🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.32 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.63 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.31

Radius: 1.4

Gravity: 1.18 G

Time & Orbit

Eccentricity (e): 0.06

Orbit Range: 0.59 AU - 0.67 AU

Year: 323 Days

Day: 22 Hours

Environment

Temp: -122 °C

Axial Tilt: 24.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 41,194,698 km

• M1: 37,100 km (0.082 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.89 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 834.2

Radius: 13

Gravity: 4.94 G

Time & Orbit

Eccentricity (e): 0.098

Orbit Range: 0.8 AU - 0.98 AU

Year: 542 Days

Day: 13.8 Hours

Environment

Temp: -144 °C

Axial Tilt: 28.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 41,194,698 km

• M1: 161,715 km (0.103 R)
• M2: 610,359 km (0.094 R)
• M3: 1,068,727 km (0.075 R)
• M4: 1,641,837 km (0.073 R)
• M5: 2,158,248 km (0.066 R)
• M6: 3,067,355 km (0.075 R)
• M7: 3,819,234 km (0.082 R)
• M8: 4,690,641 km (0.086 R)
• M9: 6,155,354 km (0.115 R)
• M10: 6,993,401 km (0.069 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.12 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 307.8

Radius: 8.2

Gravity: 4.58 G

Time & Orbit

Eccentricity (e): 0.163

Orbit Range: 0.94 AU - 1.3 AU

Year: 765 Days

Day: 12.9 Hours

Environment

Temp: -157 °C

Axial Tilt: 15.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 41,194,698 km

• M1: 102,026 km (0.12 R)
• M2: 364,869 km (0.097 R)
• M3: 642,074 km (0.089 R)
• M4: 901,926 km (0.052 R)
• M5: 1,234,033 km (0.107 R)
• M6: 1,580,950 km (0.111 R)
• M7: 2,668,228 km (0.058 R)
• M8: 3,438,208 km (0.105 R)
• M9: 3,760,741 km (0.112 R)
• M10: 4,131,893 km (0.077 R)
• M11: 4,572,758 km (0.088 R)
• M12: 6,598,313 km (0.086 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.76 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 133.6

Radius: 13.7

Gravity: 0.71 G

Time & Orbit

Eccentricity (e): 0.211

Orbit Range: 1.39 AU - 2.13 AU

Year: 1508 Days

Day: 9.7 Hours

Environment

Temp: -190 °C

Axial Tilt: 9.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 41,194,698 km

• M1: 172,337 km (0.089 R)
• M2: 599,738 km (0.092 R)
• M3: 1,410,558 km (0.116 R)
• M4: 1,842,747 km (0.046 R)
• M5: 2,385,188 km (0.087 R)
• M6: 3,687,288 km (0.063 R)
• M7: 4,325,323 km (0.054 R)
• M8: 7,028,706 km (0.064 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.93 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 901.9

Radius: 13.6

Gravity: 4.88 G

Time & Orbit

Eccentricity (e): 0.053

Orbit Range: 1.83 AU - 2.03 AU

Year: 1731 Days

Day: 8.2 Hours

Environment

Temp: -192 °C

Axial Tilt: 59.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 41,194,698 km

• M1: 169,345 km (0.081 R)
• M2: 713,283 km (0.117 R)
• M3: 1,516,922 km (0.047 R)
• M4: 1,955,095 km (0.081 R)
• M5: 2,400,896 km (0.063 R)
• M6: 4,265,334 km (0.1 R)
• M7: 6,529,498 km (0.058 R)
• M8: 8,500,001 km (0.102 R)
• M9: 10,192,552 km (0.099 R)
• M10: 11,554,192 km (0.074 R)
• M11: 12,020,937 km (0.085 R)
• M12: 12,744,691 km (0.1 R)
• M13: 15,556,084 km (0.077 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.35 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 324.1

Radius: 10.8

Gravity: 2.78 G

Time & Orbit

Eccentricity (e): 0.173

Orbit Range: 1.94 AU - 2.76 AU

Year: 2326 Days

Day: 7 Hours

Environment

Temp: -188 °C

Axial Tilt: 32.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 41,194,698 km

• M1: 138,378 km (0.095 R)
• M2: 508,334 km (0.075 R)
• M3: 1,185,862 km (0.114 R)
• M4: 1,587,084 km (0.105 R)
• M5: 2,023,311 km (0.107 R)
• M6: 2,424,383 km (0.119 R)
• M7: 2,850,288 km (0.057 R)
• M8: 3,187,033 km (0.051 R)
• M9: 3,700,154 km (0.1 R)
• M10: 4,267,728 km (0.112 R)
• M11: 6,156,252 km (0.079 R)
• M12: 7,298,431 km (0.08 R)
• M13: 7,736,903 km (0.097 R)
• M14: 8,972,282 km (0.083 R)
• M15: 9,800,306 km (0.086 R)
• M16: 11,719,048 km (0.057 R)
• M17: 12,398,223 km (0.091 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.74 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 567.8

Radius: 14.5

Gravity: 2.7 G

Time & Orbit

Eccentricity (e): 0.012

Orbit Range: 3.7 AU - 3.78 AU

Year: 4670 Days

Day: 10.3 Hours

Environment

Temp: -218 °C

Axial Tilt: 31.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 41,194,698 km

• M1: 181,163 km (0.098 R)
• M2: 797,057 km (0.058 R)
• M3: 1,257,221 km (0.118 R)
• M4: 1,890,468 km (0.048 R)
• M5: 2,520,874 km (0.101 R)
• M6: 4,053,953 km (0.09 R)
• M7: 5,822,948 km (0.072 R)
• M8: 6,291,189 km (0.033 R)
• M9: 11,089,989 km (0.065 R)
• M10: 12,328,361 km (0.053 R)
• M11: 13,964,662 km (0.108 R)
• M12: 18,154,599 km (0.111 R)
• M13: 19,938,105 km (0.115 R)
• M14: 22,116,400 km (0.111 R)
• M15: 24,600,173 km (0.092 R)
• M16: 25,210,682 km (0.086 R)
• M17: 25,831,214 km (0.064 R)

Planet 8 - Ice Giant

Semi-Major Axis: 9.94 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 106.2

Radius: 6.8

Gravity: 2.3 G

Time & Orbit

Eccentricity (e): 0.133

Orbit Range: 8.62 AU - 11.26 AU

Year: 20235 Days

Day: 20.7 Hours

Environment

Temp: -237 °C

Axial Tilt: 9.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 41,194,698 km

• M1: 88,113 km (0.109 R)
• M2: 597,943 km (0.084 R)
• M3: 967,749 km (0.119 R)
• M4: 1,589,029 km (0.057 R)
• M5: 3,586,459 km (0.07 R)
• M6: 4,574,404 km (0.12 R)
• M7: 6,999,086 km (0.076 R)
• M8: 7,304,116 km (0.099 R)
• M9: 7,859,274 km (0.089 R)
• M10: 8,399,621 km (0.049 R)
• M11: 11,013,545 km (0.089 R)
• M12: 12,448,936 km (0.118 R)
• M13: 15,174,460 km (0.075 R)
• M14: 18,925,926 km (0.064 R)
• M15: 20,975,417 km (0.048 R)
• M16: 22,013,177 km (0.043 R)
• M17: 24,363,808 km (0.092 R)
• M18: 28,676,865 km (0.053 R)
• M19: 29,854,499 km (0.038 R)
• M20: 31,680,790 km (0.098 R)
• M21: 32,515,845 km (0.062 R)
• M22: 32,938,908 km (0.114 R)
• M23: 36,342,708 km (0.049 R)
• M24: 39,252,836 km (0.071 R)
• M25: 41,194,766 km (0.109 R)

Kuiper Belt

Range: 30 - 58 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 429 - 12,114 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit