🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.26 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.51 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.59

Radius: 1.67

Gravity: 1.29 G

Time & Orbit

Eccentricity (e): 0.193

Orbit Range: 0.41 AU - 0.61 AU

Year: 239 Days

Day: 30 Hours

Environment

Temp: -107 °C

Axial Tilt: 12.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 42,426,879 km

• M1: 610,210 km (0.03 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.56 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.76

Radius: 1.7

Gravity: 1.3 G

Time & Orbit

Eccentricity (e): 0.192

Orbit Range: 0.45 AU - 0.67 AU

Year: 275 Days

Day: 20.6 Hours

Environment

Temp: -114 °C

Axial Tilt: 15.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Terrestrial

Semi-Major Axis: 0.59 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.84

Radius: 1.52

Gravity: 1.23 G

Time & Orbit

Eccentricity (e): 0.235

Orbit Range: 0.45 AU - 0.73 AU

Year: 297 Days

Day: 28.7 Hours

Environment

Temp: -124 °C

Axial Tilt: 1.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 4 - Terrestrial

Semi-Major Axis: 0.66 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.58

Radius: 0.8

Gravity: 0.91 G

Time & Orbit

Eccentricity (e): 0.091

Orbit Range: 0.6 AU - 0.72 AU

Year: 352 Days

Day: 22.5 Hours

Environment

Temp: -130 °C

Axial Tilt: 41.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 5 - Gas Giant

Semi-Major Axis: 0.9 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 533.4

Radius: 14.3

Gravity: 2.61 G

Time & Orbit

Eccentricity (e): 0.129

Orbit Range: 0.78 AU - 1.02 AU

Year: 560 Days

Day: 5.1 Hours

Environment

Temp: -161 °C

Axial Tilt: 1.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 42,426,879 km

• M1: 177,872 km (0.092 R)
• M2: 673,490 km (0.066 R)
• M3: 1,346,530 km (0.118 R)
• M4: 1,917,845 km (0.114 R)
• M5: 2,491,852 km (0.092 R)
• M6: 3,273,052 km (0.114 R)
• M7: 3,754,458 km (0.048 R)
• M8: 4,212,826 km (0.113 R)
• M9: 5,050,275 km (0.083 R)
• M10: 5,960,727 km (0.071 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.6 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 923.5

Radius: 9.1

Gravity: 11.15 G

Time & Orbit

Eccentricity (e): 0.234

Orbit Range: 1.23 AU - 1.97 AU

Year: 1328 Days

Day: 11.9 Hours

Environment

Temp: -182 °C

Axial Tilt: 12.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 42,426,879 km

• M1: 113,844 km (0.073 R)
• M2: 536,308 km (0.047 R)
• M3: 968,347 km (0.118 R)
• M4: 1,383,780 km (0.06 R)
• M5: 1,821,653 km (0.039 R)
• M6: 2,350,183 km (0.117 R)
• M7: 3,482,190 km (0.051 R)
• M8: 4,042,583 km (0.072 R)
• M9: 4,372,895 km (0.111 R)
• M10: 5,088,123 km (0.115 R)
• M11: 6,018,771 km (0.025 R)
• M12: 6,980,685 km (0.086 R)
• M13: 8,330,357 km (0.112 R)
• M14: 10,378,801 km (0.117 R)
• M15: 11,392,925 km (0.079 R)
• M16: 12,243,239 km (0.116 R)
• M17: 12,548,718 km (0.068 R)
• M18: 12,898,478 km (0.098 R)

Planet 7 - Gas Giant

Semi-Major Axis: 1.81 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 291

Radius: 12.7

Gravity: 1.8 G

Time & Orbit

Eccentricity (e): 0.235

Orbit Range: 1.38 AU - 2.24 AU

Year: 1597 Days

Day: 8.2 Hours

Environment

Temp: -194 °C

Axial Tilt: 9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 42,426,879 km

• M1: 157,975 km (0.061 R)
• M2: 579,692 km (0.075 R)
• M3: 1,042,099 km (0.097 R)
• M4: 1,731,446 km (0.09 R)
• M5: 2,304,256 km (0.091 R)
• M6: 2,897,412 km (0.104 R)
• M7: 3,711,822 km (0.064 R)
• M8: 4,531,619 km (0.104 R)
• M9: 4,947,501 km (0.063 R)
• M10: 5,650,312 km (0.057 R)
• M11: 6,352,075 km (0.107 R)
• M12: 7,801,828 km (0.086 R)
• M13: 9,461,766 km (0.117 R)

Asteroid Belt

Center: 3.46 AU

Composition

Type: Outer System (Icy)

A dense region of planetesimals and debris.

Boundary

Planet 8 - Gas Giant

Semi-Major Axis: 5.1 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 94.4

Radius: 12.4

Gravity: 0.61 G

Time & Orbit

Eccentricity (e): 0.193

Orbit Range: 4.12 AU - 6.08 AU

Year: 7556 Days

Day: 8.5 Hours

Environment

Temp: -215 °C

Axial Tilt: 48.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 42,426,879 km

• M1: 154,235 km (0.068 R)
• M2: 601,683 km (0.048 R)
• M3: 1,468,602 km (0.115 R)
• M4: 2,164,382 km (0.078 R)
• M5: 2,686,927 km (0.047 R)
• M6: 3,508,818 km (0.112 R)
• M7: 4,110,949 km (0.041 R)
• M8: 5,083,186 km (0.117 R)
• M9: 9,939,731 km (0.111 R)
• M10: 10,669,470 km (0.095 R)
• M11: 11,352,384 km (0.036 R)
• M12: 18,245,405 km (0.119 R)
• M13: 18,700,931 km (0.1 R)
• M14: 20,477,555 km (0.117 R)

Planet 9 - Gas Giant

Semi-Major Axis: 5.56 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 642.2

Radius: 11.2

Gravity: 5.12 G

Time & Orbit

Eccentricity (e): 0.071

Orbit Range: 5.17 AU - 5.95 AU

Year: 8600 Days

Day: 9.2 Hours

Environment

Temp: -224 °C

Axial Tilt: 26.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (28)

Outer Limit: 42,426,879 km

• M1: 139,276 km (0.108 R)
• M2: 640,428 km (0.098 R)
• M3: 1,009,187 km (0.032 R)
• M4: 1,411,306 km (0.104 R)
• M5: 1,936,844 km (0.12 R)
• M6: 3,294,744 km (0.051 R)
• M7: 4,282,239 km (0.089 R)
• M8: 4,671,343 km (0.109 R)
• M9: 5,299,355 km (0.102 R)
• M10: 5,683,074 km (0.115 R)
• M11: 7,022,423 km (0.077 R)
• M12: 7,605,556 km (0.061 R)
• M13: 9,002,052 km (0.108 R)
• M14: 10,413,957 km (0.113 R)
• M15: 11,433,915 km (0.091 R)
• M16: 14,706,219 km (0.073 R)
• M17: 16,589,805 km (0.116 R)
• M18: 17,979,420 km (0.061 R)
• M19: 18,556,419 km (0.103 R)
• M20: 22,529,589 km (0.075 R)
• M21: 23,285,058 km (0.049 R)
• M22: 25,113,892 km (0.114 R)
• M23: 25,472,777 km (0.107 R)
• M24: 28,565,863 km (0.12 R)
• M25: 31,172,905 km (0.107 R)
• M26: 34,594,358 km (0.097 R)
• M27: 37,904,510 km (0.115 R)
• M28: 38,258,608 km (0.092 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: 200 - 12,933 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit