🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.3 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Gas Giant

Semi-Major Axis: 0.6 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 825.6

Radius: 14.8

Gravity: 3.77 G

Time & Orbit

Eccentricity (e): 0.057

Orbit Range: 0.57 AU - 0.63 AU

Year: 315 Days

Day: 6.7 Hours

Environment

Temp: -149 °C

Axial Tilt: 16.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 18,694,945 km

• M1: 184,155 km (0.094 R)
• M2: 674,238 km (0.061 R)
• M3: 1,186,610 km (0.119 R)
• M4: 1,672,953 km (0.105 R)
• M5: 2,262,069 km (0.103 R)
• M6: 2,752,900 km (0.087 R)
• M7: 3,348,449 km (0.113 R)
• M8: 4,207,291 km (0.041 R)
• M9: 4,930,147 km (0.042 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.84 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 485.7

Radius: 10.7

Gravity: 4.24 G

Time & Orbit

Eccentricity (e): 0.119

Orbit Range: 0.74 AU - 0.94 AU

Year: 522 Days

Day: 6.6 Hours

Environment

Temp: -175 °C

Axial Tilt: 149.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 18,694,945 km

• M1: 135,087 km (0.12 R)
• M2: 754,871 km (0.078 R)
• M3: 1,088,624 km (0.091 R)
• M4: 1,642,136 km (0.054 R)
• M5: 2,196,246 km (0.097 R)
• M6: 2,685,731 km (0.102 R)
• M7: 3,305,215 km (0.084 R)
• M8: 3,680,556 km (0.099 R)
• M9: 4,098,084 km (0.11 R)
• M10: 4,547,027 km (0.041 R)
• M11: 4,905,165 km (0.082 R)
• M12: 5,249,988 km (0.114 R)
• M13: 5,594,362 km (0.09 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.99 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 284.6

Radius: 9.8

Gravity: 2.96 G

Time & Orbit

Eccentricity (e): 0.011

Orbit Range: 0.98 AU - 1 AU

Year: 668 Days

Day: 6.1 Hours

Environment

Temp: -172 °C

Axial Tilt: 19.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 18,694,945 km

• M1: 121,922 km (0.103 R)
• M2: 435,779 km (0.031 R)
• M3: 763,697 km (0.063 R)
• M4: 1,151,006 km (0.104 R)
• M5: 1,633,758 km (0.049 R)
• M6: 2,074,623 km (0.087 R)
• M7: 2,421,242 km (0.089 R)
• M8: 2,879,759 km (0.114 R)
• M9: 3,443,294 km (0.027 R)
• M10: 4,038,694 km (0.113 R)
• M11: 4,671,493 km (0.12 R)
• M12: 5,082,139 km (0.115 R)
• M13: 5,549,931 km (0.109 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.05 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 716.1

Radius: 13.5

Gravity: 3.93 G

Time & Orbit

Eccentricity (e): 0.043

Orbit Range: 1 AU - 1.1 AU

Year: 730 Days

Day: 8.3 Hours

Environment

Temp: -172 °C

Axial Tilt: 6.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 18,694,945 km

• M1: 167,849 km (0.038 R)
• M2: 834,607 km (0.07 R)
• M3: 1,486,404 km (0.112 R)
• M4: 2,030,342 km (0.072 R)
• M5: 3,048,805 km (0.077 R)
• M6: 3,999,349 km (0.098 R)
• M7: 4,998,514 km (0.07 R)
• M8: 7,285,117 km (0.113 R)
• M9: 7,768,019 km (0.108 R)
• M10: 8,420,565 km (0.112 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.77 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 508

Radius: 9.8

Gravity: 5.29 G

Time & Orbit

Eccentricity (e): 0.188

Orbit Range: 1.44 AU - 2.1 AU

Year: 1597 Days

Day: 5.6 Hours

Environment

Temp: -206 °C

Axial Tilt: 48.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 18,694,945 km

• M1: 121,922 km (0.071 R)
• M2: 427,252 km (0.078 R)
• M3: 752,328 km (0.071 R)
• M4: 1,402,031 km (0.119 R)
• M5: 2,706,824 km (0.071 R)
• M6: 3,021,578 km (0.084 R)
• M7: 3,438,058 km (0.118 R)
• M8: 3,995,161 km (0.063 R)
• M9: 4,350,306 km (0.116 R)
• M10: 5,268,837 km (0.097 R)
• M11: 5,674,995 km (0.074 R)
• M12: 6,033,133 km (0.094 R)
• M13: 6,550,292 km (0.111 R)
• M14: 7,147,936 km (0.064 R)
• M15: 7,973,118 km (0.115 R)
• M16: 9,908,316 km (0.064 R)
• M17: 10,329,883 km (0.105 R)
• M18: 10,729,758 km (0.086 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.17 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 884.1

Radius: 12.9

Gravity: 5.31 G

Time & Orbit

Eccentricity (e): 0.142

Orbit Range: 1.86 AU - 2.48 AU

Year: 2168 Days

Day: 11.7 Hours

Environment

Temp: -196 °C

Axial Tilt: 6.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 18,694,945 km

• M1: 163,959 km (0.053 R)
• M2: 1,114,055 km (0.106 R)
• M3: 1,740,422 km (0.068 R)
• M4: 2,398,054 km (0.091 R)
• M5: 2,847,296 km (0.043 R)
• M6: 3,841,823 km (0.118 R)
• M7: 4,763,495 km (0.073 R)
• M8: 5,194,786 km (0.078 R)
• M9: 5,980,474 km (0.117 R)
• M10: 6,957,797 km (0.104 R)
• M11: 8,007,076 km (0.052 R)
• M12: 9,263,100 km (0.107 R)
• M13: 10,494,440 km (0.097 R)
• M14: 11,110,484 km (0.105 R)
• M15: 13,910,508 km (0.112 R)
• M16: 14,465,964 km (0.102 R)
• M17: 15,770,159 km (0.058 R)
• M18: 17,898,338 km (0.094 R)

Planet 7 - Gas Giant

Semi-Major Axis: 2.18 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 595.8

Radius: 10.7

Gravity: 5.2 G

Time & Orbit

Eccentricity (e): 0.055

Orbit Range: 2.06 AU - 2.3 AU

Year: 2183 Days

Day: 9.6 Hours

Environment

Temp: -201 °C

Axial Tilt: 39.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 18,694,945 km

• M1: 133,142 km (0.054 R)
• M2: 486,642 km (0.032 R)
• M3: 881,730 km (0.103 R)
• M4: 1,300,753 km (0.066 R)
• M5: 1,798,316 km (0.074 R)
• M6: 2,252,346 km (0.045 R)
• M7: 2,811,692 km (0.116 R)
• M8: 3,530,061 km (0.102 R)
• M9: 4,208,786 km (0.067 R)
• M10: 5,261,806 km (0.077 R)
• M11: 5,609,771 km (0.103 R)
• M12: 7,471,516 km (0.119 R)
• M13: 8,846,021 km (0.116 R)
• M14: 9,886,624 km (0.09 R)
• M15: 10,418,445 km (0.054 R)
• M16: 13,072,909 km (0.096 R)
• M17: 13,932,349 km (0.111 R)

Planet 8 - Gas Giant

Semi-Major Axis: 2.91 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 101.5

Radius: 10.4

Gravity: 0.94 G

Time & Orbit

Eccentricity (e): 0.058

Orbit Range: 2.74 AU - 3.08 AU

Year: 3367 Days

Day: 5.9 Hours

Environment

Temp: -220 °C

Axial Tilt: 5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 18,694,945 km

• M1: 129,402 km (0.106 R)
• M2: 494,720 km (0.116 R)
• M3: 844,330 km (0.108 R)
• M4: 1,684,322 km (0.103 R)
• M5: 2,074,025 km (0.039 R)
• M6: 2,792,543 km (0.111 R)
• M7: 3,717,507 km (0.117 R)
• M8: 4,681,815 km (0.103 R)
• M9: 6,608,336 km (0.097 R)
• M10: 7,099,616 km (0.094 R)
• M11: 7,801,379 km (0.095 R)
• M12: 9,711,445 km (0.117 R)
• M13: 10,057,764 km (0.083 R)
• M14: 11,631,534 km (0.113 R)

Planet 9 - Ice Giant

Semi-Major Axis: 6.29 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 35.5

Radius: 5.2

Gravity: 1.31 G

Time & Orbit

Eccentricity (e): 0.17

Orbit Range: 5.22 AU - 7.36 AU

Year: 10700 Days

Day: 15.4 Hours

Environment

Temp: -227 °C

Axial Tilt: 37.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 18,694,945 km

• M1: 68,366 km (0.034 R)
• M2: 423,212 km (0.072 R)
• M3: 963,111 km (0.102 R)
• M4: 1,358,049 km (0.075 R)
• M5: 1,739,823 km (0.117 R)
• M6: 1,986,660 km (0.077 R)
• M7: 2,435,603 km (0.075 R)
• M8: 3,371,637 km (0.057 R)
• M9: 3,890,891 km (0.119 R)
• M10: 5,040,700 km (0.114 R)
• M11: 5,252,232 km (0.115 R)
• M12: 5,420,828 km (0.083 R)
• M13: 6,732,652 km (0.107 R)
• M14: 10,450,010 km (0.085 R)
• M15: 11,067,550 km (0.045 R)
• M16: 11,791,005 km (0.101 R)
• M17: 11,997,450 km (0.116 R)
• M18: 12,164,252 km (0.079 R)
• M19: 13,646,168 km (0.115 R)
• M20: 14,243,213 km (0.096 R)
• M21: 18,141,584 km (0.051 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: 420 - 14,510 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit