🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.29 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.58 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.47

Radius: 1.44

Gravity: 1.19 G

Time & Orbit

Eccentricity (e): 0.023

Orbit Range: 0.57 AU - 0.59 AU

Year: 281 Days

Day: 44.3 Hours

Environment

Temp: -117 °C

Axial Tilt: 145.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 57,552,398 km

• M1: 33,510 km (0.095 R)
• M2: 628,311 km (0.073 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.63 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.95

Radius: 1.31

Gravity: 1.14 G

Time & Orbit

Eccentricity (e): 0.24

Orbit Range: 0.48 AU - 0.78 AU

Year: 318 Days

Day: 46.5 Hours

Environment

Temp: -126 °C

Axial Tilt: 36.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 57,552,398 km

• M1: 679,773 km (0.093 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.89 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 71.8

Radius: 11.9

Gravity: 0.51 G

Time & Orbit

Eccentricity (e): 0.063

Orbit Range: 0.83 AU - 0.95 AU

Year: 534 Days

Day: 6.8 Hours

Environment

Temp: -146 °C

Axial Tilt: 7.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 57,552,398 km

• M1: 147,952 km (0.109 R)
• M2: 518,656 km (0.115 R)
• M3: 904,918 km (0.094 R)
• M4: 1,391,410 km (0.114 R)
• M5: 1,940,135 km (0.099 R)
• M6: 2,376,063 km (0.104 R)
• M7: 2,911,474 km (0.12 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 668

Radius: 13.6

Gravity: 3.61 G

Time & Orbit

Eccentricity (e): 0.087

Orbit Range: 0.91 AU - 1.09 AU

Year: 636 Days

Day: 8.1 Hours

Environment

Temp: -161 °C

Axial Tilt: 24 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 57,552,398 km

• M1: 169,195 km (0.092 R)
• M2: 664,514 km (0.109 R)
• M3: 1,240,316 km (0.087 R)
• M4: 1,924,876 km (0.084 R)
• M5: 2,863,752 km (0.071 R)
• M6: 3,819,084 km (0.082 R)
• M7: 4,494,518 km (0.056 R)
• M8: 5,162,623 km (0.053 R)
• M9: 6,677,899 km (0.107 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.2 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 123.6

Radius: 8

Gravity: 1.93 G

Time & Orbit

Eccentricity (e): 0.132

Orbit Range: 1.04 AU - 1.36 AU

Year: 836 Days

Day: 5.5 Hours

Environment

Temp: -165 °C

Axial Tilt: 75 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 57,552,398 km

• M1: 100,231 km (0.086 R)
• M2: 417,228 km (0.103 R)
• M3: 722,857 km (0.089 R)
• M4: 1,126,622 km (0.117 R)
• M5: 1,520,064 km (0.117 R)
• M6: 2,768,458 km (0.068 R)
• M7: 3,229,220 km (0.093 R)
• M8: 3,631,488 km (0.104 R)
• M9: 4,041,087 km (0.11 R)
• M10: 5,147,364 km (0.083 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.33 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 162.9

Radius: 12.4

Gravity: 1.06 G

Time & Orbit

Eccentricity (e): 0.156

Orbit Range: 1.12 AU - 1.54 AU

Year: 975 Days

Day: 6.7 Hours

Environment

Temp: -165 °C

Axial Tilt: 5.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 57,552,398 km

• M1: 154,235 km (0.036 R)
• M2: 638,783 km (0.078 R)
• M3: 1,308,981 km (0.117 R)
• M4: 2,092,575 km (0.074 R)
• M5: 2,581,311 km (0.033 R)
• M6: 2,967,274 km (0.093 R)
• M7: 3,897,025 km (0.085 R)

Planet 7 - Gas Giant

Semi-Major Axis: 2.09 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 625.1

Radius: 12.3

Gravity: 4.13 G

Time & Orbit

Eccentricity (e): 0.232

Orbit Range: 1.61 AU - 2.57 AU

Year: 1921 Days

Day: 12.9 Hours

Environment

Temp: -198 °C

Axial Tilt: 8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 57,552,398 km

• M1: 154,834 km (0.082 R)
• M2: 613,950 km (0.101 R)
• M3: 1,041,351 km (0.114 R)
• M4: 1,530,985 km (0.076 R)
• M5: 2,283,163 km (0.09 R)
• M6: 2,716,847 km (0.094 R)
• M7: 3,221,291 km (0.103 R)
• M8: 3,823,422 km (0.032 R)
• M9: 4,227,486 km (0.039 R)
• M10: 5,409,908 km (0.073 R)
• M11: 6,388,876 km (0.118 R)
• M12: 7,122,803 km (0.081 R)
• M13: 9,532,077 km (0.059 R)
• M14: 11,932,525 km (0.058 R)
• M15: 13,543,993 km (0.057 R)

Planet 8 - Gas Giant

Semi-Major Axis: 3.96 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 403.3

Radius: 13.8

Gravity: 2.12 G

Time & Orbit

Eccentricity (e): 0.195

Orbit Range: 3.19 AU - 4.73 AU

Year: 5010 Days

Day: 12.5 Hours

Environment

Temp: -208 °C

Axial Tilt: 26.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 57,552,398 km

• M1: 172,486 km (0.101 R)
• M2: 928,853 km (0.108 R)
• M3: 1,868,627 km (0.1 R)
• M4: 2,955,456 km (0.073 R)
• M5: 3,961,651 km (0.093 R)
• M6: 4,451,584 km (0.058 R)
• M7: 4,956,925 km (0.1 R)
• M8: 5,581,497 km (0.086 R)
• M9: 9,883,632 km (0.097 R)
• M10: 10,413,209 km (0.089 R)
• M11: 11,529,508 km (0.062 R)
• M12: 14,203,420 km (0.064 R)
• M13: 14,826,196 km (0.074 R)
• M14: 16,294,200 km (0.05 R)
• M15: 24,448,032 km (0.075 R)

Planet 9 - Ice Giant

Semi-Major Axis: 9.23 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 373

Radius: 3.4

Gravity: 32.27 G

Time & Orbit

Eccentricity (e): 0.19

Orbit Range: 7.48 AU - 10.98 AU

Year: 17829 Days

Day: 20.2 Hours

Environment

Temp: -235 °C

Axial Tilt: 49.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (28)

Outer Limit: 57,552,398 km

• M1: 61,186 km (0.101 R)
• M2: 760,406 km (0.118 R)
• M3: 1,100,442 km (0.118 R)
• M4: 1,387,670 km (0.11 R)
• M5: 2,109,031 km (0.092 R)
• M6: 2,465,971 km (0.067 R)
• M7: 4,395,036 km (0.099 R)
• M8: 6,089,681 km (0.108 R)
• M9: 7,102,458 km (0.105 R)
• M10: 13,224,751 km (0.108 R)
• M11: 13,550,575 km (0.071 R)
• M12: 13,881,635 km (0.112 R)
• M13: 14,015,525 km (0.033 R)
• M14: 17,729,292 km (0.034 R)
• M15: 18,205,163 km (0.065 R)
• M16: 20,625,806 km (0.089 R)
• M17: 20,800,238 km (0.088 R)
• M18: 21,687,203 km (0.117 R)
• M19: 22,970,903 km (0.042 R)
• M20: 26,502,609 km (0.1 R)
• M21: 28,612,837 km (0.116 R)
• M22: 29,931,392 km (0.087 R)
• M23: 34,128,809 km (0.044 R)
• M24: 38,306,031 km (0.051 R)
• M25: 38,701,867 km (0.101 R)
• M26: 45,117,371 km (0.118 R)
• M27: 52,692,708 km (0.091 R)
• M28: 57,208,021 km (0.09 R)

Kuiper Belt

Range: 30 - 47 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 241 - 14,716 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit