🌌 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: 3.35

Radius: 1.62

Gravity: 1.28 G

Time & Orbit

Eccentricity (e): 0.116

Orbit Range: 0.5 AU - 0.64 AU

Year: 278 Days

Day: 25.6 Hours

Environment

Temp: -120 °C

Axial Tilt: 20.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 21,105,850 km

• M1: 37,848 km (0.1 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.87 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 604.8

Radius: 10.2

Gravity: 5.81 G

Time & Orbit

Eccentricity (e): 0.224

Orbit Range: 0.68 AU - 1.06 AU

Year: 524 Days

Day: 13.9 Hours

Environment

Temp: -146 °C

Axial Tilt: 28.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 21,105,850 km

• M1: 126,859 km (0.106 R)
• M2: 449,093 km (0.117 R)
• M3: 790,625 km (0.088 R)
• M4: 1,211,743 km (0.035 R)
• M5: 1,836,314 km (0.072 R)
• M6: 2,310,390 km (0.114 R)
• M7: 2,663,889 km (0.087 R)
• M8: 3,087,700 km (0.077 R)
• M9: 3,607,104 km (0.073 R)
• M10: 4,240,352 km (0.058 R)
• M11: 4,652,045 km (0.117 R)
• M12: 4,993,876 km (0.084 R)
• M13: 5,641,784 km (0.088 R)
• M14: 6,269,946 km (0.105 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.99 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 493.1

Radius: 13.7

Gravity: 2.63 G

Time & Orbit

Eccentricity (e): 0.057

Orbit Range: 0.93 AU - 1.05 AU

Year: 636 Days

Day: 12.2 Hours

Environment

Temp: -159 °C

Axial Tilt: 36.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 21,105,850 km

• M1: 170,392 km (0.076 R)
• M2: 664,813 km (0.098 R)
• M3: 1,164,021 km (0.104 R)
• M4: 1,871,320 km (0.117 R)
• M5: 2,724,327 km (0.09 R)
• M6: 3,665,148 km (0.11 R)
• M7: 4,490,180 km (0.062 R)
• M8: 6,433,008 km (0.071 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.73 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 746

Radius: 10.4

Gravity: 6.9 G

Time & Orbit

Eccentricity (e): 0.117

Orbit Range: 1.53 AU - 1.93 AU

Year: 1469 Days

Day: 12 Hours

Environment

Temp: -193 °C

Axial Tilt: 9.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 21,105,850 km

• M1: 129,402 km (0.087 R)
• M2: 538,552 km (0.091 R)
• M3: 887,564 km (0.111 R)
• M4: 1,444,667 km (0.097 R)
• M5: 1,912,459 km (0.072 R)
• M6: 2,442,036 km (0.115 R)
• M7: 4,075,495 km (0.038 R)
• M8: 4,675,831 km (0.114 R)
• M9: 5,663,476 km (0.12 R)
• M10: 7,656,419 km (0.088 R)
• M11: 8,512,119 km (0.112 R)
• M12: 8,902,120 km (0.058 R)
• M13: 10,278,271 km (0.081 R)
• M14: 12,088,256 km (0.067 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.07 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 302.5

Radius: 14.2

Gravity: 1.5 G

Time & Orbit

Eccentricity (e): 0.25

Orbit Range: 1.55 AU - 2.59 AU

Year: 1923 Days

Day: 11.8 Hours

Environment

Temp: -191 °C

Axial Tilt: 39.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 21,105,850 km

• M1: 176,675 km (0.037 R)
• M2: 813,663 km (0.096 R)
• M3: 1,283,251 km (0.093 R)
• M4: 2,159,595 km (0.118 R)
• M5: 3,303,420 km (0.097 R)
• M6: 3,780,937 km (0.097 R)
• M7: 4,375,887 km (0.064 R)
• M8: 4,993,577 km (0.115 R)
• M9: 6,130,222 km (0.109 R)
• M10: 7,640,711 km (0.098 R)
• M11: 8,825,975 km (0.068 R)
• M12: 11,012,946 km (0.072 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.85 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 812.6

Radius: 14.8

Gravity: 3.71 G

Time & Orbit

Eccentricity (e): 0.06

Orbit Range: 3.62 AU - 4.08 AU

Year: 4878 Days

Day: 8.1 Hours

Environment

Temp: -205 °C

Axial Tilt: 30 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 21,105,850 km

• M1: 187,745 km (0.113 R)
• M2: 660,774 km (0.097 R)
• M3: 1,445,415 km (0.118 R)
• M4: 1,981,723 km (0.036 R)
• M5: 2,466,869 km (0.118 R)
• M6: 2,994,501 km (0.109 R)
• M7: 3,772,110 km (0.064 R)
• M8: 5,673,350 km (0.11 R)
• M9: 6,603,699 km (0.066 R)
• M10: 7,778,640 km (0.117 R)
• M11: 8,532,464 km (0.08 R)
• M12: 9,170,349 km (0.064 R)
• M13: 9,969,053 km (0.116 R)
• M14: 12,243,987 km (0.106 R)
• M15: 14,565,447 km (0.086 R)
• M16: 16,308,113 km (0.048 R)
• M17: 17,292,467 km (0.118 R)
• M18: 18,909,470 km (0.049 R)
• M19: 20,065,413 km (0.114 R)
• M20: 23,972,311 km (0.089 R)
• M21: 26,311,872 km (0.112 R)

Planet 7 - Ice Giant

Semi-Major Axis: 8.27 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 24.8

Radius: 3.8

Gravity: 1.72 G

Time & Orbit

Eccentricity (e): 0.152

Orbit Range: 7.01 AU - 9.53 AU

Year: 15356 Days

Day: 15.2 Hours

Environment

Temp: -232 °C

Axial Tilt: 118.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 21,105,850 km

• M1: 48,470 km (0.101 R)
• M2: 2,711,312 km (0.096 R)
• M3: 3,437,460 km (0.102 R)
• M4: 13,582,439 km (0.105 R)
• M5: 15,501,481 km (0.117 R)
• M6: 19,445,778 km (0.105 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: 447 - 14,949 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit