🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.33 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.65 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.7

Radius: 0.87

Gravity: 0.92 G

Time & Orbit

Eccentricity (e): 0.17

Orbit Range: 0.54 AU - 0.76 AU

Year: 344 Days

Day: 45.4 Hours

Environment

Temp: -134 °C

Axial Tilt: 33.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 78,993,380 km

• M1: 332,107 km (0.12 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.95 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 786.8

Radius: 12.9

Gravity: 4.73 G

Time & Orbit

Eccentricity (e): 0.016

Orbit Range: 0.93 AU - 0.97 AU

Year: 607 Days

Day: 10.2 Hours

Environment

Temp: -163 °C

Axial Tilt: 23.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 78,993,380 km

• M1: 160,818 km (0.083 R)
• M2: 590,612 km (0.098 R)
• M3: 1,026,989 km (0.11 R)
• M4: 1,650,214 km (0.103 R)
• M5: 2,766,065 km (0.089 R)
• M6: 3,416,666 km (0.115 R)
• M7: 3,863,215 km (0.034 R)
• M8: 4,364,219 km (0.096 R)
• M9: 5,284,395 km (0.11 R)
• M10: 5,791,083 km (0.039 R)
• M11: 6,231,350 km (0.06 R)
• M12: 6,756,139 km (0.095 R)
• M13: 7,576,085 km (0.116 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.72 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 225.5

Radius: 13.6

Gravity: 1.22 G

Time & Orbit

Eccentricity (e): 0.071

Orbit Range: 1.6 AU - 1.84 AU

Year: 1480 Days

Day: 10.5 Hours

Environment

Temp: -180 °C

Axial Tilt: 14.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 78,993,380 km

• M1: 169,195 km (0.093 R)
• M2: 777,460 km (0.05 R)
• M3: 1,298,659 km (0.063 R)
• M4: 1,765,554 km (0.104 R)
• M5: 2,540,920 km (0.05 R)
• M6: 3,052,694 km (0.096 R)
• M7: 3,548,013 km (0.062 R)
• M8: 5,108,318 km (0.091 R)
• M9: 6,300,763 km (0.117 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.83 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 955.5

Radius: 10.7

Gravity: 8.35 G

Time & Orbit

Eccentricity (e): 0.158

Orbit Range: 1.54 AU - 2.12 AU

Year: 1624 Days

Day: 5.7 Hours

Environment

Temp: -187 °C

Axial Tilt: 19.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 78,993,380 km

• M1: 133,142 km (0.108 R)
• M2: 487,539 km (0.094 R)
• M3: 846,275 km (0.107 R)
• M4: 1,470,547 km (0.103 R)
• M5: 2,156,902 km (0.116 R)
• M6: 2,581,162 km (0.055 R)
• M7: 3,169,979 km (0.094 R)
• M8: 3,686,241 km (0.098 R)
• M9: 4,257,855 km (0.116 R)
• M10: 5,394,350 km (0.071 R)
• M11: 7,045,312 km (0.097 R)
• M12: 7,956,961 km (0.081 R)
• M13: 8,410,691 km (0.105 R)
• M14: 9,436,185 km (0.111 R)
• M15: 9,979,375 km (0.064 R)
• M16: 10,869,632 km (0.084 R)
• M17: 11,352,982 km (0.069 R)
• M18: 11,811,949 km (0.042 R)
• M19: 15,241,031 km (0.09 R)

Planet 5 - Gas Giant

Semi-Major Axis: 4.27 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 274.1

Radius: 13.6

Gravity: 1.48 G

Time & Orbit

Eccentricity (e): 0.241

Orbit Range: 3.24 AU - 5.3 AU

Year: 5788 Days

Day: 13.4 Hours

Environment

Temp: -213 °C

Axial Tilt: 32.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 78,993,380 km

• M1: 169,195 km (0.068 R)
• M2: 638,035 km (0.107 R)
• M3: 1,169,556 km (0.117 R)
• M4: 1,647,970 km (0.111 R)
• M5: 2,160,792 km (0.1 R)
• M6: 2,780,127 km (0.094 R)
• M7: 3,325,561 km (0.045 R)
• M8: 6,117,207 km (0.111 R)
• M9: 7,015,542 km (0.047 R)
• M10: 10,162,333 km (0.108 R)
• M11: 15,396,762 km (0.039 R)
• M12: 17,752,929 km (0.048 R)
• M13: 20,729,478 km (0.045 R)
• M14: 22,819,958 km (0.1 R)

Planet 6 - Gas Giant

Semi-Major Axis: 5.18 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 145.9

Radius: 10.4

Gravity: 1.35 G

Time & Orbit

Eccentricity (e): 0.167

Orbit Range: 4.31 AU - 6.05 AU

Year: 7734 Days

Day: 14.9 Hours

Environment

Temp: -218 °C

Axial Tilt: 7.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 78,993,380 km

• M1: 129,402 km (0.099 R)
• M2: 575,802 km (0.116 R)
• M3: 1,140,385 km (0.072 R)
• M4: 1,843,943 km (0.106 R)
• M5: 2,684,085 km (0.118 R)
• M6: 3,110,140 km (0.053 R)
• M7: 3,700,902 km (0.103 R)
• M8: 4,208,338 km (0.078 R)
• M9: 4,761,700 km (0.083 R)
• M10: 7,089,144 km (0.111 R)
• M11: 7,507,270 km (0.073 R)
• M12: 8,571,210 km (0.072 R)
• M13: 9,423,319 km (0.045 R)
• M14: 10,169,214 km (0.1 R)
• M15: 10,536,028 km (0.085 R)
• M16: 10,996,191 km (0.061 R)
• M17: 11,339,369 km (0.111 R)
• M18: 12,047,266 km (0.104 R)
• M19: 13,115,993 km (0.062 R)
• M20: 14,348,081 km (0.103 R)
• M21: 17,617,692 km (0.109 R)
• M22: 19,487,815 km (0.063 R)

Planet 7 - Ice Giant

Semi-Major Axis: 6.05 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 550.1

Radius: 6.8

Gravity: 11.9 G

Time & Orbit

Eccentricity (e): 0.044

Orbit Range: 5.78 AU - 6.32 AU

Year: 9762 Days

Day: 21.3 Hours

Environment

Temp: -224 °C

Axial Tilt: 22 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (27)

Outer Limit: 78,993,380 km

• M1: 89,460 km (0.095 R)
• M2: 399,127 km (0.094 R)
• M3: 801,695 km (0.05 R)
• M4: 1,162,824 km (0.026 R)
• M5: 1,518,418 km (0.098 R)
• M6: 1,819,708 km (0.12 R)
• M7: 2,620,955 km (0.062 R)
• M8: 3,167,286 km (0.076 R)
• M9: 4,744,796 km (0.103 R)
• M10: 5,424,269 km (0.083 R)
• M11: 6,525,908 km (0.068 R)
• M12: 6,898,855 km (0.074 R)
• M13: 8,145,903 km (0.088 R)
• M14: 8,534,559 km (0.064 R)
• M15: 9,348,820 km (0.062 R)
• M16: 10,768,055 km (0.079 R)
• M17: 12,381,468 km (0.11 R)
• M18: 16,214,464 km (0.113 R)
• M19: 17,038,001 km (0.11 R)
• M20: 18,619,549 km (0.112 R)
• M21: 21,333,704 km (0.116 R)
• M22: 28,702,147 km (0.12 R)
• M23: 32,091,735 km (0.059 R)
• M24: 32,305,361 km (0.09 R)
• M25: 32,520,034 km (0.096 R)
• M26: 37,840,482 km (0.099 R)
• M27: 39,042,800 km (0.088 R)

Planet 8 - Ice Giant

Semi-Major Axis: 9.78 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 761.6

Radius: 5.8

Gravity: 22.64 G

Time & Orbit

Eccentricity (e): 0.242

Orbit Range: 7.41 AU - 12.15 AU

Year: 20064 Days

Day: 15.2 Hours

Environment

Temp: -228 °C

Axial Tilt: 2.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (35)

Outer Limit: 78,993,380 km

• M1: 72,256 km (0.093 R)
• M2: 279,598 km (0.07 R)
• M3: 657,333 km (0.108 R)
• M4: 959,222 km (0.076 R)
• M5: 1,247,048 km (0.064 R)
• M6: 2,224,371 km (0.12 R)
• M7: 3,039,230 km (0.118 R)
• M8: 4,102,273 km (0.109 R)
• M9: 4,368,557 km (0.057 R)
• M10: 4,717,718 km (0.09 R)
• M11: 5,471,692 km (0.115 R)
• M12: 6,303,306 km (0.11 R)
• M13: 6,703,630 km (0.091 R)
• M14: 6,887,037 km (0.067 R)
• M15: 7,263,874 km (0.11 R)
• M16: 11,623,306 km (0.113 R)
• M17: 13,059,894 km (0.099 R)
• M18: 14,382,190 km (0.104 R)
• M19: 17,204,503 km (0.094 R)
• M20: 22,864,987 km (0.115 R)
• M21: 23,702,586 km (0.068 R)
• M22: 27,608,885 km (0.087 R)
• M23: 28,558,234 km (0.104 R)
• M24: 32,312,990 km (0.064 R)
• M25: 36,808,706 km (0.089 R)
• M26: 46,018,699 km (0.094 R)
• M27: 46,682,165 km (0.084 R)
• M28: 49,573,294 km (0.113 R)
• M29: 51,151,102 km (0.119 R)
• M30: 55,334,906 km (0.099 R)
• M31: 60,135,053 km (0.096 R)
• M32: 64,375,554 km (0.072 R)
• M33: 72,101,387 km (0.095 R)
• M34: 73,672,164 km (0.105 R)
• M35: 73,898,356 km (0.118 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: 306 - 14,554 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit