🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.3 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.6 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.47

Radius: 1.44

Gravity: 1.19 G

Time & Orbit

Eccentricity (e): 0.085

Orbit Range: 0.55 AU - 0.65 AU

Year: 300 Days

Day: 25.2 Hours

Environment

Temp: -130 °C

Axial Tilt: 5.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.71 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 111.4

Radius: 12.8

Gravity: 0.68 G

Time & Orbit

Eccentricity (e): 0.004

Orbit Range: 0.71 AU - 0.71 AU

Year: 386 Days

Day: 10.3 Hours

Environment

Temp: -140 °C

Axial Tilt: 100 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 40,407,280 km

• M1: 159,322 km (0.062 R)
• M2: 643,121 km (0.058 R)
• M3: 1,061,098 km (0.05 R)
• M4: 1,576,014 km (0.114 R)
• M5: 2,061,907 km (0.112 R)
• M6: 2,914,017 km (0.104 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.75 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 496.5

Radius: 14.7

Gravity: 2.3 G

Time & Orbit

Eccentricity (e): 0.236

Orbit Range: 0.57 AU - 0.93 AU

Year: 419 Days

Day: 9.2 Hours

Environment

Temp: -132 °C

Axial Tilt: 27.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 40,407,280 km

• M1: 182,958 km (0.119 R)
• M2: 710,141 km (0.105 R)
• M3: 1,239,119 km (0.063 R)
• M4: 1,837,361 km (0.062 R)
• M5: 2,499,032 km (0.091 R)
• M6: 3,530,659 km (0.116 R)
• M7: 4,428,097 km (0.033 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.95 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 187

Radius: 9.9

Gravity: 1.91 G

Time & Orbit

Eccentricity (e): 0.032

Orbit Range: 0.92 AU - 0.98 AU

Year: 598 Days

Day: 5 Hours

Environment

Temp: -149 °C

Axial Tilt: 41.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 40,407,280 km

• M1: 123,119 km (0.043 R)
• M2: 556,504 km (0.065 R)
• M3: 980,764 km (0.112 R)
• M4: 1,389,016 km (0.069 R)
• M5: 1,732,044 km (0.07 R)
• M6: 2,204,624 km (0.118 R)
• M7: 2,917,308 km (0.044 R)
• M8: 3,300,727 km (0.064 R)
• M9: 3,624,607 km (0.073 R)
• M10: 4,643,967 km (0.042 R)

Planet 5 - Gas Giant

Semi-Major Axis: 4.45 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 611.1

Radius: 13.3

Gravity: 3.45 G

Time & Orbit

Eccentricity (e): 0.226

Orbit Range: 3.44 AU - 5.46 AU

Year: 6061 Days

Day: 6.8 Hours

Environment

Temp: -207 °C

Axial Tilt: 5.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 40,407,280 km

• M1: 165,455 km (0.119 R)
• M2: 856,747 km (0.096 R)
• M3: 1,563,148 km (0.114 R)
• M4: 2,222,875 km (0.073 R)
• M5: 2,761,577 km (0.09 R)
• M6: 3,345,158 km (0.107 R)
• M7: 4,527,280 km (0.036 R)
• M8: 5,459,125 km (0.033 R)
• M9: 7,411,079 km (0.099 R)
• M10: 8,040,138 km (0.101 R)
• M11: 10,055,221 km (0.072 R)
• M12: 11,299,726 km (0.115 R)
• M13: 12,387,601 km (0.085 R)
• M14: 13,009,928 km (0.055 R)
• M15: 14,093,316 km (0.05 R)
• M16: 18,428,812 km (0.116 R)
• M17: 19,035,282 km (0.095 R)
• M18: 19,794,491 km (0.076 R)
• M19: 20,502,239 km (0.036 R)
• M20: 24,216,754 km (0.063 R)
• M21: 28,447,232 km (0.037 R)

Planet 6 - Ice Giant

Semi-Major Axis: 7.1 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 829.1

Radius: 5.7

Gravity: 25.52 G

Time & Orbit

Eccentricity (e): 0.026

Orbit Range: 6.92 AU - 7.28 AU

Year: 12215 Days

Day: 23.5 Hours

Environment

Temp: -225 °C

Axial Tilt: 32.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 40,407,280 km

• M1: 70,909 km (0.117 R)
• M2: 464,501 km (0.097 R)
• M3: 752,776 km (0.087 R)
• M4: 1,323,492 km (0.075 R)
• M5: 1,598,304 km (0.096 R)
• M6: 4,452,332 km (0.117 R)
• M7: 5,454,787 km (0.042 R)
• M8: 6,123,938 km (0.091 R)
• M9: 7,358,570 km (0.075 R)
• M10: 8,221,301 km (0.078 R)
• M11: 10,254,784 km (0.081 R)
• M12: 11,863,111 km (0.058 R)
• M13: 14,998,832 km (0.099 R)
• M14: 18,483,715 km (0.063 R)
• M15: 18,810,137 km (0.061 R)
• M16: 19,812,293 km (0.06 R)
• M17: 24,178,157 km (0.098 R)
• M18: 29,365,015 km (0.097 R)
• M19: 31,054,723 km (0.109 R)
• M20: 31,284,804 km (0.118 R)
• M21: 34,013,021 km (0.079 R)
• M22: 57,156,559 km (0.104 R)

Planet 7 - Ice Giant

Semi-Major Axis: 7.35 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 247.9

Radius: 3.8

Gravity: 17.17 G

Time & Orbit

Eccentricity (e): 0.136

Orbit Range: 6.35 AU - 8.35 AU

Year: 12866 Days

Day: 21.9 Hours

Environment

Temp: -225 °C

Axial Tilt: 27.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 40,407,280 km

• M1: 302,786 km (0.105 R)
• M2: 454,030 km (0.109 R)
• M3: 764,894 km (0.083 R)
• M4: 1,062,444 km (0.032 R)
• M5: 2,459,838 km (0.108 R)
• M6: 3,415,469 km (0.09 R)
• M7: 4,291,215 km (0.12 R)
• M8: 4,651,746 km (0.066 R)
• M9: 4,854,002 km (0.109 R)
• M10: 5,560,104 km (0.1 R)
• M11: 8,852,454 km (0.092 R)
• M12: 10,235,636 km (0.11 R)
• M13: 12,570,559 km (0.099 R)
• M14: 13,890,761 km (0.11 R)
• M15: 16,402,060 km (0.097 R)
• M16: 16,535,053 km (0.113 R)
• M17: 22,138,091 km (0.031 R)
• M18: 24,485,132 km (0.105 R)
• M19: 25,361,925 km (0.081 R)
• M20: 29,469,733 km (0.052 R)
• M21: 32,615,926 km (0.035 R)
• M22: 33,569,613 km (0.09 R)
• M23: 37,801,736 km (0.091 R)
• M24: 38,853,559 km (0.079 R)

Kuiper Belt

Range: 30 - 49 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 515 - 15,042 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit