🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.28 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.56 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.44

Radius: 1.64

Gravity: 1.28 G

Time & Orbit

Eccentricity (e): 0.247

Orbit Range: 0.42 AU - 0.7 AU

Year: 151 Days

Day: 27.7 Hours

Environment

Temp: 252 °C

Axial Tilt: 37.6 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 1.27 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.65

Radius: 1.68

Gravity: 1.29 G

Time & Orbit

Eccentricity (e): 0.065

Orbit Range: 1.19 AU - 1.35 AU

Year: 515 Days

Day: 23.5 Hours

Environment

Temp: 15 °C

Axial Tilt: 11.5 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Satellites (1)

Outer Limit: 84,548,641 km

• M1: 300,991 km (0.031 R)

Planet 3 - Terrestrial

Semi-Major Axis: 1.61 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.54

Radius: 1.66

Gravity: 1.28 G

Time & Orbit

Eccentricity (e): 0.04

Orbit Range: 1.55 AU - 1.67 AU

Year: 735 Days

Day: 19.2 Hours

Environment

Temp: -31 °C

Axial Tilt: 34.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 84,548,641 km

• M1: 1,342,790 km (0.055 R)

Planet 4 - Terrestrial

Semi-Major Axis: 2.12 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.77

Radius: 1.87

Gravity: 1.36 G

Time & Orbit

Eccentricity (e): 0.082

Orbit Range: 1.95 AU - 2.29 AU

Year: 1111 Days

Day: 27 Hours

Environment

Temp: -75 °C

Axial Tilt: 3.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 84,548,641 km

• M1: 49,816 km (0.105 R)

Planet 5 - Terrestrial

Semi-Major Axis: 3.89 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.72

Radius: 1.86

Gravity: 1.36 G

Time & Orbit

Eccentricity (e): 0.012

Orbit Range: 3.84 AU - 3.94 AU

Year: 2761 Days

Day: 23.8 Hours

Environment

Temp: -115 °C

Axial Tilt: 5.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 6 - Terrestrial

Semi-Major Axis: 4.36 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.62

Radius: 1.21

Gravity: 1.11 G

Time & Orbit

Eccentricity (e): 0.098

Orbit Range: 3.93 AU - 4.79 AU

Year: 3276 Days

Day: 46.6 Hours

Environment

Temp: -133 °C

Axial Tilt: 35.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 7 - Gas Giant

Semi-Major Axis: 6.37 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 158.3

Radius: 13.5

Gravity: 0.87 G

Time & Orbit

Eccentricity (e): 0.093

Orbit Range: 5.78 AU - 6.96 AU

Year: 5786 Days

Day: 8.8 Hours

Environment

Temp: -153 °C

Axial Tilt: 39.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 84,548,641 km

• M1: 172,935 km (0.116 R)
• M2: 687,851 km (0.063 R)
• M3: 1,332,917 km (0.089 R)
• M4: 2,088,536 km (0.064 R)
• M5: 2,745,869 km (0.056 R)
• M6: 3,410,981 km (0.098 R)
• M7: 4,181,859 km (0.082 R)
• M8: 5,184,913 km (0.101 R)
• M9: 5,808,287 km (0.111 R)
• M10: 6,370,027 km (0.036 R)
• M11: 8,645,411 km (0.055 R)
• M12: 9,524,148 km (0.119 R)
• M13: 12,476,762 km (0.079 R)
• M14: 13,187,501 km (0.07 R)
• M15: 13,645,420 km (0.054 R)
• M16: 16,725,640 km (0.082 R)
• M17: 19,822,765 km (0.067 R)

Planet 8 - Gas Giant

Semi-Major Axis: 8.01 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 819.6

Radius: 11.2

Gravity: 6.53 G

Time & Orbit

Eccentricity (e): 0.103

Orbit Range: 7.18 AU - 8.84 AU

Year: 8159 Days

Day: 11.7 Hours

Environment

Temp: -159 °C

Axial Tilt: 31 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (26)

Outer Limit: 84,548,641 km

• M1: 139,575 km (0.033 R)
• M2: 774,767 km (0.103 R)
• M3: 1,186,311 km (0.108 R)
• M4: 1,563,597 km (0.035 R)
• M5: 2,257,881 km (0.085 R)
• M6: 2,666,881 km (0.057 R)
• M7: 3,444,192 km (0.094 R)
• M8: 3,938,014 km (0.073 R)
• M9: 5,945,767 km (0.085 R)
• M10: 6,367,035 km (0.049 R)
• M11: 7,508,317 km (0.06 R)
• M12: 9,189,648 km (0.081 R)
• M13: 9,563,493 km (0.086 R)
• M14: 10,695,201 km (0.086 R)
• M15: 11,320,071 km (0.103 R)
• M16: 14,626,333 km (0.08 R)
• M17: 15,331,239 km (0.071 R)
• M18: 18,160,134 km (0.032 R)
• M19: 18,899,597 km (0.053 R)
• M20: 20,597,084 km (0.102 R)
• M21: 27,822,661 km (0.059 R)
• M22: 28,409,533 km (0.099 R)
• M23: 29,204,945 km (0.107 R)
• M24: 31,468,810 km (0.104 R)
• M25: 34,628,616 km (0.113 R)
• M26: 35,880,600 km (0.111 R)

Planet 9 - Ice Giant

Semi-Major Axis: 15.84 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 730.3

Radius: 5.3

Gravity: 26 G

Time & Orbit

Eccentricity (e): 0.099

Orbit Range: 14.27 AU - 17.41 AU

Year: 22688 Days

Day: 22.6 Hours

Environment

Temp: -197 °C

Axial Tilt: 2.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (26)

Outer Limit: 84,548,641 km

• M1: 65,973 km (0.03 R)
• M2: 251,474 km (0.097 R)
• M3: 917,334 km (0.082 R)
• M4: 1,107,323 km (0.09 R)
• M5: 2,782,670 km (0.075 R)
• M6: 4,665,210 km (0.105 R)
• M7: 6,643,342 km (0.12 R)
• M8: 7,019,880 km (0.062 R)
• M9: 9,763,804 km (0.095 R)
• M10: 13,817,308 km (0.075 R)
• M11: 17,861,836 km (0.067 R)
• M12: 18,960,333 km (0.114 R)
• M13: 20,200,500 km (0.108 R)
• M14: 25,818,049 km (0.112 R)
• M15: 30,175,686 km (0.11 R)
• M16: 30,688,058 km (0.072 R)
• M17: 40,933,269 km (0.117 R)
• M18: 44,466,471 km (0.112 R)
• M19: 50,318,141 km (0.109 R)
• M20: 51,583,440 km (0.061 R)
• M21: 55,506,495 km (0.064 R)
• M22: 56,275,577 km (0.109 R)
• M23: 56,662,737 km (0.118 R)
• M24: 69,122,145 km (0.082 R)
• M25: 76,932,799 km (0.105 R)
• M26: 80,312,814 km (0.109 R)

Kuiper Belt

Range: 30.5 - 60.5 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 190 - 16,014 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit