🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.26 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.52 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.03

Radius: 1.33

Gravity: 1.15 G

Time & Orbit

Eccentricity (e): 0.043

Orbit Range: 0.5 AU - 0.54 AU

Year: 242 Days

Day: 16 Hours

Environment

Temp: -127 °C

Axial Tilt: 42.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.64 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.1

Radius: 1.57

Gravity: 1.26 G

Time & Orbit

Eccentricity (e): 0.071

Orbit Range: 0.59 AU - 0.69 AU

Year: 331 Days

Day: 31.2 Hours

Environment

Temp: -138 °C

Axial Tilt: 46.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.8 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 287.2

Radius: 8.9

Gravity: 3.63 G

Time & Orbit

Eccentricity (e): 0.212

Orbit Range: 0.63 AU - 0.97 AU

Year: 462 Days

Day: 9.8 Hours

Environment

Temp: -139 °C

Axial Tilt: 38.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 44,175,762 km

• M1: 110,702 km (0.097 R)
• M2: 416,929 km (0.079 R)
• M3: 869,014 km (0.088 R)
• M4: 1,497,325 km (0.08 R)
• M5: 1,835,865 km (0.097 R)
• M6: 2,299,918 km (0.103 R)
• M7: 2,928,678 km (0.087 R)
• M8: 3,246,423 km (0.073 R)
• M9: 3,784,078 km (0.092 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.66 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 230.5

Radius: 8.3

Gravity: 3.35 G

Time & Orbit

Eccentricity (e): 0.192

Orbit Range: 1.34 AU - 1.98 AU

Year: 1381 Days

Day: 7.8 Hours

Environment

Temp: -186 °C

Axial Tilt: 13.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 44,175,762 km

• M1: 103,372 km (0.105 R)
• M2: 386,262 km (0.096 R)
• M3: 658,231 km (0.119 R)
• M4: 921,672 km (0.102 R)
• M5: 1,284,896 km (0.109 R)
• M6: 1,560,007 km (0.113 R)
• M7: 2,400,298 km (0.109 R)
• M8: 2,703,982 km (0.112 R)
• M9: 3,045,962 km (0.095 R)
• M10: 3,714,366 km (0.048 R)
• M11: 4,477,015 km (0.09 R)
• M12: 4,799,399 km (0.046 R)
• M13: 5,396,294 km (0.119 R)
• M14: 6,226,563 km (0.103 R)
• M15: 6,803,562 km (0.054 R)
• M16: 7,230,663 km (0.102 R)
• M17: 7,771,460 km (0.118 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.67 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 909

Radius: 13.8

Gravity: 4.77 G

Time & Orbit

Eccentricity (e): 0.014

Orbit Range: 1.65 AU - 1.69 AU

Year: 1393 Days

Day: 9.9 Hours

Environment

Temp: -172 °C

Axial Tilt: 15.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 44,175,762 km

• M1: 222,751 km (0.051 R)
• M2: 1,086,978 km (0.057 R)
• M3: 1,708,707 km (0.103 R)
• M4: 2,680,794 km (0.082 R)
• M5: 3,361,763 km (0.106 R)
• M6: 4,229,132 km (0.089 R)
• M7: 5,051,471 km (0.114 R)
• M8: 6,048,242 km (0.098 R)
• M9: 6,531,742 km (0.077 R)
• M10: 7,145,991 km (0.119 R)
• M11: 7,631,885 km (0.105 R)
• M12: 9,318,003 km (0.099 R)
• M13: 12,238,602 km (0.1 R)
• M14: 13,578,251 km (0.106 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.82 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 132.3

Radius: 12.7

Gravity: 0.82 G

Time & Orbit

Eccentricity (e): 0.03

Orbit Range: 1.77 AU - 1.87 AU

Year: 1585 Days

Day: 5.9 Hours

Environment

Temp: -184 °C

Axial Tilt: 34.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 44,175,762 km

• M1: 157,975 km (0.059 R)
• M2: 637,287 km (0.078 R)
• M3: 1,336,059 km (0.085 R)
• M4: 1,876,855 km (0.086 R)
• M5: 2,572,934 km (0.109 R)
• M6: 3,623,859 km (0.049 R)
• M7: 4,513,667 km (0.071 R)
• M8: 5,131,955 km (0.05 R)
• M9: 6,234,342 km (0.084 R)
• M10: 6,725,621 km (0.091 R)
• M11: 7,625,003 km (0.044 R)

Planet 7 - Gas Giant

Semi-Major Axis: 5.17 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 875.6

Radius: 10.3

Gravity: 8.25 G

Time & Orbit

Eccentricity (e): 0.175

Orbit Range: 4.27 AU - 6.07 AU

Year: 7590 Days

Day: 9.5 Hours

Environment

Temp: -215 °C

Axial Tilt: 32.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (27)

Outer Limit: 44,175,762 km

• M1: 133,890 km (0.102 R)
• M2: 483,800 km (0.114 R)
• M3: 860,637 km (0.113 R)
• M4: 1,489,845 km (0.036 R)
• M5: 1,854,415 km (0.106 R)
• M6: 3,016,342 km (0.084 R)
• M7: 3,394,525 km (0.067 R)
• M8: 4,666,257 km (0.069 R)
• M9: 5,299,355 km (0.039 R)
• M10: 5,920,485 km (0.047 R)
• M11: 6,553,135 km (0.098 R)
• M12: 7,386,993 km (0.107 R)
• M13: 9,127,564 km (0.083 R)
• M14: 11,335,779 km (0.097 R)
• M15: 12,877,086 km (0.043 R)
• M16: 14,994,494 km (0.119 R)
• M17: 15,639,859 km (0.036 R)
• M18: 16,506,330 km (0.059 R)
• M19: 18,554,325 km (0.035 R)
• M20: 23,663,242 km (0.101 R)
• M21: 29,739,458 km (0.11 R)
• M22: 31,380,397 km (0.081 R)
• M23: 34,953,842 km (0.106 R)
• M24: 35,291,634 km (0.083 R)
• M25: 36,318,025 km (0.026 R)
• M26: 38,430,197 km (0.113 R)
• M27: 41,121,313 km (0.084 R)

Planet 8 - Gas Giant

Semi-Major Axis: 5.38 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 676.2

Radius: 13.4

Gravity: 3.77 G

Time & Orbit

Eccentricity (e): 0.064

Orbit Range: 5.04 AU - 5.72 AU

Year: 8057 Days

Day: 8.8 Hours

Environment

Temp: -214 °C

Axial Tilt: 6.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 44,175,762 km

• M1: 167,699 km (0.093 R)
• M2: 616,942 km (0.101 R)
• M3: 1,149,809 km (0.087 R)
• M4: 1,566,589 km (0.092 R)
• M5: 2,135,360 km (0.094 R)
• M6: 2,552,289 km (0.102 R)
• M7: 3,108,494 km (0.111 R)
• M8: 5,098,445 km (0.093 R)
• M9: 6,792,791 km (0.114 R)
• M10: 7,991,369 km (0.094 R)
• M11: 9,601,191 km (0.088 R)
• M12: 10,409,469 km (0.103 R)
• M13: 10,905,834 km (0.034 R)
• M14: 12,435,323 km (0.095 R)
• M15: 13,805,639 km (0.116 R)
• M16: 15,085,449 km (0.072 R)
• M17: 15,786,615 km (0.066 R)
• M18: 17,950,697 km (0.096 R)
• M19: 20,382,710 km (0.035 R)
• M20: 20,847,510 km (0.118 R)
• M21: 29,280,492 km (0.046 R)
• M22: 29,972,083 km (0.116 R)

Planet 9 - Ice Giant

Semi-Major Axis: 6.99 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 376.6

Radius: 5.6

Gravity: 12.01 G

Time & Orbit

Eccentricity (e): 0.11

Orbit Range: 6.22 AU - 7.76 AU

Year: 11932 Days

Day: 22.4 Hours

Environment

Temp: -216 °C

Axial Tilt: 9.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (33)

Outer Limit: 44,175,762 km

• M1: 69,713 km (0.099 R)
• M2: 250,277 km (0.071 R)
• M3: 508,034 km (0.094 R)
• M4: 742,454 km (0.104 R)
• M5: 1,090,718 km (0.051 R)
• M6: 1,542,204 km (0.028 R)
• M7: 2,626,041 km (0.081 R)
• M8: 3,199,300 km (0.11 R)
• M9: 3,852,444 km (0.093 R)
• M10: 4,115,737 km (0.077 R)
• M11: 4,390,847 km (0.069 R)
• M12: 4,766,787 km (0.118 R)
• M13: 5,163,969 km (0.098 R)
• M14: 5,682,774 km (0.109 R)
• M15: 7,288,408 km (0.118 R)
• M16: 7,815,442 km (0.097 R)
• M17: 8,024,729 km (0.038 R)
• M18: 9,313,664 km (0.082 R)
• M19: 10,080,952 km (0.102 R)
• M20: 10,329,135 km (0.099 R)
• M21: 13,098,939 km (0.045 R)
• M22: 13,574,212 km (0.078 R)
• M23: 13,999,219 km (0.086 R)
• M24: 16,327,261 km (0.07 R)
• M25: 17,157,230 km (0.08 R)
• M26: 18,826,144 km (0.05 R)
• M27: 19,893,375 km (0.087 R)
• M28: 24,388,342 km (0.083 R)
• M29: 27,733,949 km (0.105 R)
• M30: 28,123,652 km (0.088 R)
• M31: 34,639,088 km (0.102 R)
• M32: 39,336,311 km (0.114 R)
• M33: 42,477,867 km (0.104 R)

Kuiper Belt

Range: 30 - 46 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 528 - 14,005 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit