M10: 10,746,961 km (0.095 R)
• M11: 13,639,885 km (0.11 R)
• M12: 13,961,520 km (0.033 R)
• M13: 22,295,319 km (0.1 R)
• M14: 25,353,398 km (0.105 R)
• M15: 28,054,537 km (0.075 R)
• M16: 28,679,857 km (0.076 R)
• M17: 29,101,872 km (0.107 R)
• M18: 29,958,320 km (0.112 R)
• M19: 30,721,419 km (0.091 R)
• M20: 32,400,056 km (0.077 R)
• M21: 46,619,184 km (0.075 R)
• M22: 48,832,335 km (0.076 R)

Planet 8 - Ice Giant

Semi-Major Axis: 7.3 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 448.5

Radius: 5.5

Gravity: 14.83 G

Time & Orbit

Eccentricity (e): 0.196

Orbit Range: 5.87 AU - 8.73 AU

Year: 12939 Days

Day: 19.5 Hours

Environment

Temp: -226 °C

Axial Tilt: 6.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (26)

Outer Limit: 83,976,558 km

• M1: 69,713 km (0.072 R)
• M2: 319,541 km (0.109 R)
• M3: 601,084 km (0.078 R)
• M4: 1,198,877 km (0.108 R)
• M5: 1,441,375 km (0.108 R)
• M6: 2,313,980 km (0.068 R)
• M7: 3,086,952 km (0.116 R)
• M8: 3,322,718 km (0.09 R)
• M9: 3,830,304 km (0.095 R)
• M10: 4,656,234 km (0.048 R)
• M11: 5,594,960 km (0.06 R)
• M12: 6,731,455 km (0.069 R)
• M13: 6,967,970 km (0.088 R)
• M14: 8,735,618 km (0.096 R)
• M15: 9,304,838 km (0.093 R)
• M16: 9,500,063 km (0.089 R)
• M17: 9,797,763 km (0.065 R)
• M18: 10,101,895 km (0.057 R)
• M19: 10,569,688 km (0.061 R)
• M20: 14,064,743 km (0.116 R)
• M21: 23,489,259 km (0.042 R)
• M22: 28,698,108 km (0.117 R)
• M23: 32,680,104 km (0.107 R)
• M24: 41,191,624 km (0.057 R)
• M25: 44,557,127 km (0.071 R)
• M26: 45,671,632 km (0.069 R)

Planet 9 - Ice Giant

Semi-Major Axis: 10.63 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 712.6

Radius: 3.8

Gravity: 49.35 G

Time & Orbit

Eccentricity (e): 0.124

Orbit Range: 9.31 AU - 11.95 AU

Year: 22736 Days

Day: 15.5 Hours

Environment

Temp: -223 °C

Axial Tilt: 48.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 83,976,558 km

• M1: 93,499 km (0.087 R)
• M2: 528,679 km (0.109 R)
• M3: 1,574,069 km (0.086 R)
• M4: 2,746,168 km (0.064 R)
• M5: 3,375,227 km (0.093 R)
• M6: 3,962,997 km (0.115 R)
• M7: 5,540,507 km (0.087 R)
• M8: 5,916,745 km (0.119 R)
• M9: 6,354,618 km (0.099 R)
• M10: 11,780,384 km (0.035 R)
• M11: 14,945,126 km (0.089 R)
• M12: 18,910,816 km (0.113 R)
• M13: 21,945,858 km (0.048 R)
• M14: 23,309,742 km (0.048 R)
• M15: 25,177,172 km (0.116 R)
• M16: 28,344,309 km (0.068 R)
• M17: 46,492,625 km (0.089 R)
• M18: 51,227,397 km (0.113 R)
• M19: 51,408,710 km (0.086 R)
• M20: 59,214,876 km (0.116 R)
• M21: 63,502,651 km (0.089 R)
• M22: 72,006,093 km (0.099 R)
• M23: 74,070,693 km (0.117 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: 253 - 14,566 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit