🌌 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: 0.58 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.06

Radius: 1.34

Gravity: 1.15 G

Time & Orbit

Eccentricity (e): 0.084

Orbit Range: 0.53 AU - 0.63 AU

Year: 281 Days

Day: 31.6 Hours

Environment

Temp: -122 °C

Axial Tilt: 6.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.94 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 261

Radius: 11.8

Gravity: 1.87 G

Time & Orbit

Eccentricity (e): 0.222

Orbit Range: 0.73 AU - 1.15 AU

Year: 579 Days

Day: 13 Hours

Environment

Temp: -154 °C

Axial Tilt: 9.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 31,794,850 km

• M1: 146,756 km (0.119 R)
• M2: 992,731 km (0.085 R)
• M3: 1,522,757 km (0.118 R)
• M4: 2,649,378 km (0.107 R)
• M5: 3,143,949 km (0.071 R)
• M6: 3,944,896 km (0.089 R)
• M7: 4,592,804 km (0.085 R)
• M8: 5,083,186 km (0.09 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.36 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 260.6

Radius: 9.8

Gravity: 2.71 G

Time & Orbit

Eccentricity (e): 0.096

Orbit Range: 1.23 AU - 1.49 AU

Year: 1008 Days

Day: 14.1 Hours

Environment

Temp: -171 °C

Axial Tilt: 35.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 31,794,850 km

• M1: 121,922 km (0.104 R)
• M2: 447,447 km (0.099 R)
• M3: 765,492 km (0.089 R)
• M4: 1,162,824 km (0.109 R)
• M5: 1,619,247 km (0.111 R)
• M6: 1,972,897 km (0.078 R)
• M7: 2,338,364 km (0.077 R)
• M8: 2,919,702 km (0.049 R)
• M9: 3,771,811 km (0.1 R)
• M10: 4,158,970 km (0.12 R)
• M11: 4,732,678 km (0.118 R)
• M12: 5,393,602 km (0.044 R)
• M13: 6,076,366 km (0.111 R)
• M14: 7,414,220 km (0.104 R)

Asteroid Belt

Center: 1.75 AU

Composition

Type: Outer System (Icy)

A dense region of planetesimals and debris.

Boundary

Planet 4 - Gas Giant

Semi-Major Axis: 2.14 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 186.7

Radius: 8.3

Gravity: 2.71 G

Time & Orbit

Eccentricity (e): 0.111

Orbit Range: 1.9 AU - 2.38 AU

Year: 1990 Days

Day: 12.8 Hours

Environment

Temp: -184 °C

Axial Tilt: 13.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 31,794,850 km

• M1: 103,522 km (0.114 R)
• M2: 369,806 km (0.064 R)
• M3: 665,411 km (0.113 R)
• M4: 1,104,631 km (0.089 R)
• M5: 1,755,232 km (0.05 R)
• M6: 2,392,070 km (0.1 R)
• M7: 3,564,768 km (0.051 R)
• M8: 3,842,421 km (0.027 R)
• M9: 4,763,495 km (0.104 R)
• M10: 5,845,686 km (0.052 R)
• M11: 6,500,925 km (0.109 R)
• M12: 10,500,574 km (0.055 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.69 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 196

Radius: 10.4

Gravity: 1.81 G

Time & Orbit

Eccentricity (e): 0.036

Orbit Range: 2.59 AU - 2.79 AU

Year: 2805 Days

Day: 12.1 Hours

Environment

Temp: -192 °C

Axial Tilt: 17 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 31,794,850 km

• M1: 129,402 km (0.035 R)
• M2: 647,011 km (0.097 R)
• M3: 1,451,249 km (0.048 R)
• M4: 2,136,407 km (0.113 R)
• M5: 3,098,022 km (0.1 R)
• M6: 3,513,456 km (0.059 R)
• M7: 4,363,171 km (0.051 R)
• M8: 4,688,248 km (0.111 R)
• M9: 5,238,020 km (0.055 R)
• M10: 6,839,764 km (0.104 R)
• M11: 7,253,702 km (0.089 R)
• M12: 11,017,135 km (0.109 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.02 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 714

Radius: 14.7

Gravity: 3.3 G

Time & Orbit

Eccentricity (e): 0.074

Orbit Range: 2.8 AU - 3.24 AU

Year: 3337 Days

Day: 10.6 Hours

Environment

Temp: -209 °C

Axial Tilt: 8.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 31,794,850 km

• M1: 190,737 km (0.073 R)
• M2: 957,277 km (0.032 R)
• M3: 1,445,714 km (0.059 R)
• M4: 1,913,806 km (0.119 R)
• M5: 3,896,875 km (0.073 R)
• M6: 4,779,652 km (0.039 R)
• M7: 7,066,704 km (0.093 R)
• M8: 7,574,140 km (0.103 R)
• M9: 9,775,174 km (0.099 R)
• M10: 10,326,143 km (0.078 R)
• M11: 11,577,080 km (0.098 R)
• M12: 12,973,576 km (0.031 R)
• M13: 15,041,468 km (0.065 R)
• M14: 18,543,105 km (0.063 R)
• M15: 22,966,116 km (0.1 R)

Planet 7 - Gas Giant

Semi-Major Axis: 4.42 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 572.7

Radius: 12.6

Gravity: 3.61 G

Time & Orbit

Eccentricity (e): 0.102

Orbit Range: 3.97 AU - 4.87 AU

Year: 5908 Days

Day: 8.1 Hours

Environment

Temp: -209 °C

Axial Tilt: 22 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 31,794,850 km

• M1: 156,779 km (0.104 R)
• M2: 645,066 km (0.099 R)
• M3: 1,126,921 km (0.051 R)
• M4: 2,018,973 km (0.098 R)
• M5: 2,797,031 km (0.034 R)
• M6: 3,483,536 km (0.114 R)
• M7: 4,656,832 km (0.12 R)
• M8: 5,363,233 km (0.088 R)
• M9: 6,266,056 km (0.099 R)
• M10: 7,267,614 km (0.062 R)
• M11: 8,966,148 km (0.039 R)
• M12: 9,418,981 km (0.116 R)
• M13: 10,640,747 km (0.083 R)
• M14: 12,163,504 km (0.108 R)
• M15: 17,793,171 km (0.109 R)
• M16: 18,775,131 km (0.079 R)
• M17: 20,918,719 km (0.102 R)
• M18: 23,529,800 km (0.071 R)
• M19: 26,100,789 km (0.108 R)
• M20: 27,111,473 km (0.062 R)
• M21: 27,973,455 km (0.117 R)
• M22: 29,300,688 km (0.109 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: 416 - 15,037 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit