🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.29 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.57 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.86

Radius: 1.28

Gravity: 1.14 G

Time & Orbit

Eccentricity (e): 0.217

Orbit Range: 0.45 AU - 0.69 AU

Year: 282 Days

Day: 38.8 Hours

Environment

Temp: -135 °C

Axial Tilt: 15.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.6 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.66

Radius: 0.85

Gravity: 0.91 G

Time & Orbit

Eccentricity (e): 0.022

Orbit Range: 0.59 AU - 0.61 AU

Year: 305 Days

Day: 17.9 Hours

Environment

Temp: -127 °C

Axial Tilt: 17.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.69 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 57.9

Radius: 12.5

Gravity: 0.37 G

Time & Orbit

Eccentricity (e): 0.125

Orbit Range: 0.6 AU - 0.78 AU

Year: 376 Days

Day: 12.5 Hours

Environment

Temp: -129 °C

Axial Tilt: 23.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (4)

Outer Limit: 65,553,219 km

• M1: 185,202 km (0.063 R)
• M2: 629,508 km (0.096 R)
• M3: 1,538,764 km (0.06 R)
• M4: 1,999,076 km (0.056 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.96 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 270.1

Radius: 12.2

Gravity: 1.81 G

Time & Orbit

Eccentricity (e): 0.064

Orbit Range: 0.9 AU - 1.02 AU

Year: 617 Days

Day: 12.2 Hours

Environment

Temp: -158 °C

Axial Tilt: 38.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 65,553,219 km

• M1: 152,141 km (0.104 R)
• M2: 584,928 km (0.08 R)
• M3: 1,393,055 km (0.095 R)
• M4: 1,966,614 km (0.051 R)
• M5: 3,203,190 km (0.1 R)
• M6: 3,813,399 km (0.101 R)
• M7: 4,584,427 km (0.047 R)
• M8: 5,143,923 km (0.115 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.11 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 903.6

Radius: 8.3

Gravity: 13.12 G

Time & Orbit

Eccentricity (e): 0.187

Orbit Range: 0.9 AU - 1.32 AU

Year: 767 Days

Day: 5.8 Hours

Environment

Temp: -155 °C

Axial Tilt: 43.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 65,553,219 km

• M1: 103,223 km (0.044 R)
• M2: 388,356 km (0.112 R)
• M3: 750,233 km (0.089 R)
• M4: 1,084,136 km (0.107 R)
• M5: 1,461,721 km (0.083 R)
• M6: 1,769,593 km (0.101 R)
• M7: 2,541,219 km (0.084 R)
• M8: 3,133,926 km (0.096 R)
• M9: 3,392,880 km (0.108 R)
• M10: 3,861,420 km (0.107 R)
• M11: 4,208,039 km (0.077 R)
• M12: 4,838,145 km (0.067 R)
• M13: 5,490,541 km (0.057 R)
• M14: 5,787,642 km (0.095 R)
• M15: 7,015,841 km (0.076 R)
• M16: 7,485,279 km (0.113 R)
• M17: 9,267,738 km (0.055 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.18 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 678.4

Radius: 10.1

Gravity: 6.65 G

Time & Orbit

Eccentricity (e): 0.148

Orbit Range: 1.01 AU - 1.35 AU

Year: 841 Days

Day: 13.2 Hours

Environment

Temp: -175 °C

Axial Tilt: 31.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 65,553,219 km

• M1: 125,662 km (0.08 R)
• M2: 558,299 km (0.1 R)
• M3: 911,949 km (0.117 R)
• M4: 1,434,344 km (0.058 R)
• M5: 1,954,945 km (0.097 R)
• M6: 2,291,690 km (0.091 R)
• M7: 2,932,118 km (0.116 R)
• M8: 3,820,580 km (0.06 R)
• M9: 4,143,263 km (0.043 R)
• M10: 4,950,194 km (0.116 R)
• M11: 5,939,035 km (0.086 R)
• M12: 6,373,767 km (0.062 R)
• M13: 6,741,179 km (0.12 R)
• M14: 8,955,078 km (0.115 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.48 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 782.4

Radius: 12.8

Gravity: 4.78 G

Time & Orbit

Eccentricity (e): 0.094

Orbit Range: 3.15 AU - 3.81 AU

Year: 4259 Days

Day: 12.7 Hours

Environment

Temp: -211 °C

Axial Tilt: 151.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 65,553,219 km

• M1: 159,172 km (0.029 R)
• M2: 637,885 km (0.045 R)
• M3: 1,049,130 km (0.039 R)
• M4: 2,032,736 km (0.1 R)
• M5: 2,448,768 km (0.117 R)
• M6: 2,886,491 km (0.078 R)
• M7: 3,477,103 km (0.106 R)
• M8: 5,059,101 km (0.057 R)
• M9: 7,077,625 km (0.094 R)
• M10: 9,026,885 km (0.08 R)
• M11: 10,641,944 km (0.056 R)
• M12: 12,152,583 km (0.031 R)
• M13: 12,637,430 km (0.057 R)
• M14: 13,084,727 km (0.025 R)
• M15: 14,926,128 km (0.109 R)
• M16: 16,168,687 km (0.104 R)
• M17: 20,242,836 km (0.065 R)
• M18: 27,607,090 km (0.102 R)
• M19: 28,192,766 km (0.116 R)

Planet 8 - Ice Giant

Semi-Major Axis: 7.63 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 916.6

Radius: 3.9

Gravity: 60.26 G

Time & Orbit

Eccentricity (e): 0.151

Orbit Range: 6.48 AU - 8.78 AU

Year: 13826 Days

Day: 19.3 Hours

Environment

Temp: -216 °C

Axial Tilt: 21.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (40)

Outer Limit: 65,553,219 km

• M1: 48,619 km (0.076 R)
• M2: 209,736 km (0.099 R)
• M3: 342,729 km (0.059 R)
• M4: 708,645 km (0.111 R)
• M5: 835,205 km (0.101 R)
• M6: 1,011,880 km (0.052 R)
• M7: 1,134,700 km (0.06 R)
• M8: 1,267,543 km (0.113 R)
• M9: 2,076,418 km (0.119 R)
• M10: 3,054,041 km (0.07 R)
• M11: 3,286,516 km (0.059 R)
• M12: 3,642,858 km (0.1 R)
• M13: 4,335,795 km (0.111 R)
• M14: 4,497,361 km (0.104 R)
• M15: 4,696,625 km (0.109 R)
• M16: 5,938,437 km (0.068 R)
• M17: 6,634,666 km (0.105 R)
• M18: 8,534,858 km (0.056 R)
• M19: 8,686,700 km (0.091 R)
• M20: 8,840,337 km (0.072 R)
• M21: 9,473,136 km (0.077 R)
• M22: 10,023,057 km (0.046 R)
• M23: 10,305,947 km (0.047 R)
• M24: 11,490,612 km (0.094 R)
• M25: 11,738,047 km (0.103 R)
• M26: 13,639,137 km (0.078 R)
• M27: 17,954,886 km (0.085 R)
• M28: 22,133,603 km (0.096 R)
• M29: 24,702,348 km (0.057 R)
• M30: 26,592,517 km (0.112 R)
• M31: 31,133,860 km (0.109 R)
• M32: 31,614,518 km (0.073 R)
• M33: 32,467,675 km (0.067 R)
• M34: 37,910,793 km (0.104 R)
• M35: 38,047,376 km (0.086 R)
• M36: 46,071,806 km (0.094 R)
• M37: 50,393,838 km (0.108 R)
• M38: 55,153,145 km (0.099 R)
• M39: 55,328,473 km (0.031 R)
• M40: 62,268,917 km (0.079 R)

Kuiper Belt

Range: 30 - 52 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 340 - 16,985 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit