🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.52 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 1.03 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.88

Radius: 0.95

Gravity: 0.98 G

Time & Orbit

Eccentricity (e): 0.075

Orbit Range: 0.95 AU - 1.11 AU

Year: 388 Days

Day: 18.7 Hours

Environment

Temp: 19 °C

Axial Tilt: 21.4 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Satellites (1)

Outer Limit: 62,714,019 km

• M1: 54,005 km (0.108 R)

Planet 2 - Terrestrial

Semi-Major Axis: 3.52 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.47

Radius: 1.44

Gravity: 1.19 G

Time & Orbit

Eccentricity (e): 0.207

Orbit Range: 2.79 AU - 4.25 AU

Year: 2449 Days

Day: 43.5 Hours

Environment

Temp: -122 °C

Axial Tilt: 37 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 6.69 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 828.1

Radius: 13.8

Gravity: 4.35 G

Time & Orbit

Eccentricity (e): 0.027

Orbit Range: 6.51 AU - 6.87 AU

Year: 6417 Days

Day: 9.5 Hours

Environment

Temp: -162 °C

Axial Tilt: 14.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 62,714,019 km

• M1: 176,077 km (0.097 R)
• M2: 619,784 km (0.109 R)
• M3: 1,364,931 km (0.09 R)
• M4: 1,921,435 km (0.11 R)
• M5: 2,467,018 km (0.113 R)
• M6: 3,136,619 km (0.117 R)
• M7: 4,512,769 km (0.048 R)
• M8: 4,955,729 km (0.051 R)
• M9: 7,212,113 km (0.04 R)
• M10: 9,718,177 km (0.044 R)
• M11: 15,808,905 km (0.077 R)
• M12: 16,838,288 km (0.113 R)
• M13: 17,503,998 km (0.101 R)
• M14: 20,418,613 km (0.116 R)
• M15: 27,374,615 km (0.108 R)
• M16: 31,984,922 km (0.063 R)

Planet 4 - Gas Giant

Semi-Major Axis: 7.66 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 374.1

Radius: 14.1

Gravity: 1.88 G

Time & Orbit

Eccentricity (e): 0.073

Orbit Range: 7.1 AU - 8.22 AU

Year: 7862 Days

Day: 11.7 Hours

Environment

Temp: -170 °C

Axial Tilt: 12.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 62,714,019 km

• M1: 176,376 km (0.092 R)
• M2: 896,390 km (0.067 R)
• M3: 1,368,521 km (0.088 R)
• M4: 2,316,224 km (0.115 R)
• M5: 2,908,183 km (0.081 R)
• M6: 4,153,585 km (0.078 R)
• M7: 4,816,752 km (0.069 R)
• M8: 8,011,564 km (0.08 R)
• M9: 8,556,250 km (0.083 R)
• M10: 10,753,394 km (0.088 R)
• M11: 13,358,043 km (0.037 R)
• M12: 15,749,514 km (0.112 R)
• M13: 17,430,246 km (0.093 R)
• M14: 18,016,221 km (0.09 R)
• M15: 22,569,831 km (0.051 R)
• M16: 23,188,268 km (0.073 R)
• M17: 23,738,789 km (0.097 R)
• M18: 29,001,642 km (0.06 R)

Planet 5 - Gas Giant

Semi-Major Axis: 9.48 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 192.3

Radius: 13.3

Gravity: 1.09 G

Time & Orbit

Eccentricity (e): 0.183

Orbit Range: 7.75 AU - 11.21 AU

Year: 10825 Days

Day: 11.2 Hours

Environment

Temp: -181 °C

Axial Tilt: 37.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 62,714,019 km

• M1: 167,998 km (0.086 R)
• M2: 857,645 km (0.027 R)
• M3: 1,505,553 km (0.119 R)
• M4: 1,957,787 km (0.088 R)
• M5: 2,710,564 km (0.101 R)
• M6: 4,231,525 km (0.095 R)
• M7: 4,767,983 km (0.043 R)
• M8: 5,235,177 km (0.12 R)
• M9: 7,312,344 km (0.111 R)
• M10: 8,011,864 km (0.104 R)
• M11: 10,200,929 km (0.064 R)
• M12: 11,750,763 km (0.058 R)
• M13: 13,943,868 km (0.079 R)
• M14: 14,674,953 km (0.114 R)
• M15: 17,021,844 km (0.065 R)
• M16: 19,401,497 km (0.118 R)
• M17: 21,252,622 km (0.07 R)
• M18: 23,768,409 km (0.08 R)
• M19: 25,802,042 km (0.063 R)
• M20: 28,392,629 km (0.094 R)
• M21: 28,930,882 km (0.07 R)
• M22: 31,533,137 km (0.042 R)
• M23: 32,110,435 km (0.064 R)

Planet 6 - Gas Giant

Semi-Major Axis: 11.65 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 816.9

Radius: 13.2

Gravity: 4.69 G

Time & Orbit

Eccentricity (e): 0.085

Orbit Range: 10.66 AU - 12.64 AU

Year: 14747 Days

Day: 8.4 Hours

Environment

Temp: -186 °C

Axial Tilt: 47.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 62,714,019 km

• M1: 166,054 km (0.058 R)
• M2: 681,867 km (0.115 R)
• M3: 1,606,232 km (0.088 R)
• M4: 2,723,280 km (0.074 R)
• M5: 5,136,144 km (0.095 R)
• M6: 8,474,420 km (0.041 R)
• M7: 12,717,913 km (0.11 R)
• M8: 16,201,898 km (0.107 R)
• M9: 19,308,747 km (0.113 R)
• M10: 22,696,091 km (0.107 R)
• M11: 23,477,441 km (0.11 R)
• M12: 24,075,234 km (0.093 R)
• M13: 26,354,358 km (0.109 R)
• M14: 27,326,893 km (0.09 R)
• M15: 34,945,763 km (0.104 R)
• M16: 38,683,616 km (0.066 R)
• M17: 49,503,880 km (0.058 R)

Planet 7 - Ice Giant

Semi-Major Axis: 12.31 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 598

Radius: 6.6

Gravity: 13.73 G

Time & Orbit

Eccentricity (e): 0.221

Orbit Range: 9.59 AU - 15.03 AU

Year: 16017 Days

Day: 20 Hours

Environment

Temp: -193 °C

Axial Tilt: 9.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 62,714,019 km

• M1: 82,129 km (0.051 R)
• M2: 348,413 km (0.1 R)
• M3: 670,498 km (0.094 R)
• M4: 1,025,942 km (0.11 R)
• M5: 1,370,466 km (0.116 R)
• M6: 1,739,524 km (0.085 R)
• M7: 3,127,643 km (0.073 R)
• M8: 5,096,650 km (0.092 R)
• M9: 6,138,749 km (0.11 R)
• M10: 6,879,557 km (0.113 R)
• M11: 7,586,856 km (0.073 R)
• M12: 12,113,688 km (0.089 R)
• M13: 13,275,165 km (0.088 R)
• M14: 15,520,330 km (0.082 R)
• M15: 16,577,688 km (0.058 R)
• M16: 19,258,781 km (0.082 R)
• M17: 27,902,845 km (0.113 R)
• M18: 40,759,137 km (0.07 R)

Kuiper Belt

Range: 30 - 49 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 245 - 12,687 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit