🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.3 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.6 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.05

Radius: 1.56

Gravity: 1.25 G

Time & Orbit

Eccentricity (e): 0.153

Orbit Range: 0.51 AU - 0.69 AU

Year: 305 Days

Day: 33.9 Hours

Environment

Temp: -126 °C

Axial Tilt: 13.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.84 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 209.9

Radius: 12.7

Gravity: 1.3 G

Time & Orbit

Eccentricity (e): 0.226

Orbit Range: 0.65 AU - 1.03 AU

Year: 505 Days

Day: 6.8 Hours

Environment

Temp: -141 °C

Axial Tilt: 20 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 57,269,550 km

• M1: 157,975 km (0.043 R)
• M2: 619,934 km (0.051 R)
• M3: 1,212,341 km (0.105 R)
• M4: 1,611,917 km (0.108 R)
• M5: 2,162,736 km (0.044 R)
• M6: 2,618,711 km (0.061 R)
• M7: 3,419,359 km (0.117 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.87 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 982.9

Radius: 9.3

Gravity: 11.36 G

Time & Orbit

Eccentricity (e): 0.071

Orbit Range: 0.81 AU - 0.93 AU

Year: 532 Days

Day: 9.9 Hours

Environment

Temp: -161 °C

Axial Tilt: 33.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 57,269,550 km

• M1: 117,434 km (0.117 R)
• M2: 545,583 km (0.036 R)
• M3: 834,756 km (0.106 R)
• M4: 1,224,758 km (0.103 R)
• M5: 1,759,570 km (0.05 R)
• M6: 2,128,179 km (0.099 R)
• M7: 3,449,577 km (0.07 R)
• M8: 4,017,152 km (0.08 R)
• M9: 5,285,592 km (0.106 R)
• M10: 6,002,166 km (0.103 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.69 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 596.1

Radius: 9.5

Gravity: 6.6 G

Time & Orbit

Eccentricity (e): 0.064

Orbit Range: 2.52 AU - 2.86 AU

Year: 2894 Days

Day: 6.5 Hours

Environment

Temp: -208 °C

Axial Tilt: 33.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 57,269,550 km

• M1: 118,332 km (0.038 R)
• M2: 569,369 km (0.085 R)
• M3: 1,813,725 km (0.097 R)
• M4: 2,789,701 km (0.099 R)
• M5: 3,269,910 km (0.089 R)
• M6: 4,816,303 km (0.11 R)
• M7: 5,763,108 km (0.11 R)
• M8: 8,348,758 km (0.117 R)
• M9: 10,501,920 km (0.039 R)
• M10: 11,417,609 km (0.095 R)
• M11: 13,361,783 km (0.1 R)
• M12: 14,245,457 km (0.09 R)
• M13: 14,921,191 km (0.077 R)
• M14: 18,228,949 km (0.068 R)
• M15: 18,624,187 km (0.079 R)
• M16: 19,608,242 km (0.101 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.1 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 506.1

Radius: 14.5

Gravity: 2.41 G

Time & Orbit

Eccentricity (e): 0.21

Orbit Range: 2.45 AU - 3.75 AU

Year: 3581 Days

Day: 6.7 Hours

Environment

Temp: -209 °C

Axial Tilt: 24.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 57,269,550 km

• M1: 183,407 km (0.062 R)
• M2: 640,877 km (0.112 R)
• M3: 1,182,870 km (0.105 R)
• M4: 1,927,419 km (0.086 R)
• M5: 2,387,283 km (0.104 R)
• M6: 3,174,766 km (0.072 R)
• M7: 3,668,888 km (0.115 R)
• M8: 4,496,463 km (0.076 R)
• M9: 5,171,898 km (0.112 R)
• M10: 6,381,995 km (0.04 R)
• M11: 8,854,997 km (0.115 R)
• M12: 10,542,910 km (0.104 R)
• M13: 12,348,107 km (0.048 R)
• M14: 13,582,290 km (0.065 R)
• M15: 14,205,215 km (0.1 R)
• M16: 14,697,243 km (0.075 R)
• M17: 16,456,065 km (0.077 R)
• M18: 17,949,949 km (0.077 R)
• M19: 19,054,131 km (0.11 R)
• M20: 20,388,843 km (0.066 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.67 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 429.3

Radius: 10.6

Gravity: 3.82 G

Time & Orbit

Eccentricity (e): 0.178

Orbit Range: 3.02 AU - 4.32 AU

Year: 4612 Days

Day: 14.9 Hours

Environment

Temp: -211 °C

Axial Tilt: 19.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 57,269,550 km

• M1: 163,361 km (0.106 R)
• M2: 643,869 km (0.072 R)
• M3: 983,456 km (0.04 R)
• M4: 1,316,162 km (0.111 R)
• M5: 1,737,729 km (0.096 R)
• M6: 2,549,148 km (0.061 R)
• M7: 3,419,807 km (0.107 R)
• M8: 4,052,756 km (0.098 R)
• M9: 4,859,238 km (0.039 R)
• M10: 7,891,587 km (0.081 R)
• M11: 8,414,132 km (0.078 R)
• M12: 10,655,108 km (0.12 R)
• M13: 11,207,274 km (0.036 R)
• M14: 12,048,762 km (0.049 R)
• M15: 14,930,915 km (0.1 R)
• M16: 16,114,234 km (0.115 R)
• M17: 17,709,546 km (0.104 R)
• M18: 18,850,379 km (0.099 R)
• M19: 19,345,099 km (0.092 R)
• M20: 20,039,532 km (0.118 R)

Planet 7 - Ice Giant

Semi-Major Axis: 8.48 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 445.2

Radius: 7.6

Gravity: 7.71 G

Time & Orbit

Eccentricity (e): 0.16

Orbit Range: 7.12 AU - 9.84 AU

Year: 16200 Days

Day: 19.2 Hours

Environment

Temp: -219 °C

Axial Tilt: 1.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (26)

Outer Limit: 57,269,550 km

• M1: 96,191 km (0.117 R)
• M2: 594,352 km (0.102 R)
• M3: 966,552 km (0.075 R)
• M4: 2,695,903 km (0.117 R)
• M5: 3,037,884 km (0.034 R)
• M6: 4,452,631 km (0.086 R)
• M7: 5,201,069 km (0.076 R)
• M8: 7,071,192 km (0.109 R)
• M9: 8,415,329 km (0.068 R)
• M10: 9,147,611 km (0.093 R)
• M11: 9,658,936 km (0.1 R)
• M12: 13,655,144 km (0.107 R)
• M13: 14,596,115 km (0.118 R)
• M14: 17,137,184 km (0.048 R)
• M15: 19,705,480 km (0.074 R)
• M16: 21,434,981 km (0.094 R)
• M17: 25,391,695 km (0.117 R)
• M18: 25,892,848 km (0.06 R)
• M19: 27,331,531 km (0.096 R)
• M20: 33,023,281 km (0.114 R)
• M21: 34,346,774 km (0.105 R)
• M22: 34,591,067 km (0.112 R)
• M23: 41,359,623 km (0.113 R)
• M24: 44,761,328 km (0.086 R)
• M25: 50,837,545 km (0.07 R)
• M26: 56,077,211 km (0.083 R)

Kuiper Belt

Range: 30 - 49 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 288 - 13,940 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit