🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.33 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.66 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.08

Radius: 1.57

Gravity: 1.25 G

Time & Orbit

Eccentricity (e): 0.06

Orbit Range: 0.62 AU - 0.7 AU

Year: 341 Days

Day: 24.4 Hours

Environment

Temp: -144 °C

Axial Tilt: 25.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 1.1 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 677.4

Radius: 11.6

Gravity: 5.03 G

Time & Orbit

Eccentricity (e): 0.108

Orbit Range: 0.98 AU - 1.22 AU

Year: 734 Days

Day: 5.7 Hours

Environment

Temp: -156 °C

Axial Tilt: 5.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 41,331,228 km

• M1: 144,212 km (0.03 R)
• M2: 521,648 km (0.065 R)
• M3: 965,804 km (0.08 R)
• M4: 1,439,281 km (0.061 R)
• M5: 1,841,849 km (0.117 R)
• M6: 2,562,761 km (0.067 R)
• M7: 3,125,249 km (0.111 R)
• M8: 3,811,754 km (0.075 R)
• M9: 4,434,380 km (0.078 R)
• M10: 6,240,026 km (0.061 R)
• M11: 6,611,029 km (0.063 R)
• M12: 7,955,914 km (0.065 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.28 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 945.4

Radius: 12.2

Gravity: 6.35 G

Time & Orbit

Eccentricity (e): 0.064

Orbit Range: 1.2 AU - 1.36 AU

Year: 921 Days

Day: 13.5 Hours

Environment

Temp: -172 °C

Axial Tilt: 34.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 41,331,228 km

• M1: 152,291 km (0.085 R)
• M2: 537,356 km (0.116 R)
• M3: 935,435 km (0.091 R)
• M4: 1,398,740 km (0.079 R)
• M5: 2,202,230 km (0.109 R)
• M6: 3,112,085 km (0.096 R)
• M7: 3,510,763 km (0.095 R)
• M8: 4,624,369 km (0.09 R)
• M9: 5,917,793 km (0.074 R)
• M10: 6,398,750 km (0.107 R)
• M11: 8,131,542 km (0.1 R)
• M12: 8,616,688 km (0.089 R)
• M13: 9,264,746 km (0.035 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.33 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 346.5

Radius: 10.4

Gravity: 3.2 G

Time & Orbit

Eccentricity (e): 0.215

Orbit Range: 1.04 AU - 1.62 AU

Year: 975 Days

Day: 8.6 Hours

Environment

Temp: -180 °C

Axial Tilt: 27.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 41,331,228 km

• M1: 129,402 km (0.046 R)
• M2: 536,009 km (0.112 R)
• M3: 940,223 km (0.07 R)
• M4: 1,341,743 km (0.045 R)
• M5: 1,666,819 km (0.065 R)
• M6: 2,148,973 km (0.034 R)
• M7: 2,524,165 km (0.097 R)
• M8: 2,872,130 km (0.099 R)
• M9: 3,226,826 km (0.105 R)
• M10: 3,583,467 km (0.086 R)
• M11: 4,206,094 km (0.093 R)
• M12: 4,764,991 km (0.108 R)
• M13: 5,354,557 km (0.053 R)
• M14: 5,704,915 km (0.052 R)
• M15: 6,050,785 km (0.068 R)
• M16: 6,827,647 km (0.039 R)
• M17: 7,351,539 km (0.086 R)
• M18: 8,044,177 km (0.073 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.58 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 888.1

Radius: 13.1

Gravity: 5.18 G

Time & Orbit

Eccentricity (e): 0.095

Orbit Range: 3.24 AU - 3.92 AU

Year: 4307 Days

Day: 6.4 Hours

Environment

Temp: -211 °C

Axial Tilt: 17.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 41,331,228 km

• M1: 162,912 km (0.088 R)
• M2: 660,325 km (0.085 R)
• M3: 1,237,922 km (0.091 R)
• M4: 1,738,776 km (0.07 R)
• M5: 2,266,408 km (0.096 R)
• M6: 3,320,026 km (0.068 R)
• M7: 4,188,591 km (0.036 R)
• M8: 6,282,363 km (0.109 R)
• M9: 7,058,476 km (0.1 R)
• M10: 7,505,176 km (0.117 R)
• M11: 8,608,460 km (0.118 R)
• M12: 10,071,826 km (0.085 R)
• M13: 10,594,820 km (0.111 R)
• M14: 11,790,257 km (0.101 R)
• M15: 17,421,570 km (0.108 R)
• M16: 19,018,676 km (0.092 R)
• M17: 21,918,332 km (0.087 R)
• M18: 23,549,398 km (0.065 R)
• M19: 24,785,375 km (0.092 R)
• M20: 25,419,521 km (0.118 R)
• M21: 25,902,123 km (0.036 R)
• M22: 27,135,408 km (0.068 R)
• M23: 28,149,831 km (0.093 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.59 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 338.3

Radius: 15

Gravity: 1.5 G

Time & Orbit

Eccentricity (e): 0.006

Orbit Range: 3.57 AU - 3.61 AU

Year: 4325 Days

Day: 14.3 Hours

Environment

Temp: -206 °C

Axial Tilt: 14.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 41,331,228 km

• M1: 189,241 km (0.079 R)
• M2: 1,520,513 km (0.04 R)
• M3: 3,878,774 km (0.12 R)
• M4: 5,014,670 km (0.076 R)
• M5: 5,635,053 km (0.117 R)
• M6: 6,362,397 km (0.064 R)
• M7: 8,305,075 km (0.107 R)
• M8: 9,803,747 km (0.116 R)
• M9: 10,737,686 km (0.099 R)
• M10: 11,267,861 km (0.066 R)
• M11: 13,332,461 km (0.104 R)
• M12: 15,432,666 km (0.085 R)
• M13: 17,577,151 km (0.115 R)
• M14: 21,411,345 km (0.112 R)

Planet 7 - Ice Giant

Semi-Major Axis: 8.78 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 160.5

Radius: 4.8

Gravity: 6.97 G

Time & Orbit

Eccentricity (e): 0.019

Orbit Range: 8.61 AU - 8.95 AU

Year: 16542 Days

Day: 20.2 Hours

Environment

Temp: -236 °C

Axial Tilt: 65.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 41,331,228 km

• M1: 62,083 km (0.118 R)
• M2: 785,090 km (0.105 R)
• M3: 1,829,283 km (0.088 R)
• M4: 2,033,783 km (0.081 R)
• M5: 7,987,928 km (0.088 R)
• M6: 8,407,400 km (0.073 R)
• M7: 10,878,757 km (0.088 R)
• M8: 12,033,354 km (0.102 R)
• M9: 13,914,696 km (0.116 R)
• M10: 17,194,031 km (0.12 R)
• M11: 17,610,811 km (0.07 R)
• M12: 18,901,541 km (0.108 R)
• M13: 23,150,121 km (0.079 R)
• M14: 26,402,379 km (0.055 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: 458 - 15,956 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit