🌌 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: 0.62 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.63

Radius: 0.83

Gravity: 0.91 G

Time & Orbit

Eccentricity (e): 0.175

Orbit Range: 0.51 AU - 0.73 AU

Year: 315 Days

Day: 40 Hours

Environment

Temp: -137 °C

Axial Tilt: 1.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 66,461,601 km

• M1: 19,448 km (0.118 R)
• M2: 374,443 km (0.076 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.9 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 307.5

Radius: 9

Gravity: 3.8 G

Time & Orbit

Eccentricity (e): 0.063

Orbit Range: 0.84 AU - 0.96 AU

Year: 551 Days

Day: 7.9 Hours

Environment

Temp: -148 °C

Axial Tilt: 29.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 66,461,601 km

• M1: 111,899 km (0.087 R)
• M2: 399,726 km (0.103 R)
• M3: 724,203 km (0.037 R)
• M4: 1,070,672 km (0.12 R)
• M5: 1,457,083 km (0.037 R)
• M6: 1,777,372 km (0.109 R)
• M7: 2,087,040 km (0.119 R)
• M8: 2,867,492 km (0.066 R)
• M9: 3,174,616 km (0.11 R)
• M10: 3,598,427 km (0.111 R)
• M11: 4,151,191 km (0.111 R)
• M12: 4,462,205 km (0.113 R)
• M13: 5,040,251 km (0.101 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.97 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 380

Radius: 8.2

Gravity: 5.65 G

Time & Orbit

Eccentricity (e): 0.052

Orbit Range: 0.92 AU - 1.02 AU

Year: 617 Days

Day: 5.5 Hours

Environment

Temp: -160 °C

Axial Tilt: 23.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 66,461,601 km

• M1: 102,026 km (0.092 R)
• M2: 379,380 km (0.102 R)
• M3: 741,856 km (0.099 R)
• M4: 1,192,594 km (0.113 R)
• M5: 1,481,169 km (0.101 R)
• M6: 1,739,674 km (0.086 R)
• M7: 2,003,265 km (0.056 R)
• M8: 2,387,283 km (0.083 R)
• M9: 3,448,081 km (0.102 R)
• M10: 4,180,662 km (0.096 R)
• M11: 4,887,662 km (0.1 R)
• M12: 5,385,075 km (0.118 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.22 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 742.9

Radius: 13.8

Gravity: 3.9 G

Time & Orbit

Eccentricity (e): 0.051

Orbit Range: 1.16 AU - 1.28 AU

Year: 870 Days

Day: 11.4 Hours

Environment

Temp: -164 °C

Axial Tilt: 34.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 66,461,601 km

• M1: 175,927 km (0.101 R)
• M2: 726,447 km (0.117 R)
• M3: 1,228,647 km (0.106 R)
• M4: 2,142,242 km (0.065 R)
• M5: 2,756,042 km (0.037 R)
• M6: 3,687,288 km (0.071 R)
• M7: 4,341,031 km (0.076 R)
• M8: 5,126,420 km (0.063 R)
• M9: 6,212,949 km (0.111 R)
• M10: 8,289,368 km (0.102 R)
• M11: 8,733,524 km (0.071 R)
• M12: 9,415,690 km (0.053 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.24 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 526.1

Radius: 15

Gravity: 2.34 G

Time & Orbit

Eccentricity (e): 0.25

Orbit Range: 0.93 AU - 1.55 AU

Year: 892 Days

Day: 8.4 Hours

Environment

Temp: -171 °C

Axial Tilt: 35.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 66,461,601 km

• M1: 186,549 km (0.114 R)
• M2: 727,046 km (0.033 R)
• M3: 1,226,403 km (0.055 R)
• M4: 2,200,435 km (0.076 R)
• M5: 2,811,692 km (0.058 R)
• M6: 3,675,021 km (0.113 R)
• M7: 4,397,729 km (0.117 R)
• M8: 4,896,638 km (0.115 R)
• M9: 6,395,309 km (0.053 R)

Planet 6 - Ice Giant

Semi-Major Axis: 7.33 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 963.8

Radius: 7.9

Gravity: 15.44 G

Time & Orbit

Eccentricity (e): 0.049

Orbit Range: 6.97 AU - 7.69 AU

Year: 12814 Days

Day: 20.2 Hours

Environment

Temp: -221 °C

Axial Tilt: 34.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (31)

Outer Limit: 66,461,601 km

• M1: 102,325 km (0.082 R)
• M2: 367,263 km (0.11 R)
• M3: 709,692 km (0.113 R)
• M4: 1,075,010 km (0.091 R)
• M5: 1,517,072 km (0.112 R)
• M6: 1,823,598 km (0.113 R)
• M7: 2,094,520 km (0.12 R)
• M8: 2,498,135 km (0.077 R)
• M9: 2,976,848 km (0.03 R)
• M10: 6,708,717 km (0.118 R)
• M11: 7,007,912 km (0.049 R)
• M12: 7,360,664 km (0.032 R)
• M13: 8,101,772 km (0.035 R)
• M14: 8,993,974 km (0.056 R)
• M15: 10,171,458 km (0.119 R)
• M16: 11,876,425 km (0.107 R)
• M17: 12,125,805 km (0.109 R)
• M18: 22,933,802 km (0.058 R)
• M19: 24,709,978 km (0.098 R)
• M20: 25,424,757 km (0.064 R)
• M21: 26,469,698 km (0.113 R)
• M22: 27,217,986 km (0.109 R)
• M23: 37,329,306 km (0.066 R)
• M24: 40,620,609 km (0.119 R)
• M25: 42,481,756 km (0.056 R)
• M26: 43,951,555 km (0.027 R)
• M27: 45,759,745 km (0.085 R)
• M28: 55,549,130 km (0.113 R)
• M29: 59,643,923 km (0.118 R)
• M30: 61,671,722 km (0.05 R)
• M31: 62,045,268 km (0.075 R)

Planet 7 - Ice Giant

Semi-Major Axis: 8.89 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 623.4

Radius: 4.6

Gravity: 29.46 G

Time & Orbit

Eccentricity (e): 0.153

Orbit Range: 7.53 AU - 10.25 AU

Year: 17115 Days

Day: 16.1 Hours

Environment

Temp: -237 °C

Axial Tilt: 11.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 66,461,601 km

• M1: 57,296 km (0.078 R)
• M2: 231,727 km (0.084 R)
• M3: 549,623 km (0.044 R)
• M4: 834,008 km (0.107 R)
• M5: 1,796,820 km (0.08 R)
• M6: 2,152,564 km (0.085 R)
• M7: 2,400,447 km (0.062 R)
• M8: 11,409,231 km (0.079 R)
• M9: 14,400,590 km (0.055 R)
• M10: 18,042,102 km (0.084 R)
• M11: 25,572,410 km (0.119 R)
• M12: 27,075,120 km (0.119 R)
• M13: 28,977,556 km (0.111 R)
• M14: 37,480,101 km (0.106 R)
• M15: 37,752,519 km (0.063 R)
• M16: 43,184,268 km (0.092 R)
• M17: 52,783,814 km (0.049 R)
• M18: 53,988,675 km (0.083 R)
• M19: 64,489,398 km (0.095 R)

Kuiper Belt

Range: 30 - 54 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 229 - 19,237 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit