🌌 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: 0.53 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.37

Radius: 1.13

Gravity: 1.07 G

Time & Orbit

Eccentricity (e): 0.228

Orbit Range: 0.41 AU - 0.65 AU

Year: 253 Days

Day: 26.7 Hours

Environment

Temp: -121 °C

Axial Tilt: 8.8 °

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: 761.7

Radius: 13.9

Gravity: 3.94 G

Time & Orbit

Eccentricity (e): 0.006

Orbit Range: 0.87 AU - 0.89 AU

Year: 542 Days

Day: 12.7 Hours

Environment

Temp: -144 °C

Axial Tilt: 8.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 41,352,340 km

• M1: 179,368 km (0.03 R)
• M2: 679,324 km (0.118 R)
• M3: 1,397,394 km (0.098 R)
• M4: 2,382,496 km (0.041 R)
• M5: 2,837,722 km (0.092 R)
• M6: 4,095,541 km (0.062 R)
• M7: 5,012,725 km (0.114 R)
• M8: 6,561,363 km (0.059 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.96 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 888.7

Radius: 13.1

Gravity: 5.18 G

Time & Orbit

Eccentricity (e): 0.06

Orbit Range: 0.9 AU - 1.02 AU

Year: 617 Days

Day: 9.4 Hours

Environment

Temp: -150 °C

Axial Tilt: 47.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 41,352,340 km

• M1: 162,912 km (0.076 R)
• M2: 594,951 km (0.1 R)
• M3: 1,014,872 km (0.078 R)
• M4: 1,831,228 km (0.092 R)
• M5: 2,299,768 km (0.044 R)
• M6: 3,497,748 km (0.101 R)
• M7: 4,062,629 km (0.096 R)
• M8: 4,803,887 km (0.116 R)
• M9: 6,536,081 km (0.081 R)
• M10: 7,218,995 km (0.116 R)
• M11: 8,020,091 km (0.088 R)

Planet 4 - Gas Giant

Semi-Major Axis: 3.02 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 910.6

Radius: 12.2

Gravity: 6.12 G

Time & Orbit

Eccentricity (e): 0.152

Orbit Range: 2.56 AU - 3.48 AU

Year: 3443 Days

Day: 5.3 Hours

Environment

Temp: -207 °C

Axial Tilt: 6.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 41,352,340 km

• M1: 153,338 km (0.081 R)
• M2: 588,668 km (0.077 R)
• M3: 1,172,249 km (0.106 R)
• M4: 1,874,162 km (0.108 R)
• M5: 2,450,563 km (0.112 R)
• M6: 3,179,703 km (0.1 R)
• M7: 3,626,552 km (0.092 R)
• M8: 4,227,037 km (0.118 R)
• M9: 5,464,661 km (0.062 R)
• M10: 5,965,065 km (0.101 R)
• M11: 6,526,357 km (0.045 R)
• M12: 8,173,280 km (0.086 R)
• M13: 8,792,016 km (0.113 R)
• M14: 9,363,630 km (0.034 R)
• M15: 9,838,603 km (0.096 R)
• M16: 10,329,733 km (0.119 R)
• M17: 12,039,786 km (0.097 R)
• M18: 14,762,168 km (0.112 R)
• M19: 15,406,636 km (0.067 R)
• M20: 16,069,803 km (0.055 R)
• M21: 19,868,542 km (0.073 R)
• M22: 21,872,106 km (0.071 R)
• M23: 22,780,913 km (0.048 R)
• M24: 23,208,763 km (0.086 R)

Planet 5 - Gas Giant

Semi-Major Axis: 4.52 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 811.8

Radius: 12.7

Gravity: 5.03 G

Time & Orbit

Eccentricity (e): 0.03

Orbit Range: 4.38 AU - 4.66 AU

Year: 6304 Days

Day: 12.2 Hours

Environment

Temp: -211 °C

Axial Tilt: 6.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 41,352,340 km

• M1: 158,275 km (0.104 R)
• M2: 564,283 km (0.05 R)
• M3: 990,787 km (0.103 R)
• M4: 1,669,662 km (0.119 R)
• M5: 2,643,095 km (0.086 R)
• M6: 3,131,083 km (0.031 R)
• M7: 4,661,918 km (0.068 R)
• M8: 7,784,774 km (0.103 R)
• M9: 10,122,690 km (0.103 R)
• M10: 10,689,217 km (0.064 R)
• M11: 12,678,270 km (0.044 R)
• M12: 13,449,148 km (0.078 R)
• M13: 14,842,951 km (0.098 R)
• M14: 15,637,166 km (0.085 R)
• M15: 18,259,318 km (0.116 R)
• M16: 19,893,226 km (0.076 R)
• M17: 20,633,137 km (0.102 R)
• M18: 23,695,854 km (0.072 R)
• M19: 25,724,401 km (0.1 R)
• M20: 27,501,175 km (0.079 R)
• M21: 30,512,431 km (0.109 R)
• M22: 35,002,611 km (0.08 R)
• M23: 36,081,211 km (0.111 R)

Planet 6 - Gas Giant

Semi-Major Axis: 5.04 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 128.3

Radius: 12.4

Gravity: 0.83 G

Time & Orbit

Eccentricity (e): 0.243

Orbit Range: 3.82 AU - 6.26 AU

Year: 7423 Days

Day: 10.4 Hours

Environment

Temp: -213 °C

Axial Tilt: 0.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 41,352,340 km

• M1: 155,731 km (0.091 R)
• M2: 812,915 km (0.089 R)
• M3: 1,222,215 km (0.111 R)
• M4: 1,670,709 km (0.056 R)
• M5: 2,095,417 km (0.112 R)
• M6: 2,829,644 km (0.116 R)
• M7: 5,871,417 km (0.109 R)
• M8: 8,698,368 km (0.11 R)
• M9: 10,507,605 km (0.117 R)
• M10: 12,737,660 km (0.112 R)
• M11: 14,405,976 km (0.026 R)
• M12: 15,061,364 km (0.091 R)
• M13: 21,105,417 km (0.056 R)

Planet 7 - Ice Giant

Semi-Major Axis: 5.95 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 485.2

Radius: 6.2

Gravity: 12.62 G

Time & Orbit

Eccentricity (e): 0.192

Orbit Range: 4.81 AU - 7.09 AU

Year: 9521 Days

Day: 18 Hours

Environment

Temp: -219 °C

Axial Tilt: 10.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 41,352,340 km

• M1: 77,342 km (0.092 R)
• M2: 294,558 km (0.117 R)
• M3: 745,596 km (0.059 R)
• M4: 2,377,858 km (0.108 R)
• M5: 2,880,357 km (0.096 R)
• M6: 3,381,660 km (0.079 R)
• M7: 5,022,898 km (0.118 R)
• M8: 5,520,161 km (0.093 R)
• M9: 6,291,937 km (0.063 R)
• M10: 6,795,483 km (0.111 R)
• M11: 10,348,732 km (0.11 R)
• M12: 11,412,373 km (0.098 R)
• M13: 14,173,949 km (0.117 R)
• M14: 17,629,810 km (0.037 R)
• M15: 21,931,347 km (0.095 R)
• M16: 22,421,130 km (0.07 R)
• M17: 27,163,383 km (0.036 R)
• M18: 35,689,414 km (0.075 R)
• M19: 40,247,961 km (0.068 R)

Kuiper Belt

Range: 30 - 47 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 455 - 16,798 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit