🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.37 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.73 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.51

Radius: 0.76

Gravity: 0.88 G

Time & Orbit

Eccentricity (e): 0.151

Orbit Range: 0.62 AU - 0.84 AU

Year: 227 Days

Day: 30.5 Hours

Environment

Temp: 172 °C

Axial Tilt: 29.3 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Satellites (1)

Outer Limit: 66,996,532 km

• M1: 261,647 km (0.116 R)

Planet 2 - Terrestrial

Semi-Major Axis: 1.3 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.53

Radius: 1.45

Gravity: 1.2 G

Time & Orbit

Eccentricity (e): 0.136

Orbit Range: 1.12 AU - 1.48 AU

Year: 539 Days

Day: 29 Hours

Environment

Temp: -4 °C

Axial Tilt: 173.6 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Planet 3 - Terrestrial

Semi-Major Axis: 1.66 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.73

Radius: 1.49

Gravity: 1.23 G

Time & Orbit

Eccentricity (e): 0.151

Orbit Range: 1.41 AU - 1.91 AU

Year: 777 Days

Day: 42 Hours

Environment

Temp: -52 °C

Axial Tilt: 7.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 4 - Terrestrial

Semi-Major Axis: 2.7 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.19

Radius: 0.51

Gravity: 0.73 G

Time & Orbit

Eccentricity (e): 0.136

Orbit Range: 2.33 AU - 3.07 AU

Year: 1612 Days

Day: 30.1 Hours

Environment

Temp: -92 °C

Axial Tilt: 42.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 66,996,532 km

• M1: 617,989 km (0.067 R)

Planet 5 - Terrestrial

Semi-Major Axis: 3.7 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.79

Radius: 1.51

Gravity: 1.22 G

Time & Orbit

Eccentricity (e): 0.066

Orbit Range: 3.46 AU - 3.94 AU

Year: 2587 Days

Day: 41.6 Hours

Environment

Temp: -119 °C

Axial Tilt: 34.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 66,996,532 km

• M1: 1,352,215 km (0.115 R)

Asteroid Belt

Center: 4.63 AU

Composition

Type: Main (Rocky/Icy Mix)

A dense region of planetesimals and debris.

Boundary

Planet 6 - Gas Giant

Semi-Major Axis: 5.56 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 309.6

Radius: 14.2

Gravity: 1.54 G

Time & Orbit

Eccentricity (e): 0.176

Orbit Range: 4.58 AU - 6.54 AU

Year: 4765 Days

Day: 14.2 Hours

Environment

Temp: -144 °C

Axial Tilt: 28.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 66,996,532 km

• M1: 177,124 km (0.12 R)
• M2: 736,620 km (0.077 R)
• M3: 1,427,463 km (0.104 R)
• M4: 2,191,908 km (0.08 R)
• M5: 3,398,265 km (0.082 R)
• M6: 4,542,988 km (0.03 R)
• M7: 5,082,438 km (0.113 R)
• M8: 6,347,438 km (0.091 R)
• M9: 7,490,515 km (0.062 R)
• M10: 8,246,433 km (0.042 R)
• M11: 9,911,308 km (0.115 R)
• M12: 10,946,375 km (0.049 R)
• M13: 12,317,889 km (0.12 R)
• M14: 15,142,895 km (0.088 R)
• M15: 16,298,987 km (0.074 R)
• M16: 16,843,673 km (0.057 R)
• M17: 17,797,359 km (0.103 R)
• M18: 18,375,106 km (0.068 R)
• M19: 19,997,645 km (0.119 R)
• M20: 22,174,294 km (0.04 R)

Planet 7 - Gas Giant

Semi-Major Axis: 12.3 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 136.7

Radius: 13.7

Gravity: 0.73 G

Time & Orbit

Eccentricity (e): 0.084

Orbit Range: 11.27 AU - 13.33 AU

Year: 15678 Days

Day: 5.6 Hours

Environment

Temp: -175 °C

Axial Tilt: 87.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 66,996,532 km

• M1: 174,581 km (0.064 R)
• M2: 634,295 km (0.087 R)
• M3: 1,346,530 km (0.096 R)
• M4: 1,783,805 km (0.117 R)
• M5: 2,301,264 km (0.1 R)
• M6: 2,763,970 km (0.101 R)
• M7: 3,332,442 km (0.103 R)
• M8: 3,929,637 km (0.098 R)
• M9: 5,133,002 km (0.103 R)
• M10: 6,363,295 km (0.027 R)
• M11: 7,743,036 km (0.067 R)
• M12: 8,796,355 km (0.106 R)
• M13: 16,237,652 km (0.045 R)
• M14: 17,283,790 km (0.103 R)
• M15: 20,617,279 km (0.109 R)
• M16: 22,315,963 km (0.038 R)
• M17: 24,610,795 km (0.11 R)
• M18: 25,640,925 km (0.119 R)
• M19: 27,058,964 km (0.032 R)
• M20: 36,573,987 km (0.026 R)
• M21: 37,464,543 km (0.114 R)

Planet 8 - Ice Giant

Semi-Major Axis: 12.9 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 378.9

Radius: 4.3

Gravity: 20.49 G

Time & Orbit

Eccentricity (e): 0.206

Orbit Range: 10.24 AU - 15.56 AU

Year: 16839 Days

Day: 16 Hours

Environment

Temp: -186 °C

Axial Tilt: 37.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 66,996,532 km

• M1: 57,894 km (0.107 R)
• M2: 199,713 km (0.045 R)
• M3: 405,709 km (0.1 R)
• M4: 622,028 km (0.107 R)
• M5: 841,937 km (0.097 R)
• M6: 4,234,667 km (0.109 R)
• M7: 5,866,929 km (0.074 R)
• M8: 7,134,173 km (0.063 R)
• M9: 8,573,304 km (0.116 R)
• M10: 8,961,212 km (0.11 R)
• M11: 12,806,775 km (0.093 R)
• M12: 13,965,560 km (0.12 R)
• M13: 16,195,017 km (0.084 R)
• M14: 19,632,177 km (0.115 R)
• M15: 29,294,405 km (0.079 R)
• M16: 34,222,009 km (0.104 R)
• M17: 37,326,464 km (0.112 R)
• M18: 42,257,659 km (0.103 R)
• M19: 43,236,926 km (0.094 R)
• M20: 43,803,154 km (0.108 R)
• M21: 48,971,312 km (0.06 R)
• M22: 49,278,287 km (0.05 R)
• M23: 49,896,126 km (0.11 R)
• M24: 55,026,286 km (0.093 R)

Planet 9 - Ice Giant

Semi-Major Axis: 16.71 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 303.5

Radius: 4.8

Gravity: 13.17 G

Time & Orbit

Eccentricity (e): 0.127

Orbit Range: 14.59 AU - 18.83 AU

Year: 24825 Days

Day: 19.5 Hours

Environment

Temp: -204 °C

Axial Tilt: 7.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (28)

Outer Limit: 66,996,532 km

• M1: 108,458 km (0.07 R)
• M2: 259,552 km (0.094 R)
• M3: 437,275 km (0.103 R)
• M4: 762,800 km (0.062 R)
• M5: 1,277,416 km (0.077 R)
• M6: 1,885,083 km (0.093 R)
• M7: 2,929,575 km (0.099 R)
• M8: 5,998,127 km (0.096 R)
• M9: 7,602,115 km (0.033 R)
• M10: 7,886,650 km (0.105 R)
• M11: 10,367,282 km (0.119 R)
• M12: 11,502,879 km (0.063 R)
• M13: 13,947,458 km (0.069 R)
• M14: 14,735,989 km (0.112 R)
• M15: 17,524,643 km (0.085 R)
• M16: 20,282,031 km (0.106 R)
• M17: 21,106,764 km (0.108 R)
• M18: 22,240,865 km (0.094 R)
• M19: 25,779,603 km (0.11 R)
• M20: 30,857,254 km (0.069 R)
• M21: 34,203,010 km (0.065 R)
• M22: 35,238,826 km (0.116 R)
• M23: 36,831,594 km (0.104 R)
• M24: 45,364,956 km (0.086 R)
• M25: 45,830,953 km (0.111 R)
• M26: 47,887,176 km (0.092 R)
• M27: 48,370,377 km (0.119 R)
• M28: 62,291,805 km (0.116 R)

Kuiper Belt

Range: 30.2 - 49.2 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 168 - 13,209 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit