🌌 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: 0.54 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.76

Radius: 0.9

Gravity: 0.94 G

Time & Orbit

Eccentricity (e): 0.211

Orbit Range: 0.43 AU - 0.65 AU

Year: 256 Days

Day: 30.1 Hours

Environment

Temp: -120 °C

Axial Tilt: 6.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.71 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 79.5

Radius: 9.7

Gravity: 0.84 G

Time & Orbit

Eccentricity (e): 0.098

Orbit Range: 0.64 AU - 0.78 AU

Year: 386 Days

Day: 9.8 Hours

Environment

Temp: -134 °C

Axial Tilt: 161.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (5)

Outer Limit: 27,996,632 km

• M1: 120,576 km (0.09 R)
• M2: 666,159 km (0.09 R)
• M3: 1,271,731 km (0.095 R)
• M4: 2,055,774 km (0.088 R)
• M5: 2,456,098 km (0.079 R)

Planet 3 - Gas Giant

Semi-Major Axis: 2.38 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 934.7

Radius: 13.5

Gravity: 5.13 G

Time & Orbit

Eccentricity (e): 0.09

Orbit Range: 2.17 AU - 2.59 AU

Year: 2371 Days

Day: 11.9 Hours

Environment

Temp: -187 °C

Axial Tilt: 24.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 27,996,632 km

• M1: 168,746 km (0.091 R)
• M2: 874,100 km (0.119 R)
• M3: 1,320,500 km (0.059 R)
• M4: 1,959,732 km (0.063 R)
• M5: 2,677,353 km (0.109 R)
• M6: 3,383,605 km (0.112 R)
• M7: 4,027,623 km (0.091 R)
• M8: 4,530,422 km (0.117 R)
• M9: 6,080,705 km (0.03 R)
• M10: 6,716,645 km (0.098 R)
• M11: 8,519,150 km (0.062 R)
• M12: 10,703,877 km (0.06 R)
• M13: 11,968,578 km (0.104 R)
• M14: 12,791,516 km (0.111 R)
• M15: 14,454,146 km (0.058 R)
• M16: 14,891,421 km (0.067 R)
• M17: 15,337,671 km (0.117 R)
• M18: 16,836,343 km (0.062 R)
• M19: 18,092,815 km (0.075 R)
• M20: 19,235,294 km (0.106 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.66 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 883

Radius: 12.7

Gravity: 5.47 G

Time & Orbit

Eccentricity (e): 0.132

Orbit Range: 2.31 AU - 3.01 AU

Year: 2801 Days

Day: 11.5 Hours

Environment

Temp: -200 °C

Axial Tilt: 35.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 27,996,632 km

• M1: 158,125 km (0.097 R)
• M2: 561,291 km (0.1 R)
• M3: 1,052,720 km (0.05 R)
• M4: 1,453,194 km (0.04 R)
• M5: 2,610,333 km (0.115 R)
• M6: 3,257,942 km (0.042 R)
• M7: 5,241,012 km (0.1 R)
• M8: 5,809,035 km (0.053 R)
• M9: 8,128,251 km (0.105 R)
• M10: 9,663,574 km (0.114 R)
• M11: 12,162,307 km (0.114 R)
• M12: 12,929,295 km (0.088 R)
• M13: 13,584,833 km (0.113 R)
• M14: 14,115,457 km (0.095 R)
• M15: 15,790,654 km (0.038 R)
• M16: 18,110,019 km (0.116 R)
• M17: 20,837,936 km (0.045 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.69 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 125.4

Radius: 12.6

Gravity: 0.79 G

Time & Orbit

Eccentricity (e): 0.069

Orbit Range: 3.44 AU - 3.94 AU

Year: 4577 Days

Day: 11.1 Hours

Environment

Temp: -203 °C

Axial Tilt: 23.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 27,996,632 km

• M1: 156,779 km (0.099 R)
• M2: 588,817 km (0.082 R)
• M3: 1,106,276 km (0.049 R)
• M4: 1,654,552 km (0.078 R)
• M5: 4,008,625 km (0.06 R)
• M6: 4,613,748 km (0.116 R)
• M7: 5,483,959 km (0.119 R)
• M8: 7,636,523 km (0.11 R)
• M9: 8,199,609 km (0.058 R)

Asteroid Belt

Center: 4.11 AU

Composition

Type: Outer System (Icy)

A dense region of planetesimals and debris.

Boundary

Planet 6 - Gas Giant

Semi-Major Axis: 4.53 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 49.5

Radius: 8.9

Gravity: 0.62 G

Time & Orbit

Eccentricity (e): 0.129

Orbit Range: 3.95 AU - 5.11 AU

Year: 6225 Days

Day: 11.4 Hours

Environment

Temp: -217 °C

Axial Tilt: 15.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 27,996,632 km

• M1: 110,702 km (0.103 R)
• M2: 463,005 km (0.057 R)
• M3: 909,555 km (0.062 R)
• M4: 1,678,488 km (0.093 R)
• M5: 2,702,336 km (0.106 R)
• M6: 3,017,539 km (0.09 R)
• M7: 4,693,035 km (0.095 R)
• M8: 7,618,272 km (0.108 R)
• M9: 9,234,826 km (0.103 R)
• M10: 13,623,579 km (0.11 R)

Planet 7 - Gas Giant

Semi-Major Axis: 4.79 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 297.9

Radius: 13.4

Gravity: 1.66 G

Time & Orbit

Eccentricity (e): 0.102

Orbit Range: 4.3 AU - 5.28 AU

Year: 6769 Days

Day: 9.4 Hours

Environment

Temp: -225 °C

Axial Tilt: 71.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 27,996,632 km

• M1: 167,101 km (0.097 R)
• M2: 684,560 km (0.082 R)
• M3: 1,486,853 km (0.112 R)
• M4: 3,001,083 km (0.102 R)
• M5: 3,583,168 km (0.058 R)
• M6: 7,191,918 km (0.109 R)
• M7: 7,739,147 km (0.046 R)
• M8: 10,510,896 km (0.026 R)
• M9: 11,535,641 km (0.111 R)
• M10: 12,001,639 km (0.091 R)
• M11: 12,674,979 km (0.089 R)
• M12: 13,322,738 km (0.095 R)
• M13: 18,241,216 km (0.105 R)
• M14: 19,261,623 km (0.083 R)
• M15: 21,696,478 km (0.038 R)
• M16: 23,061,110 km (0.031 R)
• M17: 25,409,498 km (0.047 R)
• M18: 26,601,344 km (0.05 R)

Kuiper Belt

Range: 30 - 52 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 182 - 12,132 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit