🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.33 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.65 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.42

Radius: 0.71

Gravity: 0.83 G

Time & Orbit

Eccentricity (e): 0.147

Orbit Range: 0.55 AU - 0.75 AU

Year: 200 Days

Day: 36.8 Hours

Environment

Temp: 177 °C

Axial Tilt: 5.5 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Satellites (1)

Outer Limit: 47,929,424 km

• M1: 19,149 km (0.102 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.66 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.62

Radius: 0.83

Gravity: 0.9 G

Time & Orbit

Eccentricity (e): 0.107

Orbit Range: 0.59 AU - 0.73 AU

Year: 204 Days

Day: 23.8 Hours

Environment

Temp: 97 °C

Axial Tilt: 25.2 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 3 - Terrestrial

Semi-Major Axis: 2.2 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.67

Radius: 1.48

Gravity: 1.22 G

Time & Orbit

Eccentricity (e): 0.224

Orbit Range: 1.71 AU - 2.69 AU

Year: 1243 Days

Day: 42.1 Hours

Environment

Temp: -91 °C

Axial Tilt: 21.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 4 - Terrestrial

Semi-Major Axis: 3.2 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.18

Radius: 1.59

Gravity: 1.26 G

Time & Orbit

Eccentricity (e): 0.159

Orbit Range: 2.69 AU - 3.71 AU

Year: 2180 Days

Day: 31.2 Hours

Environment

Temp: -118 °C

Axial Tilt: 10.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Asteroid Belt

Center: 3.77 AU

Composition

Type: Main (Rocky/Icy Mix)

A dense region of planetesimals and debris.

Boundary

Planet 5 - Gas Giant

Semi-Major Axis: 4.33 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 224.2

Radius: 8.1

Gravity: 3.42 G

Time & Orbit

Eccentricity (e): 0.092

Orbit Range: 3.93 AU - 4.73 AU

Year: 3431 Days

Day: 11 Hours

Environment

Temp: -134 °C

Axial Tilt: 31.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 47,929,424 km

• M1: 108,458 km (0.073 R)
• M2: 268,079 km (0.079 R)
• M3: 448,345 km (0.047 R)
• M4: 639,531 km (0.025 R)
• M5: 951,891 km (0.09 R)
• M6: 1,265,000 km (0.08 R)
• M7: 1,831,676 km (0.072 R)
• M8: 2,965,927 km (0.111 R)
• M9: 3,446,137 km (0.082 R)
• M10: 3,654,676 km (0.04 R)
• M11: 3,807,565 km (0.072 R)
• M12: 4,042,882 km (0.079 R)
• M13: 4,620,031 km (0.096 R)
• M14: 5,146,167 km (0.078 R)
• M15: 6,265,308 km (0.053 R)
• M16: 6,835,576 km (0.113 R)
• M17: 8,958,668 km (0.056 R)
• M18: 10,918,849 km (0.066 R)
• M19: 12,644,910 km (0.109 R)
• M20: 13,600,092 km (0.051 R)
• M21: 14,316,815 km (0.092 R)

Planet 6 - Ice Giant

Semi-Major Axis: 15.82 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 463

Radius: 5.6

Gravity: 14.76 G

Time & Orbit

Eccentricity (e): 0.203

Orbit Range: 12.61 AU - 19.03 AU

Year: 23961 Days

Day: 21.7 Hours

Environment

Temp: -207 °C

Axial Tilt: 17.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (29)

Outer Limit: 47,929,424 km

• M1: 88,861 km (0.114 R)
• M2: 575,653 km (0.042 R)
• M3: 1,226,703 km (0.031 R)
• M4: 2,814,983 km (0.085 R)
• M5: 3,913,331 km (0.075 R)
• M6: 4,586,820 km (0.105 R)
• M7: 5,843,891 km (0.089 R)
• M8: 8,515,111 km (0.076 R)
• M9: 8,820,290 km (0.108 R)
• M10: 13,218,468 km (0.079 R)
• M11: 13,471,288 km (0.037 R)
• M12: 13,790,680 km (0.111 R)
• M13: 17,336,149 km (0.111 R)
• M14: 18,658,146 km (0.105 R)
• M15: 18,808,043 km (0.097 R)
• M16: 19,720,141 km (0.1 R)
• M17: 21,049,468 km (0.077 R)
• M18: 21,448,595 km (0.063 R)
• M19: 23,083,101 km (0.081 R)
• M20: 23,585,301 km (0.094 R)
• M21: 24,177,858 km (0.108 R)
• M22: 24,348,549 km (0.087 R)
• M23: 34,154,540 km (0.034 R)
• M24: 42,062,284 km (0.104 R)
• M25: 44,803,964 km (0.116 R)
• M26: 48,715,350 km (0.085 R)
• M27: 50,794,311 km (0.098 R)
• M28: 54,697,170 km (0.054 R)
• M29: 64,877,605 km (0.082 R)

Planet 7 - Ice Giant

Semi-Major Axis: 17.72 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 870.4

Radius: 5

Gravity: 34.82 G

Time & Orbit

Eccentricity (e): 0.074

Orbit Range: 16.41 AU - 19.03 AU

Year: 28405 Days

Day: 16.8 Hours

Environment

Temp: -200 °C

Axial Tilt: 7.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (38)

Outer Limit: 47,929,424 km

• M1: 155,881 km (0.092 R)
• M2: 282,441 km (0.107 R)
• M3: 796,459 km (0.116 R)
• M4: 2,160,642 km (0.071 R)
• M5: 3,858,578 km (0.091 R)
• M6: 4,183,355 km (0.105 R)
• M7: 4,350,605 km (0.073 R)
• M8: 4,564,530 km (0.1 R)
• M9: 4,962,610 km (0.118 R)
• M10: 5,144,970 km (0.086 R)
• M11: 7,989,573 km (0.109 R)
• M12: 8,814,157 km (0.109 R)
• M13: 9,241,857 km (0.102 R)
• M14: 12,305,472 km (0.047 R)
• M15: 13,549,229 km (0.111 R)
• M16: 14,774,735 km (0.099 R)
• M17: 16,712,775 km (0.061 R)
• M18: 20,948,788 km (0.119 R)
• M19: 23,246,612 km (0.099 R)
• M20: 25,150,693 km (0.079 R)
• M21: 30,859,198 km (0.069 R)
• M22: 31,542,262 km (0.044 R)
• M23: 31,771,745 km (0.055 R)
• M24: 34,708,950 km (0.113 R)
• M25: 34,949,503 km (0.108 R)
• M26: 40,323,956 km (0.089 R)
• M27: 42,954,635 km (0.034 R)
• M28: 45,668,789 km (0.113 R)
• M29: 47,758,971 km (0.114 R)
• M30: 49,035,489 km (0.096 R)
• M31: 49,608,300 km (0.1 R)
• M32: 59,539,953 km (0.072 R)
• M33: 69,016,230 km (0.111 R)
• M34: 84,168,848 km (0.083 R)
• M35: 85,672,457 km (0.119 R)
• M36: 89,104,232 km (0.103 R)
• M37: 95,371,485 km (0.096 R)
• M38: 100,416,075 km (0.095 R)

Planet 8 - Ice Giant

Semi-Major Axis: 18.18 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 78.6

Radius: 7.3

Gravity: 1.47 G

Time & Orbit

Eccentricity (e): 0.155

Orbit Range: 15.36 AU - 21 AU

Year: 29518 Days

Day: 20.3 Hours

Environment

Temp: -212 °C

Axial Tilt: 44 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 47,929,424 km

• M1: 1,041,800 km (0.064 R)
• M2: 1,985,313 km (0.041 R)
• M3: 4,031,214 km (0.118 R)
• M4: 4,688,098 km (0.107 R)
• M5: 11,765,125 km (0.032 R)
• M6: 15,633,576 km (0.108 R)
• M7: 18,243,460 km (0.118 R)
• M8: 19,198,643 km (0.114 R)
• M9: 21,055,751 km (0.093 R)
• M10: 25,097,436 km (0.066 R)
• M11: 25,235,964 km (0.111 R)
• M12: 30,174,040 km (0.113 R)
• M13: 31,944,381 km (0.107 R)
• M14: 32,100,711 km (0.105 R)
• M15: 37,728,733 km (0.026 R)
• M16: 46,505,041 km (0.107 R)

Kuiper Belt

Range: 30 - 59 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 321 - 11,979 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit