🌌 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: 0.52 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.85

Radius: 1.88

Gravity: 1.37 G

Time & Orbit

Eccentricity (e): 0.13

Orbit Range: 0.45 AU - 0.59 AU

Year: 246 Days

Day: 15.2 Hours

Environment

Temp: -127 °C

Axial Tilt: 35.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.54 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.28

Radius: 1.1

Gravity: 1.06 G

Time & Orbit

Eccentricity (e): 0.06

Orbit Range: 0.51 AU - 0.57 AU

Year: 260 Days

Day: 41.2 Hours

Environment

Temp: -120 °C

Axial Tilt: 51.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Terrestrial

Semi-Major Axis: 0.54 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.06

Radius: 1.34

Gravity: 1.15 G

Time & Orbit

Eccentricity (e): 0.084

Orbit Range: 0.49 AU - 0.59 AU

Year: 260 Days

Day: 15.6 Hours

Environment

Temp: -124 °C

Axial Tilt: 4.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 4 - Gas Giant

Semi-Major Axis: 0.79 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 85

Radius: 11.5

Gravity: 0.64 G

Time & Orbit

Eccentricity (e): 0.059

Orbit Range: 0.74 AU - 0.84 AU

Year: 461 Days

Day: 6.7 Hours

Environment

Temp: -140 °C

Axial Tilt: 33 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (5)

Outer Limit: 32,271,127 km

• M1: 146,905 km (0.064 R)
• M2: 1,277,865 km (0.07 R)
• M3: 1,653,954 km (0.085 R)
• M4: 2,132,368 km (0.087 R)
• M5: 2,866,295 km (0.073 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.04 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 574.7

Radius: 11.6

Gravity: 4.27 G

Time & Orbit

Eccentricity (e): 0.101

Orbit Range: 0.93 AU - 1.15 AU

Year: 696 Days

Day: 13.9 Hours

Environment

Temp: -160 °C

Axial Tilt: 49.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 32,271,127 km

• M1: 144,212 km (0.04 R)
• M2: 552,764 km (0.092 R)
• M3: 1,122,134 km (0.06 R)
• M4: 2,331,034 km (0.027 R)
• M5: 3,985,886 km (0.084 R)
• M6: 4,719,813 km (0.118 R)
• M7: 6,140,693 km (0.099 R)
• M8: 6,782,767 km (0.08 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.13 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 50.7

Radius: 12.5

Gravity: 0.32 G

Time & Orbit

Eccentricity (e): 0.035

Orbit Range: 3.02 AU - 3.24 AU

Year: 3633 Days

Day: 14.8 Hours

Environment

Temp: -208 °C

Axial Tilt: 34.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 32,271,127 km

• M1: 160,219 km (0.085 R)
• M2: 584,329 km (0.106 R)
• M3: 1,112,260 km (0.094 R)
• M4: 1,640,789 km (0.063 R)
• M5: 3,528,266 km (0.09 R)
• M6: 8,324,374 km (0.065 R)
• M7: 9,082,984 km (0.092 R)

Planet 7 - Gas Giant

Semi-Major Axis: 4.38 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 759.5

Radius: 10

Gravity: 7.6 G

Time & Orbit

Eccentricity (e): 0.241

Orbit Range: 3.32 AU - 5.44 AU

Year: 6013 Days

Day: 11.5 Hours

Environment

Temp: -223 °C

Axial Tilt: 103 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 32,271,127 km

• M1: 125,064 km (0.074 R)
• M2: 445,951 km (0.065 R)
• M3: 1,256,921 km (0.08 R)
• M4: 1,583,194 km (0.091 R)
• M5: 1,908,420 km (0.053 R)
• M6: 2,378,457 km (0.114 R)
• M7: 3,228,023 km (0.088 R)
• M8: 3,597,530 km (0.109 R)
• M9: 4,068,314 km (0.088 R)
• M10: 5,249,988 km (0.078 R)
• M11: 6,276,528 km (0.055 R)
• M12: 6,785,161 km (0.086 R)
• M13: 8,118,676 km (0.08 R)
• M14: 8,518,402 km (0.114 R)
• M15: 9,400,581 km (0.07 R)
• M16: 11,594,284 km (0.1 R)
• M17: 12,360,973 km (0.109 R)
• M18: 15,162,043 km (0.117 R)
• M19: 16,203,693 km (0.071 R)
• M20: 20,045,367 km (0.066 R)
• M21: 20,555,495 km (0.118 R)
• M22: 27,999,785 km (0.093 R)
• M23: 32,368,641 km (0.067 R)
• M24: 34,714,635 km (0.1 R)

Planet 8 - Ice Giant

Semi-Major Axis: 7.7 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 106.4

Radius: 5

Gravity: 4.26 G

Time & Orbit

Eccentricity (e): 0.001

Orbit Range: 7.69 AU - 7.71 AU

Year: 14017 Days

Day: 20.8 Hours

Environment

Temp: -219 °C

Axial Tilt: 25.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 32,271,127 km

• M1: 64,626 km (0.081 R)
• M2: 266,135 km (0.083 R)
• M3: 524,341 km (0.102 R)
• M4: 717,471 km (0.057 R)
• M5: 914,492 km (0.074 R)
• M6: 1,350,570 km (0.117 R)
• M7: 1,590,076 km (0.041 R)
• M8: 1,885,980 km (0.079 R)
• M9: 3,691,477 km (0.111 R)
• M10: 5,568,482 km (0.116 R)
• M11: 7,664,497 km (0.078 R)
• M12: 10,145,129 km (0.097 R)
• M13: 11,204,881 km (0.101 R)
• M14: 11,884,803 km (0.095 R)
• M15: 16,801,786 km (0.118 R)
• M16: 17,691,594 km (0.098 R)
• M17: 26,643,979 km (0.106 R)
• M18: 27,764,617 km (0.034 R)
• M19: 28,292,249 km (0.094 R)
• M20: 29,276,902 km (0.064 R)
• M21: 31,219,879 km (0.104 R)

Kuiper Belt

Range: 30 - 50 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 311 - 16,787 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit