🌌 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: 2.12

Radius: 1.35

Gravity: 1.16 G

Time & Orbit

Eccentricity (e): 0.131

Orbit Range: 0.45 AU - 0.59 AU

Year: 238 Days

Day: 27.8 Hours

Environment

Temp: -128 °C

Axial Tilt: 17 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.61 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.54

Radius: 1.83

Gravity: 1.36 G

Time & Orbit

Eccentricity (e): 0.015

Orbit Range: 0.6 AU - 0.62 AU

Year: 303 Days

Day: 41.8 Hours

Environment

Temp: -119 °C

Axial Tilt: 42.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 46,924,667 km

• M1: 46,076 km (0.077 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.76 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 905.3

Radius: 14.9

Gravity: 4.08 G

Time & Orbit

Eccentricity (e): 0.074

Orbit Range: 0.7 AU - 0.82 AU

Year: 421 Days

Day: 14.7 Hours

Environment

Temp: -148 °C

Axial Tilt: 41.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 46,924,667 km

• M1: 185,352 km (0.101 R)
• M2: 752,477 km (0.098 R)
• M3: 1,276,967 km (0.07 R)
• M4: 2,361,103 km (0.037 R)
• M5: 2,931,819 km (0.113 R)
• M6: 4,633,046 km (0.062 R)
• M7: 6,368,531 km (0.105 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.96 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 143.9

Radius: 14.1

Gravity: 0.72 G

Time & Orbit

Eccentricity (e): 0.085

Orbit Range: 0.88 AU - 1.04 AU

Year: 598 Days

Day: 8.1 Hours

Environment

Temp: -166 °C

Axial Tilt: 27.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 46,924,667 km

• M1: 175,329 km (0.067 R)
• M2: 652,546 km (0.109 R)
• M3: 1,377,796 km (0.099 R)
• M4: 2,332,829 km (0.11 R)
• M5: 3,064,512 km (0.085 R)
• M6: 3,945,345 km (0.103 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.61 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 572

Radius: 14.4

Gravity: 2.76 G

Time & Orbit

Eccentricity (e): 0.098

Orbit Range: 1.45 AU - 1.77 AU

Year: 1299 Days

Day: 11.3 Hours

Environment

Temp: -174 °C

Axial Tilt: 34.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 46,924,667 km

• M1: 179,069 km (0.118 R)
• M2: 702,063 km (0.111 R)
• M3: 1,377,647 km (0.1 R)
• M4: 2,234,843 km (0.083 R)
• M5: 2,817,377 km (0.104 R)
• M6: 3,338,127 km (0.108 R)
• M7: 3,826,414 km (0.074 R)
• M8: 4,275,657 km (0.112 R)
• M9: 4,778,904 km (0.056 R)
• M10: 5,692,498 km (0.103 R)
• M11: 7,504,727 km (0.096 R)
• M12: 8,543,385 km (0.049 R)
• M13: 10,485,165 km (0.099 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.32 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 763.4

Radius: 8.4

Gravity: 10.82 G

Time & Orbit

Eccentricity (e): 0.097

Orbit Range: 2.09 AU - 2.55 AU

Year: 2247 Days

Day: 13.5 Hours

Environment

Temp: -195 °C

Axial Tilt: 8.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 46,924,667 km

• M1: 107,561 km (0.062 R)
• M2: 421,716 km (0.027 R)
• M3: 731,384 km (0.055 R)
• M4: 1,114,504 km (0.09 R)
• M5: 1,476,830 km (0.025 R)
• M6: 1,790,836 km (0.087 R)
• M7: 2,512,795 km (0.105 R)
• M8: 2,777,434 km (0.115 R)
• M9: 3,893,434 km (0.097 R)
• M10: 4,249,627 km (0.099 R)
• M11: 5,073,612 km (0.109 R)
• M12: 5,474,983 km (0.103 R)
• M13: 7,006,416 km (0.087 R)
• M14: 8,474,271 km (0.114 R)
• M15: 9,918,040 km (0.071 R)
• M16: 10,396,304 km (0.064 R)
• M17: 10,774,637 km (0.107 R)
• M18: 11,923,997 km (0.099 R)
• M19: 12,507,280 km (0.094 R)
• M20: 13,640,783 km (0.094 R)
• M21: 14,464,618 km (0.103 R)
• M22: 15,369,835 km (0.084 R)
• M23: 16,160,908 km (0.073 R)
• M24: 16,720,404 km (0.05 R)
• M25: 17,663,619 km (0.046 R)

Planet 7 - Gas Giant

Semi-Major Axis: 4.81 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 810.7

Radius: 13.7

Gravity: 4.32 G

Time & Orbit

Eccentricity (e): 0.143

Orbit Range: 4.12 AU - 5.5 AU

Year: 6707 Days

Day: 14.7 Hours

Environment

Temp: -224 °C

Axial Tilt: 22.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (28)

Outer Limit: 46,924,667 km

• M1: 170,392 km (0.107 R)
• M2: 622,776 km (0.065 R)
• M3: 1,173,446 km (0.089 R)
• M4: 1,663,977 km (0.077 R)
• M5: 2,193,853 km (0.057 R)
• M6: 3,097,873 km (0.104 R)
• M7: 3,555,941 km (0.109 R)
• M8: 4,341,929 km (0.099 R)
• M9: 4,861,781 km (0.096 R)
• M10: 5,484,557 km (0.069 R)
• M11: 5,928,863 km (0.12 R)
• M12: 6,747,163 km (0.053 R)
• M13: 7,600,769 km (0.05 R)
• M14: 9,842,044 km (0.117 R)
• M15: 10,940,541 km (0.106 R)
• M16: 11,442,891 km (0.11 R)
• M17: 12,821,734 km (0.106 R)
• M18: 13,267,686 km (0.087 R)
• M19: 18,525,901 km (0.08 R)
• M20: 19,168,574 km (0.082 R)
• M21: 20,726,336 km (0.118 R)
• M22: 21,889,609 km (0.099 R)
• M23: 25,291,315 km (0.082 R)
• M24: 27,163,533 km (0.058 R)
• M25: 31,990,457 km (0.08 R)
• M26: 34,713,438 km (0.111 R)
• M27: 35,472,198 km (0.087 R)
• M28: 38,387,711 km (0.12 R)

Planet 8 - Ice Giant

Semi-Major Axis: 7.16 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 433.1

Radius: 3.3

Gravity: 39.77 G

Time & Orbit

Eccentricity (e): 0.136

Orbit Range: 6.19 AU - 8.13 AU

Year: 12182 Days

Day: 18.8 Hours

Environment

Temp: -221 °C

Axial Tilt: 18.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 46,924,667 km

• M1: 41,289 km (0.072 R)
• M2: 175,329 km (0.055 R)
• M3: 827,575 km (0.059 R)
• M4: 943,514 km (0.07 R)
• M5: 2,553,187 km (0.059 R)
• M6: 2,865,098 km (0.106 R)
• M7: 3,489,819 km (0.11 R)
• M8: 8,677,873 km (0.089 R)
• M9: 11,652,926 km (0.069 R)
• M10: 11,764,077 km (0.098 R)
• M11: 11,932,375 km (0.079 R)
• M12: 18,962,428 km (0.099 R)
• M13: 30,807,737 km (0.118 R)
• M14: 39,481,122 km (0.12 R)

Kuiper Belt

Range: 30 - 60 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 254 - 17,571 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit