🌌 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: 2.04

Radius: 1.33

Gravity: 1.15 G

Time & Orbit

Eccentricity (e): 0.167

Orbit Range: 0.42 AU - 0.6 AU

Year: 239 Days

Day: 36.9 Hours

Environment

Temp: -109 °C

Axial Tilt: 38.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.65 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.95

Radius: 1.54

Gravity: 1.24 G

Time & Orbit

Eccentricity (e): 0.116

Orbit Range: 0.57 AU - 0.73 AU

Year: 344 Days

Day: 36.6 Hours

Environment

Temp: -137 °C

Axial Tilt: 20 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.9 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 980.3

Radius: 8.5

Gravity: 13.57 G

Time & Orbit

Eccentricity (e): 0.044

Orbit Range: 0.86 AU - 0.94 AU

Year: 560 Days

Day: 13.9 Hours

Environment

Temp: -157 °C

Axial Tilt: 48.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 52,490,818 km

• M1: 106,364 km (0.113 R)
• M2: 398,978 km (0.075 R)
• M3: 850,314 km (0.048 R)
• M4: 1,221,766 km (0.076 R)
• M5: 1,550,582 km (0.102 R)
• M6: 2,010,446 km (0.113 R)
• M7: 2,278,076 km (0.11 R)
• M8: 3,103,408 km (0.113 R)
• M9: 3,543,974 km (0.096 R)
• M10: 4,115,288 km (0.093 R)
• M11: 4,391,595 km (0.106 R)
• M12: 4,999,112 km (0.037 R)
• M13: 5,513,579 km (0.062 R)
• M14: 6,300,464 km (0.082 R)
• M15: 6,837,071 km (0.082 R)
• M16: 7,471,217 km (0.034 R)
• M17: 7,767,869 km (0.051 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.23 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 805

Radius: 13.6

Gravity: 4.35 G

Time & Orbit

Eccentricity (e): 0.153

Orbit Range: 1.04 AU - 1.42 AU

Year: 895 Days

Day: 10.4 Hours

Environment

Temp: -168 °C

Axial Tilt: 24 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 52,490,818 km

• M1: 169,195 km (0.082 R)
• M2: 606,769 km (0.037 R)
• M3: 1,255,874 km (0.052 R)
• M4: 1,684,322 km (0.1 R)
• M5: 2,161,240 km (0.103 R)
• M6: 2,876,767 km (0.084 R)
• M7: 4,152,687 km (0.099 R)
• M8: 4,873,151 km (0.06 R)
• M9: 5,838,356 km (0.12 R)
• M10: 6,388,727 km (0.097 R)
• M11: 6,927,279 km (0.073 R)
• M12: 7,496,050 km (0.086 R)
• M13: 7,993,762 km (0.108 R)
• M14: 8,513,465 km (0.12 R)
• M15: 8,945,504 km (0.114 R)
• M16: 10,060,457 km (0.111 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.29 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 324.5

Radius: 12.9

Gravity: 1.95 G

Time & Orbit

Eccentricity (e): 0.21

Orbit Range: 1.02 AU - 1.56 AU

Year: 961 Days

Day: 9.3 Hours

Environment

Temp: -181 °C

Axial Tilt: 43.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 52,490,818 km

• M1: 160,519 km (0.11 R)
• M2: 575,204 km (0.084 R)
• M3: 1,080,695 km (0.111 R)
• M4: 1,620,444 km (0.034 R)
• M5: 2,164,232 km (0.084 R)
• M6: 2,783,418 km (0.095 R)
• M7: 3,197,505 km (0.104 R)
• M8: 3,889,694 km (0.101 R)
• M9: 5,815,318 km (0.065 R)
• M10: 6,238,830 km (0.111 R)
• M11: 6,849,488 km (0.108 R)
• M12: 7,256,843 km (0.064 R)
• M13: 7,840,424 km (0.059 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.49 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 382

Radius: 12

Gravity: 2.65 G

Time & Orbit

Eccentricity (e): 0.121

Orbit Range: 1.31 AU - 1.67 AU

Year: 1193 Days

Day: 6.9 Hours

Environment

Temp: -188 °C

Axial Tilt: 16.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 52,490,818 km

• M1: 149,299 km (0.1 R)
• M2: 797,955 km (0.078 R)
• M3: 1,892,413 km (0.052 R)
• M4: 2,392,519 km (0.066 R)
• M5: 3,228,023 km (0.088 R)
• M6: 5,096,201 km (0.117 R)
• M7: 5,909,565 km (0.078 R)
• M8: 7,265,819 km (0.09 R)
• M9: 8,660,520 km (0.062 R)

Planet 7 - Gas Giant

Semi-Major Axis: 4.22 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 416.6

Radius: 12.9

Gravity: 2.5 G

Time & Orbit

Eccentricity (e): 0.194

Orbit Range: 3.4 AU - 5.04 AU

Year: 5687 Days

Day: 6.5 Hours

Environment

Temp: -220 °C

Axial Tilt: 6.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 52,490,818 km

• M1: 160,519 km (0.025 R)
• M2: 630,854 km (0.067 R)
• M3: 1,034,918 km (0.115 R)
• M4: 2,213,749 km (0.101 R)
• M5: 3,666,644 km (0.095 R)
• M6: 5,053,865 km (0.083 R)
• M7: 5,456,882 km (0.083 R)
• M8: 7,771,759 km (0.085 R)
• M9: 8,571,060 km (0.116 R)
• M10: 9,504,850 km (0.119 R)
• M11: 11,436,907 km (0.091 R)
• M12: 11,993,710 km (0.114 R)
• M13: 13,262,300 km (0.083 R)
• M14: 16,528,919 km (0.106 R)
• M15: 17,422,617 km (0.101 R)
• M16: 18,222,965 km (0.042 R)
• M17: 19,306,503 km (0.107 R)
• M18: 20,499,995 km (0.056 R)
• M19: 24,300,080 km (0.069 R)

Planet 8 - Gas Giant

Semi-Major Axis: 4.37 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 593.6

Radius: 12.6

Gravity: 3.74 G

Time & Orbit

Eccentricity (e): 0.001

Orbit Range: 4.37 AU - 4.37 AU

Year: 5993 Days

Day: 9.7 Hours

Environment

Temp: -222 °C

Axial Tilt: 25.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 52,490,818 km

• M1: 156,779 km (0.103 R)
• M2: 597,943 km (0.092 R)
• M3: 1,056,011 km (0.117 R)
• M4: 2,655,811 km (0.029 R)
• M5: 4,394,587 km (0.113 R)
• M6: 4,969,342 km (0.116 R)
• M7: 5,593,913 km (0.086 R)
• M8: 6,398,899 km (0.075 R)
• M9: 6,829,592 km (0.112 R)
• M10: 7,860,919 km (0.108 R)
• M11: 8,630,900 km (0.112 R)
• M12: 10,638,204 km (0.059 R)
• M13: 11,775,596 km (0.064 R)
• M14: 12,172,180 km (0.113 R)
• M15: 12,835,797 km (0.081 R)
• M16: 14,291,234 km (0.089 R)
• M17: 19,385,042 km (0.111 R)
• M18: 20,079,176 km (0.086 R)
• M19: 20,717,959 km (0.105 R)
• M20: 22,336,608 km (0.096 R)
• M21: 27,523,764 km (0.057 R)
• M22: 29,568,917 km (0.062 R)
• M23: 30,768,542 km (0.077 R)
• M24: 31,333,124 km (0.12 R)

Asteroid Belt

Center: 6.91 AU

Composition

Type: Outer System (Icy)

A dense region of planetesimals and debris.

Boundary

Planet 9 - Ice Giant

Semi-Major Axis: 9.45 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 247.7

Radius: 7.9

Gravity: 3.97 G

Time & Orbit

Eccentricity (e): 0.09

Orbit Range: 8.6 AU - 10.3 AU

Year: 19057 Days

Day: 17.4 Hours

Environment

Temp: -225 °C

Axial Tilt: 14.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 52,490,818 km

• M1: 98,286 km (0.082 R)
• M2: 469,139 km (0.058 R)
• M3: 850,015 km (0.081 R)
• M4: 1,175,989 km (0.102 R)
• M5: 2,249,653 km (0.118 R)
• M6: 2,522,370 km (0.045 R)
• M7: 3,552,949 km (0.112 R)
• M8: 5,000,907 km (0.104 R)
• M9: 5,366,076 km (0.095 R)
• M10: 8,673,236 km (0.118 R)
• M11: 10,162,931 km (0.081 R)
• M12: 11,358,518 km (0.102 R)
• M13: 15,505,819 km (0.118 R)
• M14: 16,864,617 km (0.115 R)
• M15: 20,229,671 km (0.065 R)
• M16: 21,937,181 km (0.104 R)
• M17: 23,006,657 km (0.108 R)
• M18: 24,675,421 km (0.071 R)
• M19: 26,822,749 km (0.082 R)
• M20: 27,327,641 km (0.094 R)
• M21: 30,055,708 km (0.109 R)
• M22: 34,361,584 km (0.115 R)
• M23: 36,537,634 km (0.104 R)
• M24: 39,449,706 km (0.034 R)
• M25: 46,451,784 km (0.066 R)

Kuiper Belt

Range: 30 - 60 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 358 - 12,122 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit