🌌 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: 0.56 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.6

Radius: 1.21

Gravity: 1.09 G

Time & Orbit

Eccentricity (e): 0.037

Orbit Range: 0.54 AU - 0.58 AU

Year: 266 Days

Day: 32.4 Hours

Environment

Temp: -133 °C

Axial Tilt: 21 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 42,272,635 km

• M1: 395,686 km (0.057 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.81 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 190.9

Radius: 13.5

Gravity: 1.05 G

Time & Orbit

Eccentricity (e): 0.012

Orbit Range: 0.8 AU - 0.82 AU

Year: 464 Days

Day: 11.5 Hours

Environment

Temp: -137 °C

Axial Tilt: 8.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 42,272,635 km

• M1: 168,746 km (0.11 R)
• M2: 604,226 km (0.096 R)
• M3: 1,068,578 km (0.074 R)
• M4: 1,542,055 km (0.11 R)
• M5: 1,998,328 km (0.045 R)
• M6: 2,562,612 km (0.106 R)
• M7: 3,192,867 km (0.116 R)
• M8: 3,936,369 km (0.05 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.84 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 319.4

Radius: 9.8

Gravity: 3.33 G

Time & Orbit

Eccentricity (e): 0.092

Orbit Range: 0.76 AU - 0.92 AU

Year: 489 Days

Day: 10.8 Hours

Environment

Temp: -142 °C

Axial Tilt: 18 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 42,272,635 km

• M1: 122,670 km (0.114 R)
• M2: 507,586 km (0.07 R)
• M3: 898,634 km (0.052 R)
• M4: 1,329,327 km (0.083 R)
• M5: 1,674,599 km (0.101 R)
• M6: 2,168,720 km (0.103 R)
• M7: 2,700,391 km (0.118 R)
• M8: 3,600,222 km (0.062 R)
• M9: 4,062,330 km (0.069 R)
• M10: 4,468,339 km (0.113 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.98 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 386.9

Radius: 13.3

Gravity: 2.19 G

Time & Orbit

Eccentricity (e): 0.079

Orbit Range: 0.9 AU - 1.06 AU

Year: 617 Days

Day: 9.5 Hours

Environment

Temp: -166 °C

Axial Tilt: 4.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 42,272,635 km

• M1: 165,455 km (0.109 R)
• M2: 640,728 km (0.087 R)
• M3: 1,656,497 km (0.076 R)
• M4: 3,259,289 km (0.112 R)
• M5: 4,583,529 km (0.117 R)
• M6: 5,007,789 km (0.079 R)
• M7: 5,558,608 km (0.038 R)
• M8: 6,006,803 km (0.065 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.87 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 10

Radius: 9.8

Gravity: 0.1 G

Time & Orbit

Eccentricity (e): 0.121

Orbit Range: 1.64 AU - 2.1 AU

Year: 1626 Days

Day: 12.7 Hours

Environment

Temp: -193 °C

Axial Tilt: 36.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (5)

Outer Limit: 42,272,635 km

• M1: 124,765 km (0.094 R)
• M2: 652,247 km (0.075 R)
• M3: 1,085,781 km (0.06 R)
• M4: 1,925,025 km (0.052 R)
• M5: 3,036,837 km (0.092 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.87 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 827.6

Radius: 14.6

Gravity: 3.88 G

Time & Orbit

Eccentricity (e): 0.071

Orbit Range: 2.67 AU - 3.07 AU

Year: 3091 Days

Day: 11.8 Hours

Environment

Temp: -201 °C

Axial Tilt: 36.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 42,272,635 km

• M1: 181,612 km (0.076 R)
• M2: 657,931 km (0.094 R)
• M3: 1,132,605 km (0.065 R)
• M4: 1,742,965 km (0.117 R)
• M5: 2,525,212 km (0.106 R)
• M6: 3,041,923 km (0.116 R)
• M7: 3,971,973 km (0.04 R)
• M8: 5,594,960 km (0.102 R)
• M9: 6,512,295 km (0.091 R)
• M10: 7,495,751 km (0.093 R)
• M11: 8,505,537 km (0.057 R)
• M12: 12,811,113 km (0.116 R)
• M13: 13,328,123 km (0.099 R)
• M14: 13,810,277 km (0.114 R)
• M15: 17,064,629 km (0.083 R)
• M16: 17,806,784 km (0.112 R)
• M17: 21,122,771 km (0.044 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.66 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 460.4

Radius: 14.1

Gravity: 2.32 G

Time & Orbit

Eccentricity (e): 0.158

Orbit Range: 3.08 AU - 4.24 AU

Year: 4452 Days

Day: 5 Hours

Environment

Temp: -207 °C

Axial Tilt: 4.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 42,272,635 km

• M1: 175,329 km (0.073 R)
• M2: 632,799 km (0.114 R)
• M3: 1,262,756 km (0.089 R)
• M4: 2,001,919 km (0.103 R)
• M5: 2,464,775 km (0.081 R)
• M6: 3,495,205 km (0.101 R)
• M7: 4,466,544 km (0.061 R)
• M8: 5,504,454 km (0.089 R)
• M9: 6,080,705 km (0.1 R)
• M10: 7,099,616 km (0.115 R)
• M11: 8,021,737 km (0.099 R)
• M12: 8,764,640 km (0.072 R)
• M13: 12,113,239 km (0.055 R)
• M14: 13,478,619 km (0.088 R)
• M15: 15,366,693 km (0.085 R)
• M16: 16,457,860 km (0.108 R)
• M17: 17,600,040 km (0.106 R)
• M18: 21,278,203 km (0.08 R)
• M19: 23,121,099 km (0.102 R)

Planet 8 - Gas Giant

Semi-Major Axis: 5.61 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 111.2

Radius: 13.7

Gravity: 0.59 G

Time & Orbit

Eccentricity (e): 0.1

Orbit Range: 5.05 AU - 6.17 AU

Year: 8448 Days

Day: 13.7 Hours

Environment

Temp: -213 °C

Axial Tilt: 23 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 42,272,635 km

• M1: 186,249 km (0.089 R)
• M2: 1,963,771 km (0.073 R)
• M3: 2,688,124 km (0.094 R)
• M4: 3,265,722 km (0.066 R)
• M5: 3,722,593 km (0.072 R)
• M6: 6,541,017 km (0.064 R)
• M7: 19,499,634 km (0.075 R)
• M8: 21,473,578 km (0.119 R)

Planet 9 - Ice Giant

Semi-Major Axis: 8.25 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 259.4

Radius: 6.6

Gravity: 5.96 G

Time & Orbit

Eccentricity (e): 0.002

Orbit Range: 8.23 AU - 8.27 AU

Year: 15067 Days

Day: 20.9 Hours

Environment

Temp: -217 °C

Axial Tilt: 22.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 42,272,635 km

• M1: 82,129 km (0.062 R)
• M2: 593,455 km (0.054 R)
• M3: 818,749 km (0.109 R)
• M4: 1,070,074 km (0.113 R)
• M5: 1,411,306 km (0.101 R)
• M6: 2,843,556 km (0.08 R)
• M7: 3,263,627 km (0.096 R)
• M8: 5,667,067 km (0.115 R)
• M9: 6,970,812 km (0.113 R)
• M10: 8,958,519 km (0.05 R)
• M11: 9,713,539 km (0.099 R)
• M12: 10,007,350 km (0.082 R)
• M13: 12,176,519 km (0.092 R)
• M14: 13,220,861 km (0.109 R)
• M15: 14,261,015 km (0.102 R)
• M16: 14,962,330 km (0.109 R)
• M17: 15,888,042 km (0.039 R)
• M18: 16,227,629 km (0.104 R)
• M19: 16,781,141 km (0.058 R)
• M20: 25,257,805 km (0.075 R)
• M21: 33,802,985 km (0.12 R)
• M22: 40,332,184 km (0.028 R)

Planet 10 - Ice Giant

Semi-Major Axis: 10.5 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 100.4

Radius: 4.8

Gravity: 4.36 G

Time & Orbit

Eccentricity (e): 0.076

Orbit Range: 9.7 AU - 11.3 AU

Year: 21633 Days

Day: 19.2 Hours

Environment

Temp: -231 °C

Axial Tilt: 1.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 42,272,635 km

• M1: 61,784 km (0.091 R)
• M2: 344,673 km (0.071 R)
• M3: 579,991 km (0.093 R)
• M4: 827,575 km (0.103 R)
• M5: 1,210,845 km (0.078 R)
• M6: 1,660,985 km (0.065 R)
• M7: 2,376,063 km (0.112 R)
• M8: 4,115,138 km (0.105 R)
• M9: 8,554,156 km (0.094 R)
• M10: 11,281,923 km (0.116 R)
• M11: 11,759,739 km (0.07 R)
• M12: 16,548,816 km (0.092 R)
• M13: 16,889,450 km (0.11 R)
• M14: 19,406,434 km (0.083 R)
• M15: 22,080,496 km (0.074 R)
• M16: 24,459,102 km (0.109 R)
• M17: 25,168,944 km (0.106 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: 288 - 12,930 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit