🌌 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: 2.78

Radius: 1.51

Gravity: 1.22 G

Time & Orbit

Eccentricity (e): 0.147

Orbit Range: 0.5 AU - 0.68 AU

Year: 293 Days

Day: 47.5 Hours

Environment

Temp: -135 °C

Axial Tilt: 7.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.65 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.18

Radius: 1.77

Gravity: 1.33 G

Time & Orbit

Eccentricity (e): 0.209

Orbit Range: 0.51 AU - 0.79 AU

Year: 338 Days

Day: 34.6 Hours

Environment

Temp: -141 °C

Axial Tilt: 45.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.78 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 562.6

Radius: 11.5

Gravity: 4.25 G

Time & Orbit

Eccentricity (e): 0.159

Orbit Range: 0.66 AU - 0.9 AU

Year: 445 Days

Day: 9.2 Hours

Environment

Temp: -155 °C

Axial Tilt: 20.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 42,298,827 km

• M1: 143,016 km (0.09 R)
• M2: 579,692 km (0.109 R)
• M3: 974,630 km (0.088 R)
• M4: 1,383,481 km (0.094 R)
• M5: 2,244,566 km (0.063 R)
• M6: 2,670,023 km (0.103 R)
• M7: 3,272,005 km (0.094 R)
• M8: 3,710,027 km (0.082 R)
• M9: 4,227,486 km (0.117 R)
• M10: 4,941,666 km (0.101 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.2 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 259.7

Radius: 9.8

Gravity: 2.7 G

Time & Orbit

Eccentricity (e): 0.087

Orbit Range: 1.1 AU - 1.3 AU

Year: 849 Days

Day: 10.7 Hours

Environment

Temp: -175 °C

Axial Tilt: 41.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 42,298,827 km

• M1: 124,166 km (0.096 R)
• M2: 524,191 km (0.118 R)
• M3: 831,315 km (0.097 R)
• M4: 1,140,534 km (0.042 R)
• M5: 1,682,078 km (0.088 R)
• M6: 2,082,702 km (0.086 R)
• M7: 2,809,298 km (0.112 R)
• M8: 3,255,698 km (0.116 R)
• M9: 3,669,935 km (0.066 R)
• M10: 4,119,177 km (0.098 R)
• M11: 4,949,446 km (0.11 R)
• M12: 5,673,350 km (0.112 R)
• M13: 6,125,734 km (0.083 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.86 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 765.1

Radius: 11

Gravity: 6.32 G

Time & Orbit

Eccentricity (e): 0.087

Orbit Range: 1.7 AU - 2.02 AU

Year: 1638 Days

Day: 7.5 Hours

Environment

Temp: -183 °C

Axial Tilt: 24.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 42,298,827 km

• M1: 136,732 km (0.082 R)
• M2: 802,293 km (0.114 R)
• M3: 1,410,558 km (0.089 R)
• M4: 1,851,124 km (0.109 R)
• M5: 2,741,231 km (0.069 R)
• M6: 3,307,160 km (0.029 R)
• M7: 3,807,715 km (0.1 R)
• M8: 4,474,772 km (0.091 R)
• M9: 5,110,114 km (0.029 R)
• M10: 5,922,580 km (0.036 R)
• M11: 7,003,125 km (0.084 R)
• M12: 8,240,300 km (0.093 R)
• M13: 10,465,867 km (0.113 R)
• M14: 10,890,276 km (0.111 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.67 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 261.6

Radius: 10.6

Gravity: 2.33 G

Time & Orbit

Eccentricity (e): 0.19

Orbit Range: 2.16 AU - 3.18 AU

Year: 2817 Days

Day: 8.4 Hours

Environment

Temp: -191 °C

Axial Tilt: 37.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 42,298,827 km

• M1: 133,441 km (0.042 R)
• M2: 496,815 km (0.055 R)
• M3: 846,126 km (0.118 R)
• M4: 1,481,617 km (0.049 R)
• M5: 2,324,601 km (0.086 R)
• M6: 2,677,802 km (0.095 R)
• M7: 3,713,468 km (0.11 R)
• M8: 4,507,533 km (0.077 R)
• M9: 6,306,149 km (0.11 R)
• M10: 7,658,962 km (0.112 R)
• M11: 9,228,393 km (0.065 R)
• M12: 9,718,626 km (0.03 R)
• M13: 10,329,583 km (0.089 R)
• M14: 10,929,920 km (0.118 R)
• M15: 11,590,993 km (0.059 R)
• M16: 12,552,907 km (0.054 R)
• M17: 13,608,918 km (0.101 R)
• M18: 14,115,756 km (0.047 R)

Planet 7 - Gas Giant

Semi-Major Axis: 2.89 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 474

Radius: 13.2

Gravity: 2.72 G

Time & Orbit

Eccentricity (e): 0.109

Orbit Range: 2.57 AU - 3.21 AU

Year: 3172 Days

Day: 11.6 Hours

Environment

Temp: -206 °C

Axial Tilt: 31 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 42,298,827 km

• M1: 166,054 km (0.113 R)
• M2: 666,159 km (0.068 R)
• M3: 1,796,222 km (0.079 R)
• M4: 2,207,466 km (0.104 R)
• M5: 3,507,322 km (0.053 R)
• M6: 4,516,210 km (0.106 R)
• M7: 5,609,322 km (0.09 R)
• M8: 6,394,860 km (0.077 R)
• M9: 7,463,288 km (0.091 R)
• M10: 9,480,167 km (0.072 R)
• M11: 10,064,496 km (0.109 R)
• M12: 11,672,374 km (0.077 R)
• M13: 12,997,362 km (0.057 R)
• M14: 13,536,363 km (0.051 R)
• M15: 14,136,999 km (0.11 R)
• M16: 16,303,326 km (0.066 R)
• M17: 17,682,917 km (0.115 R)
• M18: 19,081,657 km (0.104 R)

Planet 8 - Ice Giant

Semi-Major Axis: 8.12 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 210.9

Radius: 5.5

Gravity: 6.97 G

Time & Orbit

Eccentricity (e): 0.112

Orbit Range: 7.21 AU - 9.03 AU

Year: 14940 Days

Day: 22.6 Hours

Environment

Temp: -231 °C

Axial Tilt: 25.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (31)

Outer Limit: 42,298,827 km

• M1: 70,760 km (0.1 R)
• M2: 247,884 km (0.077 R)
• M3: 845,378 km (0.104 R)
• M4: 1,351,018 km (0.065 R)
• M5: 1,832,873 km (0.047 R)
• M6: 2,088,386 km (0.089 R)
• M7: 4,565,727 km (0.082 R)
• M8: 6,040,612 km (0.118 R)
• M9: 6,462,927 km (0.041 R)
• M10: 7,524,474 km (0.12 R)
• M11: 8,830,164 km (0.085 R)
• M12: 10,728,860 km (0.11 R)
• M13: 11,827,208 km (0.093 R)
• M14: 13,172,093 km (0.037 R)
• M15: 14,367,978 km (0.115 R)
• M16: 15,504,772 km (0.092 R)
• M17: 16,632,142 km (0.096 R)
• M18: 17,955,784 km (0.101 R)
• M19: 20,108,946 km (0.089 R)
• M20: 21,127,707 km (0.07 R)
• M21: 24,920,163 km (0.027 R)
• M22: 25,098,484 km (0.107 R)
• M23: 27,211,404 km (0.106 R)
• M24: 27,400,496 km (0.097 R)
• M25: 28,749,270 km (0.077 R)
• M26: 32,102,357 km (0.091 R)
• M27: 33,927,301 km (0.079 R)
• M28: 34,146,462 km (0.08 R)
• M29: 34,366,520 km (0.082 R)
• M30: 35,707,067 km (0.095 R)
• M31: 41,044,569 km (0.077 R)

Kuiper Belt

Range: 30 - 53 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 458 - 12,448 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit