🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.26 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.51 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.51

Radius: 0.76

Gravity: 0.88 G

Time & Orbit

Eccentricity (e): 0.195

Orbit Range: 0.41 AU - 0.61 AU

Year: 158 Days

Day: 25.4 Hours

Environment

Temp: 82 °C

Axial Tilt: 15.3 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 0.66 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.59

Radius: 1.2

Gravity: 1.1 G

Time & Orbit

Eccentricity (e): 0.037

Orbit Range: 0.64 AU - 0.68 AU

Year: 232 Days

Day: 38.8 Hours

Environment

Temp: 2 °C

Axial Tilt: 0.2 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Planet 3 - Terrestrial

Semi-Major Axis: 0.73 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.84

Radius: 1.88

Gravity: 1.37 G

Time & Orbit

Eccentricity (e): 0.247

Orbit Range: 0.55 AU - 0.91 AU

Year: 270 Days

Day: 31 Hours

Environment

Temp: -20 °C

Axial Tilt: 38.4 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Planet 4 - Terrestrial

Semi-Major Axis: 0.74 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.72

Radius: 1.49

Gravity: 1.23 G

Time & Orbit

Eccentricity (e): 0.221

Orbit Range: 0.58 AU - 0.9 AU

Year: 276 Days

Day: 21.3 Hours

Environment

Temp: -10 °C

Axial Tilt: 4.6 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Planet 5 - Terrestrial

Semi-Major Axis: 2.16 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.35

Radius: 1.8

Gravity: 1.34 G

Time & Orbit

Eccentricity (e): 0.209

Orbit Range: 1.71 AU - 2.61 AU

Year: 1376 Days

Day: 36.7 Hours

Environment

Temp: -127 °C

Axial Tilt: 3.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 6 - Gas Giant

Semi-Major Axis: 2.82 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 217.3

Radius: 10.1

Gravity: 2.13 G

Time & Orbit

Eccentricity (e): 0.024

Orbit Range: 2.75 AU - 2.89 AU

Year: 2053 Days

Day: 6 Hours

Environment

Temp: -149 °C

Axial Tilt: 42.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 41,888,017 km

• M1: 126,111 km (0.102 R)
• M2: 477,217 km (0.097 R)
• M3: 1,725,761 km (0.1 R)
• M4: 2,133,266 km (0.092 R)
• M5: 2,604,499 km (0.052 R)
• M6: 7,714,164 km (0.117 R)
• M7: 9,204,009 km (0.114 R)
• M8: 10,329,883 km (0.086 R)

Planet 7 - Gas Giant

Semi-Major Axis: 5.12 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 152.2

Radius: 9.2

Gravity: 1.8 G

Time & Orbit

Eccentricity (e): 0.141

Orbit Range: 4.4 AU - 5.84 AU

Year: 5022 Days

Day: 8 Hours

Environment

Temp: -170 °C

Axial Tilt: 20.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 41,888,017 km

• M1: 115,041 km (0.084 R)
• M2: 465,249 km (0.118 R)
• M3: 781,499 km (0.117 R)
• M4: 1,067,979 km (0.077 R)
• M5: 2,117,707 km (0.068 R)
• M6: 2,677,353 km (0.116 R)
• M7: 3,213,661 km (0.043 R)
• M8: 4,051,559 km (0.112 R)
• M9: 6,286,551 km (0.092 R)
• M10: 7,322,517 km (0.08 R)
• M11: 8,403,660 km (0.118 R)
• M12: 10,386,879 km (0.117 R)
• M13: 10,995,443 km (0.116 R)
• M14: 11,387,839 km (0.106 R)
• M15: 12,200,454 km (0.103 R)
• M16: 12,578,488 km (0.098 R)
• M17: 14,123,834 km (0.113 R)

Planet 8 - Gas Giant

Semi-Major Axis: 6.77 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 784.1

Radius: 12.8

Gravity: 4.79 G

Time & Orbit

Eccentricity (e): 0.109

Orbit Range: 6.03 AU - 7.51 AU

Year: 7636 Days

Day: 6.1 Hours

Environment

Temp: -182 °C

Axial Tilt: 21.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (31)

Outer Limit: 41,888,017 km

• M1: 159,172 km (0.098 R)
• M2: 573,857 km (0.065 R)
• M3: 1,008,290 km (0.063 R)
• M4: 1,526,497 km (0.108 R)
• M5: 2,522,071 km (0.104 R)
• M6: 3,206,780 km (0.084 R)
• M7: 3,617,725 km (0.087 R)
• M8: 4,274,161 km (0.114 R)
• M9: 5,597,504 km (0.108 R)
• M10: 7,177,855 km (0.117 R)
• M11: 8,816,850 km (0.1 R)
• M12: 9,445,759 km (0.089 R)
• M13: 10,008,397 km (0.096 R)
• M14: 11,252,752 km (0.099 R)
• M15: 13,049,871 km (0.109 R)
• M16: 13,748,643 km (0.082 R)
• M17: 14,968,464 km (0.116 R)
• M18: 16,593,396 km (0.079 R)
• M19: 17,344,377 km (0.037 R)
• M20: 19,809,750 km (0.051 R)
• M21: 21,765,593 km (0.098 R)
• M22: 22,335,560 km (0.093 R)
• M23: 22,748,750 km (0.103 R)
• M24: 24,105,602 km (0.096 R)
• M25: 25,069,162 km (0.063 R)
• M26: 29,083,771 km (0.1 R)
• M27: 32,441,495 km (0.106 R)
• M28: 33,292,857 km (0.115 R)
• M29: 35,040,160 km (0.079 R)
• M30: 37,309,410 km (0.081 R)
• M31: 40,648,584 km (0.114 R)

Kuiper Belt

Range: 30 - 56 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 298 - 13,994 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit