🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.33 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.65 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.32

Radius: 0.63

Gravity: 0.81 G

Time & Orbit

Eccentricity (e): 0.217

Orbit Range: 0.51 AU - 0.79 AU

Year: 236 Days

Day: 32.7 Hours

Environment

Temp: -22 °C

Axial Tilt: 37.6 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Planet 2 - Terrestrial

Semi-Major Axis: 1.11 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.06

Radius: 1.34

Gravity: 1.15 G

Time & Orbit

Eccentricity (e): 0.023

Orbit Range: 1.08 AU - 1.14 AU

Year: 526 Days

Day: 33.3 Hours

Environment

Temp: -89 °C

Axial Tilt: 38 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 2.46 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 79.5

Radius: 14.8

Gravity: 0.36 G

Time & Orbit

Eccentricity (e): 0.066

Orbit Range: 2.3 AU - 2.62 AU

Year: 1735 Days

Day: 8.4 Hours

Environment

Temp: -132 °C

Axial Tilt: 29.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 50,072,412 km

• M1: 203,453 km (0.093 R)
• M2: 953,387 km (0.101 R)
• M3: 1,469,350 km (0.044 R)
• M4: 2,422,738 km (0.118 R)
• M5: 3,222,488 km (0.071 R)
• M6: 3,868,003 km (0.097 R)
• M7: 5,472,889 km (0.085 R)
• M8: 5,959,381 km (0.116 R)

Planet 4 - Gas Giant

Semi-Major Axis: 6.27 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 138.4

Radius: 14.9

Gravity: 0.62 G

Time & Orbit

Eccentricity (e): 0.017

Orbit Range: 6.16 AU - 6.38 AU

Year: 7059 Days

Day: 13.4 Hours

Environment

Temp: -181 °C

Axial Tilt: 47.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 50,072,412 km

• M1: 185,352 km (0.085 R)
• M2: 1,943,426 km (0.101 R)
• M3: 3,033,097 km (0.087 R)
• M4: 3,590,349 km (0.086 R)
• M5: 5,229,194 km (0.052 R)
• M6: 6,747,014 km (0.058 R)
• M7: 7,867,801 km (0.083 R)
• M8: 12,024,078 km (0.08 R)
• M9: 13,909,460 km (0.092 R)
• M10: 15,151,871 km (0.113 R)
• M11: 16,629,898 km (0.063 R)
• M12: 17,743,055 km (0.085 R)
• M13: 18,551,632 km (0.107 R)

Planet 5 - Ice Giant

Semi-Major Axis: 9.42 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 495.2

Radius: 6.2

Gravity: 12.88 G

Time & Orbit

Eccentricity (e): 0.122

Orbit Range: 8.27 AU - 10.57 AU

Year: 12999 Days

Day: 23.5 Hours

Environment

Temp: -204 °C

Axial Tilt: 32.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (33)

Outer Limit: 50,072,412 km

• M1: 77,193 km (0.097 R)
• M2: 311,164 km (0.117 R)
• M3: 578,495 km (0.109 R)
• M4: 1,084,136 km (0.12 R)
• M5: 1,472,342 km (0.073 R)
• M6: 2,327,593 km (0.105 R)
• M7: 2,524,314 km (0.111 R)
• M8: 3,278,288 km (0.037 R)
• M9: 3,813,699 km (0.093 R)
• M10: 4,346,716 km (0.07 R)
• M11: 4,585,474 km (0.044 R)
• M12: 7,229,317 km (0.099 R)
• M13: 8,088,458 km (0.105 R)
• M14: 11,183,189 km (0.069 R)
• M15: 12,748,282 km (0.106 R)
• M16: 14,388,174 km (0.097 R)
• M17: 16,449,333 km (0.092 R)
• M18: 16,957,068 km (0.101 R)
• M19: 18,543,404 km (0.106 R)
• M20: 19,014,189 km (0.119 R)
• M21: 21,574,407 km (0.108 R)
• M22: 22,447,011 km (0.068 R)
• M23: 30,292,222 km (0.06 R)
• M24: 30,726,505 km (0.035 R)
• M25: 31,718,638 km (0.099 R)
• M26: 35,539,517 km (0.062 R)
• M27: 35,901,395 km (0.09 R)
• M28: 39,013,180 km (0.108 R)
• M29: 40,831,841 km (0.081 R)
• M30: 47,205,010 km (0.111 R)
• M31: 48,376,959 km (0.091 R)
• M32: 48,821,415 km (0.106 R)
• M33: 49,119,264 km (0.091 R)

Planet 6 - Ice Giant

Semi-Major Axis: 11.05 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 916.6

Radius: 6.9

Gravity: 19.25 G

Time & Orbit

Eccentricity (e): 0.173

Orbit Range: 9.14 AU - 12.96 AU

Year: 16514 Days

Day: 21.1 Hours

Environment

Temp: -210 °C

Axial Tilt: 48.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 50,072,412 km

• M1: 100,231 km (0.105 R)
• M2: 387,758 km (0.101 R)
• M3: 1,442,123 km (0.053 R)
• M4: 2,411,667 km (0.043 R)
• M5: 3,086,354 km (0.096 R)
• M6: 3,611,592 km (0.078 R)
• M7: 4,525,934 km (0.071 R)
• M8: 4,946,304 km (0.071 R)
• M9: 7,260,583 km (0.063 R)
• M10: 7,787,616 km (0.112 R)
• M11: 8,704,801 km (0.114 R)
• M12: 12,961,459 km (0.091 R)
• M13: 14,025,997 km (0.086 R)
• M14: 19,228,114 km (0.03 R)
• M15: 24,617,826 km (0.108 R)
• M16: 25,477,265 km (0.093 R)
• M17: 32,571,047 km (0.114 R)
• M18: 43,308,135 km (0.112 R)
• M19: 44,559,371 km (0.104 R)
• M20: 51,178,928 km (0.092 R)
• M21: 59,184,658 km (0.102 R)
• M22: 60,530,739 km (0.077 R)

Planet 7 - Ice Giant

Semi-Major Axis: 11.6 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 247.5

Radius: 6.9

Gravity: 5.2 G

Time & Orbit

Eccentricity (e): 0.097

Orbit Range: 10.47 AU - 12.73 AU

Year: 17763 Days

Day: 18.5 Hours

Environment

Temp: -203 °C

Axial Tilt: 8.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 50,072,412 km

• M1: 85,869 km (0.09 R)
• M2: 335,698 km (0.109 R)
• M3: 582,534 km (0.107 R)
• M4: 1,047,933 km (0.112 R)
• M5: 1,770,341 km (0.095 R)
• M6: 2,617,813 km (0.036 R)
• M7: 3,050,899 km (0.064 R)
• M8: 3,736,506 km (0.108 R)
• M9: 4,431,538 km (0.054 R)
• M10: 8,817,298 km (0.098 R)
• M11: 12,525,381 km (0.119 R)
• M12: 13,374,648 km (0.109 R)
• M13: 14,785,805 km (0.111 R)
• M14: 16,435,570 km (0.102 R)
• M15: 22,729,003 km (0.082 R)
• M16: 25,678,923 km (0.048 R)
• M17: 31,328,786 km (0.093 R)
• M18: 36,891,733 km (0.117 R)

Kuiper Belt

Range: 30 - 56 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 271 - 18,478 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit