🌌 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: 0.23

Radius: 0.56

Gravity: 0.73 G

Time & Orbit

Eccentricity (e): 0.15

Orbit Range: 0.48 AU - 0.66 AU

Year: 282 Days

Day: 28.8 Hours

Environment

Temp: -117 °C

Axial Tilt: 0.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.62 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.79

Radius: 1.51

Gravity: 1.22 G

Time & Orbit

Eccentricity (e): 0.243

Orbit Range: 0.47 AU - 0.77 AU

Year: 320 Days

Day: 33.6 Hours

Environment

Temp: -128 °C

Axial Tilt: 47.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.91 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 400.8

Radius: 11.7

Gravity: 2.93 G

Time & Orbit

Eccentricity (e): 0.12

Orbit Range: 0.8 AU - 1.02 AU

Year: 569 Days

Day: 14.4 Hours

Environment

Temp: -158 °C

Axial Tilt: 39.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 29,463,768 km

• M1: 145,559 km (0.108 R)
• M2: 565,181 km (0.073 R)
• M3: 1,077,404 km (0.076 R)
• M4: 1,670,111 km (0.101 R)
• M5: 2,191,160 km (0.074 R)
• M6: 2,646,686 km (0.051 R)
• M7: 3,372,385 km (0.117 R)
• M8: 4,365,415 km (0.055 R)
• M9: 5,299,056 km (0.043 R)
• M10: 5,779,265 km (0.068 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.07 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 138.9

Radius: 13.4

Gravity: 0.77 G

Time & Orbit

Eccentricity (e): 0.223

Orbit Range: 0.83 AU - 1.31 AU

Year: 726 Days

Day: 7.1 Hours

Environment

Temp: -157 °C

Axial Tilt: 0.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 29,463,768 km

• M1: 166,652 km (0.052 R)
• M2: 589,565 km (0.084 R)
• M3: 1,085,632 km (0.102 R)
• M4: 1,735,485 km (0.117 R)
• M5: 2,590,736 km (0.072 R)
• M6: 3,178,057 km (0.114 R)
• M7: 3,781,685 km (0.083 R)
• M8: 4,342,377 km (0.063 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.14 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 140.5

Radius: 14.7

Gravity: 0.65 G

Time & Orbit

Eccentricity (e): 0.064

Orbit Range: 1.07 AU - 1.21 AU

Year: 798 Days

Day: 11.8 Hours

Environment

Temp: -159 °C

Axial Tilt: 18.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 29,463,768 km

• M1: 182,809 km (0.093 R)
• M2: 724,951 km (0.074 R)
• M3: 1,394,402 km (0.046 R)
• M4: 2,283,013 km (0.066 R)
• M5: 3,595,136 km (0.062 R)
• M6: 4,658,627 km (0.113 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.8 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 406.9

Radius: 13.3

Gravity: 2.3 G

Time & Orbit

Eccentricity (e): 0.224

Orbit Range: 1.4 AU - 2.2 AU

Year: 1584 Days

Day: 8 Hours

Environment

Temp: -192 °C

Axial Tilt: 22.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 29,463,768 km

• M1: 165,455 km (0.109 R)
• M2: 694,583 km (0.115 R)
• M3: 1,602,044 km (0.093 R)
• M4: 2,090,032 km (0.12 R)
• M5: 3,806,667 km (0.083 R)
• M6: 4,579,640 km (0.095 R)
• M7: 5,092,162 km (0.114 R)
• M8: 5,664,075 km (0.059 R)
• M9: 6,098,507 km (0.117 R)
• M10: 6,961,537 km (0.112 R)
• M11: 8,011,265 km (0.113 R)
• M12: 8,616,688 km (0.106 R)
• M13: 10,012,735 km (0.096 R)
• M14: 11,281,624 km (0.081 R)

Planet 7 - Gas Giant

Semi-Major Axis: 2.21 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 669.1

Radius: 9.1

Gravity: 8.08 G

Time & Orbit

Eccentricity (e): 0.051

Orbit Range: 2.1 AU - 2.32 AU

Year: 2155 Days

Day: 12.5 Hours

Environment

Temp: -199 °C

Axial Tilt: 5.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 29,463,768 km

• M1: 113,246 km (0.109 R)
• M2: 1,015,919 km (0.064 R)
• M3: 1,853,966 km (0.051 R)
• M4: 2,542,715 km (0.099 R)
• M5: 3,601,120 km (0.059 R)
• M6: 4,160,766 km (0.116 R)
• M7: 4,586,072 km (0.079 R)
• M8: 4,973,531 km (0.096 R)
• M9: 5,765,352 km (0.053 R)
• M10: 6,801,617 km (0.103 R)
• M11: 9,038,703 km (0.099 R)
• M12: 12,411,387 km (0.065 R)
• M13: 14,173,949 km (0.103 R)
• M14: 15,138,706 km (0.081 R)
• M15: 16,343,268 km (0.093 R)

Planet 8 - Gas Giant

Semi-Major Axis: 4.43 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 894.1

Radius: 13.5

Gravity: 4.91 G

Time & Orbit

Eccentricity (e): 0.121

Orbit Range: 3.89 AU - 4.97 AU

Year: 6117 Days

Day: 10.2 Hours

Environment

Temp: -221 °C

Axial Tilt: 36.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 29,463,768 km

• M1: 167,849 km (0.112 R)
• M2: 1,152,352 km (0.088 R)
• M3: 2,466,270 km (0.075 R)
• M4: 3,261,084 km (0.08 R)
• M5: 4,781,148 km (0.053 R)
• M6: 7,090,640 km (0.053 R)
• M7: 8,655,583 km (0.104 R)
• M8: 9,254,573 km (0.114 R)
• M9: 11,268,908 km (0.076 R)
• M10: 12,459,109 km (0.118 R)
• M11: 18,345,935 km (0.092 R)
• M12: 23,573,184 km (0.09 R)
• M13: 24,743,189 km (0.059 R)
• M14: 26,215,531 km (0.106 R)
• M15: 27,198,987 km (0.12 R)
• M16: 28,392,629 km (0.086 R)
• M17: 33,311,107 km (0.062 R)
• M18: 35,428,366 km (0.083 R)

Planet 9 - Ice Giant

Semi-Major Axis: 6.26 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 150.7

Radius: 4.7

Gravity: 6.82 G

Time & Orbit

Eccentricity (e): 0.074

Orbit Range: 5.8 AU - 6.72 AU

Year: 10275 Days

Day: 19.6 Hours

Environment

Temp: -227 °C

Axial Tilt: 9.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 29,463,768 km

• M1: 59,091 km (0.042 R)
• M2: 319,242 km (0.104 R)
• M3: 1,115,252 km (0.052 R)
• M4: 1,330,075 km (0.111 R)
• M5: 2,331,782 km (0.065 R)
• M6: 3,249,864 km (0.102 R)
• M7: 4,098,383 km (0.089 R)
• M8: 6,634,965 km (0.04 R)
• M9: 6,998,936 km (0.11 R)
• M10: 7,481,390 km (0.105 R)
• M11: 8,550,865 km (0.072 R)
• M12: 12,966,695 km (0.1 R)
• M13: 13,430,747 km (0.077 R)
• M14: 19,222,279 km (0.107 R)
• M15: 21,352,403 km (0.074 R)
• M16: 21,782,048 km (0.086 R)

Kuiper Belt

Range: 30 - 50 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 515 - 11,009 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit