🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.33 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.66 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.65

Radius: 0.84

Gravity: 0.92 G

Time & Orbit

Eccentricity (e): 0.128

Orbit Range: 0.58 AU - 0.74 AU

Year: 346 Days

Day: 38.5 Hours

Environment

Temp: -133 °C

Axial Tilt: 13 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.81 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 161.6

Radius: 13.1

Gravity: 0.94 G

Time & Orbit

Eccentricity (e): 0.069

Orbit Range: 0.75 AU - 0.87 AU

Year: 471 Days

Day: 14.9 Hours

Environment

Temp: -151 °C

Axial Tilt: 25.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 30,284,314 km

• M1: 162,912 km (0.064 R)
• M2: 603,328 km (0.066 R)
• M3: 1,040,004 km (0.049 R)
• M4: 1,475,334 km (0.095 R)
• M5: 1,938,190 km (0.068 R)
• M6: 2,347,041 km (0.096 R)
• M7: 3,783,929 km (0.111 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.91 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 711

Radius: 10.3

Gravity: 6.7 G

Time & Orbit

Eccentricity (e): 0.138

Orbit Range: 0.78 AU - 1.04 AU

Year: 561 Days

Day: 5.8 Hours

Environment

Temp: -154 °C

Axial Tilt: 36.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 30,284,314 km

• M1: 128,205 km (0.063 R)
• M2: 464,651 km (0.12 R)
• M3: 949,198 km (0.088 R)
• M4: 1,367,025 km (0.095 R)
• M5: 1,873,414 km (0.077 R)
• M6: 2,471,207 km (0.038 R)
• M7: 2,991,060 km (0.057 R)
• M8: 3,440,452 km (0.037 R)
• M9: 3,782,732 km (0.104 R)
• M10: 4,220,904 km (0.037 R)
• M11: 5,527,791 km (0.077 R)
• M12: 5,888,471 km (0.072 R)
• M13: 6,419,993 km (0.061 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.29 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 918.4

Radius: 8.7

Gravity: 12.13 G

Time & Orbit

Eccentricity (e): 0.127

Orbit Range: 1.13 AU - 1.45 AU

Year: 946 Days

Day: 7.7 Hours

Environment

Temp: -171 °C

Axial Tilt: 20.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 30,284,314 km

• M1: 117,285 km (0.108 R)
• M2: 829,969 km (0.117 R)
• M3: 1,347,727 km (0.104 R)
• M4: 1,680,433 km (0.101 R)
• M5: 2,586,547 km (0.106 R)
• M6: 2,943,189 km (0.111 R)
• M7: 3,274,697 km (0.105 R)
• M8: 3,708,681 km (0.094 R)
• M9: 4,163,608 km (0.067 R)
• M10: 4,619,133 km (0.098 R)
• M11: 5,165,914 km (0.1 R)
• M12: 5,776,273 km (0.109 R)
• M13: 6,710,512 km (0.044 R)
• M14: 8,269,022 km (0.042 R)
• M15: 9,306,633 km (0.079 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.31 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 851.5

Radius: 10.7

Gravity: 7.44 G

Time & Orbit

Eccentricity (e): 0.033

Orbit Range: 1.27 AU - 1.35 AU

Year: 968 Days

Day: 12.5 Hours

Environment

Temp: -177 °C

Axial Tilt: 20.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 30,284,314 km

• M1: 135,386 km (0.095 R)
• M2: 605,123 km (0.077 R)
• M3: 1,085,333 km (0.066 R)
• M4: 1,749,098 km (0.111 R)
• M5: 2,141,793 km (0.113 R)
• M6: 2,946,779 km (0.116 R)
• M7: 3,597,978 km (0.117 R)
• M8: 3,942,203 km (0.069 R)
• M9: 4,325,622 km (0.101 R)
• M10: 5,325,086 km (0.09 R)
• M11: 6,072,626 km (0.042 R)
• M12: 7,802,127 km (0.103 R)
• M13: 8,168,044 km (0.108 R)
• M14: 8,683,109 km (0.058 R)
• M15: 10,204,220 km (0.086 R)
• M16: 10,802,013 km (0.066 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 477.2

Radius: 9.8

Gravity: 4.97 G

Time & Orbit

Eccentricity (e): 0.097

Orbit Range: 1.81 AU - 2.19 AU

Year: 1826 Days

Day: 14.8 Hours

Environment

Temp: -185 °C

Axial Tilt: 47.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 30,284,314 km

• M1: 122,072 km (0.077 R)
• M2: 445,652 km (0.114 R)
• M3: 963,709 km (0.104 R)
• M4: 1,511,387 km (0.045 R)
• M5: 2,477,042 km (0.107 R)
• M6: 3,213,961 km (0.067 R)
• M7: 4,126,358 km (0.086 R)
• M8: 4,555,704 km (0.099 R)
• M9: 5,909,565 km (0.051 R)
• M10: 9,359,740 km (0.036 R)
• M11: 9,678,234 km (0.07 R)

Planet 7 - Gas Giant

Semi-Major Axis: 5.69 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 158.1

Radius: 9.4

Gravity: 1.79 G

Time & Orbit

Eccentricity (e): 0.035

Orbit Range: 5.49 AU - 5.89 AU

Year: 8764 Days

Day: 6.8 Hours

Environment

Temp: -212 °C

Axial Tilt: 13.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 30,284,314 km

• M1: 116,836 km (0.078 R)
• M2: 551,119 km (0.037 R)
• M3: 862,731 km (0.094 R)
• M4: 1,346,979 km (0.114 R)
• M5: 1,769,144 km (0.07 R)
• M6: 5,187,007 km (0.104 R)
• M7: 5,821,152 km (0.112 R)
• M8: 6,172,109 km (0.078 R)
• M9: 6,820,466 km (0.114 R)
• M10: 7,377,868 km (0.026 R)
• M11: 8,546,526 km (0.059 R)
• M12: 8,923,812 km (0.037 R)
• M13: 10,248,950 km (0.08 R)
• M14: 11,608,795 km (0.109 R)
• M15: 12,499,650 km (0.075 R)
• M16: 13,791,727 km (0.069 R)
• M17: 14,206,562 km (0.104 R)
• M18: 15,949,975 km (0.095 R)
• M19: 19,791,200 km (0.09 R)
• M20: 20,789,167 km (0.116 R)
• M21: 24,736,307 km (0.078 R)

Planet 8 - Ice Giant

Semi-Major Axis: 6.51 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 150.2

Radius: 7.5

Gravity: 2.67 G

Time & Orbit

Eccentricity (e): 0.103

Orbit Range: 5.84 AU - 7.18 AU

Year: 10725 Days

Day: 16.8 Hours

Environment

Temp: -221 °C

Axial Tilt: 49.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (26)

Outer Limit: 30,284,314 km

• M1: 93,349 km (0.103 R)
• M2: 357,240 km (0.109 R)
• M3: 1,259,016 km (0.089 R)
• M4: 1,501,813 km (0.075 R)
• M5: 1,816,118 km (0.093 R)
• M6: 2,069,238 km (0.103 R)
• M7: 2,330,136 km (0.096 R)
• M8: 2,665,086 km (0.053 R)
• M9: 2,955,904 km (0.094 R)
• M10: 3,411,280 km (0.089 R)
• M11: 4,338,338 km (0.044 R)
• M12: 4,742,402 km (0.119 R)
• M13: 5,282,450 km (0.055 R)
• M14: 7,570,849 km (0.088 R)
• M15: 8,499,852 km (0.103 R)
• M16: 9,586,232 km (0.1 R)
• M17: 9,925,370 km (0.115 R)
• M18: 10,807,848 km (0.067 R)
• M19: 11,886,448 km (0.114 R)
• M20: 12,830,112 km (0.042 R)
• M21: 13,086,523 km (0.073 R)
• M22: 14,531,040 km (0.112 R)
• M23: 16,557,642 km (0.116 R)
• M24: 20,318,981 km (0.12 R)
• M25: 26,306,636 km (0.118 R)
• M26: 27,733,201 km (0.074 R)

Kuiper Belt

Range: 30 - 54 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 551 - 14,147 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit