🌌 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 - Terrestrial

Semi-Major Axis: 0.59 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.89

Radius: 1.89

Gravity: 1.37 G

Time & Orbit

Eccentricity (e): 0.18

Orbit Range: 0.48 AU - 0.7 AU

Year: 297 Days

Day: 34 Hours

Environment

Temp: -124 °C

Axial Tilt: 46.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.78 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 648.5

Radius: 13.6

Gravity: 3.51 G

Time & Orbit

Eccentricity (e): 0.121

Orbit Range: 0.69 AU - 0.87 AU

Year: 452 Days

Day: 12.6 Hours

Environment

Temp: -145 °C

Axial Tilt: 38.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 22,927,018 km

• M1: 169,195 km (0.114 R)
• M2: 592,856 km (0.059 R)
• M3: 1,123,929 km (0.115 R)
• M4: 1,626,877 km (0.08 R)
• M5: 2,435,603 km (0.096 R)
• M6: 2,943,787 km (0.096 R)
• M7: 3,859,625 km (0.056 R)
• M8: 4,301,088 km (0.042 R)
• M9: 5,019,158 km (0.112 R)
• M10: 5,546,939 km (0.089 R)

Asteroid Belt

Center: 1.11 AU

Composition

Type: Outer System (Icy)

A dense region of planetesimals and debris.

Boundary

Planet 3 - Gas Giant

Semi-Major Axis: 1.44 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 978.3

Radius: 11.3

Gravity: 7.66 G

Time & Orbit

Eccentricity (e): 0.044

Orbit Range: 1.38 AU - 1.5 AU

Year: 1134 Days

Day: 10.8 Hours

Environment

Temp: -177 °C

Axial Tilt: 46.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 22,927,018 km

• M1: 140,472 km (0.107 R)
• M2: 509,381 km (0.091 R)
• M3: 922,869 km (0.104 R)
• M4: 1,438,683 km (0.119 R)
• M5: 2,289,446 km (0.089 R)
• M6: 2,721,484 km (0.074 R)
• M7: 3,511,062 km (0.094 R)
• M8: 4,019,994 km (0.1 R)
• M9: 4,768,432 km (0.098 R)
• M10: 5,628,919 km (0.12 R)
• M11: 6,165,527 km (0.119 R)
• M12: 6,566,000 km (0.072 R)
• M13: 7,008,959 km (0.111 R)
• M14: 8,120,771 km (0.094 R)
• M15: 8,895,389 km (0.076 R)
• M16: 9,844,587 km (0.114 R)
• M17: 10,792,589 km (0.087 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.45 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 876.2

Radius: 12.9

Gravity: 5.27 G

Time & Orbit

Eccentricity (e): 0.087

Orbit Range: 1.32 AU - 1.58 AU

Year: 1145 Days

Day: 5.1 Hours

Environment

Temp: -182 °C

Axial Tilt: 8.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 22,927,018 km

• M1: 160,369 km (0.1 R)
• M2: 576,251 km (0.111 R)
• M3: 1,083,687 km (0.049 R)
• M4: 1,542,204 km (0.085 R)
• M5: 2,208,663 km (0.095 R)
• M6: 2,635,316 km (0.108 R)
• M7: 3,786,771 km (0.087 R)
• M8: 4,368,258 km (0.089 R)
• M9: 5,603,936 km (0.105 R)
• M10: 6,041,660 km (0.112 R)
• M11: 6,596,967 km (0.12 R)
• M12: 7,364,554 km (0.058 R)
• M13: 8,612,649 km (0.107 R)
• M14: 9,078,347 km (0.052 R)
• M15: 9,653,102 km (0.062 R)
• M16: 10,775,684 km (0.098 R)
• M17: 11,841,120 km (0.115 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.72 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 914.7

Radius: 14.8

Gravity: 4.18 G

Time & Orbit

Eccentricity (e): 0.215

Orbit Range: 1.35 AU - 2.09 AU

Year: 1480 Days

Day: 10.5 Hours

Environment

Temp: -186 °C

Axial Tilt: 19.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 22,927,018 km

• M1: 184,005 km (0.111 R)
• M2: 657,483 km (0.083 R)
• M3: 1,272,180 km (0.056 R)
• M4: 1,776,774 km (0.07 R)
• M5: 2,597,169 km (0.068 R)
• M6: 4,850,861 km (0.104 R)
• M7: 5,403,475 km (0.063 R)
• M8: 6,311,684 km (0.086 R)
• M9: 7,594,785 km (0.118 R)
• M10: 8,136,778 km (0.028 R)
• M11: 8,889,405 km (0.041 R)
• M12: 9,395,195 km (0.113 R)
• M13: 9,886,774 km (0.1 R)
• M14: 12,257,900 km (0.103 R)
• M15: 12,726,740 km (0.119 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.96 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 175

Radius: 13

Gravity: 1.04 G

Time & Orbit

Eccentricity (e): 0.235

Orbit Range: 1.5 AU - 2.42 AU

Year: 1800 Days

Day: 9.9 Hours

Environment

Temp: -195 °C

Axial Tilt: 29.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 22,927,018 km

• M1: 162,314 km (0.087 R)
• M2: 680,670 km (0.064 R)
• M3: 1,222,813 km (0.116 R)
• M4: 1,629,869 km (0.088 R)
• M5: 2,241,874 km (0.054 R)
• M6: 3,120,163 km (0.086 R)
• M7: 4,072,503 km (0.092 R)
• M8: 5,633,257 km (0.068 R)
• M9: 6,037,920 km (0.11 R)
• M10: 6,815,679 km (0.118 R)
• M11: 7,610,492 km (0.097 R)
• M12: 8,650,198 km (0.079 R)
• M13: 9,108,266 km (0.073 R)

Planet 7 - Gas Giant

Semi-Major Axis: 2.05 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 254.1

Radius: 9.6

Gravity: 2.76 G

Time & Orbit

Eccentricity (e): 0.221

Orbit Range: 1.6 AU - 2.5 AU

Year: 1925 Days

Day: 12.3 Hours

Environment

Temp: -186 °C

Axial Tilt: 36.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 22,927,018 km

• M1: 119,379 km (0.06 R)
• M2: 562,189 km (0.106 R)
• M3: 902,674 km (0.073 R)
• M4: 1,269,488 km (0.116 R)
• M5: 1,591,721 km (0.098 R)
• M6: 2,041,263 km (0.084 R)
• M7: 2,348,238 km (0.11 R)
• M8: 3,197,355 km (0.04 R)
• M9: 4,273,562 km (0.037 R)
• M10: 5,409,459 km (0.111 R)
• M11: 7,398,512 km (0.098 R)
• M12: 8,911,396 km (0.09 R)
• M13: 9,468,648 km (0.073 R)

Planet 8 - Gas Giant

Semi-Major Axis: 2.99 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 312.6

Radius: 13.9

Gravity: 1.62 G

Time & Orbit

Eccentricity (e): 0.01

Orbit Range: 2.96 AU - 3.02 AU

Year: 3392 Days

Day: 14.5 Hours

Environment

Temp: -201 °C

Axial Tilt: 43.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 22,927,018 km

• M1: 172,935 km (0.065 R)
• M2: 728,392 km (0.106 R)
• M3: 1,260,063 km (0.115 R)
• M4: 1,760,468 km (0.12 R)
• M5: 2,544,660 km (0.103 R)
• M6: 3,993,066 km (0.1 R)
• M7: 5,986,757 km (0.045 R)
• M8: 8,006,478 km (0.077 R)
• M9: 9,003,249 km (0.053 R)
• M10: 17,159,773 km (0.119 R)
• M11: 17,894,448 km (0.067 R)

Planet 9 - Gas Giant

Semi-Major Axis: 3.23 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 516.9

Radius: 9.1

Gravity: 6.24 G

Time & Orbit

Eccentricity (e): 0.105

Orbit Range: 2.89 AU - 3.57 AU

Year: 3808 Days

Day: 14.5 Hours

Environment

Temp: -203 °C

Axial Tilt: 38.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 22,927,018 km

• M1: 114,293 km (0.106 R)
• M2: 457,021 km (0.072 R)
• M3: 1,384,827 km (0.092 R)
• M4: 1,767,499 km (0.08 R)
• M5: 2,731,956 km (0.098 R)
• M6: 3,086,354 km (0.113 R)
• M7: 3,395,572 km (0.058 R)
• M8: 5,899,542 km (0.077 R)
• M9: 6,701,985 km (0.098 R)
• M10: 7,129,535 km (0.06 R)
• M11: 8,347,711 km (0.08 R)
• M12: 12,876,936 km (0.074 R)
• M13: 13,975,882 km (0.114 R)
• M14: 16,468,781 km (0.117 R)
• M15: 18,169,260 km (0.062 R)

Kuiper Belt

Range: 30 - 51 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 547 - 18,753 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit