🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.33 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.66 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.52

Radius: 1.45

Gravity: 1.2 G

Time & Orbit

Eccentricity (e): 0.07

Orbit Range: 0.61 AU - 0.71 AU

Year: 352 Days

Day: 44.8 Hours

Environment

Temp: -129 °C

Axial Tilt: 8.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 35,489,821 km

• M1: 393,293 km (0.099 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.77 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 363.8

Radius: 13

Gravity: 2.15 G

Time & Orbit

Eccentricity (e): 0.105

Orbit Range: 0.69 AU - 0.85 AU

Year: 443 Days

Day: 5.1 Hours

Environment

Temp: -145 °C

Axial Tilt: 3.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 35,489,821 km

• M1: 161,715 km (0.069 R)
• M2: 665,411 km (0.094 R)
• M3: 1,107,473 km (0.113 R)
• M4: 2,081,654 km (0.099 R)
• M5: 3,027,711 km (0.089 R)
• M6: 4,255,311 km (0.102 R)
• M7: 4,791,620 km (0.11 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.92 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 918.7

Radius: 8.5

Gravity: 12.72 G

Time & Orbit

Eccentricity (e): 0.042

Orbit Range: 0.88 AU - 0.96 AU

Year: 579 Days

Day: 14.4 Hours

Environment

Temp: -152 °C

Axial Tilt: 17.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 35,489,821 km

• M1: 105,766 km (0.08 R)
• M2: 383,569 km (0.101 R)
• M3: 700,567 km (0.057 R)
• M4: 1,134,849 km (0.112 R)
• M5: 1,877,154 km (0.069 R)
• M6: 2,288,847 km (0.047 R)
• M7: 3,599,774 km (0.098 R)
• M8: 4,222,699 km (0.062 R)
• M9: 4,584,427 km (0.108 R)
• M10: 5,104,579 km (0.075 R)
• M11: 5,442,371 km (0.027 R)
• M12: 5,929,012 km (0.041 R)
• M13: 6,650,224 km (0.093 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.82 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 912.3

Radius: 11.9

Gravity: 6.44 G

Time & Orbit

Eccentricity (e): 0.215

Orbit Range: 1.43 AU - 2.21 AU

Year: 1611 Days

Day: 10.8 Hours

Environment

Temp: -181 °C

Axial Tilt: 27 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 35,489,821 km

• M1: 147,952 km (0.093 R)
• M2: 718,967 km (0.102 R)
• M3: 1,377,497 km (0.106 R)
• M4: 2,235,740 km (0.094 R)
• M5: 2,863,752 km (0.051 R)
• M6: 3,372,684 km (0.076 R)
• M7: 4,336,244 km (0.038 R)
• M8: 5,659,437 km (0.05 R)
• M9: 6,936,404 km (0.063 R)
• M10: 7,772,357 km (0.036 R)
• M11: 8,396,779 km (0.086 R)
• M12: 9,086,425 km (0.051 R)
• M13: 11,839,774 km (0.108 R)
• M14: 13,239,711 km (0.088 R)
• M15: 15,565,658 km (0.108 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.47 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 174.4

Radius: 11

Gravity: 1.44 G

Time & Orbit

Eccentricity (e): 0.02

Orbit Range: 2.42 AU - 2.52 AU

Year: 2547 Days

Day: 5.8 Hours

Environment

Temp: -188 °C

Axial Tilt: 13.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 35,489,821 km

• M1: 137,181 km (0.078 R)
• M2: 496,366 km (0.094 R)
• M3: 863,778 km (0.1 R)
• M4: 1,737,729 km (0.073 R)
• M5: 2,090,481 km (0.103 R)
• M6: 2,717,595 km (0.072 R)
• M7: 3,111,636 km (0.104 R)
• M8: 3,590,798 km (0.089 R)
• M9: 3,965,092 km (0.071 R)
• M10: 5,908,218 km (0.115 R)
• M11: 8,111,496 km (0.085 R)
• M12: 9,231,385 km (0.039 R)
• M13: 9,688,556 km (0.09 R)
• M14: 10,386,431 km (0.105 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.76 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 937.5

Radius: 10.3

Gravity: 8.84 G

Time & Orbit

Eccentricity (e): 0.07

Orbit Range: 2.57 AU - 2.95 AU

Year: 3008 Days

Day: 6.4 Hours

Environment

Temp: -195 °C

Axial Tilt: 28.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 35,489,821 km

• M1: 130,749 km (0.074 R)
• M2: 452,534 km (0.078 R)
• M3: 776,114 km (0.082 R)
• M4: 1,138,290 km (0.097 R)
• M5: 1,559,558 km (0.109 R)
• M6: 1,952,252 km (0.071 R)
• M7: 2,872,728 km (0.109 R)
• M8: 4,038,694 km (0.118 R)
• M9: 4,552,114 km (0.108 R)
• M10: 4,983,853 km (0.088 R)
• M11: 5,495,478 km (0.119 R)
• M12: 6,534,435 km (0.087 R)
• M13: 6,991,008 km (0.099 R)
• M14: 7,934,521 km (0.098 R)
• M15: 8,313,902 km (0.11 R)
• M16: 8,850,659 km (0.091 R)
• M17: 9,563,642 km (0.076 R)
• M18: 10,153,207 km (0.116 R)
• M19: 10,477,536 km (0.073 R)
• M20: 11,405,042 km (0.098 R)
• M21: 13,568,826 km (0.075 R)
• M22: 17,683,516 km (0.09 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.08 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 372.2

Radius: 10.2

Gravity: 3.58 G

Time & Orbit

Eccentricity (e): 0.229

Orbit Range: 2.37 AU - 3.79 AU

Year: 3546 Days

Day: 12.5 Hours

Environment

Temp: -212 °C

Axial Tilt: 22.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 35,489,821 km

• M1: 132,693 km (0.075 R)
• M2: 514,317 km (0.045 R)
• M3: 1,186,760 km (0.05 R)
• M4: 1,663,977 km (0.094 R)
• M5: 2,334,176 km (0.118 R)
• M6: 2,976,250 km (0.075 R)
• M7: 3,330,647 km (0.085 R)
• M8: 3,964,792 km (0.105 R)
• M9: 5,647,918 km (0.086 R)
• M10: 7,731,517 km (0.118 R)
• M11: 8,876,988 km (0.079 R)
• M12: 9,689,155 km (0.069 R)
• M13: 11,542,673 km (0.1 R)
• M14: 12,082,870 km (0.086 R)
• M15: 12,770,871 km (0.102 R)
• M16: 17,351,259 km (0.044 R)
• M17: 18,227,005 km (0.087 R)

Planet 8 - Gas Giant

Semi-Major Axis: 3.16 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 329.6

Radius: 9.2

Gravity: 3.89 G

Time & Orbit

Eccentricity (e): 0.12

Orbit Range: 2.78 AU - 3.54 AU

Year: 3685 Days

Day: 5.6 Hours

Environment

Temp: -206 °C

Axial Tilt: 23.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 35,489,821 km

• M1: 121,324 km (0.051 R)
• M2: 425,157 km (0.098 R)
• M3: 1,771,688 km (0.069 R)
• M4: 2,660,149 km (0.09 R)
• M5: 3,342,316 km (0.072 R)
• M6: 3,631,339 km (0.057 R)
• M7: 4,197,866 km (0.086 R)
• M8: 6,095,814 km (0.107 R)
• M9: 8,341,128 km (0.114 R)
• M10: 10,618,756 km (0.067 R)
• M11: 11,127,688 km (0.076 R)
• M12: 13,059,595 km (0.066 R)
• M13: 13,827,182 km (0.09 R)
• M14: 14,576,667 km (0.081 R)
• M15: 15,107,440 km (0.033 R)
• M16: 15,751,309 km (0.089 R)
• M17: 18,792,485 km (0.092 R)

Planet 9 - Gas Giant

Semi-Major Axis: 5.15 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 473

Radius: 13.3

Gravity: 2.67 G

Time & Orbit

Eccentricity (e): 0.049

Orbit Range: 4.9 AU - 5.4 AU

Year: 7667 Days

Day: 10 Hours

Environment

Temp: -210 °C

Axial Tilt: 36.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 35,489,821 km

• M1: 170,093 km (0.089 R)
• M2: 629,657 km (0.07 R)
• M3: 1,446,462 km (0.078 R)
• M4: 2,165,579 km (0.039 R)
• M5: 2,954,408 km (0.099 R)
• M6: 3,879,970 km (0.113 R)
• M7: 4,372,447 km (0.066 R)
• M8: 6,638,555 km (0.103 R)
• M9: 7,201,193 km (0.11 R)
• M10: 9,125,021 km (0.042 R)
• M11: 9,556,312 km (0.084 R)
• M12: 13,186,005 km (0.067 R)
• M13: 13,963,764 km (0.107 R)
• M14: 15,428,477 km (0.12 R)
• M15: 16,481,347 km (0.07 R)
• M16: 17,449,844 km (0.057 R)
• M17: 18,183,771 km (0.11 R)
• M18: 19,499,933 km (0.1 R)
• M19: 26,697,236 km (0.078 R)
• M20: 35,278,319 km (0.066 R)

Kuiper Belt

Range: 30 - 54 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 319 - 13,489 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit