🌌 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: 1.81

Radius: 1.27

Gravity: 1.12 G

Time & Orbit

Eccentricity (e): 0.218

Orbit Range: 0.43 AU - 0.67 AU

Year: 268 Days

Day: 24 Hours

Environment

Temp: -124 °C

Axial Tilt: 43.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 49,436,175 km

• M1: 30,518 km (0.119 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.77 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 958.9

Radius: 14.9

Gravity: 4.32 G

Time & Orbit

Eccentricity (e): 0.217

Orbit Range: 0.6 AU - 0.94 AU

Year: 443 Days

Day: 14.7 Hours

Environment

Temp: -140 °C

Axial Tilt: 36.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 49,436,175 km

• M1: 185,352 km (0.113 R)
• M2: 655,388 km (0.06 R)
• M3: 1,225,057 km (0.117 R)
• M4: 2,131,919 km (0.115 R)
• M5: 2,885,593 km (0.118 R)
• M6: 3,404,997 km (0.051 R)
• M7: 3,892,387 km (0.115 R)
• M8: 4,804,635 km (0.107 R)
• M9: 5,320,299 km (0.098 R)
• M10: 5,944,870 km (0.099 R)

Planet 3 - Gas Giant

Semi-Major Axis: 2.23 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 434.5

Radius: 14.3

Gravity: 2.12 G

Time & Orbit

Eccentricity (e): 0.108

Orbit Range: 1.99 AU - 2.47 AU

Year: 2185 Days

Day: 11.7 Hours

Environment

Temp: -201 °C

Axial Tilt: 34 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 49,436,175 km

• M1: 179,069 km (0.039 R)
• M2: 684,560 km (0.054 R)
• M3: 1,841,101 km (0.075 R)
• M4: 2,425,580 km (0.046 R)
• M5: 3,495,354 km (0.069 R)
• M6: 4,011,168 km (0.092 R)
• M7: 4,479,708 km (0.101 R)
• M8: 5,733,338 km (0.12 R)
• M9: 6,581,110 km (0.077 R)
• M10: 7,650,734 km (0.087 R)
• M11: 10,374,762 km (0.101 R)
• M12: 12,555,749 km (0.061 R)
• M13: 14,850,281 km (0.119 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.59 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 378.5

Radius: 11.2

Gravity: 3.02 G

Time & Orbit

Eccentricity (e): 0.199

Orbit Range: 2.07 AU - 3.11 AU

Year: 2734 Days

Day: 8.7 Hours

Environment

Temp: -190 °C

Axial Tilt: 19.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 49,436,175 km

• M1: 139,276 km (0.11 R)
• M2: 605,423 km (0.104 R)
• M3: 1,129,015 km (0.056 R)
• M4: 1,990,699 km (0.106 R)
• M5: 2,557,974 km (0.101 R)
• M6: 3,600,372 km (0.115 R)
• M7: 4,386,359 km (0.063 R)
• M8: 4,798,950 km (0.076 R)
• M9: 6,400,844 km (0.112 R)
• M10: 7,466,579 km (0.098 R)
• M11: 8,395,283 km (0.07 R)
• M12: 9,466,553 km (0.049 R)
• M13: 11,958,555 km (0.091 R)
• M14: 13,059,445 km (0.081 R)
• M15: 14,450,406 km (0.088 R)
• M16: 15,274,990 km (0.107 R)
• M17: 15,746,522 km (0.088 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.02 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 641.8

Radius: 13.4

Gravity: 3.57 G

Time & Orbit

Eccentricity (e): 0.026

Orbit Range: 2.94 AU - 3.1 AU

Year: 3443 Days

Day: 7.6 Hours

Environment

Temp: -194 °C

Axial Tilt: 25.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 49,436,175 km

• M1: 166,802 km (0.03 R)
• M2: 753,824 km (0.041 R)
• M3: 1,189,901 km (0.115 R)
• M4: 1,608,626 km (0.114 R)
• M5: 2,049,491 km (0.051 R)
• M6: 3,254,651 km (0.105 R)
• M7: 4,336,094 km (0.101 R)
• M8: 4,960,516 km (0.105 R)
• M9: 5,617,998 km (0.091 R)
• M10: 7,583,116 km (0.089 R)
• M11: 8,284,281 km (0.112 R)
• M12: 8,811,315 km (0.061 R)
• M13: 9,323,238 km (0.032 R)
• M14: 11,877,772 km (0.114 R)
• M15: 14,817,071 km (0.069 R)
• M16: 17,631,605 km (0.091 R)
• M17: 22,495,481 km (0.104 R)

Planet 6 - Gas Giant

Semi-Major Axis: 4.79 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 727.5

Radius: 10.8

Gravity: 6.24 G

Time & Orbit

Eccentricity (e): 0.108

Orbit Range: 4.27 AU - 5.31 AU

Year: 6877 Days

Day: 8.5 Hours

Environment

Temp: -216 °C

Axial Tilt: 11.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 49,436,175 km

• M1: 134,339 km (0.099 R)
• M2: 692,638 km (0.088 R)
• M3: 1,498,821 km (0.048 R)
• M4: 1,920,537 km (0.089 R)
• M5: 3,131,981 km (0.07 R)
• M6: 3,734,412 km (0.026 R)
• M7: 5,534,822 km (0.099 R)
• M8: 6,766,461 km (0.103 R)
• M9: 11,350,439 km (0.114 R)
• M10: 13,325,580 km (0.114 R)
• M11: 15,333,632 km (0.032 R)
• M12: 17,266,287 km (0.094 R)
• M13: 18,361,044 km (0.114 R)
• M14: 21,222,403 km (0.118 R)
• M15: 23,205,622 km (0.063 R)
• M16: 27,081,703 km (0.119 R)
• M17: 28,091,039 km (0.081 R)
• M18: 36,089,140 km (0.087 R)
• M19: 36,752,158 km (0.053 R)

Planet 7 - Ice Giant

Semi-Major Axis: 5.95 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 89.4

Radius: 5.9

Gravity: 2.57 G

Time & Orbit

Eccentricity (e): 0.169

Orbit Range: 4.94 AU - 6.96 AU

Year: 9521 Days

Day: 25 Hours

Environment

Temp: -222 °C

Axial Tilt: 27.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 49,436,175 km

• M1: 74,350 km (0.089 R)
• M2: 275,410 km (0.111 R)
• M3: 1,432,998 km (0.075 R)
• M4: 1,874,162 km (0.041 R)
• M5: 2,953,062 km (0.064 R)
• M6: 5,039,503 km (0.042 R)
• M7: 6,193,801 km (0.08 R)
• M8: 7,745,879 km (0.071 R)
• M9: 12,173,976 km (0.065 R)
• M10: 12,959,813 km (0.096 R)
• M11: 17,867,072 km (0.077 R)
• M12: 18,518,720 km (0.079 R)
• M13: 19,619,162 km (0.035 R)
• M14: 21,681,668 km (0.106 R)

Planet 8 - Ice Giant

Semi-Major Axis: 10.08 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 170.5

Radius: 7.7

Gravity: 2.88 G

Time & Orbit

Eccentricity (e): 0.206

Orbit Range: 8 AU - 12.16 AU

Year: 20994 Days

Day: 21.2 Hours

Environment

Temp: -227 °C

Axial Tilt: 3.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 49,436,175 km

• M1: 99,931 km (0.074 R)
• M2: 418,425 km (0.097 R)
• M3: 830,268 km (0.118 R)
• M4: 1,077,703 km (0.098 R)
• M5: 1,375,403 km (0.077 R)
• M6: 2,455,799 km (0.111 R)
• M7: 3,471,568 km (0.08 R)
• M8: 4,129,200 km (0.037 R)
• M9: 5,724,662 km (0.095 R)
• M10: 6,300,464 km (0.111 R)
• M11: 7,651,333 km (0.101 R)
• M12: 8,039,090 km (0.111 R)
• M13: 11,021,922 km (0.088 R)
• M14: 13,960,922 km (0.082 R)
• M15: 14,345,538 km (0.086 R)
• M16: 17,458,371 km (0.096 R)
• M17: 18,588,882 km (0.099 R)
• M18: 19,290,047 km (0.083 R)
• M19: 25,169,094 km (0.079 R)
• M20: 38,893,651 km (0.066 R)
• M21: 41,077,182 km (0.108 R)
• M22: 49,288,310 km (0.049 R)

Kuiper Belt

Range: 30 - 54 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 161 - 17,641 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit