🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.44 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.88 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.25

Radius: 0.57

Gravity: 0.77 G

Time & Orbit

Eccentricity (e): 0.062

Orbit Range: 0.83 AU - 0.93 AU

Year: 306 Days

Day: 37.6 Hours

Environment

Temp: 121 °C

Axial Tilt: 1.7 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Satellites (1)

Outer Limit: 61,802,708 km

• M1: 231,129 km (0.11 R)

Planet 2 - Terrestrial

Semi-Major Axis: 1.53 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.31

Radius: 1.61

Gravity: 1.28 G

Time & Orbit

Eccentricity (e): 0.217

Orbit Range: 1.2 AU - 1.86 AU

Year: 702 Days

Day: 25 Hours

Environment

Temp: -39 °C

Axial Tilt: 23.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Terrestrial

Semi-Major Axis: 1.63 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.9

Radius: 1.72

Gravity: 1.32 G

Time & Orbit

Eccentricity (e): 0.124

Orbit Range: 1.43 AU - 1.83 AU

Year: 772 Days

Day: 17.6 Hours

Environment

Temp: -57 °C

Axial Tilt: 6.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 61,802,708 km

• M1: 355,295 km (0.054 R)

Planet 4 - Gas Giant

Semi-Major Axis: 5.02 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 903.5

Radius: 14.5

Gravity: 4.3 G

Time & Orbit

Eccentricity (e): 0.095

Orbit Range: 4.54 AU - 5.5 AU

Year: 4171 Days

Day: 14.7 Hours

Environment

Temp: -141 °C

Axial Tilt: 20.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 61,802,708 km

• M1: 180,265 km (0.102 R)
• M2: 841,338 km (0.102 R)
• M3: 1,409,511 km (0.069 R)
• M4: 2,341,207 km (0.072 R)
• M5: 2,909,529 km (0.112 R)
• M6: 4,901,724 km (0.057 R)
• M7: 5,440,725 km (0.12 R)
• M8: 6,448,715 km (0.102 R)
• M9: 6,931,468 km (0.071 R)
• M10: 8,153,084 km (0.056 R)
• M11: 9,887,073 km (0.11 R)
• M12: 12,782,390 km (0.109 R)
• M13: 14,560,211 km (0.038 R)
• M14: 15,565,808 km (0.109 R)
• M15: 16,144,153 km (0.104 R)
• M16: 17,528,831 km (0.117 R)
• M17: 18,028,638 km (0.046 R)
• M18: 18,538,019 km (0.095 R)
• M19: 19,920,901 km (0.102 R)
• M20: 21,371,552 km (0.029 R)
• M21: 21,942,268 km (0.085 R)
• M22: 23,564,507 km (0.107 R)
• M23: 28,138,312 km (0.043 R)

Planet 5 - Gas Giant

Semi-Major Axis: 6.62 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 514.7

Radius: 15

Gravity: 2.29 G

Time & Orbit

Eccentricity (e): 0.176

Orbit Range: 5.45 AU - 7.79 AU

Year: 6317 Days

Day: 13.1 Hours

Environment

Temp: -151 °C

Axial Tilt: 17.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 61,802,708 km

• M1: 187,297 km (0.116 R)
• M2: 673,041 km (0.1 R)
• M3: 2,635,017 km (0.093 R)
• M4: 5,292,922 km (0.094 R)
• M5: 6,837,371 km (0.061 R)
• M6: 8,314,500 km (0.086 R)
• M7: 9,397,888 km (0.12 R)
• M8: 11,795,942 km (0.111 R)
• M9: 12,492,320 km (0.059 R)
• M10: 13,427,905 km (0.054 R)
• M11: 14,022,257 km (0.119 R)
• M12: 18,291,930 km (0.077 R)
• M13: 19,635,768 km (0.081 R)
• M14: 21,044,680 km (0.034 R)
• M15: 26,006,991 km (0.067 R)
• M16: 29,930,644 km (0.069 R)

Planet 6 - Gas Giant

Semi-Major Axis: 8.59 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 65.2

Radius: 9.1

Gravity: 0.79 G

Time & Orbit

Eccentricity (e): 0.178

Orbit Range: 7.06 AU - 10.12 AU

Year: 9337 Days

Day: 13.1 Hours

Environment

Temp: -168 °C

Axial Tilt: 29.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 61,802,708 km

• M1: 113,096 km (0.051 R)
• M2: 441,912 km (0.073 R)
• M3: 732,581 km (0.1 R)
• M4: 1,091,466 km (0.025 R)
• M5: 1,836,613 km (0.11 R)
• M6: 2,696,801 km (0.109 R)
• M7: 3,087,850 km (0.096 R)
• M8: 3,423,846 km (0.077 R)
• M9: 6,091,177 km (0.106 R)
• M10: 7,650,136 km (0.068 R)
• M11: 8,955,677 km (0.101 R)
• M12: 10,095,014 km (0.071 R)
• M13: 10,521,667 km (0.114 R)
• M14: 12,218,705 km (0.041 R)
• M15: 15,070,340 km (0.078 R)
• M16: 18,798,768 km (0.095 R)
• M17: 19,743,628 km (0.104 R)

Planet 7 - Ice Giant

Semi-Major Axis: 12.63 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 529.9

Radius: 7.5

Gravity: 9.42 G

Time & Orbit

Eccentricity (e): 0.129

Orbit Range: 11 AU - 14.26 AU

Year: 16646 Days

Day: 15.9 Hours

Environment

Temp: -185 °C

Axial Tilt: 12.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (27)

Outer Limit: 61,802,708 km

• M1: 93,349 km (0.095 R)
• M2: 380,727 km (0.083 R)
• M3: 777,610 km (0.118 R)
• M4: 1,281,156 km (0.052 R)
• M5: 2,134,313 km (0.104 R)
• M6: 2,540,172 km (0.097 R)
• M7: 3,399,761 km (0.071 R)
• M8: 3,697,760 km (0.066 R)
• M9: 4,162,411 km (0.027 R)
• M10: 5,791,831 km (0.081 R)
• M11: 6,378,255 km (0.114 R)
• M12: 7,714,762 km (0.062 R)
• M13: 9,918,638 km (0.084 R)
• M14: 13,826,434 km (0.1 R)
• M15: 14,169,162 km (0.091 R)
• M16: 16,269,965 km (0.08 R)
• M17: 17,276,011 km (0.098 R)
• M18: 18,322,747 km (0.063 R)
• M19: 18,987,560 km (0.078 R)
• M20: 27,612,177 km (0.097 R)
• M21: 28,929,386 km (0.103 R)
• M22: 36,148,680 km (0.092 R)
• M23: 38,124,419 km (0.118 R)
• M24: 40,589,193 km (0.119 R)
• M25: 46,749,185 km (0.064 R)
• M26: 56,066,140 km (0.081 R)
• M27: 59,969,897 km (0.046 R)

Kuiper Belt

Range: 30 - 47 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 418 - 11,875 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit