🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.44 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.87 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.2

Radius: 0.53

Gravity: 0.71 G

Time & Orbit

Eccentricity (e): 0.043

Orbit Range: 0.83 AU - 0.91 AU

Year: 301 Days

Day: 31.1 Hours

Environment

Temp: 145 °C

Axial Tilt: 33.8 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 1.05 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.6

Radius: 1.21

Gravity: 1.09 G

Time & Orbit

Eccentricity (e): 0.045

Orbit Range: 1 AU - 1.1 AU

Year: 399 Days

Day: 12.7 Hours

Environment

Temp: 25 °C

Axial Tilt: 19 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Planet 3 - Terrestrial

Semi-Major Axis: 1.85 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.74

Radius: 1.69

Gravity: 1.31 G

Time & Orbit

Eccentricity (e): 0.097

Orbit Range: 1.67 AU - 2.03 AU

Year: 933 Days

Day: 31.3 Hours

Environment

Temp: -64 °C

Axial Tilt: 14.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 4 - Terrestrial

Semi-Major Axis: 2.43 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.68

Radius: 1.23

Gravity: 1.11 G

Time & Orbit

Eccentricity (e): 0.179

Orbit Range: 2 AU - 2.86 AU

Year: 1405 Days

Day: 21.9 Hours

Environment

Temp: -96 °C

Axial Tilt: 26.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 5 - Terrestrial

Semi-Major Axis: 3.4 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.63

Radius: 1.22

Gravity: 1.1 G

Time & Orbit

Eccentricity (e): 0.138

Orbit Range: 2.93 AU - 3.87 AU

Year: 2325 Days

Day: 17.6 Hours

Environment

Temp: -112 °C

Axial Tilt: 25.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Asteroid Belt

Center: 4.59 AU

Composition

Type: Main (Rocky/Icy Mix)

A dense region of planetesimals and debris.

Boundary

Planet 6 - Gas Giant

Semi-Major Axis: 5.78 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 196.3

Radius: 8.4

Gravity: 2.78 G

Time & Orbit

Eccentricity (e): 0.13

Orbit Range: 5.03 AU - 6.53 AU

Year: 5153 Days

Day: 11.2 Hours

Environment

Temp: -141 °C

Axial Tilt: 36.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 45,796,583 km

• M1: 106,214 km (0.052 R)
• M2: 427,850 km (0.034 R)
• M3: 884,871 km (0.061 R)
• M4: 1,187,358 km (0.078 R)
• M5: 1,655,749 km (0.043 R)
• M6: 2,409,872 km (0.086 R)
• M7: 2,707,123 km (0.116 R)
• M8: 3,233,857 km (0.064 R)
• M9: 3,986,484 km (0.068 R)
• M10: 4,469,536 km (0.076 R)
• M11: 5,783,304 km (0.114 R)
• M12: 6,656,956 km (0.108 R)
• M13: 7,901,460 km (0.087 R)
• M14: 8,561,935 km (0.111 R)
• M15: 9,330,270 km (0.075 R)
• M16: 10,068,086 km (0.113 R)
• M17: 10,451,206 km (0.12 R)
• M18: 10,963,878 km (0.108 R)
• M19: 12,167,842 km (0.069 R)
• M20: 13,642,578 km (0.106 R)
• M21: 14,495,435 km (0.044 R)
• M22: 14,984,321 km (0.067 R)
• M23: 15,534,692 km (0.061 R)
• M24: 17,595,402 km (0.025 R)
• M25: 19,299,771 km (0.073 R)

Planet 7 - Gas Giant

Semi-Major Axis: 8.07 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 291

Radius: 12

Gravity: 2.02 G

Time & Orbit

Eccentricity (e): 0.114

Orbit Range: 7.15 AU - 8.99 AU

Year: 8502 Days

Day: 14 Hours

Environment

Temp: -167 °C

Axial Tilt: 26.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 45,796,583 km

• M1: 151,094 km (0.071 R)
• M2: 702,063 km (0.075 R)
• M3: 1,194,090 km (0.107 R)
• M4: 1,901,539 km (0.12 R)
• M5: 2,335,372 km (0.037 R)
• M6: 2,872,578 km (0.109 R)
• M7: 4,369,006 km (0.097 R)
• M8: 6,141,741 km (0.117 R)
• M9: 11,048,551 km (0.104 R)
• M10: 11,865,654 km (0.058 R)
• M11: 12,930,193 km (0.099 R)
• M12: 14,112,614 km (0.09 R)
• M13: 14,901,743 km (0.095 R)
• M14: 19,227,515 km (0.119 R)
• M15: 21,491,978 km (0.086 R)
• M16: 23,536,532 km (0.068 R)
• M17: 24,888,598 km (0.057 R)
• M18: 27,399,748 km (0.054 R)
• M19: 30,259,760 km (0.106 R)

Planet 8 - Gas Giant

Semi-Major Axis: 10.71 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 353.6

Radius: 13.2

Gravity: 2.03 G

Time & Orbit

Eccentricity (e): 0.21

Orbit Range: 8.46 AU - 12.96 AU

Year: 12998 Days

Day: 12.5 Hours

Environment

Temp: -178 °C

Axial Tilt: 11.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (26)

Outer Limit: 45,796,583 km

• M1: 164,109 km (0.026 R)
• M2: 617,690 km (0.101 R)
• M3: 1,254,229 km (0.106 R)
• M4: 1,673,551 km (0.112 R)
• M5: 2,103,944 km (0.119 R)
• M6: 2,747,963 km (0.086 R)
• M7: 4,406,106 km (0.088 R)
• M8: 5,698,781 km (0.107 R)
• M9: 6,957,797 km (0.066 R)
• M10: 7,510,412 km (0.026 R)
• M11: 10,219,180 km (0.092 R)
• M12: 12,182,652 km (0.104 R)
• M13: 12,638,178 km (0.11 R)
• M14: 14,073,868 km (0.117 R)
• M15: 15,883,255 km (0.093 R)
• M16: 16,774,110 km (0.038 R)
• M17: 17,625,771 km (0.112 R)
• M18: 20,754,311 km (0.109 R)
• M19: 25,140,820 km (0.115 R)
• M20: 30,734,284 km (0.108 R)
• M21: 34,212,435 km (0.089 R)
• M22: 36,046,355 km (0.113 R)
• M23: 36,868,844 km (0.093 R)
• M24: 38,673,742 km (0.077 R)
• M25: 39,909,271 km (0.105 R)
• M26: 44,710,166 km (0.113 R)

Kuiper Belt

Range: 30 - 51 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 213 - 15,874 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit