🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.3 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.59 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.53

Radius: 1.83

Gravity: 1.35 G

Time & Orbit

Eccentricity (e): 0.02

Orbit Range: 0.58 AU - 0.6 AU

Year: 297 Days

Day: 13.5 Hours

Environment

Temp: -135 °C

Axial Tilt: 18.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.65 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.42

Radius: 1.81

Gravity: 1.35 G

Time & Orbit

Eccentricity (e): 0.068

Orbit Range: 0.61 AU - 0.69 AU

Year: 344 Days

Day: 44.2 Hours

Environment

Temp: -136 °C

Axial Tilt: 37.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Terrestrial

Semi-Major Axis: 0.66 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.12

Radius: 0.43

Gravity: 0.65 G

Time & Orbit

Eccentricity (e): 0.191

Orbit Range: 0.53 AU - 0.79 AU

Year: 352 Days

Day: 15.1 Hours

Environment

Temp: -132 °C

Axial Tilt: 27.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 4 - Gas Giant

Semi-Major Axis: 0.69 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 454.8

Radius: 9.5

Gravity: 5.04 G

Time & Orbit

Eccentricity (e): 0.133

Orbit Range: 0.6 AU - 0.78 AU

Year: 376 Days

Day: 9.4 Hours

Environment

Temp: -138 °C

Axial Tilt: 11.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 31,113,062 km

• M1: 119,678 km (0.088 R)
• M2: 449,841 km (0.082 R)
• M3: 776,413 km (0.091 R)
• M4: 1,126,173 km (0.053 R)
• M5: 1,700,928 km (0.041 R)
• M6: 3,310,900 km (0.113 R)
• M7: 3,645,850 km (0.093 R)
• M8: 4,090,455 km (0.03 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.85 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 133.4

Radius: 14.5

Gravity: 0.63 G

Time & Orbit

Eccentricity (e): 0.032

Orbit Range: 1.79 AU - 1.91 AU

Year: 1651 Days

Day: 11.9 Hours

Environment

Temp: -192 °C

Axial Tilt: 43.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 31,113,062 km

• M1: 181,163 km (0.113 R)
• M2: 799,451 km (0.053 R)
• M3: 1,533,827 km (0.115 R)
• M4: 2,334,774 km (0.096 R)
• M5: 3,010,208 km (0.103 R)
• M6: 3,973,319 km (0.116 R)
• M7: 4,891,551 km (0.103 R)
• M8: 5,698,033 km (0.102 R)
• M9: 6,344,745 km (0.074 R)
• M10: 6,866,841 km (0.065 R)
• M11: 7,669,284 km (0.113 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.83 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 894.1

Radius: 14.5

Gravity: 4.25 G

Time & Orbit

Eccentricity (e): 0.194

Orbit Range: 2.28 AU - 3.38 AU

Year: 3123 Days

Day: 10.2 Hours

Environment

Temp: -211 °C

Axial Tilt: 5.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 31,113,062 km

• M1: 181,612 km (0.09 R)
• M2: 928,404 km (0.098 R)
• M3: 1,915,750 km (0.115 R)
• M4: 3,743,388 km (0.095 R)
• M5: 4,474,024 km (0.115 R)
• M6: 6,998,637 km (0.107 R)
• M7: 7,705,637 km (0.057 R)
• M8: 9,376,346 km (0.073 R)
• M9: 9,997,027 km (0.094 R)
• M10: 12,342,423 km (0.118 R)
• M11: 15,139,155 km (0.085 R)
• M12: 16,103,912 km (0.099 R)
• M13: 17,453,584 km (0.05 R)
• M14: 18,454,393 km (0.091 R)
• M15: 19,743,179 km (0.067 R)
• M16: 22,362,937 km (0.12 R)

Planet 7 - Ice Giant

Semi-Major Axis: 7.63 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 98

Radius: 3.1

Gravity: 10.2 G

Time & Orbit

Eccentricity (e): 0.143

Orbit Range: 6.54 AU - 8.72 AU

Year: 13826 Days

Day: 18.1 Hours

Environment

Temp: -227 °C

Axial Tilt: 36 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (27)

Outer Limit: 31,113,062 km

• M1: 46,675 km (0.106 R)
• M2: 283,488 km (0.083 R)
• M3: 512,522 km (0.039 R)
• M4: 773,122 km (0.109 R)
• M5: 982,260 km (0.078 R)
• M6: 1,292,526 km (0.071 R)
• M7: 1,393,803 km (0.085 R)
• M8: 1,968,259 km (0.087 R)
• M9: 2,118,156 km (0.042 R)
• M10: 2,596,421 km (0.111 R)
• M11: 3,183,143 km (0.051 R)
• M12: 3,539,934 km (0.118 R)
• M13: 4,016,852 km (0.067 R)
• M14: 4,770,377 km (0.077 R)
• M15: 5,793,327 km (0.115 R)
• M16: 7,845,660 km (0.11 R)
• M17: 8,691,038 km (0.095 R)
• M18: 8,810,866 km (0.118 R)
• M19: 11,066,802 km (0.087 R)
• M20: 11,831,396 km (0.117 R)
• M21: 12,939,468 km (0.072 R)
• M22: 15,301,319 km (0.108 R)
• M23: 17,360,833 km (0.083 R)
• M24: 18,654,555 km (0.109 R)
• M25: 18,787,398 km (0.117 R)
• M26: 20,927,545 km (0.1 R)
• M27: 25,357,437 km (0.119 R)

Kuiper Belt

Range: 30 - 53 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 552 - 12,956 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit