🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.26 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.51 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.96

Radius: 1.31

Gravity: 1.14 G

Time & Orbit

Eccentricity (e): 0.195

Orbit Range: 0.41 AU - 0.61 AU

Year: 235 Days

Day: 40 Hours

Environment

Temp: -112 °C

Axial Tilt: 15.9 °

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: 1.83

Radius: 1.27

Gravity: 1.13 G

Time & Orbit

Eccentricity (e): 0.128

Orbit Range: 0.52 AU - 0.68 AU

Year: 300 Days

Day: 44.4 Hours

Environment

Temp: -132 °C

Axial Tilt: 3.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.9 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 200.3

Radius: 9.2

Gravity: 2.37 G

Time & Orbit

Eccentricity (e): 0.044

Orbit Range: 0.86 AU - 0.94 AU

Year: 551 Days

Day: 11.9 Hours

Environment

Temp: -161 °C

Axial Tilt: 6.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 57,543,677 km

• M1: 120,277 km (0.096 R)
• M2: 746,344 km (0.075 R)
• M3: 1,061,098 km (0.116 R)
• M4: 1,388,867 km (0.106 R)
• M5: 2,118,455 km (0.091 R)
• M6: 2,693,360 km (0.118 R)
• M7: 4,177,969 km (0.081 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.36 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 873.6

Radius: 11.1

Gravity: 7.09 G

Time & Orbit

Eccentricity (e): 0.149

Orbit Range: 1.16 AU - 1.56 AU

Year: 1024 Days

Day: 5.9 Hours

Environment

Temp: -177 °C

Axial Tilt: 91.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 57,543,677 km

• M1: 146,008 km (0.083 R)
• M2: 607,667 km (0.098 R)
• M3: 988,692 km (0.065 R)
• M4: 1,501,215 km (0.113 R)
• M5: 1,947,465 km (0.091 R)
• M6: 2,399,849 km (0.113 R)
• M7: 3,311,050 km (0.063 R)
• M8: 3,672,179 km (0.106 R)
• M9: 4,975,326 km (0.111 R)
• M10: 5,637,745 km (0.063 R)
• M11: 6,312,581 km (0.114 R)
• M12: 8,168,941 km (0.112 R)
• M13: 8,804,882 km (0.049 R)
• M14: 9,325,333 km (0.062 R)
• M15: 10,619,953 km (0.077 R)
• M16: 11,209,967 km (0.063 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.77 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 532.3

Radius: 8

Gravity: 8.32 G

Time & Orbit

Eccentricity (e): 0.116

Orbit Range: 1.56 AU - 1.98 AU

Year: 1520 Days

Day: 11.8 Hours

Environment

Temp: -176 °C

Axial Tilt: 45.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 57,543,677 km

• M1: 99,483 km (0.105 R)
• M2: 425,756 km (0.05 R)
• M3: 884,722 km (0.105 R)
• M4: 1,138,889 km (0.079 R)
• M5: 1,790,687 km (0.058 R)
• M6: 2,310,240 km (0.083 R)
• M7: 3,082,015 km (0.057 R)
• M8: 3,862,019 km (0.046 R)
• M9: 4,865,222 km (0.086 R)
• M10: 5,416,939 km (0.072 R)
• M11: 7,560,527 km (0.077 R)
• M12: 7,856,431 km (0.077 R)
• M13: 9,702,918 km (0.103 R)
• M14: 10,743,670 km (0.031 R)
• M15: 12,404,805 km (0.111 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.48 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 470.9

Radius: 12.3

Gravity: 3.11 G

Time & Orbit

Eccentricity (e): 0.11

Orbit Range: 2.21 AU - 2.75 AU

Year: 2522 Days

Day: 15 Hours

Environment

Temp: -194 °C

Axial Tilt: 16.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 57,543,677 km

• M1: 156,928 km (0.117 R)
• M2: 870,360 km (0.107 R)
• M3: 1,306,139 km (0.08 R)
• M4: 2,097,512 km (0.108 R)
• M5: 2,492,151 km (0.095 R)
• M6: 5,941,429 km (0.084 R)
• M7: 7,099,616 km (0.046 R)
• M8: 8,946,701 km (0.1 R)
• M9: 9,964,415 km (0.063 R)
• M10: 10,647,778 km (0.092 R)
• M11: 12,391,491 km (0.114 R)
• M12: 14,006,250 km (0.099 R)
• M13: 14,453,548 km (0.079 R)
• M14: 15,095,921 km (0.065 R)

Planet 7 - Ice Giant

Semi-Major Axis: 9.91 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 292.1

Radius: 5

Gravity: 11.68 G

Time & Orbit

Eccentricity (e): 0.154

Orbit Range: 8.38 AU - 11.44 AU

Year: 20143 Days

Day: 16.8 Hours

Environment

Temp: -220 °C

Axial Tilt: 33.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (29)

Outer Limit: 57,543,677 km

• M1: 102,774 km (0.093 R)
• M2: 827,426 km (0.117 R)
• M3: 1,026,541 km (0.109 R)
• M4: 1,421,030 km (0.048 R)
• M5: 2,301,563 km (0.091 R)
• M6: 2,484,671 km (0.11 R)
• M7: 3,740,994 km (0.067 R)
• M8: 4,412,838 km (0.119 R)
• M9: 7,465,083 km (0.073 R)
• M10: 7,642,357 km (0.066 R)
• M11: 8,864,272 km (0.07 R)
• M12: 10,763,417 km (0.06 R)
• M13: 12,981,505 km (0.113 R)
• M14: 13,695,386 km (0.11 R)
• M15: 17,505,793 km (0.11 R)
• M16: 18,136,199 km (0.034 R)
• M17: 22,057,907 km (0.11 R)
• M18: 23,072,928 km (0.091 R)
• M19: 30,723,513 km (0.081 R)
• M20: 31,409,120 km (0.065 R)
• M21: 37,264,979 km (0.069 R)
• M22: 38,835,009 km (0.102 R)
• M23: 40,721,588 km (0.067 R)
• M24: 42,527,383 km (0.107 R)
• M25: 43,093,611 km (0.104 R)
• M26: 54,828,517 km (0.037 R)
• M27: 56,175,197 km (0.063 R)
• M28: 57,199,494 km (0.083 R)
• M29: 57,543,719 km (0.056 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: 486 - 14,791 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit