🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.28 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.55 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.31

Radius: 1.61

Gravity: 1.28 G

Time & Orbit

Eccentricity (e): 0.045

Orbit Range: 0.53 AU - 0.57 AU

Year: 263 Days

Day: 23.3 Hours

Environment

Temp: -122 °C

Axial Tilt: 4.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.63 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.55

Radius: 1.83

Gravity: 1.36 G

Time & Orbit

Eccentricity (e): 0.048

Orbit Range: 0.6 AU - 0.66 AU

Year: 323 Days

Day: 25 Hours

Environment

Temp: -141 °C

Axial Tilt: 22.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.99 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 58.6

Radius: 14.2

Gravity: 0.29 G

Time & Orbit

Eccentricity (e): 0.194

Orbit Range: 0.8 AU - 1.18 AU

Year: 636 Days

Day: 5.1 Hours

Environment

Temp: -158 °C

Axial Tilt: 135.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (3)

Outer Limit: 42,922,299 km

• M1: 177,124 km (0.091 R)
• M2: 782,846 km (0.079 R)
• M3: 2,799,724 km (0.118 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.68 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 879.4

Radius: 8.3

Gravity: 12.77 G

Time & Orbit

Eccentricity (e): 0.088

Orbit Range: 1.53 AU - 1.83 AU

Year: 1406 Days

Day: 12.6 Hours

Environment

Temp: -172 °C

Axial Tilt: 33.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 42,922,299 km

• M1: 105,466 km (0.107 R)
• M2: 369,357 km (0.114 R)
• M3: 755,619 km (0.116 R)
• M4: 1,286,242 km (0.114 R)
• M5: 1,830,180 km (0.103 R)
• M6: 2,244,417 km (0.095 R)
• M7: 2,888,286 km (0.033 R)
• M8: 3,245,975 km (0.108 R)
• M9: 3,734,412 km (0.104 R)
• M10: 4,086,715 km (0.072 R)
• M11: 4,577,844 km (0.12 R)
• M12: 5,128,963 km (0.084 R)
• M13: 5,520,461 km (0.12 R)
• M14: 6,314,227 km (0.052 R)
• M15: 6,867,141 km (0.111 R)
• M16: 8,479,955 km (0.09 R)
• M17: 9,310,822 km (0.119 R)
• M18: 9,632,009 km (0.1 R)
• M19: 11,277,884 km (0.093 R)
• M20: 12,512,964 km (0.11 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.71 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 212.3

Radius: 10

Gravity: 2.12 G

Time & Orbit

Eccentricity (e): 0.21

Orbit Range: 1.35 AU - 2.07 AU

Year: 1444 Days

Day: 10.6 Hours

Environment

Temp: -187 °C

Axial Tilt: 49.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 42,922,299 km

• M1: 124,765 km (0.063 R)
• M2: 461,210 km (0.09 R)
• M3: 1,055,862 km (0.08 R)
• M4: 1,589,029 km (0.11 R)
• M5: 2,252,944 km (0.107 R)
• M6: 3,041,474 km (0.115 R)
• M7: 3,634,031 km (0.083 R)
• M8: 4,019,246 km (0.085 R)
• M9: 4,597,741 km (0.12 R)
• M10: 5,360,690 km (0.11 R)
• M11: 6,541,765 km (0.088 R)
• M12: 7,671,828 km (0.11 R)
• M13: 8,010,517 km (0.11 R)
• M14: 8,640,175 km (0.095 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.97 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 329.1

Radius: 8.2

Gravity: 4.89 G

Time & Orbit

Eccentricity (e): 0.033

Orbit Range: 1.9 AU - 2.04 AU

Year: 1785 Days

Day: 7.4 Hours

Environment

Temp: -185 °C

Axial Tilt: 39.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 42,922,299 km

• M1: 102,026 km (0.109 R)
• M2: 488,736 km (0.106 R)
• M3: 744,399 km (0.11 R)
• M4: 1,258,118 km (0.119 R)
• M5: 1,819,409 km (0.114 R)
• M6: 2,163,335 km (0.079 R)
• M7: 2,452,507 km (0.083 R)
• M8: 3,123,604 km (0.068 R)
• M9: 3,510,164 km (0.093 R)
• M10: 4,343,574 km (0.05 R)
• M11: 4,787,730 km (0.081 R)
• M12: 5,680,680 km (0.117 R)
• M13: 6,121,395 km (0.034 R)
• M14: 6,632,571 km (0.106 R)
• M15: 7,171,722 km (0.114 R)
• M16: 7,686,937 km (0.062 R)
• M17: 7,980,598 km (0.066 R)
• M18: 8,505,686 km (0.055 R)
• M19: 9,472,238 km (0.031 R)
• M20: 10,092,620 km (0.088 R)
• M21: 10,772,842 km (0.111 R)
• M22: 11,107,343 km (0.063 R)
• M23: 11,726,827 km (0.112 R)

Planet 7 - Gas Giant

Semi-Major Axis: 2.38 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 535.2

Radius: 10.4

Gravity: 4.95 G

Time & Orbit

Eccentricity (e): 0.169

Orbit Range: 1.98 AU - 2.78 AU

Year: 2371 Days

Day: 13.8 Hours

Environment

Temp: -195 °C

Axial Tilt: 7.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 42,922,299 km

• M1: 131,347 km (0.118 R)
• M2: 710,739 km (0.112 R)
• M3: 1,363,734 km (0.092 R)
• M4: 2,239,630 km (0.05 R)
• M5: 2,571,587 km (0.054 R)
• M6: 2,982,682 km (0.047 R)
• M7: 3,628,796 km (0.084 R)
• M8: 4,206,692 km (0.041 R)
• M9: 4,611,504 km (0.09 R)
• M10: 5,476,030 km (0.104 R)
• M11: 6,110,175 km (0.089 R)
• M12: 7,294,243 km (0.087 R)
• M13: 8,092,946 km (0.113 R)
• M14: 8,850,958 km (0.11 R)
• M15: 9,213,882 km (0.073 R)
• M16: 11,999,694 km (0.089 R)
• M17: 13,934,742 km (0.1 R)
• M18: 14,381,442 km (0.036 R)
• M19: 15,683,392 km (0.118 R)
• M20: 16,363,015 km (0.084 R)
• M21: 16,910,693 km (0.089 R)

Planet 8 - Gas Giant

Semi-Major Axis: 2.5 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 327.9

Radius: 14.3

Gravity: 1.6 G

Time & Orbit

Eccentricity (e): 0.116

Orbit Range: 2.21 AU - 2.79 AU

Year: 2552 Days

Day: 13.7 Hours

Environment

Temp: -192 °C

Axial Tilt: 10.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 42,922,299 km

• M1: 182,958 km (0.116 R)
• M2: 675,584 km (0.091 R)
• M3: 1,282,353 km (0.074 R)
• M4: 2,422,738 km (0.085 R)
• M5: 3,595,286 km (0.025 R)
• M6: 4,215,818 km (0.085 R)
• M7: 4,722,506 km (0.118 R)
• M8: 5,291,725 km (0.08 R)
• M9: 5,812,476 km (0.115 R)
• M10: 7,955,316 km (0.047 R)
• M11: 8,641,222 km (0.072 R)
• M12: 10,029,340 km (0.074 R)
• M13: 10,477,087 km (0.119 R)
• M14: 13,286,236 km (0.113 R)
• M15: 13,742,958 km (0.103 R)

Asteroid Belt

Center: 3.76 AU

Composition

Type: Outer System (Icy)

A dense region of planetesimals and debris.

Boundary

Planet 9 - Gas Giant

Semi-Major Axis: 5.01 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 938.2

Radius: 10.3

Gravity: 8.84 G

Time & Orbit

Eccentricity (e): 0.198

Orbit Range: 4.02 AU - 6 AU

Year: 7241 Days

Day: 11.5 Hours

Environment

Temp: -217 °C

Axial Tilt: 39.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 42,922,299 km

• M1: 128,056 km (0.116 R)
• M2: 854,503 km (0.108 R)
• M3: 1,795,324 km (0.034 R)
• M4: 2,532,393 km (0.116 R)
• M5: 4,714,427 km (0.052 R)
• M6: 5,255,822 km (0.078 R)
• M7: 6,644,539 km (0.1 R)
• M8: 7,443,990 km (0.111 R)
• M9: 7,887,548 km (0.118 R)
• M10: 10,277,823 km (0.066 R)
• M11: 11,934,769 km (0.111 R)
• M12: 12,319,684 km (0.047 R)
• M13: 12,941,413 km (0.102 R)
• M14: 14,247,552 km (0.111 R)
• M15: 15,444,634 km (0.068 R)
• M16: 17,823,240 km (0.097 R)
• M17: 21,147,305 km (0.058 R)
• M18: 23,209,212 km (0.066 R)
• M19: 25,948,050 km (0.09 R)
• M20: 26,875,557 km (0.055 R)
• M21: 30,296,710 km (0.09 R)
• M22: 31,117,554 km (0.09 R)
• M23: 39,064,492 km (0.107 R)
• M24: 40,776,640 km (0.028 R)
• M25: 42,410,847 km (0.028 R)

Kuiper Belt

Range: 30 - 51 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 484 - 11,903 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit