🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.42 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.84 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.42

Radius: 1.15

Gravity: 1.07 G

Time & Orbit

Eccentricity (e): 0.216

Orbit Range: 0.66 AU - 1.02 AU

Year: 320 Days

Day: 41.9 Hours

Environment

Temp: -1 °C

Axial Tilt: 31.9 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Planet 2 - Terrestrial

Semi-Major Axis: 0.93 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.09

Radius: 1.76

Gravity: 1.32 G

Time & Orbit

Eccentricity (e): 0.025

Orbit Range: 0.91 AU - 0.95 AU

Year: 373 Days

Day: 21.3 Hours

Environment

Temp: -31 °C

Axial Tilt: 13.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 100,742,149 km

• M1: 101,876 km (0.118 R)

Planet 3 - Terrestrial

Semi-Major Axis: 0.99 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.34

Radius: 1.41

Gravity: 1.18 G

Time & Orbit

Eccentricity (e): 0.074

Orbit Range: 0.92 AU - 1.06 AU

Year: 410 Days

Day: 47.1 Hours

Environment

Temp: -35 °C

Axial Tilt: 34.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 4 - Terrestrial

Semi-Major Axis: 1.25 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.84

Radius: 1.28

Gravity: 1.12 G

Time & Orbit

Eccentricity (e): 0.197

Orbit Range: 1 AU - 1.5 AU

Year: 582 Days

Day: 18.4 Hours

Environment

Temp: -61 °C

Axial Tilt: 33.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 5 - Terrestrial

Semi-Major Axis: 1.86 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.99

Radius: 1.74

Gravity: 1.32 G

Time & Orbit

Eccentricity (e): 0.069

Orbit Range: 1.73 AU - 1.99 AU

Year: 1056 Days

Day: 21.7 Hours

Environment

Temp: -94 °C

Axial Tilt: 36.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 6 - Gas Giant

Semi-Major Axis: 3.6 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 934.3

Radius: 11.3

Gravity: 7.32 G

Time & Orbit

Eccentricity (e): 0.054

Orbit Range: 3.41 AU - 3.79 AU

Year: 2843 Days

Day: 5.1 Hours

Environment

Temp: -139 °C

Axial Tilt: 17.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 100,742,149 km

• M1: 140,622 km (0.117 R)
• M2: 663,766 km (0.096 R)
• M3: 1,242,261 km (0.046 R)
• M4: 1,646,773 km (0.078 R)
• M5: 2,139,998 km (0.048 R)
• M6: 2,557,974 km (0.105 R)
• M7: 3,427,287 km (0.063 R)
• M8: 3,899,867 km (0.077 R)
• M9: 4,438,120 km (0.046 R)
• M10: 5,099,492 km (0.108 R)
• M11: 6,017,275 km (0.077 R)
• M12: 8,702,557 km (0.087 R)
• M13: 9,397,439 km (0.041 R)
• M14: 11,792,800 km (0.068 R)
• M15: 12,921,067 km (0.112 R)
• M16: 16,462,797 km (0.092 R)
• M17: 17,128,956 km (0.096 R)
• M18: 18,396,798 km (0.067 R)
• M19: 18,753,140 km (0.095 R)
• M20: 21,509,481 km (0.04 R)

Planet 7 - Gas Giant

Semi-Major Axis: 5.47 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 712.4

Radius: 8.5

Gravity: 9.86 G

Time & Orbit

Eccentricity (e): 0.208

Orbit Range: 4.33 AU - 6.61 AU

Year: 5325 Days

Day: 8.4 Hours

Environment

Temp: -170 °C

Axial Tilt: 13.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 100,742,149 km

• M1: 105,766 km (0.109 R)
• M2: 567,724 km (0.053 R)
• M3: 1,090,120 km (0.109 R)
• M4: 1,504,506 km (0.036 R)
• M5: 1,850,675 km (0.09 R)
• M6: 3,261,832 km (0.117 R)
• M7: 4,080,581 km (0.105 R)
• M8: 4,474,622 km (0.047 R)
• M9: 4,975,176 km (0.086 R)
• M10: 5,994,686 km (0.091 R)
• M11: 6,406,978 km (0.114 R)
• M12: 6,871,928 km (0.098 R)
• M13: 8,095,040 km (0.089 R)
• M14: 9,165,114 km (0.084 R)
• M15: 10,016,475 km (0.09 R)
• M16: 11,439,151 km (0.103 R)
• M17: 12,324,321 km (0.049 R)
• M18: 13,360,735 km (0.115 R)
• M19: 17,320,142 km (0.074 R)
• M20: 19,911,626 km (0.12 R)
• M21: 20,402,606 km (0.103 R)
• M22: 20,758,350 km (0.109 R)
• M23: 21,335,948 km (0.092 R)
• M24: 21,702,462 km (0.114 R)
• M25: 29,852,255 km (0.027 R)

Planet 8 - Gas Giant

Semi-Major Axis: 8.94 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 701.4

Radius: 11.1

Gravity: 5.69 G

Time & Orbit

Eccentricity (e): 0.006

Orbit Range: 8.89 AU - 8.99 AU

Year: 11126 Days

Day: 9.9 Hours

Environment

Temp: -197 °C

Axial Tilt: 2.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 100,742,149 km

• M1: 139,126 km (0.118 R)
• M2: 539,600 km (0.072 R)
• M3: 995,873 km (0.105 R)
• M4: 1,534,874 km (0.079 R)
• M5: 2,065,797 km (0.114 R)
• M6: 3,136,768 km (0.08 R)
• M7: 4,545,232 km (0.037 R)
• M8: 5,108,468 km (0.068 R)
• M9: 8,982,754 km (0.052 R)
• M10: 9,871,515 km (0.118 R)
• M11: 14,743,469 km (0.115 R)
• M12: 15,216,048 km (0.111 R)
• M13: 19,288,401 km (0.102 R)
• M14: 22,849,429 km (0.06 R)
• M15: 23,300,616 km (0.055 R)
• M16: 24,879,323 km (0.081 R)
• M17: 29,083,771 km (0.111 R)
• M18: 31,353,619 km (0.114 R)
• M19: 33,045,721 km (0.091 R)
• M20: 33,391,292 km (0.082 R)
• M21: 36,734,206 km (0.07 R)
• M22: 37,478,455 km (0.061 R)
• M23: 43,384,878 km (0.066 R)
• M24: 47,649,764 km (0.056 R)

Planet 9 - Ice Giant

Semi-Major Axis: 14.19 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 197.8

Radius: 5.2

Gravity: 7.32 G

Time & Orbit

Eccentricity (e): 0.202

Orbit Range: 11.32 AU - 17.06 AU

Year: 22249 Days

Day: 23.2 Hours

Environment

Temp: -213 °C

Axial Tilt: 31.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 100,742,149 km

• M1: 77,492 km (0.081 R)
• M2: 348,713 km (0.107 R)
• M3: 2,279,273 km (0.091 R)
• M4: 4,473,276 km (0.115 R)
• M5: 5,452,244 km (0.098 R)
• M6: 5,735,732 km (0.059 R)
• M7: 6,103,892 km (0.03 R)
• M8: 8,323,177 km (0.098 R)
• M9: 8,509,725 km (0.06 R)
• M10: 10,424,728 km (0.066 R)
• M11: 13,873,557 km (0.108 R)
• M12: 16,212,520 km (0.113 R)
• M13: 17,247,737 km (0.103 R)
• M14: 19,448,770 km (0.056 R)
• M15: 22,096,353 km (0.106 R)
• M16: 25,756,265 km (0.104 R)
• M17: 29,583,428 km (0.074 R)
• M18: 46,596,296 km (0.101 R)

Planet 10 - Ice Giant

Semi-Major Axis: 17.25 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 715.1

Radius: 5

Gravity: 28.6 G

Time & Orbit

Eccentricity (e): 0.153

Orbit Range: 14.61 AU - 19.89 AU

Year: 29821 Days

Day: 17.1 Hours

Environment

Temp: -208 °C

Axial Tilt: 47.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (31)

Outer Limit: 100,742,149 km

• M1: 62,233 km (0.064 R)
• M2: 381,923 km (0.117 R)
• M3: 565,630 km (0.096 R)
• M4: 1,007,990 km (0.097 R)
• M5: 1,831,676 km (0.043 R)
• M6: 2,225,268 km (0.073 R)
• M7: 2,467,168 km (0.025 R)
• M8: 3,209,024 km (0.048 R)
• M9: 3,881,317 km (0.11 R)
• M10: 4,054,252 km (0.086 R)
• M11: 5,245,051 km (0.108 R)
• M12: 6,700,937 km (0.091 R)
• M13: 7,001,180 km (0.073 R)
• M14: 15,221,434 km (0.109 R)
• M15: 18,124,829 km (0.098 R)
• M16: 19,302,464 km (0.072 R)
• M17: 20,739,800 km (0.097 R)
• M18: 22,246,849 km (0.107 R)
• M19: 27,584,052 km (0.076 R)
• M20: 30,614,905 km (0.086 R)
• M21: 44,258,231 km (0.112 R)
• M22: 45,668,640 km (0.092 R)
• M23: 47,290,879 km (0.118 R)
• M24: 52,387,379 km (0.048 R)
• M25: 54,364,165 km (0.064 R)
• M26: 58,046,816 km (0.092 R)
• M27: 65,449,966 km (0.028 R)
• M28: 66,131,833 km (0.117 R)
• M29: 85,296,816 km (0.066 R)
• M30: 92,519,551 km (0.044 R)
• M31: 94,531,642 km (0.103 R)

Kuiper Belt

Range: 30 - 47 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 357 - 19,786 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit