🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.27 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.53 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.78

Radius: 1.26

Gravity: 1.12 G

Time & Orbit

Eccentricity (e): 0.192

Orbit Range: 0.43 AU - 0.63 AU

Year: 245 Days

Day: 45.3 Hours

Environment

Temp: -128 °C

Axial Tilt: 45.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 56,861,421 km

• M1: 31,864 km (0.077 R)
• M2: 486,941 km (0.073 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.55 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.99

Radius: 1

Gravity: 0.99 G

Time & Orbit

Eccentricity (e): 0.224

Orbit Range: 0.43 AU - 0.67 AU

Year: 259 Days

Day: 25.6 Hours

Environment

Temp: -112 °C

Axial Tilt: 39.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 56,861,421 km

• M1: 212,279 km (0.101 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.69 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 431.1

Radius: 13.1

Gravity: 2.51 G

Time & Orbit

Eccentricity (e): 0.115

Orbit Range: 0.61 AU - 0.77 AU

Year: 364 Days

Day: 12.3 Hours

Environment

Temp: -145 °C

Axial Tilt: 39 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 56,861,421 km

• M1: 162,912 km (0.045 R)
• M2: 638,185 km (0.101 R)
• M3: 1,121,984 km (0.095 R)
• M4: 1,531,433 km (0.089 R)
• M5: 2,006,407 km (0.03 R)
• M6: 2,633,521 km (0.062 R)
• M7: 3,293,547 km (0.094 R)
• M8: 4,037,497 km (0.095 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.88 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 822.6

Radius: 10.4

Gravity: 7.61 G

Time & Orbit

Eccentricity (e): 0.212

Orbit Range: 0.69 AU - 1.07 AU

Year: 525 Days

Day: 10.3 Hours

Environment

Temp: -143 °C

Axial Tilt: 26.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 56,861,421 km

• M1: 130,150 km (0.117 R)
• M2: 542,143 km (0.12 R)
• M3: 876,195 km (0.091 R)
• M4: 1,321,697 km (0.096 R)
• M5: 1,674,599 km (0.107 R)
• M6: 2,393,267 km (0.091 R)
• M7: 2,790,748 km (0.062 R)
• M8: 3,171,475 km (0.112 R)
• M9: 3,925,747 km (0.073 R)
• M10: 4,390,698 km (0.07 R)
• M11: 5,089,918 km (0.107 R)
• M12: 6,256,781 km (0.064 R)
• M13: 6,709,764 km (0.081 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.65 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 142.5

Radius: 8.2

Gravity: 2.12 G

Time & Orbit

Eccentricity (e): 0.127

Orbit Range: 1.44 AU - 1.86 AU

Year: 1348 Days

Day: 12.7 Hours

Environment

Temp: -174 °C

Axial Tilt: 8.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 56,861,421 km

• M1: 102,475 km (0.08 R)
• M2: 359,484 km (0.102 R)
• M3: 1,235,828 km (0.11 R)
• M4: 1,684,472 km (0.119 R)
• M5: 1,969,606 km (0.097 R)
• M6: 2,376,661 km (0.059 R)
• M7: 2,850,288 km (0.087 R)
• M8: 3,233,259 km (0.112 R)
• M9: 3,886,104 km (0.103 R)
• M10: 4,342,677 km (0.111 R)
• M11: 5,102,783 km (0.092 R)
• M12: 5,873,212 km (0.115 R)
• M13: 6,217,886 km (0.082 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.99 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 542.6

Radius: 14.3

Gravity: 2.65 G

Time & Orbit

Eccentricity (e): 0.231

Orbit Range: 2.3 AU - 3.68 AU

Year: 3287 Days

Day: 11.1 Hours

Environment

Temp: -193 °C

Axial Tilt: 14.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 56,861,421 km

• M1: 177,872 km (0.119 R)
• M2: 632,799 km (0.114 R)
• M3: 1,114,953 km (0.078 R)
• M4: 1,718,730 km (0.066 R)
• M5: 3,895,977 km (0.08 R)
• M6: 4,770,526 km (0.1 R)
• M7: 6,393,663 km (0.103 R)
• M8: 6,999,385 km (0.084 R)
• M9: 7,486,476 km (0.108 R)
• M10: 7,996,156 km (0.12 R)
• M11: 8,495,065 km (0.058 R)
• M12: 10,233,392 km (0.084 R)
• M13: 10,902,543 km (0.109 R)
• M14: 11,351,187 km (0.097 R)
• M15: 12,241,743 km (0.071 R)
• M16: 12,951,286 km (0.068 R)
• M17: 14,697,243 km (0.041 R)
• M18: 16,595,490 km (0.076 R)
• M19: 17,911,203 km (0.041 R)

Planet 7 - Ice Giant

Semi-Major Axis: 7.87 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 580.3

Radius: 4.6

Gravity: 27.42 G

Time & Orbit

Eccentricity (e): 0.017

Orbit Range: 7.74 AU - 8 AU

Year: 14038 Days

Day: 23.4 Hours

Environment

Temp: -219 °C

Axial Tilt: 11 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (40)

Outer Limit: 56,861,421 km

• M1: 57,894 km (0.102 R)
• M2: 264,639 km (0.044 R)
• M3: 662,120 km (0.088 R)
• M4: 1,212,940 km (0.114 R)
• M5: 1,414,149 km (0.119 R)
• M6: 2,471,806 km (0.113 R)
• M7: 2,751,853 km (0.054 R)
• M8: 2,911,175 km (0.077 R)
• M9: 3,375,227 km (0.097 R)
• M10: 4,058,740 km (0.102 R)
• M11: 5,130,609 km (0.108 R)
• M12: 7,372,931 km (0.029 R)
• M13: 7,681,402 km (0.105 R)
• M14: 7,906,846 km (0.113 R)
• M15: 8,755,664 km (0.118 R)
• M16: 9,873,459 km (0.116 R)
• M17: 10,194,048 km (0.105 R)
• M18: 11,487,920 km (0.109 R)
• M19: 12,143,757 km (0.094 R)
• M20: 12,761,446 km (0.107 R)
• M21: 13,206,051 km (0.11 R)
• M22: 13,595,305 km (0.091 R)
• M23: 16,462,498 km (0.101 R)
• M24: 20,302,226 km (0.105 R)
• M25: 21,083,127 km (0.096 R)
• M26: 21,436,477 km (0.045 R)
• M27: 21,883,625 km (0.119 R)
• M28: 26,294,519 km (0.12 R)
• M29: 28,277,139 km (0.063 R)
• M30: 29,032,010 km (0.106 R)
• M31: 29,469,434 km (0.103 R)
• M32: 30,022,198 km (0.069 R)
• M33: 30,469,496 km (0.098 R)
• M34: 37,721,552 km (0.117 R)
• M35: 41,467,483 km (0.044 R)
• M36: 43,858,655 km (0.108 R)
• M37: 50,313,953 km (0.077 R)
• M38: 51,740,668 km (0.091 R)
• M39: 52,383,340 km (0.103 R)
• M40: 54,674,731 km (0.092 R)

Kuiper Belt

Range: 30 - 45 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 480 - 12,830 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit