🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.28 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.56 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.94

Radius: 1.73

Gravity: 1.32 G

Time & Orbit

Eccentricity (e): 0.047

Orbit Range: 0.53 AU - 0.59 AU

Year: 271 Days

Day: 12.5 Hours

Environment

Temp: -128 °C

Axial Tilt: 44.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 36,921,807 km

• M1: 59,540 km (0.052 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.73 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 751.1

Radius: 13.5

Gravity: 4.12 G

Time & Orbit

Eccentricity (e): 0.038

Orbit Range: 0.7 AU - 0.76 AU

Year: 403 Days

Day: 9.9 Hours

Environment

Temp: -135 °C

Axial Tilt: 6.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 36,921,807 km

• M1: 167,849 km (0.088 R)
• M2: 616,194 km (0.119 R)
• M3: 1,036,264 km (0.104 R)
• M4: 1,473,240 km (0.105 R)
• M5: 1,988,455 km (0.057 R)
• M6: 2,425,430 km (0.098 R)
• M7: 3,012,153 km (0.092 R)
• M8: 3,439,255 km (0.104 R)
• M9: 3,997,853 km (0.075 R)
• M10: 5,219,769 km (0.096 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.99 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 616.8

Radius: 9.5

Gravity: 6.83 G

Time & Orbit

Eccentricity (e): 0.097

Orbit Range: 0.89 AU - 1.09 AU

Year: 636 Days

Day: 8.8 Hours

Environment

Temp: -163 °C

Axial Tilt: 39.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 36,921,807 km

• M1: 118,182 km (0.108 R)
• M2: 468,092 km (0.111 R)
• M3: 1,063,940 km (0.071 R)
• M4: 1,447,958 km (0.099 R)
• M5: 1,781,561 km (0.068 R)
• M6: 2,233,047 km (0.108 R)
• M7: 2,838,021 km (0.027 R)
• M8: 3,431,177 km (0.104 R)
• M9: 3,736,955 km (0.115 R)
• M10: 4,237,659 km (0.052 R)
• M11: 4,574,703 km (0.101 R)
• M12: 5,182,519 km (0.119 R)
• M13: 6,203,525 km (0.077 R)
• M14: 6,598,912 km (0.11 R)
• M15: 7,375,025 km (0.093 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.01 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 828.6

Radius: 12.8

Gravity: 5.06 G

Time & Orbit

Eccentricity (e): 0.105

Orbit Range: 0.9 AU - 1.12 AU

Year: 655 Days

Day: 5.8 Hours

Environment

Temp: -155 °C

Axial Tilt: 15.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 36,921,807 km

• M1: 159,172 km (0.105 R)
• M2: 653,443 km (0.116 R)
• M3: 1,070,971 km (0.119 R)
• M4: 1,513,930 km (0.057 R)
• M5: 2,109,180 km (0.1 R)
• M6: 2,940,197 km (0.099 R)
• M7: 3,485,630 km (0.093 R)
• M8: 3,891,190 km (0.09 R)
• M9: 4,616,141 km (0.099 R)
• M10: 5,392,854 km (0.087 R)
• M11: 5,860,945 km (0.064 R)
• M12: 6,295,378 km (0.064 R)
• M13: 7,318,477 km (0.063 R)
• M14: 7,776,247 km (0.079 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.64 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 772.5

Radius: 9.2

Gravity: 9.13 G

Time & Orbit

Eccentricity (e): 0.181

Orbit Range: 1.34 AU - 1.94 AU

Year: 1356 Days

Day: 13 Hours

Environment

Temp: -187 °C

Axial Tilt: 32.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 36,921,807 km

• M1: 115,490 km (0.109 R)
• M2: 466,895 km (0.084 R)
• M3: 1,196,484 km (0.073 R)
• M4: 1,522,308 km (0.082 R)
• M5: 2,091,079 km (0.047 R)
• M6: 2,419,297 km (0.055 R)
• M7: 2,878,263 km (0.09 R)
• M8: 3,699,555 km (0.055 R)
• M9: 5,151,253 km (0.09 R)
• M10: 5,556,065 km (0.093 R)
• M11: 6,167,621 km (0.099 R)
• M12: 7,498,294 km (0.109 R)
• M13: 8,159,965 km (0.074 R)
• M14: 9,071,615 km (0.092 R)
• M15: 9,379,786 km (0.073 R)
• M16: 9,887,372 km (0.088 R)
• M17: 12,401,364 km (0.113 R)
• M18: 13,169,101 km (0.11 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.71 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 69.4

Radius: 8.9

Gravity: 0.88 G

Time & Orbit

Eccentricity (e): 0.198

Orbit Range: 1.37 AU - 2.05 AU

Year: 1444 Days

Day: 5.9 Hours

Environment

Temp: -184 °C

Axial Tilt: 33.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 36,921,807 km

• M1: 114,143 km (0.091 R)
• M2: 436,826 km (0.089 R)
• M3: 721,810 km (0.045 R)
• M4: 1,307,336 km (0.108 R)
• M5: 1,769,144 km (0.064 R)
• M6: 2,308,894 km (0.03 R)
• M7: 2,943,637 km (0.084 R)
• M8: 3,702,846 km (0.054 R)
• M9: 5,436,985 km (0.047 R)
• M10: 5,812,027 km (0.071 R)

Planet 7 - Gas Giant

Semi-Major Axis: 2.18 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 261.3

Radius: 14.8

Gravity: 1.19 G

Time & Orbit

Eccentricity (e): 0.196

Orbit Range: 1.75 AU - 2.61 AU

Year: 2078 Days

Day: 9.6 Hours

Environment

Temp: -188 °C

Axial Tilt: 6.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 36,921,807 km

• M1: 184,753 km (0.116 R)
• M2: 668,852 km (0.031 R)
• M3: 1,159,234 km (0.111 R)
• M4: 1,853,817 km (0.044 R)
• M5: 2,444,130 km (0.028 R)
• M6: 2,978,344 km (0.102 R)
• M7: 3,813,250 km (0.09 R)
• M8: 4,483,598 km (0.073 R)
• M9: 5,374,603 km (0.079 R)
• M10: 5,950,854 km (0.113 R)
• M11: 6,520,971 km (0.107 R)
• M12: 7,102,608 km (0.115 R)
• M13: 7,771,759 km (0.094 R)
• M14: 8,767,482 km (0.066 R)
• M15: 9,266,541 km (0.096 R)
• M16: 10,003,310 km (0.063 R)
• M17: 10,779,125 km (0.07 R)

Planet 8 - Gas Giant

Semi-Major Axis: 2.8 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 820.6

Radius: 12.7

Gravity: 5.09 G

Time & Orbit

Eccentricity (e): 0.12

Orbit Range: 2.46 AU - 3.14 AU

Year: 3025 Days

Day: 10.1 Hours

Environment

Temp: -195 °C

Axial Tilt: 19.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 36,921,807 km

• M1: 157,975 km (0.099 R)
• M2: 674,387 km (0.057 R)
• M3: 1,101,639 km (0.045 R)
• M4: 1,627,026 km (0.086 R)
• M5: 2,085,544 km (0.111 R)
• M6: 2,599,712 km (0.057 R)
• M7: 3,269,910 km (0.089 R)
• M8: 3,705,689 km (0.097 R)
• M9: 5,005,694 km (0.094 R)
• M10: 6,074,571 km (0.071 R)
• M11: 6,619,107 km (0.08 R)
• M12: 9,352,859 km (0.08 R)
• M13: 10,438,191 km (0.059 R)
• M14: 11,476,550 km (0.072 R)
• M15: 14,051,130 km (0.092 R)
• M16: 14,649,371 km (0.111 R)
• M17: 16,601,325 km (0.078 R)
• M18: 18,780,965 km (0.066 R)
• M19: 19,323,856 km (0.066 R)
• M20: 21,405,062 km (0.108 R)

Planet 9 - Ice Giant

Semi-Major Axis: 7.06 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 213.4

Radius: 6.2

Gravity: 5.55 G

Time & Orbit

Eccentricity (e): 0.027

Orbit Range: 6.87 AU - 7.25 AU

Year: 12112 Days

Day: 18.3 Hours

Environment

Temp: -230 °C

Axial Tilt: 8.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 36,921,807 km

• M1: 77,193 km (0.088 R)
• M2: 385,364 km (0.08 R)
• M3: 1,958,535 km (0.055 R)
• M4: 3,547,714 km (0.096 R)
• M5: 4,850,561 km (0.09 R)
• M6: 5,257,767 km (0.119 R)
• M7: 7,491,413 km (0.089 R)
• M8: 9,555,714 km (0.086 R)
• M9: 13,601,438 km (0.034 R)
• M10: 15,996,949 km (0.05 R)
• M11: 16,832,453 km (0.118 R)
• M12: 17,696,680 km (0.087 R)
• M13: 18,870,874 km (0.089 R)
• M14: 21,993,131 km (0.062 R)
• M15: 25,271,419 km (0.116 R)
• M16: 26,139,086 km (0.094 R)
• M17: 28,395,022 km (0.057 R)
• M18: 30,679,681 km (0.115 R)
• M19: 30,973,641 km (0.113 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: 487 - 17,278 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit