🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.32 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.64 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.84

Radius: 1.88

Gravity: 1.37 G

Time & Orbit

Eccentricity (e): 0.181

Orbit Range: 0.52 AU - 0.76 AU

Year: 336 Days

Day: 27.5 Hours

Environment

Temp: -122 °C

Axial Tilt: 33.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.65 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.67

Radius: 1.68

Gravity: 1.3 G

Time & Orbit

Eccentricity (e): 0.247

Orbit Range: 0.49 AU - 0.81 AU

Year: 344 Days

Day: 44 Hours

Environment

Temp: -130 °C

Axial Tilt: 39.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.71 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 908

Radius: 8.1

Gravity: 13.84 G

Time & Orbit

Eccentricity (e): 0.127

Orbit Range: 0.62 AU - 0.8 AU

Year: 392 Days

Day: 13.3 Hours

Environment

Temp: -146 °C

Axial Tilt: 3.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 50,115,540 km

• M1: 100,829 km (0.096 R)
• M2: 401,221 km (0.034 R)
• M3: 702,063 km (0.044 R)
• M4: 1,095,655 km (0.107 R)
• M5: 1,532,929 km (0.115 R)
• M6: 2,143,139 km (0.112 R)
• M7: 2,446,224 km (0.06 R)
• M8: 2,820,219 km (0.103 R)
• M9: 3,208,725 km (0.113 R)
• M10: 3,520,038 km (0.036 R)
• M11: 3,851,547 km (0.073 R)
• M12: 4,636,936 km (0.032 R)
• M13: 5,147,364 km (0.101 R)
• M14: 5,508,194 km (0.042 R)
• M15: 5,815,767 km (0.087 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.94 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 273.1

Radius: 13.4

Gravity: 1.52 G

Time & Orbit

Eccentricity (e): 0.204

Orbit Range: 0.75 AU - 1.13 AU

Year: 598 Days

Day: 12.7 Hours

Environment

Temp: -156 °C

Axial Tilt: 4.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 50,115,540 km

• M1: 166,802 km (0.09 R)
• M2: 591,061 km (0.102 R)
• M3: 1,262,157 km (0.109 R)
• M4: 2,158,697 km (0.09 R)
• M5: 3,802,329 km (0.112 R)
• M6: 4,550,169 km (0.078 R)
• M7: 5,284,994 km (0.102 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.08 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 895.8

Radius: 8.3

Gravity: 13 G

Time & Orbit

Eccentricity (e): 0.159

Orbit Range: 0.91 AU - 1.25 AU

Year: 736 Days

Day: 6 Hours

Environment

Temp: -153 °C

Axial Tilt: 22.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 50,115,540 km

• M1: 103,223 km (0.054 R)
• M2: 483,650 km (0.08 R)
• M3: 749,336 km (0.088 R)
• M4: 1,141,881 km (0.042 R)
• M5: 1,544,897 km (0.077 R)
• M6: 2,231,402 km (0.088 R)
• M7: 2,940,945 km (0.041 R)
• M8: 3,689,083 km (0.073 R)
• M9: 4,524,438 km (0.092 R)
• M10: 4,799,997 km (0.086 R)
• M11: 5,635,801 km (0.081 R)
• M12: 6,500,327 km (0.105 R)
• M13: 6,851,882 km (0.075 R)
• M14: 8,646,458 km (0.102 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.09 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 317.2

Radius: 11.6

Gravity: 2.36 G

Time & Orbit

Eccentricity (e): 0.053

Orbit Range: 1.03 AU - 1.15 AU

Year: 747 Days

Day: 8.1 Hours

Environment

Temp: -164 °C

Axial Tilt: 39.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 50,115,540 km

• M1: 144,960 km (0.11 R)
• M2: 514,168 km (0.079 R)
• M3: 929,003 km (0.079 R)
• M4: 1,451,548 km (0.118 R)
• M5: 2,494,844 km (0.111 R)
• M6: 2,878,861 km (0.101 R)
• M7: 3,625,355 km (0.11 R)
• M8: 4,037,946 km (0.105 R)
• M9: 5,519,563 km (0.09 R)

Planet 7 - Ice Giant

Semi-Major Axis: 6.27 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 453.5

Radius: 6.7

Gravity: 10.1 G

Time & Orbit

Eccentricity (e): 0.164

Orbit Range: 5.24 AU - 7.3 AU

Year: 10299 Days

Day: 24.8 Hours

Environment

Temp: -223 °C

Axial Tilt: 47.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (37)

Outer Limit: 50,115,540 km

• M1: 83,326 km (0.119 R)
• M2: 327,171 km (0.047 R)
• M3: 642,224 km (0.09 R)
• M4: 920,326 km (0.088 R)
• M5: 1,266,196 km (0.102 R)
• M6: 1,597,556 km (0.109 R)
• M7: 1,937,891 km (0.091 R)
• M8: 3,347,552 km (0.119 R)
• M9: 4,222,250 km (0.115 R)
• M10: 5,178,480 km (0.061 R)
• M11: 6,062,304 km (0.078 R)
• M12: 6,307,046 km (0.079 R)
• M13: 7,081,066 km (0.088 R)
• M14: 7,752,760 km (0.089 R)
• M15: 9,926,268 km (0.106 R)
• M16: 11,493,604 km (0.032 R)
• M17: 12,475,864 km (0.105 R)
• M18: 12,701,458 km (0.114 R)
• M19: 12,987,339 km (0.064 R)
• M20: 15,366,992 km (0.115 R)
• M21: 16,761,693 km (0.116 R)
• M22: 17,105,769 km (0.068 R)
• M23: 17,737,072 km (0.086 R)
• M24: 18,094,311 km (0.065 R)
• M25: 18,456,488 km (0.109 R)
• M26: 18,823,451 km (0.112 R)
• M27: 20,653,033 km (0.077 R)
• M28: 22,265,698 km (0.095 R)
• M29: 23,528,903 km (0.076 R)
• M30: 25,830,616 km (0.1 R)
• M31: 27,224,568 km (0.114 R)
• M32: 29,557,996 km (0.082 R)
• M33: 30,161,623 km (0.062 R)
• M34: 30,979,026 km (0.059 R)
• M35: 32,445,085 km (0.068 R)
• M36: 32,765,075 km (0.089 R)
• M37: 36,311,293 km (0.087 R)

Planet 8 - Ice Giant

Semi-Major Axis: 6.41 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 220.8

Radius: 6.9

Gravity: 4.64 G

Time & Orbit

Eccentricity (e): 0.118

Orbit Range: 5.65 AU - 7.17 AU

Year: 10646 Days

Day: 21.7 Hours

Environment

Temp: -218 °C

Axial Tilt: 17.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 50,115,540 km

• M1: 89,160 km (0.109 R)
• M2: 339,288 km (0.072 R)
• M3: 613,501 km (0.044 R)
• M4: 836,102 km (0.059 R)
• M5: 1,237,623 km (0.04 R)
• M6: 1,526,347 km (0.114 R)
• M7: 1,845,439 km (0.086 R)
• M8: 2,208,364 km (0.099 R)
• M9: 3,326,757 km (0.027 R)
• M10: 5,618,896 km (0.106 R)
• M11: 10,366,085 km (0.098 R)
• M12: 11,560,325 km (0.035 R)
• M13: 12,319,385 km (0.07 R)
• M14: 12,950,239 km (0.117 R)
• M15: 14,972,054 km (0.085 R)
• M16: 18,794,280 km (0.052 R)
• M17: 22,516,275 km (0.09 R)
• M18: 25,169,842 km (0.068 R)
• M19: 26,788,640 km (0.083 R)
• M20: 27,845,998 km (0.108 R)
• M21: 31,766,360 km (0.113 R)
• M22: 32,453,612 km (0.051 R)
• M23: 32,950,577 km (0.11 R)

Planet 9 - Ice Giant

Semi-Major Axis: 6.89 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 556.2

Radius: 4.1

Gravity: 33.09 G

Time & Orbit

Eccentricity (e): 0.17

Orbit Range: 5.72 AU - 8.06 AU

Year: 11864 Days

Day: 24.5 Hours

Environment

Temp: -233 °C

Axial Tilt: 21.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (27)

Outer Limit: 50,115,540 km

• M1: 51,013 km (0.098 R)
• M2: 210,035 km (0.081 R)
• M3: 428,000 km (0.087 R)
• M4: 778,208 km (0.089 R)
• M5: 972,237 km (0.114 R)
• M6: 1,722,470 km (0.096 R)
• M7: 2,628,285 km (0.065 R)
• M8: 3,681,304 km (0.116 R)
• M9: 4,228,982 km (0.085 R)
• M10: 5,020,056 km (0.101 R)
• M11: 5,315,512 km (0.059 R)
• M12: 5,692,199 km (0.111 R)
• M13: 6,809,994 km (0.092 R)
• M14: 9,273,871 km (0.09 R)
• M15: 11,982,789 km (0.08 R)
• M16: 13,360,586 km (0.116 R)
• M17: 18,350,872 km (0.112 R)
• M18: 19,129,529 km (0.083 R)
• M19: 25,492,225 km (0.092 R)
• M20: 26,362,885 km (0.12 R)
• M21: 27,252,992 km (0.103 R)
• M22: 27,756,090 km (0.079 R)
• M23: 28,367,945 km (0.099 R)
• M24: 32,905,099 km (0.096 R)
• M25: 40,320,815 km (0.085 R)
• M26: 44,761,478 km (0.1 R)
• M27: 46,453,729 km (0.098 R)

Kuiper Belt

Range: 30 - 50 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 514 - 10,853 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit