🌌 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: 4.72

Radius: 1.86

Gravity: 1.36 G

Time & Orbit

Eccentricity (e): 0.008

Orbit Range: 0.57 AU - 0.57 AU

Year: 282 Days

Day: 34.6 Hours

Environment

Temp: -135 °C

Axial Tilt: 39.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.62 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.72

Radius: 1.69

Gravity: 1.3 G

Time & Orbit

Eccentricity (e): 0.154

Orbit Range: 0.52 AU - 0.72 AU

Year: 320 Days

Day: 44.5 Hours

Environment

Temp: -137 °C

Axial Tilt: 27.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.77 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 618.4

Radius: 12.2

Gravity: 4.15 G

Time & Orbit

Eccentricity (e): 0.244

Orbit Range: 0.58 AU - 0.96 AU

Year: 443 Days

Day: 9 Hours

Environment

Temp: -138 °C

Axial Tilt: 1.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 35,686,916 km

• M1: 151,692 km (0.083 R)
• M2: 535,411 km (0.066 R)
• M3: 964,757 km (0.095 R)
• M4: 1,372,261 km (0.101 R)
• M5: 2,131,620 km (0.12 R)
• M6: 2,573,831 km (0.074 R)
• M7: 2,958,896 km (0.087 R)
• M8: 3,394,226 km (0.106 R)
• M9: 4,002,341 km (0.115 R)
• M10: 4,523,092 km (0.094 R)
• M11: 4,981,011 km (0.085 R)
• M12: 5,388,814 km (0.037 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.78 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 950.4

Radius: 13.2

Gravity: 5.45 G

Time & Orbit

Eccentricity (e): 0.131

Orbit Range: 0.68 AU - 0.88 AU

Year: 452 Days

Day: 12.8 Hours

Environment

Temp: -153 °C

Axial Tilt: 28.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 35,686,916 km

• M1: 164,109 km (0.097 R)
• M2: 584,628 km (0.113 R)
• M3: 1,062,893 km (0.096 R)
• M4: 1,673,851 km (0.102 R)
• M5: 2,199,687 km (0.09 R)
• M6: 2,760,081 km (0.065 R)
• M7: 3,197,505 km (0.096 R)
• M8: 3,921,259 km (0.051 R)
• M9: 4,418,224 km (0.067 R)
• M10: 4,909,204 km (0.082 R)
• M11: 5,453,590 km (0.116 R)
• M12: 5,983,316 km (0.116 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.2 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 116.3

Radius: 15

Gravity: 0.52 G

Time & Orbit

Eccentricity (e): 0.155

Orbit Range: 1.01 AU - 1.39 AU

Year: 862 Days

Day: 5.6 Hours

Environment

Temp: -165 °C

Axial Tilt: 20.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 35,686,916 km

• M1: 186,848 km (0.05 R)
• M2: 810,820 km (0.087 R)
• M3: 1,292,526 km (0.106 R)
• M4: 1,914,254 km (0.035 R)
• M5: 2,900,104 km (0.085 R)
• M6: 3,497,897 km (0.095 R)
• M7: 4,177,670 km (0.103 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.35 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 761.6

Radius: 12.6

Gravity: 4.8 G

Time & Orbit

Eccentricity (e): 0.151

Orbit Range: 1.15 AU - 1.55 AU

Year: 1029 Days

Day: 13.1 Hours

Environment

Temp: -183 °C

Axial Tilt: 43.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 35,686,916 km

• M1: 156,779 km (0.108 R)
• M2: 549,922 km (0.1 R)
• M3: 1,005,298 km (0.106 R)
• M4: 1,711,848 km (0.094 R)
• M5: 2,126,085 km (0.03 R)
• M6: 3,135,571 km (0.112 R)
• M7: 3,827,312 km (0.094 R)
• M8: 5,847,182 km (0.087 R)
• M9: 6,756,887 km (0.114 R)
• M10: 7,307,258 km (0.07 R)
• M11: 7,965,339 km (0.067 R)
• M12: 9,197,726 km (0.036 R)
• M13: 10,458,836 km (0.069 R)

Planet 7 - Gas Giant

Semi-Major Axis: 2.18 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 357

Radius: 9.1

Gravity: 4.31 G

Time & Orbit

Eccentricity (e): 0.222

Orbit Range: 1.7 AU - 2.66 AU

Year: 2112 Days

Day: 7.5 Hours

Environment

Temp: -202 °C

Axial Tilt: 49.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 35,686,916 km

• M1: 113,246 km (0.112 R)
• M2: 553,512 km (0.115 R)
• M3: 1,670,260 km (0.084 R)
• M4: 2,407,179 km (0.113 R)
• M5: 2,773,545 km (0.098 R)
• M6: 3,787,070 km (0.106 R)
• M7: 4,511,423 km (0.107 R)
• M8: 6,451,857 km (0.06 R)
• M9: 9,805,392 km (0.088 R)
• M10: 12,763,391 km (0.103 R)
• M11: 13,596,801 km (0.085 R)

Planet 8 - Gas Giant

Semi-Major Axis: 3.06 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 818.8

Radius: 11.3

Gravity: 6.41 G

Time & Orbit

Eccentricity (e): 0.018

Orbit Range: 3 AU - 3.12 AU

Year: 3511 Days

Day: 7.6 Hours

Environment

Temp: -211 °C

Axial Tilt: 6.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 35,686,916 km

• M1: 140,622 km (0.113 R)
• M2: 533,915 km (0.067 R)
• M3: 1,130,212 km (0.055 R)
• M4: 2,344,348 km (0.117 R)
• M5: 4,017,900 km (0.093 R)
• M6: 4,586,072 km (0.061 R)
• M7: 5,053,266 km (0.102 R)
• M8: 7,412,425 km (0.114 R)
• M9: 8,925,907 km (0.076 R)
• M10: 11,635,573 km (0.119 R)
• M11: 13,671,001 km (0.105 R)
• M12: 15,658,260 km (0.114 R)
• M13: 25,018,598 km (0.111 R)

Asteroid Belt

Center: 3.5 AU

Composition

Type: Outer System (Icy)

A dense region of planetesimals and debris.

Boundary

Planet 9 - Gas Giant

Semi-Major Axis: 3.93 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 798.4

Radius: 8.5

Gravity: 11.05 G

Time & Orbit

Eccentricity (e): 0.121

Orbit Range: 3.45 AU - 4.41 AU

Year: 5111 Days

Day: 11 Hours

Environment

Temp: -202 °C

Axial Tilt: 13.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 35,686,916 km

• M1: 106,065 km (0.098 R)
• M2: 382,671 km (0.082 R)
• M3: 811,269 km (0.034 R)
• M4: 2,369,780 km (0.104 R)
• M5: 3,358,173 km (0.042 R)
• M6: 3,910,189 km (0.035 R)
• M7: 4,944,958 km (0.095 R)
• M8: 6,673,112 km (0.094 R)
• M9: 8,028,020 km (0.118 R)
• M10: 8,650,198 km (0.085 R)
• M11: 11,224,627 km (0.092 R)
• M12: 12,353,643 km (0.075 R)
• M13: 13,288,779 km (0.084 R)
• M14: 14,721,777 km (0.102 R)
• M15: 15,182,688 km (0.1 R)
• M16: 15,832,092 km (0.11 R)
• M17: 18,152,954 km (0.116 R)
• M18: 22,993,492 km (0.071 R)
• M19: 24,245,925 km (0.108 R)
• M20: 29,167,994 km (0.12 R)
• M21: 29,987,043 km (0.119 R)
• M22: 30,355,802 km (0.119 R)
• M23: 30,634,502 km (0.106 R)

Planet 10 - Gas Giant

Semi-Major Axis: 4.22 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 874.1

Radius: 12.6

Gravity: 5.51 G

Time & Orbit

Eccentricity (e): 0.057

Orbit Range: 3.98 AU - 4.46 AU

Year: 5687 Days

Day: 13.3 Hours

Environment

Temp: -213 °C

Axial Tilt: 8.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (28)

Outer Limit: 35,686,916 km

• M1: 156,779 km (0.104 R)
• M2: 654,042 km (0.103 R)
• M3: 1,174,792 km (0.047 R)
• M4: 1,679,984 km (0.097 R)
• M5: 2,641,450 km (0.116 R)
• M6: 3,162,649 km (0.116 R)
• M7: 3,988,578 km (0.096 R)
• M8: 5,066,581 km (0.049 R)
• M9: 6,530,994 km (0.095 R)
• M10: 7,754,705 km (0.063 R)
• M11: 8,301,036 km (0.092 R)
• M12: 10,004,507 km (0.085 R)
• M13: 10,464,670 km (0.112 R)
• M14: 11,279,380 km (0.098 R)
• M15: 11,828,704 km (0.097 R)
• M16: 12,395,829 km (0.086 R)
• M17: 13,752,532 km (0.094 R)
• M18: 14,322,201 km (0.053 R)
• M19: 18,899,447 km (0.1 R)
• M20: 20,841,826 km (0.101 R)
• M21: 22,131,060 km (0.045 R)
• M22: 22,834,769 km (0.089 R)
• M23: 24,534,948 km (0.084 R)
• M24: 25,288,922 km (0.09 R)
• M25: 26,931,207 km (0.096 R)
• M26: 32,684,592 km (0.116 R)
• M27: 33,291,211 km (0.112 R)
• M28: 34,423,068 km (0.077 R)

Kuiper Belt

Range: 30 - 46 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 470 - 14,675 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit