🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.27 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.54 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.8

Radius: 1.27

Gravity: 1.12 G

Time & Orbit

Eccentricity (e): 0.139

Orbit Range: 0.46 AU - 0.62 AU

Year: 260 Days

Day: 40.9 Hours

Environment

Temp: -127 °C

Axial Tilt: 104.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.55 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.75

Radius: 1.5

Gravity: 1.22 G

Time & Orbit

Eccentricity (e): 0.039

Orbit Range: 0.53 AU - 0.57 AU

Year: 268 Days

Day: 24.3 Hours

Environment

Temp: -115 °C

Axial Tilt: 10.8 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 52,177,370 km

• M1: 201,359 km (0.089 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.87 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 798.1

Radius: 11.1

Gravity: 6.48 G

Time & Orbit

Eccentricity (e): 0.138

Orbit Range: 0.75 AU - 0.99 AU

Year: 532 Days

Day: 8.2 Hours

Environment

Temp: -155 °C

Axial Tilt: 39.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 52,177,370 km

• M1: 138,228 km (0.091 R)
• M2: 780,153 km (0.095 R)
• M3: 1,234,033 km (0.105 R)
• M4: 2,329,239 km (0.098 R)
• M5: 3,735,309 km (0.039 R)
• M6: 4,271,917 km (0.108 R)
• M7: 5,309,079 km (0.098 R)
• M8: 5,659,886 km (0.11 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.34 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 645

Radius: 13.6

Gravity: 3.49 G

Time & Orbit

Eccentricity (e): 0.156

Orbit Range: 1.13 AU - 1.55 AU

Year: 1018 Days

Day: 5.7 Hours

Environment

Temp: -171 °C

Axial Tilt: 8.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 52,177,370 km

• M1: 169,195 km (0.066 R)
• M2: 789,727 km (0.118 R)
• M3: 1,255,276 km (0.076 R)
• M4: 1,844,691 km (0.117 R)
• M5: 2,884,097 km (0.108 R)
• M6: 3,520,786 km (0.078 R)
• M7: 3,991,122 km (0.101 R)
• M8: 4,537,902 km (0.062 R)
• M9: 6,032,235 km (0.074 R)
• M10: 7,909,389 km (0.076 R)
• M11: 8,374,638 km (0.096 R)
• M12: 9,051,419 km (0.117 R)
• M13: 9,532,227 km (0.068 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.53 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 761.3

Radius: 14.3

Gravity: 3.72 G

Time & Orbit

Eccentricity (e): 0.016

Orbit Range: 1.51 AU - 1.55 AU

Year: 1241 Days

Day: 13.2 Hours

Environment

Temp: -169 °C

Axial Tilt: 19.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 52,177,370 km

• M1: 180,265 km (0.113 R)
• M2: 814,860 km (0.076 R)
• M3: 1,265,598 km (0.055 R)
• M4: 1,802,804 km (0.116 R)
• M5: 2,374,417 km (0.072 R)
• M6: 3,296,090 km (0.051 R)
• M7: 4,075,046 km (0.12 R)
• M8: 5,587,480 km (0.106 R)
• M9: 6,460,085 km (0.058 R)
• M10: 7,789,711 km (0.053 R)
• M11: 8,647,954 km (0.11 R)
• M12: 9,174,837 km (0.058 R)
• M13: 9,785,197 km (0.069 R)
• M14: 11,570,049 km (0.084 R)
• M15: 12,138,371 km (0.105 R)

Planet 6 - Gas Giant

Semi-Major Axis: 4.62 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 861.1

Radius: 10.9

Gravity: 7.25 G

Time & Orbit

Eccentricity (e): 0.049

Orbit Range: 4.39 AU - 4.85 AU

Year: 6514 Days

Day: 12 Hours

Environment

Temp: -207 °C

Axial Tilt: 42.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 52,177,370 km

• M1: 135,685 km (0.069 R)
• M2: 531,372 km (0.047 R)
• M3: 1,278,463 km (0.12 R)
• M4: 1,868,777 km (0.107 R)
• M5: 3,736,805 km (0.063 R)
• M6: 4,721,159 km (0.108 R)
• M7: 6,475,942 km (0.048 R)
• M8: 6,938,798 km (0.081 R)
• M9: 8,587,217 km (0.107 R)
• M10: 9,548,084 km (0.089 R)
• M11: 11,734,756 km (0.084 R)
• M12: 12,155,874 km (0.11 R)
• M13: 14,837,266 km (0.096 R)
• M14: 17,821,295 km (0.102 R)
• M15: 18,308,087 km (0.114 R)
• M16: 23,178,694 km (0.108 R)
• M17: 24,348,699 km (0.116 R)
• M18: 25,557,599 km (0.103 R)
• M19: 36,820,374 km (0.117 R)

Planet 7 - Ice Giant

Semi-Major Axis: 11.03 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 153

Radius: 7.1

Gravity: 3.04 G

Time & Orbit

Eccentricity (e): 0.175

Orbit Range: 9.1 AU - 12.96 AU

Year: 24031 Days

Day: 15.2 Hours

Environment

Temp: -222 °C

Axial Tilt: 42.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 52,177,370 km

• M1: 89,011 km (0.096 R)
• M2: 480,508 km (0.104 R)
• M3: 882,777 km (0.085 R)
• M4: 1,207,404 km (0.067 R)
• M5: 2,991,957 km (0.084 R)
• M6: 4,346,417 km (0.106 R)
• M7: 4,586,222 km (0.116 R)
• M8: 5,027,386 km (0.103 R)
• M9: 5,427,560 km (0.1 R)
• M10: 5,741,566 km (0.098 R)
• M11: 7,931,230 km (0.078 R)
• M12: 9,836,658 km (0.096 R)
• M13: 13,113,001 km (0.119 R)
• M14: 15,337,671 km (0.058 R)
• M15: 16,037,041 km (0.046 R)
• M16: 20,940,411 km (0.09 R)
• M17: 22,684,423 km (0.087 R)
• M18: 23,683,886 km (0.108 R)
• M19: 24,428,883 km (0.103 R)
• M20: 26,658,041 km (0.116 R)
• M21: 28,494,505 km (0.117 R)
• M22: 33,567,817 km (0.029 R)
• M23: 38,315,007 km (0.09 R)
• M24: 45,314,691 km (0.107 R)

Kuiper Belt

Range: 30 - 48 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 481 - 19,093 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit