🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.26 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.51 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.25

Radius: 1.6

Gravity: 1.27 G

Time & Orbit

Eccentricity (e): 0.162

Orbit Range: 0.43 AU - 0.59 AU

Year: 235 Days

Day: 16.6 Hours

Environment

Temp: -114 °C

Axial Tilt: 156.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 77,787,497 km

• M1: 244,892 km (0.071 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.62 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.21

Radius: 1.78

Gravity: 1.33 G

Time & Orbit

Eccentricity (e): 0.155

Orbit Range: 0.52 AU - 0.72 AU

Year: 315 Days

Day: 21.5 Hours

Environment

Temp: -130 °C

Axial Tilt: 28 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.78 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 17.7

Radius: 11.9

Gravity: 0.12 G

Time & Orbit

Eccentricity (e): 0.016

Orbit Range: 0.77 AU - 0.79 AU

Year: 445 Days

Day: 6.4 Hours

Environment

Temp: -155 °C

Axial Tilt: 77.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (2)

Outer Limit: 77,787,497 km

• M1: 153,338 km (0.109 R)
• M2: 1,325,138 km (0.109 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.01 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 752.7

Radius: 14.5

Gravity: 3.58 G

Time & Orbit

Eccentricity (e): 0.238

Orbit Range: 0.77 AU - 1.25 AU

Year: 655 Days

Day: 7.2 Hours

Environment

Temp: -158 °C

Axial Tilt: 154.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 77,787,497 km

• M1: 181,163 km (0.085 R)
• M2: 710,291 km (0.111 R)
• M3: 1,452,745 km (0.11 R)
• M4: 1,938,190 km (0.112 R)
• M5: 2,608,388 km (0.119 R)
• M6: 3,301,326 km (0.091 R)
• M7: 3,754,757 km (0.043 R)
• M8: 4,265,334 km (0.111 R)
• M9: 4,805,832 km (0.111 R)
• M10: 5,777,619 km (0.06 R)
• M11: 6,708,717 km (0.067 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.15 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 244.1

Radius: 12.9

Gravity: 1.47 G

Time & Orbit

Eccentricity (e): 0.134

Orbit Range: 1 AU - 1.3 AU

Year: 796 Days

Day: 5.6 Hours

Environment

Temp: -169 °C

Axial Tilt: 32.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 77,787,497 km

• M1: 172,636 km (0.064 R)
• M2: 772,673 km (0.105 R)
• M3: 1,400,086 km (0.093 R)
• M4: 1,874,910 km (0.114 R)
• M5: 2,372,772 km (0.092 R)
• M6: 4,018,348 km (0.098 R)
• M7: 4,794,612 km (0.087 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.25 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 273.7

Radius: 8

Gravity: 4.28 G

Time & Orbit

Eccentricity (e): 0.058

Orbit Range: 1.18 AU - 1.32 AU

Year: 902 Days

Day: 6.9 Hours

Environment

Temp: -168 °C

Axial Tilt: 38.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 77,787,497 km

• M1: 100,081 km (0.107 R)
• M2: 392,096 km (0.104 R)
• M3: 648,507 km (0.087 R)
• M4: 1,033,871 km (0.113 R)
• M5: 1,508,695 km (0.091 R)
• M6: 1,833,920 km (0.11 R)
• M7: 2,340,608 km (0.06 R)
• M8: 2,891,577 km (0.106 R)
• M9: 4,710,987 km (0.086 R)
• M10: 5,170,701 km (0.072 R)
• M11: 5,860,646 km (0.058 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.21 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 83

Radius: 8.1

Gravity: 1.27 G

Time & Orbit

Eccentricity (e): 0.04

Orbit Range: 3.08 AU - 3.34 AU

Year: 3713 Days

Day: 8.8 Hours

Environment

Temp: -197 °C

Axial Tilt: 19.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 77,787,497 km

• M1: 101,727 km (0.103 R)
• M2: 1,001,109 km (0.084 R)
• M3: 1,741,469 km (0.118 R)
• M4: 2,845,800 km (0.066 R)
• M5: 3,271,705 km (0.119 R)
• M6: 3,755,954 km (0.097 R)
• M7: 5,670,806 km (0.096 R)
• M8: 6,949,868 km (0.112 R)

Planet 8 - Ice Giant

Semi-Major Axis: 7.58 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 619.7

Radius: 3.9

Gravity: 40.74 G

Time & Orbit

Eccentricity (e): 0.168

Orbit Range: 6.31 AU - 8.85 AU

Year: 13475 Days

Day: 17.5 Hours

Environment

Temp: -230 °C

Axial Tilt: 22.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (28)

Outer Limit: 77,787,497 km

• M1: 48,619 km (0.102 R)
• M2: 311,612 km (0.081 R)
• M3: 493,823 km (0.111 R)
• M4: 642,074 km (0.083 R)
• M5: 1,064,838 km (0.076 R)
• M6: 1,398,291 km (0.052 R)
• M7: 2,492,001 km (0.101 R)
• M8: 2,662,992 km (0.087 R)
• M9: 2,818,873 km (0.089 R)
• M10: 3,886,253 km (0.117 R)
• M11: 6,943,735 km (0.089 R)
• M12: 7,632,783 km (0.109 R)
• M13: 7,948,135 km (0.088 R)
• M14: 9,246,196 km (0.101 R)
• M15: 9,972,044 km (0.076 R)
• M16: 11,303,466 km (0.097 R)
• M17: 14,043,799 km (0.077 R)
• M18: 14,517,127 km (0.07 R)
• M19: 17,659,879 km (0.119 R)
• M20: 18,370,619 km (0.081 R)
• M21: 23,319,914 km (0.079 R)
• M22: 25,148,748 km (0.106 R)
• M23: 29,856,893 km (0.082 R)
• M24: 30,751,039 km (0.109 R)
• M25: 34,628,616 km (0.119 R)
• M26: 35,865,042 km (0.085 R)
• M27: 36,875,127 km (0.072 R)
• M28: 40,695,408 km (0.07 R)

Planet 9 - Ice Giant

Semi-Major Axis: 8.78 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 479.1

Radius: 7.7

Gravity: 8.08 G

Time & Orbit

Eccentricity (e): 0.158

Orbit Range: 7.39 AU - 10.17 AU

Year: 16798 Days

Day: 23.5 Hours

Environment

Temp: -234 °C

Axial Tilt: 46.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 77,787,497 km

• M1: 95,743 km (0.089 R)
• M2: 346,319 km (0.068 R)
• M3: 894,894 km (0.106 R)
• M4: 1,330,523 km (0.093 R)
• M5: 5,938,736 km (0.098 R)
• M6: 6,448,267 km (0.12 R)
• M7: 8,199,908 km (0.092 R)
• M8: 8,634,041 km (0.05 R)
• M9: 10,694,303 km (0.071 R)
• M10: 12,361,721 km (0.085 R)
• M11: 14,821,559 km (0.069 R)
• M12: 15,905,694 km (0.079 R)
• M13: 27,607,689 km (0.094 R)
• M14: 32,951,923 km (0.111 R)
• M15: 33,436,321 km (0.11 R)
• M16: 41,283,028 km (0.119 R)
• M17: 44,590,039 km (0.041 R)
• M18: 48,224,519 km (0.088 R)

Planet 10 - Ice Giant

Semi-Major Axis: 9 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 963.3

Radius: 5

Gravity: 38.53 G

Time & Orbit

Eccentricity (e): 0.045

Orbit Range: 8.6 AU - 9.41 AU

Year: 17433 Days

Day: 21.1 Hours

Environment

Temp: -219 °C

Axial Tilt: 34.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (38)

Outer Limit: 77,787,497 km

• M1: 62,682 km (0.114 R)
• M2: 357,240 km (0.094 R)
• M3: 586,872 km (0.095 R)
• M4: 845,527 km (0.085 R)
• M5: 1,541,606 km (0.12 R)
• M6: 1,861,446 km (0.112 R)
• M7: 2,139,848 km (0.106 R)
• M8: 3,281,728 km (0.066 R)
• M9: 3,688,485 km (0.068 R)
• M10: 4,962,311 km (0.116 R)
• M11: 5,986,757 km (0.071 R)
• M12: 6,548,647 km (0.089 R)
• M13: 7,050,847 km (0.067 R)
• M14: 7,627,696 km (0.113 R)
• M15: 7,978,354 km (0.077 R)
• M16: 8,820,141 km (0.083 R)
• M17: 9,039,601 km (0.055 R)
• M18: 9,777,866 km (0.054 R)
• M19: 11,699,301 km (0.102 R)
• M20: 12,644,311 km (0.074 R)
• M21: 13,135,291 km (0.078 R)
• M22: 15,463,932 km (0.094 R)
• M23: 15,944,291 km (0.054 R)
• M24: 17,188,795 km (0.106 R)
• M25: 19,589,841 km (0.118 R)
• M26: 20,437,463 km (0.113 R)
• M27: 21,015,808 km (0.086 R)
• M28: 24,072,691 km (0.114 R)
• M29: 31,943,035 km (0.092 R)
• M30: 33,913,089 km (0.089 R)
• M31: 34,723,311 km (0.094 R)
• M32: 39,411,559 km (0.098 R)
• M33: 42,760,906 km (0.102 R)
• M34: 44,184,030 km (0.111 R)
• M35: 56,913,014 km (0.086 R)
• M36: 57,482,832 km (0.096 R)
• M37: 58,056,390 km (0.054 R)
• M38: 77,322,053 km (0.098 R)

Kuiper Belt

Range: 30 - 49 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 503 - 12,506 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit