🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.28 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.55 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.51

Radius: 0.76

Gravity: 0.88 G

Time & Orbit

Eccentricity (e): 0.134

Orbit Range: 0.48 AU - 0.62 AU

Year: 268 Days

Day: 32 Hours

Environment

Temp: -130 °C

Axial Tilt: 19.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 21,269,356 km

• M1: 17,653 km (0.116 R)
• M2: 333,753 km (0.086 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.67 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.62

Radius: 1.21

Gravity: 1.11 G

Time & Orbit

Eccentricity (e): 0.233

Orbit Range: 0.51 AU - 0.83 AU

Year: 360 Days

Day: 31 Hours

Environment

Temp: -139 °C

Axial Tilt: 5.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 21,269,356 km

• M1: 29,321 km (0.111 R)
• M2: 368,759 km (0.084 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.95 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 426.9

Radius: 12.3

Gravity: 2.82 G

Time & Orbit

Eccentricity (e): 0.153

Orbit Range: 0.8 AU - 1.1 AU

Year: 607 Days

Day: 14.1 Hours

Environment

Temp: -157 °C

Axial Tilt: 16.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 21,269,356 km

• M1: 153,039 km (0.119 R)
• M2: 616,942 km (0.095 R)
• M3: 1,152,352 km (0.113 R)
• M4: 1,617,153 km (0.118 R)
• M5: 2,279,572 km (0.113 R)
• M6: 2,971,463 km (0.089 R)
• M7: 3,891,190 km (0.051 R)
• M8: 4,446,797 km (0.093 R)
• M9: 5,346,478 km (0.101 R)
• M10: 5,822,499 km (0.107 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.97 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 901.3

Radius: 12

Gravity: 6.26 G

Time & Orbit

Eccentricity (e): 0.123

Orbit Range: 0.85 AU - 1.09 AU

Year: 627 Days

Day: 13.5 Hours

Environment

Temp: -154 °C

Axial Tilt: 18.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 21,269,356 km

• M1: 149,299 km (0.086 R)
• M2: 522,695 km (0.047 R)
• M3: 1,124,378 km (0.085 R)
• M4: 1,517,970 km (0.067 R)
• M5: 2,928,528 km (0.078 R)
• M6: 3,623,709 km (0.079 R)
• M7: 4,238,257 km (0.078 R)
• M8: 4,903,968 km (0.111 R)
• M9: 5,657,193 km (0.041 R)
• M10: 6,865,345 km (0.103 R)
• M11: 7,371,585 km (0.099 R)
• M12: 8,189,885 km (0.06 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.72 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 267.9

Radius: 14.4

Gravity: 1.29 G

Time & Orbit

Eccentricity (e): 0.165

Orbit Range: 1.44 AU - 2 AU

Year: 1480 Days

Day: 12.3 Hours

Environment

Temp: -187 °C

Axial Tilt: 7.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 21,269,356 km

• M1: 184,604 km (0.114 R)
• M2: 785,987 km (0.095 R)
• M3: 1,807,292 km (0.062 R)
• M4: 2,343,002 km (0.115 R)
• M5: 3,179,703 km (0.07 R)
• M6: 4,889,906 km (0.117 R)
• M7: 6,302,857 km (0.111 R)
• M8: 8,459,760 km (0.067 R)
• M9: 8,911,844 km (0.118 R)
• M10: 9,606,128 km (0.106 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.14 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 116.3

Radius: 13.1

Gravity: 0.68 G

Time & Orbit

Eccentricity (e): 0.022

Orbit Range: 2.09 AU - 2.19 AU

Year: 2054 Days

Day: 13.7 Hours

Environment

Temp: -191 °C

Axial Tilt: 32.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 21,269,356 km

• M1: 163,660 km (0.104 R)
• M2: 735,124 km (0.057 R)
• M3: 1,172,997 km (0.115 R)
• M4: 2,172,759 km (0.104 R)
• M5: 3,080,071 km (0.068 R)
• M6: 7,653,128 km (0.049 R)
• M7: 8,092,796 km (0.12 R)
• M8: 8,995,918 km (0.088 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 705.9

Radius: 15

Gravity: 3.14 G

Time & Orbit

Eccentricity (e): 0.128

Orbit Range: 2.62 AU - 3.38 AU

Year: 3409 Days

Day: 12.6 Hours

Environment

Temp: -200 °C

Axial Tilt: 24.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 21,269,356 km

• M1: 186,549 km (0.092 R)
• M2: 668,702 km (0.094 R)
• M3: 1,235,230 km (0.044 R)
• M4: 2,037,074 km (0.067 R)
• M5: 3,029,357 km (0.032 R)
• M6: 3,795,896 km (0.106 R)
• M7: 5,718,827 km (0.106 R)
• M8: 6,273,536 km (0.081 R)
• M9: 7,204,484 km (0.079 R)
• M10: 7,687,236 km (0.065 R)
• M11: 8,260,495 km (0.094 R)
• M12: 9,878,396 km (0.099 R)
• M13: 12,642,965 km (0.049 R)
• M14: 14,479,578 km (0.049 R)
• M15: 15,409,179 km (0.11 R)
• M16: 16,050,804 km (0.115 R)
• M17: 17,502,352 km (0.043 R)
• M18: 18,979,033 km (0.108 R)

Planet 8 - Gas Giant

Semi-Major Axis: 3.12 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 457.9

Radius: 10.8

Gravity: 3.93 G

Time & Orbit

Eccentricity (e): 0.074

Orbit Range: 2.89 AU - 3.35 AU

Year: 3615 Days

Day: 5.3 Hours

Environment

Temp: -198 °C

Axial Tilt: 39.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 21,269,356 km

• M1: 134,339 km (0.045 R)
• M2: 532,120 km (0.062 R)
• M3: 936,034 km (0.067 R)
• M4: 1,275,771 km (0.032 R)
• M5: 1,779,766 km (0.104 R)
• M6: 2,682,290 km (0.106 R)
• M7: 3,689,083 km (0.097 R)
• M8: 4,343,873 km (0.064 R)
• M9: 5,494,879 km (0.065 R)
• M10: 6,809,246 km (0.031 R)
• M11: 7,352,586 km (0.116 R)
• M12: 8,390,047 km (0.07 R)
• M13: 8,944,157 km (0.118 R)
• M14: 9,302,594 km (0.087 R)
• M15: 9,934,346 km (0.037 R)
• M16: 11,283,419 km (0.049 R)
• M17: 11,787,564 km (0.109 R)
• M18: 13,765,846 km (0.066 R)
• M19: 15,593,184 km (0.107 R)
• M20: 16,378,124 km (0.089 R)
• M21: 17,299,498 km (0.042 R)
• M22: 17,857,348 km (0.1 R)
• M23: 20,579,581 km (0.096 R)

Kuiper Belt

Range: 30 - 56 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 207 - 18,600 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit