🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.3 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.59 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.96

Radius: 1.9

Gravity: 1.37 G

Time & Orbit

Eccentricity (e): 0.031

Orbit Range: 0.57 AU - 0.61 AU

Year: 293 Days

Day: 42.4 Hours

Environment

Temp: -133 °C

Axial Tilt: 154.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 30,628,531 km

• M1: 148,251 km (0.068 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.95 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 774

Radius: 13.5

Gravity: 4.25 G

Time & Orbit

Eccentricity (e): 0.193

Orbit Range: 0.77 AU - 1.13 AU

Year: 598 Days

Day: 7 Hours

Environment

Temp: -154 °C

Axial Tilt: 34.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 30,628,531 km

• M1: 167,849 km (0.105 R)
• M2: 617,540 km (0.107 R)
• M3: 1,632,113 km (0.085 R)
• M4: 2,218,088 km (0.091 R)
• M5: 2,706,674 km (0.069 R)
• M6: 3,168,632 km (0.082 R)
• M7: 3,602,766 km (0.104 R)
• M8: 4,269,074 km (0.071 R)
• M9: 6,134,111 km (0.082 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.39 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 625.1

Radius: 14.6

Gravity: 2.93 G

Time & Orbit

Eccentricity (e): 0.08

Orbit Range: 1.28 AU - 1.5 AU

Year: 1058 Days

Day: 8.2 Hours

Environment

Temp: -164 °C

Axial Tilt: 36.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 30,628,531 km

• M1: 181,911 km (0.081 R)
• M2: 769,382 km (0.066 R)
• M3: 1,881,792 km (0.118 R)
• M4: 2,936,606 km (0.061 R)
• M5: 3,409,036 km (0.103 R)
• M6: 4,721,010 km (0.116 R)
• M7: 5,734,236 km (0.089 R)
• M8: 6,501,972 km (0.082 R)
• M9: 7,241,285 km (0.028 R)
• M10: 7,706,385 km (0.119 R)
• M11: 8,375,237 km (0.1 R)
• M12: 9,712,043 km (0.076 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.95 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 849.9

Radius: 9.5

Gravity: 9.42 G

Time & Orbit

Eccentricity (e): 0.062

Orbit Range: 1.83 AU - 2.07 AU

Year: 1758 Days

Day: 8.4 Hours

Environment

Temp: -198 °C

Axial Tilt: 37.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 30,628,531 km

• M1: 118,332 km (0.068 R)
• M2: 433,983 km (0.03 R)
• M3: 732,282 km (0.062 R)
• M4: 1,256,772 km (0.119 R)
• M5: 1,881,642 km (0.057 R)
• M6: 2,209,411 km (0.103 R)
• M7: 2,561,564 km (0.103 R)
• M8: 2,966,526 km (0.084 R)
• M9: 3,314,341 km (0.062 R)
• M10: 3,905,552 km (0.12 R)
• M11: 4,364,219 km (0.116 R)
• M12: 4,901,275 km (0.076 R)
• M13: 5,885,779 km (0.119 R)
• M14: 6,309,440 km (0.12 R)
• M15: 6,726,668 km (0.077 R)
• M16: 7,190,122 km (0.091 R)
• M17: 8,120,322 km (0.106 R)
• M18: 8,901,223 km (0.108 R)
• M19: 10,794,683 km (0.108 R)
• M20: 11,622,259 km (0.029 R)
• M21: 12,012,260 km (0.12 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.01 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 652.2

Radius: 14.4

Gravity: 3.15 G

Time & Orbit

Eccentricity (e): 0.04

Orbit Range: 1.93 AU - 2.09 AU

Year: 1840 Days

Day: 14 Hours

Environment

Temp: -184 °C

Axial Tilt: 6.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 30,628,531 km

• M1: 179,069 km (0.112 R)
• M2: 677,678 km (0.098 R)
• M3: 1,352,814 km (0.099 R)
• M4: 2,086,292 km (0.105 R)
• M5: 2,784,316 km (0.077 R)
• M6: 3,484,434 km (0.072 R)
• M7: 4,262,193 km (0.052 R)
• M8: 5,045,936 km (0.099 R)
• M9: 5,666,468 km (0.117 R)
• M10: 7,583,714 km (0.065 R)
• M11: 8,340,231 km (0.095 R)
• M12: 9,502,906 km (0.053 R)
• M13: 11,353,431 km (0.069 R)
• M14: 12,072,099 km (0.119 R)
• M15: 14,630,373 km (0.09 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.43 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 283.3

Radius: 8.6

Gravity: 3.83 G

Time & Orbit

Eccentricity (e): 0.05

Orbit Range: 2.31 AU - 2.55 AU

Year: 2446 Days

Day: 5.1 Hours

Environment

Temp: -199 °C

Axial Tilt: 29.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 30,628,531 km

• M1: 107,112 km (0.099 R)
• M2: 417,827 km (0.049 R)
• M3: 1,255,725 km (0.051 R)
• M4: 1,798,166 km (0.118 R)
• M5: 3,860,822 km (0.111 R)
• M6: 4,465,048 km (0.057 R)
• M7: 4,942,863 km (0.079 R)
• M8: 5,388,665 km (0.078 R)
• M9: 6,483,871 km (0.1 R)
• M10: 7,610,044 km (0.077 R)
• M11: 8,709,139 km (0.061 R)
• M12: 9,844,886 km (0.064 R)
• M13: 10,143,633 km (0.079 R)
• M14: 11,291,348 km (0.11 R)
• M15: 12,639,674 km (0.067 R)

Planet 7 - Gas Giant

Semi-Major Axis: 4.01 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 188.5

Radius: 14.4

Gravity: 0.91 G

Time & Orbit

Eccentricity (e): 0.203

Orbit Range: 3.2 AU - 4.82 AU

Year: 5185 Days

Day: 14.5 Hours

Environment

Temp: -210 °C

Axial Tilt: 14.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 30,628,531 km

• M1: 179,218 km (0.069 R)
• M2: 706,850 km (0.114 R)
• M3: 1,189,153 km (0.077 R)
• M4: 2,357,064 km (0.098 R)
• M5: 3,460,947 km (0.112 R)
• M6: 4,573,357 km (0.103 R)
• M7: 5,431,450 km (0.083 R)
• M8: 6,339,659 km (0.026 R)
• M9: 6,931,767 km (0.095 R)
• M10: 8,358,931 km (0.075 R)
• M11: 11,215,053 km (0.099 R)
• M12: 12,340,029 km (0.036 R)
• M13: 13,041,494 km (0.083 R)
• M14: 15,108,338 km (0.107 R)
• M15: 17,062,236 km (0.081 R)
• M16: 17,658,084 km (0.059 R)
• M17: 18,155,796 km (0.106 R)
• M18: 18,719,930 km (0.106 R)

Planet 8 - Ice Giant

Semi-Major Axis: 9.11 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 56.7

Radius: 3.2

Gravity: 5.54 G

Time & Orbit

Eccentricity (e): 0.096

Orbit Range: 8.24 AU - 9.98 AU

Year: 17754 Days

Day: 23.4 Hours

Environment

Temp: -238 °C

Axial Tilt: 43.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 30,628,531 km

• M1: 44,131 km (0.119 R)
• M2: 452,234 km (0.111 R)
• M3: 907,610 km (0.067 R)
• M4: 1,032,824 km (0.065 R)
• M5: 2,404,636 km (0.07 R)
• M6: 6,386,184 km (0.102 R)
• M7: 7,615,878 km (0.119 R)
• M8: 10,176,096 km (0.085 R)
• M9: 16,598,781 km (0.084 R)
• M10: 19,837,276 km (0.057 R)
• M11: 23,626,590 km (0.107 R)

Kuiper Belt

Range: 30 - 59 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 229 - 13,342 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit