🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.31 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.61 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.87

Radius: 1.52

Gravity: 1.24 G

Time & Orbit

Eccentricity (e): 0.236

Orbit Range: 0.47 AU - 0.75 AU

Year: 308 Days

Day: 15.4 Hours

Environment

Temp: -138 °C

Axial Tilt: 16.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.88 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 656.6

Radius: 13.3

Gravity: 3.71 G

Time & Orbit

Eccentricity (e): 0.23

Orbit Range: 0.68 AU - 1.08 AU

Year: 533 Days

Day: 5.8 Hours

Environment

Temp: -154 °C

Axial Tilt: 12.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 70,257,102 km

• M1: 165,455 km (0.113 R)
• M2: 780,302 km (0.076 R)
• M3: 1,305,690 km (0.056 R)
• M4: 1,736,382 km (0.085 R)
• M5: 2,356,914 km (0.096 R)
• M6: 3,335,434 km (0.073 R)
• M7: 4,007,129 km (0.08 R)
• M8: 4,464,300 km (0.096 R)
• M9: 5,727,354 km (0.05 R)
• M10: 6,160,440 km (0.091 R)

Planet 3 - Gas Giant

Semi-Major Axis: 2.64 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 238.2

Radius: 11.8

Gravity: 1.71 G

Time & Orbit

Eccentricity (e): 0.081

Orbit Range: 2.43 AU - 2.85 AU

Year: 2770 Days

Day: 14.7 Hours

Environment

Temp: -193 °C

Axial Tilt: 27.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 70,257,102 km

• M1: 146,756 km (0.102 R)
• M2: 537,206 km (0.06 R)
• M3: 1,000,660 km (0.106 R)
• M4: 1,473,240 km (0.111 R)
• M5: 2,186,223 km (0.113 R)
• M6: 2,869,736 km (0.037 R)
• M7: 3,492,512 km (0.052 R)
• M8: 4,506,187 km (0.085 R)
• M9: 5,156,190 km (0.09 R)
• M10: 5,890,865 km (0.119 R)
• M11: 6,492,847 km (0.063 R)
• M12: 6,899,454 km (0.106 R)
• M13: 7,679,906 km (0.047 R)
• M14: 8,048,515 km (0.093 R)
• M15: 9,416,887 km (0.108 R)
• M16: 10,688,469 km (0.097 R)
• M17: 11,148,781 km (0.068 R)
• M18: 13,488,193 km (0.116 R)

Planet 4 - Gas Giant

Semi-Major Axis: 4.69 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 869.1

Radius: 14

Gravity: 4.43 G

Time & Orbit

Eccentricity (e): 0.022

Orbit Range: 4.59 AU - 4.79 AU

Year: 6558 Days

Day: 12.8 Hours

Environment

Temp: -211 °C

Axial Tilt: 5.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 70,257,102 km

• M1: 174,132 km (0.095 R)
• M2: 642,373 km (0.11 R)
• M3: 1,175,241 km (0.08 R)
• M4: 1,733,989 km (0.107 R)
• M5: 2,280,171 km (0.115 R)
• M6: 3,920,362 km (0.043 R)
• M7: 4,622,873 km (0.086 R)
• M8: 5,077,801 km (0.043 R)
• M9: 5,657,043 km (0.104 R)
• M10: 6,556,276 km (0.12 R)
• M11: 8,223,694 km (0.092 R)
• M12: 9,467,750 km (0.09 R)
• M13: 10,158,743 km (0.06 R)
• M14: 10,686,524 km (0.091 R)
• M15: 13,549,378 km (0.055 R)
• M16: 14,130,865 km (0.088 R)
• M17: 24,546,916 km (0.095 R)
• M18: 27,387,331 km (0.115 R)
• M19: 28,130,234 km (0.096 R)
• M20: 29,269,871 km (0.078 R)
• M21: 31,641,296 km (0.098 R)
• M22: 34,890,412 km (0.114 R)
• M23: 38,471,336 km (0.109 R)

Planet 5 - Ice Giant

Semi-Major Axis: 9.26 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 217.8

Radius: 5.5

Gravity: 7.2 G

Time & Orbit

Eccentricity (e): 0.214

Orbit Range: 7.28 AU - 11.24 AU

Year: 18194 Days

Day: 17.8 Hours

Environment

Temp: -232 °C

Axial Tilt: 39.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 70,257,102 km

• M1: 79,436 km (0.107 R)
• M2: 623,075 km (0.119 R)
• M3: 1,293,124 km (0.111 R)
• M4: 2,156,005 km (0.068 R)
• M5: 3,399,612 km (0.053 R)
• M6: 3,675,769 km (0.114 R)
• M7: 6,045,699 km (0.103 R)
• M8: 10,585,246 km (0.075 R)
• M9: 10,850,483 km (0.113 R)
• M10: 11,898,416 km (0.116 R)
• M11: 12,243,090 km (0.112 R)
• M12: 18,469,652 km (0.052 R)
• M13: 18,854,119 km (0.108 R)
• M14: 19,559,473 km (0.114 R)
• M15: 23,801,769 km (0.081 R)
• M16: 26,232,435 km (0.067 R)
• M17: 28,414,470 km (0.11 R)
• M18: 35,091,771 km (0.095 R)
• M19: 37,001,687 km (0.079 R)
• M20: 38,603,731 km (0.105 R)
• M21: 39,485,311 km (0.112 R)
• M22: 43,011,183 km (0.106 R)
• M23: 44,643,445 km (0.097 R)
• M24: 47,886,578 km (0.105 R)

Planet 6 - Ice Giant

Semi-Major Axis: 10.45 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 453.4

Radius: 6.2

Gravity: 11.8 G

Time & Orbit

Eccentricity (e): 0.249

Orbit Range: 7.85 AU - 13.05 AU

Year: 21812 Days

Day: 23.6 Hours

Environment

Temp: -238 °C

Axial Tilt: 36.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 70,257,102 km

• M1: 77,193 km (0.063 R)
• M2: 398,080 km (0.111 R)
• M3: 1,240,765 km (0.053 R)
• M4: 1,915,750 km (0.077 R)
• M5: 3,631,937 km (0.073 R)
• M6: 3,867,554 km (0.107 R)
• M7: 4,208,188 km (0.115 R)
• M8: 4,739,111 km (0.056 R)
• M9: 7,087,947 km (0.105 R)
• M10: 8,034,154 km (0.119 R)
• M11: 10,290,538 km (0.095 R)
• M12: 11,375,272 km (0.108 R)
• M13: 13,349,516 km (0.097 R)
• M14: 14,127,275 km (0.063 R)
• M15: 22,932,007 km (0.111 R)
• M16: 26,490,492 km (0.086 R)
• M17: 27,378,355 km (0.106 R)
• M18: 34,547,384 km (0.092 R)
• M19: 35,339,804 km (0.119 R)
• M20: 55,621,236 km (0.077 R)
• M21: 60,819,463 km (0.104 R)
• M22: 65,726,423 km (0.079 R)
• M23: 70,257,144 km (0.107 R)

Kuiper Belt

Range: 30 - 56 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 310 - 10,397 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit