🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.28 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.56 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.8

Radius: 1.71

Gravity: 1.3 G

Time & Orbit

Eccentricity (e): 0.173

Orbit Range: 0.46 AU - 0.66 AU

Year: 275 Days

Day: 18.5 Hours

Environment

Temp: -123 °C

Axial Tilt: 50 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 43,156,619 km

• M1: 39,943 km (0.109 R)
• M2: 294,558 km (0.114 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.91 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 278.2

Radius: 9.9

Gravity: 2.84 G

Time & Orbit

Eccentricity (e): 0.046

Orbit Range: 0.87 AU - 0.95 AU

Year: 569 Days

Day: 8.7 Hours

Environment

Temp: -155 °C

Axial Tilt: 27 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (5)

Outer Limit: 43,156,619 km

• M1: 123,269 km (0.109 R)
• M2: 500,554 km (0.086 R)
• M3: 2,711,013 km (0.083 R)
• M4: 4,223,746 km (0.099 R)
• M5: 4,952,438 km (0.09 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.73 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 115.4

Radius: 8.1

Gravity: 1.76 G

Time & Orbit

Eccentricity (e): 0.088

Orbit Range: 1.58 AU - 1.88 AU

Year: 1493 Days

Day: 8.5 Hours

Environment

Temp: -188 °C

Axial Tilt: 24.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 43,156,619 km

• M1: 100,979 km (0.088 R)
• M2: 660,923 km (0.066 R)
• M3: 1,964,669 km (0.086 R)
• M4: 2,947,826 km (0.104 R)
• M5: 3,765,378 km (0.098 R)
• M6: 5,211,840 km (0.079 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.24 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 357.7

Radius: 14.3

Gravity: 1.75 G

Time & Orbit

Eccentricity (e): 0.11

Orbit Range: 1.99 AU - 2.49 AU

Year: 2199 Days

Day: 6.9 Hours

Environment

Temp: -183 °C

Axial Tilt: 26.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 43,156,619 km

• M1: 177,872 km (0.107 R)
• M2: 699,819 km (0.116 R)
• M3: 1,761,964 km (0.054 R)
• M4: 2,462,979 km (0.068 R)
• M5: 3,102,809 km (0.043 R)
• M6: 4,079,833 km (0.106 R)
• M7: 4,680,169 km (0.078 R)
• M8: 6,666,530 km (0.109 R)
• M9: 7,181,296 km (0.067 R)
• M10: 8,175,075 km (0.094 R)
• M11: 9,384,873 km (0.033 R)
• M12: 10,470,205 km (0.088 R)
• M13: 10,920,196 km (0.104 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.5 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 953.2

Radius: 12.8

Gravity: 5.82 G

Time & Orbit

Eccentricity (e): 0.052

Orbit Range: 3.32 AU - 3.68 AU

Year: 4295 Days

Day: 8.9 Hours

Environment

Temp: -212 °C

Axial Tilt: 33.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 43,156,619 km

• M1: 173,085 km (0.09 R)
• M2: 716,873 km (0.117 R)
• M3: 1,152,203 km (0.108 R)
• M4: 1,719,328 km (0.076 R)
• M5: 2,404,487 km (0.103 R)
• M6: 6,257,679 km (0.037 R)
• M7: 7,701,149 km (0.12 R)
• M8: 10,688,469 km (0.101 R)
• M9: 18,057,660 km (0.069 R)
• M10: 22,178,782 km (0.072 R)
• M11: 22,921,835 km (0.116 R)
• M12: 27,990,210 km (0.118 R)
• M13: 28,508,717 km (0.103 R)

Planet 6 - Ice Giant

Semi-Major Axis: 8.77 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 256.4

Radius: 5.5

Gravity: 8.48 G

Time & Orbit

Eccentricity (e): 0.156

Orbit Range: 7.4 AU - 10.14 AU

Year: 17038 Days

Day: 17.8 Hours

Environment

Temp: -223 °C

Axial Tilt: 31.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 43,156,619 km

• M1: 69,413 km (0.077 R)
• M2: 411,245 km (0.091 R)
• M3: 792,121 km (0.116 R)
• M4: 994,527 km (0.045 R)
• M5: 1,207,554 km (0.12 R)
• M6: 1,464,563 km (0.119 R)
• M7: 1,869,225 km (0.111 R)
• M8: 12,787,776 km (0.06 R)
• M9: 14,670,764 km (0.045 R)
• M10: 16,659,368 km (0.119 R)
• M11: 17,019,600 km (0.047 R)
• M12: 17,311,316 km (0.078 R)
• M13: 18,282,954 km (0.11 R)
• M14: 23,510,652 km (0.113 R)
• M15: 23,781,723 km (0.092 R)
• M16: 24,238,445 km (0.089 R)
• M17: 26,707,409 km (0.072 R)
• M18: 31,586,992 km (0.091 R)
• M19: 44,702,985 km (0.088 R)
• M20: 49,130,035 km (0.039 R)

Planet 7 - Ice Giant

Semi-Major Axis: 10.69 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 95.1

Radius: 6.7

Gravity: 2.12 G

Time & Orbit

Eccentricity (e): 0.024

Orbit Range: 10.43 AU - 10.95 AU

Year: 22929 Days

Day: 21.6 Hours

Environment

Temp: -223 °C

Axial Tilt: 145.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 43,156,619 km

• M1: 1,123,031 km (0.059 R)
• M2: 1,481,617 km (0.063 R)
• M3: 1,930,112 km (0.105 R)
• M4: 2,881,554 km (0.107 R)
• M5: 4,470,284 km (0.1 R)
• M6: 5,663,626 km (0.102 R)
• M7: 5,932,603 km (0.099 R)
• M8: 8,706,596 km (0.094 R)
• M9: 21,159,272 km (0.08 R)
• M10: 25,704,355 km (0.096 R)
• M11: 26,910,862 km (0.046 R)
• M12: 42,641,826 km (0.09 R)

Kuiper Belt

Range: 30 - 48 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 294 - 16,912 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit