🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.26 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.51 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.49

Radius: 1.65

Gravity: 1.28 G

Time & Orbit

Eccentricity (e): 0.216

Orbit Range: 0.4 AU - 0.62 AU

Year: 239 Days

Day: 32.3 Hours

Environment

Temp: -108 °C

Axial Tilt: 35.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.74 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 715

Radius: 10.8

Gravity: 6.13 G

Time & Orbit

Eccentricity (e): 0.186

Orbit Range: 0.6 AU - 0.88 AU

Year: 418 Days

Day: 10.7 Hours

Environment

Temp: -142 °C

Axial Tilt: 18.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 29,630,826 km

• M1: 134,339 km (0.034 R)
• M2: 560,992 km (0.12 R)
• M3: 1,080,545 km (0.119 R)
• M4: 1,550,582 km (0.067 R)
• M5: 1,908,570 km (0.112 R)
• M6: 2,295,430 km (0.044 R)
• M7: 2,827,101 km (0.086 R)
• M8: 3,275,595 km (0.087 R)
• M9: 3,633,583 km (0.113 R)
• M10: 4,823,335 km (0.056 R)
• M11: 5,256,869 km (0.12 R)
• M12: 5,750,243 km (0.064 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.7 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 840.3

Radius: 9

Gravity: 10.37 G

Time & Orbit

Eccentricity (e): 0.022

Orbit Range: 1.66 AU - 1.74 AU

Year: 1454 Days

Day: 7.6 Hours

Environment

Temp: -181 °C

Axial Tilt: 38 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 29,630,826 km

• M1: 112,198 km (0.103 R)
• M2: 417,677 km (0.109 R)
• M3: 790,774 km (0.098 R)
• M4: 1,147,416 km (0.118 R)
• M5: 2,390,574 km (0.115 R)
• M6: 2,959,046 km (0.047 R)
• M7: 3,581,672 km (0.12 R)
• M8: 3,871,593 km (0.1 R)
• M9: 4,636,337 km (0.089 R)
• M10: 5,655,697 km (0.091 R)
• M11: 6,639,004 km (0.085 R)
• M12: 6,973,505 km (0.103 R)
• M13: 7,648,341 km (0.11 R)
• M14: 8,848,564 km (0.099 R)
• M15: 9,254,124 km (0.118 R)
• M16: 10,824,902 km (0.066 R)
• M17: 12,683,057 km (0.047 R)
• M18: 13,441,967 km (0.111 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.31 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 27.1

Radius: 11.8

Gravity: 0.19 G

Time & Orbit

Eccentricity (e): 0.011

Orbit Range: 2.28 AU - 2.34 AU

Year: 2303 Days

Day: 14.3 Hours

Environment

Temp: -201 °C

Axial Tilt: 53.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 29,630,826 km

• M1: 146,756 km (0.046 R)
• M2: 578,046 km (0.079 R)
• M3: 1,089,970 km (0.083 R)
• M4: 1,754,035 km (0.104 R)
• M5: 2,166,327 km (0.081 R)
• M6: 2,714,453 km (0.091 R)
• M7: 3,225,180 km (0.106 R)
• M8: 3,943,549 km (0.114 R)
• M9: 4,383,816 km (0.04 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.46 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 215.8

Radius: 12.4

Gravity: 1.4 G

Time & Orbit

Eccentricity (e): 0.187

Orbit Range: 2 AU - 2.92 AU

Year: 2531 Days

Day: 13 Hours

Environment

Temp: -205 °C

Axial Tilt: 19.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 29,630,826 km

• M1: 154,235 km (0.077 R)
• M2: 565,031 km (0.063 R)
• M3: 973,433 km (0.086 R)
• M4: 1,643,781 km (0.115 R)
• M5: 2,085,095 km (0.071 R)
• M6: 3,663,203 km (0.105 R)
• M7: 4,191,433 km (0.088 R)
• M8: 5,295,765 km (0.114 R)
• M9: 5,837,758 km (0.09 R)
• M10: 7,608,398 km (0.12 R)
• M11: 8,823,432 km (0.111 R)
• M12: 9,586,980 km (0.105 R)
• M13: 11,246,170 km (0.045 R)
• M14: 11,635,573 km (0.087 R)
• M15: 12,478,856 km (0.096 R)
• M16: 12,973,277 km (0.05 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.81 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 911

Radius: 14

Gravity: 4.65 G

Time & Orbit

Eccentricity (e): 0.034

Orbit Range: 2.71 AU - 2.91 AU

Year: 3090 Days

Day: 10.1 Hours

Environment

Temp: -199 °C

Axial Tilt: 32.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 29,630,826 km

• M1: 182,659 km (0.101 R)
• M2: 693,536 km (0.069 R)
• M3: 1,366,128 km (0.09 R)
• M4: 1,846,786 km (0.108 R)
• M5: 3,128,241 km (0.114 R)
• M6: 3,694,918 km (0.096 R)
• M7: 5,187,157 km (0.12 R)
• M8: 5,765,053 km (0.067 R)
• M9: 6,298,519 km (0.115 R)
• M10: 6,773,193 km (0.088 R)
• M11: 8,807,425 km (0.11 R)
• M12: 9,251,432 km (0.03 R)
• M13: 10,632,519 km (0.115 R)
• M14: 12,420,513 km (0.098 R)
• M15: 14,915,057 km (0.108 R)
• M16: 16,641,417 km (0.108 R)
• M17: 17,494,873 km (0.117 R)
• M18: 18,921,139 km (0.077 R)
• M19: 19,725,377 km (0.105 R)
• M20: 21,072,506 km (0.12 R)
• M21: 24,092,887 km (0.093 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.68 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 754.5

Radius: 12.6

Gravity: 4.75 G

Time & Orbit

Eccentricity (e): 0.05

Orbit Range: 3.5 AU - 3.86 AU

Year: 4631 Days

Day: 9 Hours

Environment

Temp: -200 °C

Axial Tilt: 14.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 29,630,826 km

• M1: 157,078 km (0.078 R)
• M2: 639,680 km (0.048 R)
• M3: 1,113,457 km (0.061 R)
• M4: 1,578,258 km (0.102 R)
• M5: 2,129,226 km (0.08 R)
• M6: 2,969,817 km (0.112 R)
• M7: 5,444,465 km (0.068 R)
• M8: 6,333,974 km (0.086 R)
• M9: 7,775,050 km (0.065 R)
• M10: 10,179,986 km (0.111 R)
• M11: 10,750,402 km (0.103 R)
• M12: 17,751,283 km (0.117 R)
• M13: 18,257,523 km (0.104 R)
• M14: 24,094,532 km (0.044 R)
• M15: 26,560,803 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: 469 - 17,633 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit