🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.31 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.61 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4

Radius: 1.74

Gravity: 1.32 G

Time & Orbit

Eccentricity (e): 0.045

Orbit Range: 0.58 AU - 0.64 AU

Year: 303 Days

Day: 22.8 Hours

Environment

Temp: -123 °C

Axial Tilt: 9.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.68 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 863.4

Radius: 10.6

Gravity: 7.68 G

Time & Orbit

Eccentricity (e): 0.002

Orbit Range: 0.68 AU - 0.68 AU

Year: 357 Days

Day: 14.7 Hours

Environment

Temp: -144 °C

Axial Tilt: 85.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 64,943,489 km

• M1: 133,142 km (0.114 R)
• M2: 531,820 km (0.084 R)
• M3: 897,438 km (0.104 R)
• M4: 1,554,172 km (0.084 R)
• M5: 2,067,293 km (0.079 R)
• M6: 2,681,243 km (0.117 R)
• M7: 3,031,750 km (0.101 R)
• M8: 3,543,076 km (0.081 R)
• M9: 4,438,569 km (0.058 R)
• M10: 5,270,931 km (0.111 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.85 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 970.3

Radius: 9.5

Gravity: 10.75 G

Time & Orbit

Eccentricity (e): 0.203

Orbit Range: 0.68 AU - 1.02 AU

Year: 498 Days

Day: 8 Hours

Environment

Temp: -141 °C

Axial Tilt: 13.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 64,943,489 km

• M1: 118,332 km (0.096 R)
• M2: 415,134 km (0.084 R)
• M3: 843,882 km (0.103 R)
• M4: 1,377,497 km (0.057 R)
• M5: 1,843,794 km (0.118 R)
• M6: 2,504,717 km (0.111 R)
• M7: 2,942,291 km (0.111 R)
• M8: 3,315,986 km (0.083 R)
• M9: 3,627,000 km (0.103 R)
• M10: 4,203,700 km (0.079 R)
• M11: 5,504,304 km (0.108 R)
• M12: 6,074,272 km (0.093 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.01 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 556.5

Radius: 10.9

Gravity: 4.68 G

Time & Orbit

Eccentricity (e): 0.093

Orbit Range: 0.92 AU - 1.1 AU

Year: 645 Days

Day: 13.5 Hours

Environment

Temp: -159 °C

Axial Tilt: 6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 64,943,489 km

• M1: 135,536 km (0.117 R)
• M2: 481,705 km (0.087 R)
• M3: 822,788 km (0.055 R)
• M4: 1,443,171 km (0.032 R)
• M5: 1,859,352 km (0.11 R)
• M6: 2,620,207 km (0.041 R)
• M7: 3,396,769 km (0.101 R)
• M8: 3,791,408 km (0.082 R)
• M9: 4,275,806 km (0.058 R)
• M10: 5,651,508 km (0.084 R)
• M11: 6,151,016 km (0.063 R)
• M12: 6,842,158 km (0.12 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.11 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 35

Radius: 8.4

Gravity: 0.5 G

Time & Orbit

Eccentricity (e): 0.179

Orbit Range: 0.91 AU - 1.31 AU

Year: 744 Days

Day: 11 Hours

Environment

Temp: -171 °C

Axial Tilt: 36.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 64,943,489 km

• M1: 104,419 km (0.074 R)
• M2: 402,418 km (0.053 R)
• M3: 751,430 km (0.062 R)
• M4: 1,336,657 km (0.098 R)
• M5: 1,615,059 km (0.097 R)
• M6: 2,086,142 km (0.089 R)
• M7: 2,629,931 km (0.091 R)
• M8: 2,914,017 km (0.058 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.63 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 456.6

Radius: 8.4

Gravity: 6.47 G

Time & Orbit

Eccentricity (e): 0.238

Orbit Range: 1.24 AU - 2.02 AU

Year: 1323 Days

Day: 11.4 Hours

Environment

Temp: -175 °C

Axial Tilt: 33.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 64,943,489 km

• M1: 104,868 km (0.071 R)
• M2: 444,306 km (0.117 R)
• M3: 709,393 km (0.098 R)
• M4: 1,194,090 km (0.117 R)
• M5: 1,474,885 km (0.099 R)
• M6: 1,995,486 km (0.087 R)
• M7: 2,282,415 km (0.081 R)
• M8: 2,633,671 km (0.104 R)
• M9: 3,034,443 km (0.089 R)
• M10: 4,123,516 km (0.12 R)
• M11: 4,665,359 km (0.073 R)
• M12: 5,638,344 km (0.102 R)
• M13: 6,063,351 km (0.115 R)
• M14: 7,467,477 km (0.062 R)
• M15: 9,661,030 km (0.048 R)
• M16: 10,647,778 km (0.103 R)

Planet 7 - Gas Giant

Semi-Major Axis: 1.88 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 140.6

Radius: 12.4

Gravity: 0.91 G

Time & Orbit

Eccentricity (e): 0.175

Orbit Range: 1.55 AU - 2.21 AU

Year: 1639 Days

Day: 11.2 Hours

Environment

Temp: -190 °C

Axial Tilt: 34.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 64,943,489 km

• M1: 154,235 km (0.079 R)
• M2: 555,158 km (0.059 R)
• M3: 1,413,101 km (0.102 R)
• M4: 1,810,134 km (0.092 R)
• M5: 2,458,491 km (0.084 R)
• M6: 3,017,987 km (0.042 R)
• M7: 5,029,181 km (0.114 R)
• M8: 6,377,956 km (0.113 R)
• M9: 6,841,410 km (0.061 R)
• M10: 7,418,110 km (0.115 R)
• M11: 8,319,138 km (0.049 R)

Planet 8 - Ice Giant

Semi-Major Axis: 9 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 578.1

Radius: 7

Gravity: 11.8 G

Time & Orbit

Eccentricity (e): 0.036

Orbit Range: 8.68 AU - 9.32 AU

Year: 17167 Days

Day: 17.3 Hours

Environment

Temp: -236 °C

Axial Tilt: 32.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 64,943,489 km

• M1: 87,066 km (0.058 R)
• M2: 553,363 km (0.116 R)
• M3: 1,363,585 km (0.109 R)
• M4: 1,588,430 km (0.088 R)
• M5: 4,524,438 km (0.09 R)
• M6: 4,823,783 km (0.095 R)
• M7: 6,692,560 km (0.08 R)
• M8: 10,585,994 km (0.114 R)
• M9: 12,416,922 km (0.106 R)
• M10: 13,071,413 km (0.103 R)
• M11: 15,026,508 km (0.112 R)
• M12: 29,465,993 km (0.042 R)
• M13: 31,460,432 km (0.114 R)
• M14: 43,984,168 km (0.114 R)
• M15: 51,085,578 km (0.105 R)
• M16: 56,221,872 km (0.098 R)
• M17: 61,316,427 km (0.109 R)

Kuiper Belt

Range: 30 - 51 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 529 - 16,920 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit