🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.33 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.65 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.71

Radius: 1.49

Gravity: 1.22 G

Time & Orbit

Eccentricity (e): 0.174

Orbit Range: 0.54 AU - 0.76 AU

Year: 333 Days

Day: 15.3 Hours

Environment

Temp: -141 °C

Axial Tilt: 28.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.98 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 329.7

Radius: 11.7

Gravity: 2.41 G

Time & Orbit

Eccentricity (e): 0.063

Orbit Range: 0.92 AU - 1.04 AU

Year: 617 Days

Day: 13.2 Hours

Environment

Temp: -162 °C

Axial Tilt: 38.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 45,072,736 km

• M1: 145,858 km (0.092 R)
• M2: 569,220 km (0.067 R)
• M3: 954,285 km (0.118 R)
• M4: 2,201,033 km (0.084 R)
• M5: 2,776,836 km (0.095 R)
• M6: 3,535,147 km (0.12 R)
• M7: 3,911,386 km (0.098 R)
• M8: 4,701,113 km (0.075 R)
• M9: 5,095,303 km (0.062 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.37 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 491.2

Radius: 9

Gravity: 6.06 G

Time & Orbit

Eccentricity (e): 0.133

Orbit Range: 1.19 AU - 1.55 AU

Year: 1020 Days

Day: 6.8 Hours

Environment

Temp: -179 °C

Axial Tilt: 41.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 45,072,736 km

• M1: 112,049 km (0.108 R)
• M2: 459,714 km (0.099 R)
• M3: 1,187,059 km (0.086 R)
• M4: 1,512,734 km (0.045 R)
• M5: 1,879,847 km (0.03 R)
• M6: 2,295,579 km (0.099 R)
• M7: 2,711,761 km (0.113 R)
• M8: 3,326,159 km (0.112 R)
• M9: 3,800,384 km (0.117 R)
• M10: 4,286,278 km (0.098 R)
• M11: 4,638,731 km (0.102 R)
• M12: 7,129,685 km (0.109 R)
• M13: 7,649,837 km (0.102 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.07 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 33

Radius: 9.8

Gravity: 0.34 G

Time & Orbit

Eccentricity (e): 0.066

Orbit Range: 1.93 AU - 2.21 AU

Year: 1894 Days

Day: 8.3 Hours

Environment

Temp: -196 °C

Axial Tilt: 35.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 45,072,736 km

• M1: 132,095 km (0.088 R)
• M2: 455,825 km (0.051 R)
• M3: 922,570 km (0.106 R)
• M4: 1,576,911 km (0.098 R)
• M5: 2,971,911 km (0.109 R)
• M6: 3,579,129 km (0.041 R)
• M7: 4,842,483 km (0.073 R)
• M8: 5,275,569 km (0.06 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.07 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 406.9

Radius: 10

Gravity: 4.07 G

Time & Orbit

Eccentricity (e): 0.008

Orbit Range: 2.05 AU - 2.09 AU

Year: 1894 Days

Day: 7.1 Hours

Environment

Temp: -182 °C

Axial Tilt: 132 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 45,072,736 km

• M1: 124,914 km (0.106 R)
• M2: 748,737 km (0.105 R)
• M3: 1,134,849 km (0.053 R)
• M4: 1,473,539 km (0.077 R)
• M5: 2,050,837 km (0.086 R)
• M6: 2,473,302 km (0.099 R)
• M7: 3,353,386 km (0.032 R)
• M8: 3,672,777 km (0.095 R)
• M9: 4,486,141 km (0.117 R)
• M10: 5,037,260 km (0.078 R)
• M11: 6,838,418 km (0.111 R)
• M12: 7,542,276 km (0.106 R)
• M13: 8,851,856 km (0.111 R)
• M14: 9,784,000 km (0.105 R)
• M15: 11,409,680 km (0.091 R)

Planet 6 - Ice Giant

Semi-Major Axis: 8.65 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 254.9

Radius: 3.4

Gravity: 22.05 G

Time & Orbit

Eccentricity (e): 0.017

Orbit Range: 8.5 AU - 8.8 AU

Year: 16175 Days

Day: 20.3 Hours

Environment

Temp: -230 °C

Axial Tilt: 48.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (39)

Outer Limit: 45,072,736 km

• M1: 42,486 km (0.094 R)
• M2: 148,999 km (0.037 R)
• M3: 427,700 km (0.116 R)
• M4: 847,921 km (0.105 R)
• M5: 1,470,098 km (0.048 R)
• M6: 1,717,234 km (0.117 R)
• M7: 2,565,454 km (0.102 R)
• M8: 2,708,918 km (0.092 R)
• M9: 3,218,897 km (0.105 R)
• M10: 4,632,298 km (0.081 R)
• M11: 4,876,591 km (0.108 R)
• M12: 6,155,204 km (0.094 R)
• M13: 6,412,962 km (0.085 R)
• M14: 8,557,896 km (0.071 R)
• M15: 12,024,228 km (0.074 R)
• M16: 13,688,355 km (0.097 R)
• M17: 13,812,820 km (0.111 R)
• M18: 14,063,995 km (0.076 R)
• M19: 15,032,940 km (0.113 R)
• M20: 15,839,423 km (0.075 R)
• M21: 17,319,394 km (0.115 R)
• M22: 17,465,103 km (0.072 R)
• M23: 18,507,201 km (0.059 R)
• M24: 21,209,238 km (0.103 R)
• M25: 21,375,890 km (0.117 R)
• M26: 22,653,905 km (0.117 R)
• M27: 24,527,319 km (0.105 R)
• M28: 24,803,177 km (0.058 R)
• M29: 25,548,773 km (0.115 R)
• M30: 26,986,708 km (0.097 R)
• M31: 28,884,506 km (0.079 R)
• M32: 30,976,184 km (0.091 R)
• M33: 35,458,286 km (0.103 R)
• M34: 36,762,630 km (0.098 R)
• M35: 38,716,228 km (0.095 R)
• M36: 39,090,073 km (0.064 R)
• M37: 40,866,698 km (0.091 R)
• M38: 41,254,306 km (0.081 R)
• M39: 45,542,080 km (0.104 R)

Planet 7 - Ice Giant

Semi-Major Axis: 10.57 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 119.3

Radius: 3

Gravity: 13.26 G

Time & Orbit

Eccentricity (e): 0.014

Orbit Range: 10.42 AU - 10.72 AU

Year: 21850 Days

Day: 18.9 Hours

Environment

Temp: -228 °C

Axial Tilt: 9.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 45,072,736 km

• M1: 37,399 km (0.053 R)
• M2: 1,047,335 km (0.111 R)
• M3: 1,612,067 km (0.109 R)
• M4: 1,760,917 km (0.053 R)
• M5: 2,018,225 km (0.055 R)
• M6: 6,780,075 km (0.075 R)
• M7: 10,010,192 km (0.102 R)
• M8: 10,411,114 km (0.057 R)
• M9: 14,197,885 km (0.06 R)
• M10: 35,912,465 km (0.057 R)
• M11: 39,633,263 km (0.103 R)

Kuiper Belt

Range: 30 - 55 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 409 - 13,717 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit