🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.29 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.57 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.63

Radius: 1.67

Gravity: 1.3 G

Time & Orbit

Eccentricity (e): 0.159

Orbit Range: 0.48 AU - 0.66 AU

Year: 282 Days

Day: 32.6 Hours

Environment

Temp: -131 °C

Axial Tilt: 35.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 58,755,084 km

• M1: 42,187 km (0.06 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.64 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.88

Radius: 1.89

Gravity: 1.37 G

Time & Orbit

Eccentricity (e): 0.059

Orbit Range: 0.6 AU - 0.68 AU

Year: 336 Days

Day: 20.5 Hours

Environment

Temp: -140 °C

Axial Tilt: 49.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 58,755,084 km

• M1: 44,131 km (0.114 R)
• M2: 824,583 km (0.111 R)

Planet 3 - Terrestrial

Semi-Major Axis: 0.67 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.25

Radius: 1.6

Gravity: 1.27 G

Time & Orbit

Eccentricity (e): 0.2

Orbit Range: 0.54 AU - 0.8 AU

Year: 360 Days

Day: 38.4 Hours

Environment

Temp: -137 °C

Axial Tilt: 4.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 4 - Gas Giant

Semi-Major Axis: 0.74 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 206.7

Radius: 8.9

Gravity: 2.61 G

Time & Orbit

Eccentricity (e): 0.027

Orbit Range: 0.72 AU - 0.76 AU

Year: 418 Days

Day: 9.9 Hours

Environment

Temp: -142 °C

Axial Tilt: 7.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 58,755,084 km

• M1: 129,552 km (0.081 R)
• M2: 471,832 km (0.095 R)
• M3: 985,102 km (0.071 R)
• M4: 1,271,881 km (0.104 R)
• M5: 1,833,472 km (0.094 R)
• M6: 2,123,243 km (0.052 R)
• M7: 2,689,919 km (0.075 R)
• M8: 3,446,885 km (0.067 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.13 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 762.4

Radius: 10.4

Gravity: 7.05 G

Time & Orbit

Eccentricity (e): 0.098

Orbit Range: 1.02 AU - 1.24 AU

Year: 788 Days

Day: 6.3 Hours

Environment

Temp: -157 °C

Axial Tilt: 35.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 58,755,084 km

• M1: 129,851 km (0.074 R)
• M2: 470,784 km (0.118 R)
• M3: 820,245 km (0.092 R)
• M4: 1,344,436 km (0.072 R)
• M5: 1,822,700 km (0.059 R)
• M6: 4,668,950 km (0.082 R)
• M7: 5,019,906 km (0.071 R)
• M8: 5,854,363 km (0.117 R)
• M9: 6,347,288 km (0.087 R)
• M10: 6,912,170 km (0.049 R)
• M11: 7,629,192 km (0.069 R)
• M12: 7,968,929 km (0.09 R)
• M13: 8,369,702 km (0.111 R)
• M14: 8,757,459 km (0.081 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.21 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 336.6

Radius: 10.1

Gravity: 3.3 G

Time & Orbit

Eccentricity (e): 0.193

Orbit Range: 0.98 AU - 1.44 AU

Year: 873 Days

Day: 11.5 Hours

Environment

Temp: -160 °C

Axial Tilt: 3.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 58,755,084 km

• M1: 126,410 km (0.084 R)
• M2: 594,053 km (0.098 R)
• M3: 914,941 km (0.092 R)
• M4: 1,363,285 km (0.108 R)
• M5: 1,912,459 km (0.046 R)
• M6: 3,043,569 km (0.1 R)
• M7: 4,371,250 km (0.098 R)
• M8: 4,862,529 km (0.058 R)
• M9: 5,677,389 km (0.094 R)
• M10: 6,050,635 km (0.109 R)
• M11: 6,950,915 km (0.047 R)

Planet 7 - Gas Giant

Semi-Major Axis: 2.8 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 121.7

Radius: 11.2

Gravity: 0.97 G

Time & Orbit

Eccentricity (e): 0.163

Orbit Range: 2.34 AU - 3.26 AU

Year: 3074 Days

Day: 11.8 Hours

Environment

Temp: -191 °C

Axial Tilt: 23.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 58,755,084 km

• M1: 139,276 km (0.077 R)
• M2: 650,601 km (0.085 R)
• M3: 1,031,777 km (0.108 R)
• M4: 1,875,060 km (0.049 R)
• M5: 3,627,449 km (0.109 R)
• M6: 4,073,400 km (0.081 R)
• M7: 4,611,654 km (0.085 R)
• M8: 6,281,764 km (0.107 R)
• M9: 7,001,928 km (0.025 R)
• M10: 8,954,929 km (0.112 R)
• M11: 11,769,912 km (0.113 R)

Planet 8 - Gas Giant

Semi-Major Axis: 5.07 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 524.8

Radius: 9.3

Gravity: 6.07 G

Time & Orbit

Eccentricity (e): 0.156

Orbit Range: 4.28 AU - 5.86 AU

Year: 7489 Days

Day: 9.9 Hours

Environment

Temp: -217 °C

Axial Tilt: 172.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (27)

Outer Limit: 58,755,084 km

• M1: 140,173 km (0.065 R)
• M2: 537,356 km (0.105 R)
• M3: 1,069,774 km (0.093 R)
• M4: 2,902,947 km (0.066 R)
• M5: 3,467,230 km (0.099 R)
• M6: 3,858,877 km (0.038 R)
• M7: 4,954,831 km (0.108 R)
• M8: 6,016,527 km (0.101 R)
• M9: 6,515,436 km (0.112 R)
• M10: 9,088,071 km (0.074 R)
• M11: 9,434,839 km (0.116 R)
• M12: 9,971,446 km (0.094 R)
• M13: 11,959,901 km (0.063 R)
• M14: 12,271,513 km (0.073 R)
• M15: 13,129,308 km (0.026 R)
• M16: 13,572,865 km (0.112 R)
• M17: 16,639,921 km (0.068 R)
• M18: 17,357,243 km (0.119 R)
• M19: 17,757,267 km (0.106 R)
• M20: 20,955,371 km (0.119 R)
• M21: 21,485,246 km (0.058 R)
• M22: 22,335,710 km (0.097 R)
• M23: 23,289,097 km (0.084 R)
• M24: 24,685,743 km (0.053 R)
• M25: 29,871,104 km (0.054 R)
• M26: 32,114,025 km (0.112 R)
• M27: 35,631,969 km (0.111 R)

Planet 9 - Ice Giant

Semi-Major Axis: 7.21 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 842.1

Radius: 6.4

Gravity: 20.56 G

Time & Orbit

Eccentricity (e): 0.226

Orbit Range: 5.58 AU - 8.84 AU

Year: 12700 Days

Day: 15.2 Hours

Environment

Temp: -234 °C

Axial Tilt: 22.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 58,755,084 km

• M1: 79,736 km (0.07 R)
• M2: 582,684 km (0.111 R)
• M3: 1,076,805 km (0.07 R)
• M4: 3,538,289 km (0.114 R)
• M5: 4,961,862 km (0.064 R)
• M6: 6,403,537 km (0.045 R)
• M7: 7,642,207 km (0.082 R)
• M8: 9,655,047 km (0.12 R)
• M9: 10,697,744 km (0.07 R)
• M10: 11,041,968 km (0.092 R)
• M11: 22,997,381 km (0.043 R)
• M12: 29,171,136 km (0.07 R)
• M13: 38,331,612 km (0.099 R)
• M14: 39,002,558 km (0.12 R)
• M15: 42,475,922 km (0.095 R)
• M16: 44,508,358 km (0.116 R)
• M17: 44,952,066 km (0.111 R)
• M18: 48,765,764 km (0.1 R)

Planet 10 - Ice Giant

Semi-Major Axis: 7.75 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 629.8

Radius: 7.5

Gravity: 11.2 G

Time & Orbit

Eccentricity (e): 0.064

Orbit Range: 7.25 AU - 8.25 AU

Year: 14153 Days

Day: 16.1 Hours

Environment

Temp: -216 °C

Axial Tilt: 31.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (32)

Outer Limit: 58,755,084 km

• M1: 93,349 km (0.104 R)
• M2: 613,650 km (0.088 R)
• M3: 914,342 km (0.11 R)
• M4: 1,494,632 km (0.092 R)
• M5: 2,762,325 km (0.1 R)
• M6: 3,546,367 km (0.109 R)
• M7: 5,262,554 km (0.082 R)
• M8: 5,692,199 km (0.039 R)
• M9: 6,380,200 km (0.054 R)
• M10: 6,994,748 km (0.071 R)
• M11: 8,630,451 km (0.066 R)
• M12: 9,279,107 km (0.088 R)
• M13: 11,777,392 km (0.106 R)
• M14: 12,955,176 km (0.08 R)
• M15: 18,619,849 km (0.115 R)
• M16: 18,865,787 km (0.091 R)
• M17: 19,786,114 km (0.087 R)
• M18: 20,214,263 km (0.071 R)
• M19: 25,139,324 km (0.072 R)
• M20: 28,906,198 km (0.111 R)
• M21: 29,568,468 km (0.089 R)
• M22: 31,500,076 km (0.118 R)
• M23: 33,393,386 km (0.107 R)
• M24: 33,878,383 km (0.095 R)
• M25: 41,727,484 km (0.055 R)
• M26: 44,884,597 km (0.087 R)
• M27: 46,071,058 km (0.102 R)
• M28: 47,430,753 km (0.111 R)
• M29: 52,644,987 km (0.108 R)
• M30: 54,130,643 km (0.107 R)
• M31: 55,643,975 km (0.111 R)
• M32: 58,053,997 km (0.114 R)

Kuiper Belt

Range: 30 - 48 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 437 - 19,826 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit