🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.3 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.59 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.87

Radius: 1.28

Gravity: 1.14 G

Time & Orbit

Eccentricity (e): 0.2

Orbit Range: 0.47 AU - 0.71 AU

Year: 166 Days

Day: 36.8 Hours

Environment

Temp: 199 °C

Axial Tilt: 12 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 0.63 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.32

Radius: 1.12

Gravity: 1.05 G

Time & Orbit

Eccentricity (e): 0.168

Orbit Range: 0.52 AU - 0.74 AU

Year: 184 Days

Day: 42.2 Hours

Environment

Temp: 147 °C

Axial Tilt: 16.2 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 3 - Terrestrial

Semi-Major Axis: 0.71 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.25

Radius: 1.6

Gravity: 1.27 G

Time & Orbit

Eccentricity (e): 0.102

Orbit Range: 0.64 AU - 0.78 AU

Year: 220 Days

Day: 42 Hours

Environment

Temp: 107 °C

Axial Tilt: 6.2 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 4 - Terrestrial

Semi-Major Axis: 1.34 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.92

Radius: 1.73

Gravity: 1.31 G

Time & Orbit

Eccentricity (e): 0.223

Orbit Range: 1.04 AU - 1.64 AU

Year: 569 Days

Day: 32.8 Hours

Environment

Temp: -16 °C

Axial Tilt: 3.4 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Planet 5 - Terrestrial

Semi-Major Axis: 1.58 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.47

Radius: 0.74

Gravity: 0.86 G

Time & Orbit

Eccentricity (e): 0.168

Orbit Range: 1.31 AU - 1.85 AU

Year: 729 Days

Day: 30 Hours

Environment

Temp: -36 °C

Axial Tilt: 46.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Asteroid Belt

Center: 3.59 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 6 - Gas Giant

Semi-Major Axis: 5.6 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 909.9

Radius: 10.8

Gravity: 7.8 G

Time & Orbit

Eccentricity (e): 0.144

Orbit Range: 4.79 AU - 6.41 AU

Year: 4865 Days

Day: 5.4 Hours

Environment

Temp: -146 °C

Axial Tilt: 46.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (29)

Outer Limit: 44,450,562 km

• M1: 134,339 km (0.1 R)
• M2: 917,783 km (0.101 R)
• M3: 1,321,996 km (0.082 R)
• M4: 1,887,327 km (0.048 R)
• M5: 2,470,908 km (0.105 R)
• M6: 2,861,658 km (0.119 R)
• M7: 3,273,052 km (0.028 R)
• M8: 3,976,311 km (0.116 R)
• M9: 5,330,771 km (0.091 R)
• M10: 6,050,785 km (0.099 R)
• M11: 7,429,180 km (0.098 R)
• M12: 8,327,665 km (0.092 R)
• M13: 8,762,994 km (0.111 R)
• M14: 10,612,473 km (0.108 R)
• M15: 11,507,367 km (0.112 R)
• M16: 11,998,198 km (0.102 R)
• M17: 12,554,253 km (0.096 R)
• M18: 13,555,213 km (0.097 R)
• M19: 17,899,535 km (0.1 R)
• M20: 18,293,276 km (0.089 R)
• M21: 18,827,341 km (0.112 R)
• M22: 19,578,621 km (0.105 R)
• M23: 19,996,747 km (0.05 R)
• M24: 21,068,317 km (0.119 R)
• M25: 23,638,259 km (0.103 R)
• M26: 26,664,773 km (0.076 R)
• M27: 29,301,436 km (0.057 R)
• M28: 29,665,557 km (0.106 R)
• M29: 31,914,611 km (0.116 R)

Planet 7 - Gas Giant

Semi-Major Axis: 10.07 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 480.7

Radius: 8.7

Gravity: 6.35 G

Time & Orbit

Eccentricity (e): 0.174

Orbit Range: 8.32 AU - 11.82 AU

Year: 11731 Days

Day: 10.1 Hours

Environment

Temp: -174 °C

Axial Tilt: 35.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (34)

Outer Limit: 44,450,562 km

• M1: 108,907 km (0.085 R)
• M2: 1,179,579 km (0.075 R)
• M3: 1,475,933 km (0.103 R)
• M4: 1,776,176 km (0.097 R)
• M5: 2,134,911 km (0.088 R)
• M6: 3,318,530 km (0.094 R)
• M7: 4,025,978 km (0.079 R)
• M8: 4,953,485 km (0.096 R)
• M9: 5,703,568 km (0.106 R)
• M10: 6,452,605 km (0.083 R)
• M11: 7,225,428 km (0.109 R)
• M12: 9,668,959 km (0.119 R)
• M13: 11,049,897 km (0.067 R)
• M14: 11,373,777 km (0.112 R)
• M15: 12,268,671 km (0.12 R)
• M16: 13,884,029 km (0.096 R)
• M17: 16,252,163 km (0.089 R)
• M18: 17,825,035 km (0.097 R)
• M19: 18,270,986 km (0.119 R)
• M20: 19,030,794 km (0.096 R)
• M21: 20,290,258 km (0.106 R)
• M22: 20,858,282 km (0.113 R)
• M23: 21,436,926 km (0.076 R)
• M24: 22,111,313 km (0.097 R)
• M25: 24,858,678 km (0.084 R)
• M26: 25,791,421 km (0.092 R)
• M27: 28,124,998 km (0.119 R)
• M28: 28,426,139 km (0.032 R)
• M29: 31,342,699 km (0.102 R)
• M30: 38,129,655 km (0.077 R)
• M31: 40,507,962 km (0.117 R)
• M32: 42,983,358 km (0.036 R)
• M33: 43,920,289 km (0.043 R)
• M34: 47,094,457 km (0.069 R)

Planet 8 - Ice Giant

Semi-Major Axis: 13.92 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 150.3

Radius: 5.5

Gravity: 4.97 G

Time & Orbit

Eccentricity (e): 0.207

Orbit Range: 11.04 AU - 16.8 AU

Year: 19065 Days

Day: 17.7 Hours

Environment

Temp: -186 °C

Axial Tilt: 45.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 44,450,562 km

• M1: 68,366 km (0.097 R)
• M2: 314,455 km (0.1 R)
• M3: 560,543 km (0.038 R)
• M4: 804,388 km (0.074 R)
• M5: 1,677,890 km (0.044 R)
• M6: 2,660,748 km (0.096 R)
• M7: 8,073,199 km (0.05 R)
• M8: 8,461,854 km (0.089 R)
• M9: 11,540,129 km (0.091 R)
• M10: 16,427,791 km (0.056 R)
• M11: 20,330,351 km (0.032 R)
• M12: 23,830,043 km (0.114 R)
• M13: 26,467,902 km (0.053 R)
• M14: 27,420,841 km (0.105 R)
• M15: 28,693,620 km (0.104 R)
• M16: 29,294,255 km (0.115 R)

Kuiper Belt

Range: 30 - 57 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 507 - 15,051 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit