🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.33 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.65 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.74

Radius: 1.69

Gravity: 1.31 G

Time & Orbit

Eccentricity (e): 0.14

Orbit Range: 0.56 AU - 0.74 AU

Year: 192 Days

Day: 19.7 Hours

Environment

Temp: 149 °C

Axial Tilt: 0.7 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 1.14 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.77

Radius: 1.7

Gravity: 1.3 G

Time & Orbit

Eccentricity (e): 0.01

Orbit Range: 1.13 AU - 1.15 AU

Year: 447 Days

Day: 25.8 Hours

Environment

Temp: 1 °C

Axial Tilt: 48.2 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Planet 3 - Terrestrial

Semi-Major Axis: 1.98 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.61

Radius: 0.82

Gravity: 0.91 G

Time & Orbit

Eccentricity (e): 0.098

Orbit Range: 1.79 AU - 2.17 AU

Year: 1023 Days

Day: 43 Hours

Environment

Temp: -72 °C

Axial Tilt: 10.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 4 - Gas Giant

Semi-Major Axis: 4.8 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 962.1

Radius: 8

Gravity: 15.03 G

Time & Orbit

Eccentricity (e): 0.126

Orbit Range: 4.2 AU - 5.4 AU

Year: 3860 Days

Day: 7.1 Hours

Environment

Temp: -135 °C

Axial Tilt: 31.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 61,471,712 km

• M1: 99,483 km (0.116 R)
• M2: 397,332 km (0.064 R)
• M3: 888,462 km (0.097 R)
• M4: 1,378,993 km (0.063 R)
• M5: 1,860,698 km (0.112 R)
• M6: 2,276,580 km (0.113 R)
• M7: 2,842,060 km (0.072 R)
• M8: 3,602,167 km (0.119 R)
• M9: 4,466,693 km (0.103 R)
• M10: 5,106,823 km (0.112 R)
• M11: 5,748,149 km (0.086 R)
• M12: 6,164,330 km (0.12 R)
• M13: 6,760,926 km (0.118 R)
• M14: 7,056,681 km (0.053 R)
• M15: 9,335,356 km (0.077 R)
• M16: 10,079,456 km (0.057 R)
• M17: 12,647,602 km (0.095 R)
• M18: 14,620,050 km (0.112 R)
• M19: 16,669,840 km (0.085 R)
• M20: 17,887,717 km (0.089 R)
• M21: 18,518,421 km (0.034 R)
• M22: 19,360,508 km (0.085 R)
• M23: 21,754,074 km (0.058 R)
• M24: 23,281,318 km (0.116 R)
• M25: 23,881,355 km (0.097 R)

Planet 5 - Gas Giant

Semi-Major Axis: 5.02 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 761

Radius: 8.2

Gravity: 11.32 G

Time & Orbit

Eccentricity (e): 0.119

Orbit Range: 4.42 AU - 5.62 AU

Year: 4129 Days

Day: 13.7 Hours

Environment

Temp: -150 °C

Axial Tilt: 45.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 61,471,712 km

• M1: 115,041 km (0.082 R)
• M2: 660,026 km (0.074 R)
• M3: 1,479,822 km (0.075 R)
• M4: 2,047,995 km (0.112 R)
• M5: 3,230,716 km (0.109 R)
• M6: 4,047,819 km (0.047 R)
• M7: 4,541,343 km (0.038 R)
• M8: 7,223,932 km (0.108 R)
• M9: 11,441,844 km (0.089 R)
• M10: 13,777,964 km (0.084 R)
• M11: 14,248,898 km (0.117 R)
• M12: 14,947,969 km (0.065 R)
• M13: 15,839,722 km (0.116 R)
• M14: 17,424,113 km (0.117 R)
• M15: 19,895,170 km (0.11 R)
• M16: 20,429,534 km (0.108 R)
• M17: 20,768,224 km (0.086 R)
• M18: 25,834,804 km (0.102 R)

Planet 6 - Gas Giant

Semi-Major Axis: 5.69 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 218.3

Radius: 9.5

Gravity: 2.42 G

Time & Orbit

Eccentricity (e): 0.055

Orbit Range: 5.38 AU - 6 AU

Year: 4982 Days

Day: 14.5 Hours

Environment

Temp: -153 °C

Axial Tilt: 24.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 61,471,712 km

• M1: 118,482 km (0.098 R)
• M2: 465,399 km (0.09 R)
• M3: 763,697 km (0.113 R)
• M4: 1,359,994 km (0.115 R)
• M5: 1,677,591 km (0.112 R)
• M6: 2,269,400 km (0.119 R)
• M7: 3,044,915 km (0.069 R)
• M8: 3,448,231 km (0.082 R)
• M9: 3,987,232 km (0.067 R)
• M10: 5,506,548 km (0.118 R)
• M11: 7,914,625 km (0.087 R)
• M12: 9,421,973 km (0.09 R)
• M13: 10,205,118 km (0.103 R)
• M14: 11,858,623 km (0.104 R)
• M15: 14,060,255 km (0.115 R)
• M16: 17,383,572 km (0.089 R)
• M17: 18,105,980 km (0.117 R)
• M18: 19,138,953 km (0.062 R)
• M19: 20,210,972 km (0.101 R)

Planet 7 - Gas Giant

Semi-Major Axis: 9.39 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 147.2

Radius: 12

Gravity: 1.02 G

Time & Orbit

Eccentricity (e): 0.222

Orbit Range: 7.31 AU - 11.47 AU

Year: 10563 Days

Day: 13 Hours

Environment

Temp: -167 °C

Axial Tilt: 12.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 61,471,712 km

• M1: 149,299 km (0.084 R)
• M2: 553,662 km (0.12 R)
• M3: 1,075,309 km (0.062 R)
• M4: 1,589,926 km (0.062 R)
• M5: 2,176,350 km (0.082 R)
• M6: 2,795,535 km (0.114 R)
• M7: 3,613,686 km (0.118 R)
• M8: 4,535,209 km (0.085 R)
• M9: 5,636,100 km (0.034 R)
• M10: 6,973,954 km (0.106 R)
• M11: 7,452,368 km (0.065 R)
• M12: 10,619,654 km (0.057 R)
• M13: 11,161,796 km (0.098 R)
• M14: 12,548,868 km (0.108 R)
• M15: 13,834,213 km (0.078 R)
• M16: 14,757,082 km (0.12 R)
• M17: 16,070,402 km (0.069 R)
• M18: 20,202,594 km (0.063 R)
• M19: 20,755,807 km (0.108 R)
• M20: 22,110,116 km (0.057 R)
• M21: 22,846,138 km (0.106 R)
• M22: 25,073,351 km (0.057 R)

Planet 8 - Ice Giant

Semi-Major Axis: 13.67 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 41.1

Radius: 5.3

Gravity: 1.46 G

Time & Orbit

Eccentricity (e): 0.245

Orbit Range: 10.32 AU - 17.02 AU

Year: 18553 Days

Day: 20.9 Hours

Environment

Temp: -192 °C

Axial Tilt: 43.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 61,471,712 km

• M1: 66,571 km (0.059 R)
• M2: 529,128 km (0.058 R)
• M3: 821,592 km (0.103 R)
• M4: 1,362,837 km (0.035 R)
• M5: 2,220,631 km (0.08 R)
• M6: 3,000,784 km (0.075 R)
• M7: 4,179,765 km (0.031 R)
• M8: 4,820,492 km (0.117 R)
• M9: 6,802,814 km (0.095 R)
• M10: 8,720,957 km (0.082 R)
• M11: 12,671,688 km (0.111 R)
• M12: 15,996,351 km (0.079 R)
• M13: 18,488,352 km (0.069 R)
• M14: 19,926,586 km (0.109 R)
• M15: 21,087,914 km (0.025 R)
• M16: 21,791,772 km (0.1 R)
• M17: 27,245,363 km (0.077 R)

Planet 9 - Ice Giant

Semi-Major Axis: 19.83 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 137.5

Radius: 4.2

Gravity: 7.79 G

Time & Orbit

Eccentricity (e): 0.054

Orbit Range: 18.76 AU - 20.9 AU

Year: 32416 Days

Day: 20.7 Hours

Environment

Temp: -197 °C

Axial Tilt: 36.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 61,471,712 km

• M1: 52,509 km (0.11 R)
• M2: 933,491 km (0.066 R)
• M3: 1,534,725 km (0.09 R)
• M4: 1,953,748 km (0.111 R)
• M5: 2,596,271 km (0.118 R)
• M6: 4,193,079 km (0.026 R)
• M7: 8,056,593 km (0.101 R)
• M8: 8,738,161 km (0.093 R)
• M9: 10,049,536 km (0.111 R)
• M10: 11,129,932 km (0.056 R)
• M11: 13,993,235 km (0.105 R)
• M12: 16,610,001 km (0.089 R)
• M13: 16,997,460 km (0.081 R)
• M14: 24,539,436 km (0.118 R)
• M15: 27,765,814 km (0.025 R)
• M16: 28,752,860 km (0.049 R)
• M17: 31,973,104 km (0.118 R)
• M18: 34,665,866 km (0.09 R)
• M19: 35,044,348 km (0.091 R)
• M20: 41,057,584 km (0.114 R)
• M21: 46,642,073 km (0.036 R)
• M22: 50,579,339 km (0.106 R)

Kuiper Belt

Range: 30 - 45 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 459 - 17,608 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit