🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.31 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.61 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.08

Radius: 1.75

Gravity: 1.33 G

Time & Orbit

Eccentricity (e): 0.149

Orbit Range: 0.52 AU - 0.7 AU

Year: 179 Days

Day: 16.4 Hours

Environment

Temp: 138 °C

Axial Tilt: 13.7 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 1.69 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.8

Radius: 1.27

Gravity: 1.12 G

Time & Orbit

Eccentricity (e): 0.16

Orbit Range: 1.42 AU - 1.96 AU

Year: 828 Days

Day: 33.9 Hours

Environment

Temp: -55 °C

Axial Tilt: 1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Terrestrial

Semi-Major Axis: 1.82 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.79

Radius: 1.7

Gravity: 1.31 G

Time & Orbit

Eccentricity (e): 0.191

Orbit Range: 1.47 AU - 2.17 AU

Year: 925 Days

Day: 35.9 Hours

Environment

Temp: -68 °C

Axial Tilt: 5.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 4 - Terrestrial

Semi-Major Axis: 1.94 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.54

Radius: 1.83

Gravity: 1.36 G

Time & Orbit

Eccentricity (e): 0.085

Orbit Range: 1.78 AU - 2.1 AU

Year: 1018 Days

Day: 37.9 Hours

Environment

Temp: -83 °C

Axial Tilt: 6.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 5 - Terrestrial

Semi-Major Axis: 2.59 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.3

Radius: 1.11

Gravity: 1.06 G

Time & Orbit

Eccentricity (e): 0.128

Orbit Range: 2.26 AU - 2.92 AU

Year: 1570 Days

Day: 23.4 Hours

Environment

Temp: -103 °C

Axial Tilt: 33.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 38,788,552 km

• M1: 56,847 km (0.107 R)

Planet 6 - Terrestrial

Semi-Major Axis: 3.81 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.7

Radius: 1.86

Gravity: 1.36 G

Time & Orbit

Eccentricity (e): 0.191

Orbit Range: 3.08 AU - 4.54 AU

Year: 2802 Days

Day: 24.4 Hours

Environment

Temp: -129 °C

Axial Tilt: 12 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 7 - Gas Giant

Semi-Major Axis: 4.87 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 863.2

Radius: 9.7

Gravity: 9.17 G

Time & Orbit

Eccentricity (e): 0.044

Orbit Range: 4.66 AU - 5.08 AU

Year: 4049 Days

Day: 13.7 Hours

Environment

Temp: -143 °C

Axial Tilt: 11 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (28)

Outer Limit: 38,788,552 km

• M1: 122,670 km (0.115 R)
• M2: 446,250 km (0.118 R)
• M3: 808,726 km (0.094 R)
• M4: 1,573,022 km (0.054 R)
• M5: 2,225,867 km (0.037 R)
• M6: 2,657,457 km (0.099 R)
• M7: 3,754,308 km (0.098 R)
• M8: 4,180,064 km (0.112 R)
• M9: 5,155,591 km (0.084 R)
• M10: 6,093,869 km (0.112 R)
• M11: 6,683,434 km (0.081 R)
• M12: 7,008,810 km (0.086 R)
• M13: 7,482,138 km (0.101 R)
• M14: 8,836,447 km (0.045 R)
• M15: 9,756,624 km (0.118 R)
• M16: 11,051,393 km (0.062 R)
• M17: 11,740,142 km (0.109 R)
• M18: 13,406,961 km (0.041 R)
• M19: 13,768,838 km (0.111 R)
• M20: 17,083,329 km (0.034 R)
• M21: 17,570,270 km (0.11 R)
• M22: 18,129,168 km (0.102 R)
• M23: 21,592,957 km (0.1 R)
• M24: 22,162,326 km (0.063 R)
• M25: 22,596,010 km (0.056 R)
• M26: 25,553,710 km (0.085 R)
• M27: 26,675,544 km (0.118 R)
• M28: 27,331,232 km (0.11 R)

Planet 8 - Gas Giant

Semi-Major Axis: 6.55 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 761

Radius: 11.1

Gravity: 6.18 G

Time & Orbit

Eccentricity (e): 0.156

Orbit Range: 5.53 AU - 7.57 AU

Year: 6315 Days

Day: 9.1 Hours

Environment

Temp: -161 °C

Axial Tilt: 6.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (28)

Outer Limit: 38,788,552 km

• M1: 138,079 km (0.069 R)
• M2: 945,758 km (0.119 R)
• M3: 1,543,700 km (0.097 R)
• M4: 2,297,524 km (0.079 R)
• M5: 3,176,112 km (0.04 R)
• M6: 3,635,378 km (0.097 R)
• M7: 4,368,707 km (0.082 R)
• M8: 4,854,301 km (0.098 R)
• M9: 6,496,886 km (0.063 R)
• M10: 7,614,681 km (0.105 R)
• M11: 8,688,794 km (0.086 R)
• M12: 9,503,205 km (0.103 R)
• M13: 11,284,167 km (0.083 R)
• M14: 12,149,142 km (0.08 R)
• M15: 13,782,452 km (0.082 R)
• M16: 14,241,568 km (0.094 R)
• M17: 15,992,611 km (0.096 R)
• M18: 18,291,780 km (0.085 R)
• M19: 19,057,722 km (0.11 R)
• M20: 21,560,943 km (0.034 R)
• M21: 23,536,083 km (0.113 R)
• M22: 25,542,939 km (0.095 R)
• M23: 25,974,977 km (0.058 R)
• M24: 27,843,156 km (0.069 R)
• M25: 28,485,230 km (0.103 R)
• M26: 33,157,770 km (0.117 R)
• M27: 34,611,263 km (0.088 R)
• M28: 36,106,792 km (0.057 R)

Planet 9 - Gas Giant

Semi-Major Axis: 8.33 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 442.5

Radius: 13.7

Gravity: 2.36 G

Time & Orbit

Eccentricity (e): 0.027

Orbit Range: 8.11 AU - 8.55 AU

Year: 9057 Days

Day: 14.6 Hours

Environment

Temp: -169 °C

Axial Tilt: 34 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 38,788,552 km

• M1: 170,392 km (0.057 R)
• M2: 1,073,814 km (0.053 R)
• M3: 2,289,446 km (0.08 R)
• M4: 3,349,197 km (0.083 R)
• M5: 3,904,804 km (0.061 R)
• M6: 6,490,902 km (0.108 R)
• M7: 7,822,772 km (0.105 R)
• M8: 8,595,594 km (0.109 R)
• M9: 9,735,081 km (0.12 R)
• M10: 11,527,264 km (0.096 R)
• M11: 14,886,933 km (0.084 R)
• M12: 20,091,592 km (0.066 R)
• M13: 24,307,709 km (0.108 R)
• M14: 30,143,971 km (0.083 R)
• M15: 34,230,536 km (0.067 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: 187 - 20,070 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit