🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.3 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.6 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.71

Radius: 1.24

Gravity: 1.11 G

Time & Orbit

Eccentricity (e): 0.222

Orbit Range: 0.47 AU - 0.73 AU

Year: 171 Days

Day: 46.6 Hours

Environment

Temp: 155 °C

Axial Tilt: 38.2 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 0.96 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.43

Radius: 1.64

Gravity: 1.28 G

Time & Orbit

Eccentricity (e): 0.239

Orbit Range: 0.73 AU - 1.19 AU

Year: 345 Days

Day: 14.1 Hours

Environment

Temp: 36 °C

Axial Tilt: 13.3 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Planet 3 - Terrestrial

Semi-Major Axis: 1.16 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.54

Radius: 1.83

Gravity: 1.36 G

Time & Orbit

Eccentricity (e): 0.086

Orbit Range: 1.06 AU - 1.26 AU

Year: 459 Days

Day: 46.3 Hours

Environment

Temp: 18 °C

Axial Tilt: 12 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Satellites (1)

Outer Limit: 50,380,726 km

• M1: 48,171 km (0.071 R)

Planet 4 - Terrestrial

Semi-Major Axis: 1.21 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.39

Radius: 1.14

Gravity: 1.07 G

Time & Orbit

Eccentricity (e): 0.112

Orbit Range: 1.07 AU - 1.35 AU

Year: 489 Days

Day: 46.5 Hours

Environment

Temp: 9 °C

Axial Tilt: 5.5 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Planet 5 - Gas Giant

Semi-Major Axis: 6.19 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 258.3

Radius: 8.6

Gravity: 3.49 G

Time & Orbit

Eccentricity (e): 0.127

Orbit Range: 5.4 AU - 6.98 AU

Year: 5653 Days

Day: 10.5 Hours

Environment

Temp: -149 °C

Axial Tilt: 39.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 50,380,726 km

• M1: 107,262 km (0.099 R)
• M2: 397,482 km (0.099 R)
• M3: 872,006 km (0.081 R)
• M4: 1,225,057 km (0.106 R)
• M5: 1,505,104 km (0.086 R)
• M6: 2,240,378 km (0.095 R)
• M7: 3,478,749 km (0.051 R)
• M8: 3,818,336 km (0.111 R)
• M9: 4,268,326 km (0.106 R)
• M10: 5,326,283 km (0.06 R)
• M11: 5,972,396 km (0.078 R)
• M12: 6,700,040 km (0.063 R)
• M13: 7,100,962 km (0.1 R)
• M14: 9,088,819 km (0.083 R)
• M15: 12,174,574 km (0.085 R)
• M16: 12,632,792 km (0.094 R)
• M17: 13,150,102 km (0.119 R)
• M18: 14,226,907 km (0.097 R)
• M19: 15,896,719 km (0.087 R)
• M20: 16,891,395 km (0.106 R)
• M21: 17,868,269 km (0.11 R)
• M22: 19,434,559 km (0.083 R)
• M23: 23,254,839 km (0.094 R)

Planet 6 - Gas Giant

Semi-Major Axis: 7.23 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 448.8

Radius: 13.9

Gravity: 2.32 G

Time & Orbit

Eccentricity (e): 0.095

Orbit Range: 6.54 AU - 7.92 AU

Year: 7136 Days

Day: 7.3 Hours

Environment

Temp: -159 °C

Axial Tilt: 32.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 50,380,726 km

• M1: 184,155 km (0.058 R)
• M2: 727,794 km (0.049 R)
• M3: 1,256,622 km (0.109 R)
• M4: 2,419,147 km (0.03 R)
• M5: 4,184,252 km (0.108 R)
• M6: 6,265,608 km (0.101 R)
• M7: 6,862,354 km (0.076 R)
• M8: 10,943,533 km (0.065 R)
• M9: 14,350,026 km (0.069 R)
• M10: 15,213,206 km (0.08 R)
• M11: 16,479,253 km (0.112 R)
• M12: 18,811,633 km (0.117 R)
• M13: 22,102,188 km (0.088 R)
• M14: 31,301,110 km (0.083 R)

Planet 7 - Gas Giant

Semi-Major Axis: 8.1 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 339.7

Radius: 9.5

Gravity: 3.76 G

Time & Orbit

Eccentricity (e): 0.087

Orbit Range: 7.4 AU - 8.8 AU

Year: 8463 Days

Day: 5.1 Hours

Environment

Temp: -159 °C

Axial Tilt: 48.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 50,380,726 km

• M1: 118,182 km (0.115 R)
• M2: 951,742 km (0.077 R)
• M3: 1,311,824 km (0.11 R)
• M4: 1,722,769 km (0.11 R)
• M5: 9,068,922 km (0.084 R)
• M6: 9,493,630 km (0.118 R)
• M7: 10,895,662 km (0.081 R)
• M8: 18,497,328 km (0.082 R)
• M9: 19,459,541 km (0.107 R)
• M10: 21,334,751 km (0.048 R)
• M11: 23,012,940 km (0.054 R)
• M12: 31,470,306 km (0.115 R)
• M13: 33,540,142 km (0.05 R)

Planet 8 - Gas Giant

Semi-Major Axis: 9.01 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 220.2

Radius: 10.5

Gravity: 2 G

Time & Orbit

Eccentricity (e): 0.222

Orbit Range: 7.01 AU - 11.01 AU

Year: 9928 Days

Day: 11.2 Hours

Environment

Temp: -179 °C

Axial Tilt: 7.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 50,380,726 km

• M1: 131,347 km (0.051 R)
• M2: 736,321 km (0.035 R)
• M3: 1,398,590 km (0.095 R)
• M4: 2,182,483 km (0.098 R)
• M5: 2,700,242 km (0.109 R)
• M6: 5,003,600 km (0.119 R)
• M7: 6,917,555 km (0.118 R)
• M8: 7,409,583 km (0.09 R)
• M9: 10,229,502 km (0.12 R)
• M10: 13,588,573 km (0.12 R)
• M11: 13,971,394 km (0.086 R)
• M12: 16,484,040 km (0.108 R)
• M13: 19,837,575 km (0.079 R)
• M14: 21,710,989 km (0.077 R)
• M15: 22,537,966 km (0.093 R)
• M16: 24,737,953 km (0.093 R)
• M17: 25,557,151 km (0.102 R)
• M18: 26,991,345 km (0.063 R)
• M19: 29,743,497 km (0.09 R)
• M20: 31,519,823 km (0.052 R)

Planet 9 - Gas Giant

Semi-Major Axis: 10.37 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 529.3

Radius: 8.3

Gravity: 7.68 G

Time & Orbit

Eccentricity (e): 0.164

Orbit Range: 8.67 AU - 12.07 AU

Year: 12259 Days

Day: 9.3 Hours

Environment

Temp: -179 °C

Axial Tilt: 34.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 50,380,726 km

• M1: 103,522 km (0.099 R)
• M2: 411,394 km (0.038 R)
• M3: 707,000 km (0.065 R)
• M4: 1,254,827 km (0.107 R)
• M5: 1,766,152 km (0.103 R)
• M6: 2,862,106 km (0.068 R)
• M7: 3,670,833 km (0.034 R)
• M8: 4,045,126 km (0.077 R)
• M9: 5,323,141 km (0.086 R)
• M10: 6,733,400 km (0.105 R)
• M11: 8,698,368 km (0.074 R)
• M12: 9,414,194 km (0.088 R)
• M13: 10,908,976 km (0.087 R)
• M14: 11,181,842 km (0.107 R)
• M15: 12,795,106 km (0.12 R)
• M16: 13,783,649 km (0.091 R)
• M17: 16,476,560 km (0.116 R)
• M18: 22,700,729 km (0.114 R)
• M19: 29,059,536 km (0.118 R)
• M20: 42,263,942 km (0.077 R)
• M21: 43,756,629 km (0.092 R)
• M22: 45,848,307 km (0.068 R)

Kuiper Belt

Range: 30 - 59 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 190 - 10,590 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit