🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.38 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.76 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.3

Radius: 0.62

Gravity: 0.78 G

Time & Orbit

Eccentricity (e): 0.192

Orbit Range: 0.61 AU - 0.91 AU

Year: 242 Days

Day: 28.3 Hours

Environment

Temp: 115 °C

Axial Tilt: 0.7 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 0.8 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.73

Radius: 1.25

Gravity: 1.11 G

Time & Orbit

Eccentricity (e): 0.065

Orbit Range: 0.75 AU - 0.85 AU

Year: 261 Days

Day: 18.2 Hours

Environment

Temp: 128 °C

Axial Tilt: 10.2 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 3 - Terrestrial

Semi-Major Axis: 0.89 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.91

Radius: 1.73

Gravity: 1.31 G

Time & Orbit

Eccentricity (e): 0.159

Orbit Range: 0.75 AU - 1.03 AU

Year: 307 Days

Day: 23.4 Hours

Environment

Temp: 113 °C

Axial Tilt: 23.4 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 4 - Terrestrial

Semi-Major Axis: 1 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.56

Radius: 1.19

Gravity: 1.1 G

Time & Orbit

Eccentricity (e): 0.034

Orbit Range: 0.97 AU - 1.03 AU

Year: 365 Days

Day: 13.1 Hours

Environment

Temp: 18 °C

Axial Tilt: 14.8 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Planet 5 - Terrestrial

Semi-Major Axis: 1.51 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.19

Radius: 1.07

Gravity: 1.04 G

Time & Orbit

Eccentricity (e): 0.142

Orbit Range: 1.3 AU - 1.72 AU

Year: 678 Days

Day: 13.6 Hours

Environment

Temp: -33 °C

Axial Tilt: 17.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 6 - Terrestrial

Semi-Major Axis: 1.77 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.06

Radius: 1.75

Gravity: 1.33 G

Time & Orbit

Eccentricity (e): 0.049

Orbit Range: 1.68 AU - 1.86 AU

Year: 860 Days

Day: 40.2 Hours

Environment

Temp: -46 °C

Axial Tilt: 22.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 7 - Gas Giant

Semi-Major Axis: 5.38 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 572.4

Radius: 12.1

Gravity: 3.91 G

Time & Orbit

Eccentricity (e): 0.194

Orbit Range: 4.34 AU - 6.42 AU

Year: 4558 Days

Day: 12.2 Hours

Environment

Temp: -140 °C

Axial Tilt: 11.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 60,949,271 km

• M1: 150,495 km (0.12 R)
• M2: 673,789 km (0.077 R)
• M3: 1,310,178 km (0.105 R)
• M4: 2,279,273 km (0.091 R)
• M5: 4,671,343 km (0.082 R)
• M6: 5,951,153 km (0.047 R)
• M7: 7,934,372 km (0.086 R)
• M8: 12,241,743 km (0.044 R)
• M9: 14,703,526 km (0.042 R)
• M10: 17,598,843 km (0.059 R)
• M11: 19,404,639 km (0.058 R)
• M12: 20,922,309 km (0.096 R)
• M13: 25,637,933 km (0.108 R)
• M14: 26,421,228 km (0.117 R)

Planet 8 - Gas Giant

Semi-Major Axis: 9.29 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 508.4

Radius: 9.3

Gravity: 5.88 G

Time & Orbit

Eccentricity (e): 0.06

Orbit Range: 8.73 AU - 9.85 AU

Year: 10342 Days

Day: 14.2 Hours

Environment

Temp: -176 °C

Axial Tilt: 2.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (30)

Outer Limit: 60,949,271 km

• M1: 116,836 km (0.112 R)
• M2: 568,023 km (0.093 R)
• M3: 1,322,894 km (0.099 R)
• M4: 1,933,403 km (0.053 R)
• M5: 2,357,962 km (0.08 R)
• M6: 4,537,752 km (0.094 R)
• M7: 5,715,686 km (0.086 R)
• M8: 6,818,521 km (0.116 R)
• M9: 7,889,642 km (0.069 R)
• M10: 8,400,220 km (0.102 R)
• M11: 11,557,632 km (0.12 R)
• M12: 16,026,420 km (0.102 R)
• M13: 16,638,275 km (0.03 R)
• M14: 17,265,689 km (0.091 R)
• M15: 17,908,660 km (0.049 R)
• M16: 18,940,586 km (0.102 R)
• M17: 19,547,804 km (0.111 R)
• M18: 19,856,275 km (0.066 R)
• M19: 20,641,664 km (0.09 R)
• M20: 20,961,504 km (0.069 R)
• M21: 22,442,074 km (0.103 R)
• M22: 23,380,651 km (0.112 R)
• M23: 25,610,407 km (0.116 R)
• M24: 30,179,725 km (0.094 R)
• M25: 31,957,995 km (0.114 R)
• M26: 32,927,239 km (0.043 R)
• M27: 35,151,012 km (0.069 R)
• M28: 40,143,392 km (0.079 R)
• M29: 41,907,151 km (0.12 R)
• M30: 44,250,153 km (0.091 R)

Planet 9 - Gas Giant

Semi-Major Axis: 9.56 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 430.5

Radius: 9.4

Gravity: 4.87 G

Time & Orbit

Eccentricity (e): 0.074

Orbit Range: 8.85 AU - 10.27 AU

Year: 10796 Days

Day: 12.8 Hours

Environment

Temp: -167 °C

Axial Tilt: 33.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 60,949,271 km

• M1: 131,646 km (0.117 R)
• M2: 557,252 km (0.083 R)
• M3: 2,264,463 km (0.029 R)
• M4: 2,979,541 km (0.084 R)
• M5: 3,424,894 km (0.111 R)
• M6: 3,787,668 km (0.083 R)
• M7: 5,699,679 km (0.111 R)
• M8: 8,438,068 km (0.033 R)
• M9: 9,239,912 km (0.106 R)
• M10: 11,626,447 km (0.072 R)
• M11: 12,449,684 km (0.096 R)
• M12: 18,369,422 km (0.115 R)
• M13: 19,258,332 km (0.048 R)
• M14: 20,962,402 km (0.093 R)
• M15: 22,015,271 km (0.032 R)
• M16: 24,402,105 km (0.106 R)
• M17: 36,946,785 km (0.04 R)

Planet 10 - Ice Giant

Semi-Major Axis: 13.43 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 435.8

Radius: 3.8

Gravity: 30.18 G

Time & Orbit

Eccentricity (e): 0.115

Orbit Range: 11.89 AU - 14.97 AU

Year: 17976 Days

Day: 23.2 Hours

Environment

Temp: -182 °C

Axial Tilt: 0.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (37)

Outer Limit: 60,949,271 km

• M1: 64,028 km (0.116 R)
• M2: 190,588 km (0.048 R)
• M3: 330,910 km (0.118 R)
• M4: 603,179 km (0.103 R)
• M5: 847,771 km (0.086 R)
• M6: 1,246,001 km (0.086 R)
• M7: 1,741,469 km (0.077 R)
• M8: 2,440,988 km (0.075 R)
• M9: 2,680,943 km (0.111 R)
• M10: 4,063,078 km (0.084 R)
• M11: 4,755,567 km (0.118 R)
• M12: 5,860,048 km (0.1 R)
• M13: 6,013,984 km (0.081 R)
• M14: 7,124,898 km (0.117 R)
• M15: 8,126,007 km (0.106 R)
• M16: 8,414,431 km (0.059 R)
• M17: 8,610,554 km (0.118 R)
• M18: 10,235,187 km (0.119 R)
• M19: 10,973,453 km (0.103 R)
• M20: 12,177,566 km (0.026 R)
• M21: 13,600,690 km (0.107 R)
• M22: 14,561,857 km (0.072 R)
• M23: 17,397,634 km (0.074 R)
• M24: 19,366,192 km (0.084 R)
• M25: 20,141,259 km (0.104 R)
• M26: 22,401,982 km (0.085 R)
• M27: 25,229,830 km (0.076 R)
• M28: 28,396,219 km (0.098 R)
• M29: 28,948,385 km (0.1 R)
• M30: 37,713,324 km (0.035 R)
• M31: 39,463,918 km (0.093 R)
• M32: 39,737,982 km (0.109 R)
• M33: 40,428,675 km (0.105 R)
• M34: 50,470,282 km (0.111 R)
• M35: 52,759,429 km (0.085 R)
• M36: 57,367,791 km (0.115 R)
• M37: 58,604,816 km (0.029 R)

Kuiper Belt

Range: 30 - 55 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 511 - 16,944 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit