🌌 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: 0.58 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.47

Radius: 1.17

Gravity: 1.07 G

Time & Orbit

Eccentricity (e): 0.016

Orbit Range: 0.57 AU - 0.59 AU

Year: 281 Days

Day: 29.4 Hours

Environment

Temp: -124 °C

Axial Tilt: 39.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.74 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 522.3

Radius: 9.1

Gravity: 6.31 G

Time & Orbit

Eccentricity (e): 0.081

Orbit Range: 0.68 AU - 0.8 AU

Year: 405 Days

Day: 14.2 Hours

Environment

Temp: -135 °C

Axial Tilt: 13.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 34,597,274 km

• M1: 113,545 km (0.08 R)
• M2: 424,409 km (0.118 R)
• M3: 751,879 km (0.119 R)
• M4: 1,093,261 km (0.063 R)
• M5: 1,412,054 km (0.087 R)
• M6: 2,085,394 km (0.068 R)
• M7: 2,472,554 km (0.039 R)
• M8: 4,122,169 km (0.069 R)
• M9: 5,086,776 km (0.116 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.07 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 386.6

Radius: 14.2

Gravity: 1.92 G

Time & Orbit

Eccentricity (e): 0.005

Orbit Range: 1.06 AU - 1.08 AU

Year: 704 Days

Day: 6.5 Hours

Environment

Temp: -168 °C

Axial Tilt: 4.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 34,597,274 km

• M1: 176,825 km (0.104 R)
• M2: 619,934 km (0.041 R)
• M3: 1,161,029 km (0.118 R)
• M4: 1,805,198 km (0.093 R)
• M5: 3,190,175 km (0.089 R)
• M6: 4,286,428 km (0.108 R)
• M7: 5,482,612 km (0.062 R)
• M8: 6,196,344 km (0.103 R)
• M9: 6,732,203 km (0.118 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.21 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 623.3

Radius: 9.8

Gravity: 6.49 G

Time & Orbit

Eccentricity (e): 0.111

Orbit Range: 1.08 AU - 1.34 AU

Year: 846 Days

Day: 10.6 Hours

Environment

Temp: -168 °C

Axial Tilt: 12.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 34,597,274 km

• M1: 127,757 km (0.107 R)
• M2: 436,377 km (0.108 R)
• M3: 833,859 km (0.109 R)
• M4: 1,300,305 km (0.112 R)
• M5: 1,740,272 km (0.098 R)
• M6: 2,206,269 km (0.11 R)
• M7: 3,657,219 km (0.098 R)
• M8: 4,169,442 km (0.065 R)
• M9: 4,559,294 km (0.09 R)
• M10: 4,973,381 km (0.069 R)
• M11: 5,281,852 km (0.097 R)
• M12: 5,641,635 km (0.053 R)
• M13: 5,977,482 km (0.089 R)
• M14: 6,887,187 km (0.079 R)
• M15: 7,317,430 km (0.058 R)
• M16: 8,484,742 km (0.067 R)
• M17: 8,821,338 km (0.093 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.75 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 598.2

Radius: 14.9

Gravity: 2.69 G

Time & Orbit

Eccentricity (e): 0.171

Orbit Range: 1.45 AU - 2.05 AU

Year: 1472 Days

Day: 10.4 Hours

Environment

Temp: -183 °C

Axial Tilt: 31.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 34,597,274 km

• M1: 185,352 km (0.094 R)
• M2: 688,749 km (0.059 R)
• M3: 1,250,189 km (0.09 R)
• M4: 2,091,229 km (0.077 R)
• M5: 2,931,370 km (0.037 R)
• M6: 3,610,245 km (0.049 R)
• M7: 4,539,847 km (0.115 R)
• M8: 5,041,897 km (0.089 R)
• M9: 5,909,415 km (0.103 R)
• M10: 7,330,595 km (0.03 R)
• M11: 7,888,146 km (0.102 R)
• M12: 8,388,551 km (0.118 R)
• M13: 8,880,728 km (0.097 R)
• M14: 9,392,054 km (0.109 R)
• M15: 10,244,761 km (0.079 R)
• M16: 11,321,716 km (0.08 R)
• M17: 11,996,104 km (0.07 R)
• M18: 12,622,171 km (0.084 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.75 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 646.5

Radius: 10.8

Gravity: 5.54 G

Time & Orbit

Eccentricity (e): 0.183

Orbit Range: 1.43 AU - 2.07 AU

Year: 1472 Days

Day: 9.7 Hours

Environment

Temp: -185 °C

Axial Tilt: 31.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 34,597,274 km

• M1: 134,339 km (0.053 R)
• M2: 644,168 km (0.086 R)
• M3: 1,095,505 km (0.098 R)
• M4: 1,587,084 km (0.051 R)
• M5: 1,947,914 km (0.077 R)
• M6: 2,652,520 km (0.073 R)
• M7: 3,152,027 km (0.072 R)
• M8: 3,680,706 km (0.118 R)
• M9: 4,680,169 km (0.04 R)
• M10: 5,370,115 km (0.069 R)
• M11: 5,784,351 km (0.058 R)
• M12: 6,290,740 km (0.057 R)
• M13: 7,339,720 km (0.085 R)
• M14: 8,795,607 km (0.047 R)
• M15: 9,528,786 km (0.114 R)
• M16: 10,368,778 km (0.086 R)
• M17: 11,257,240 km (0.097 R)
• M18: 12,195,667 km (0.067 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.13 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 40.4

Radius: 10.5

Gravity: 0.37 G

Time & Orbit

Eccentricity (e): 0.094

Orbit Range: 2.84 AU - 3.42 AU

Year: 3521 Days

Day: 7.5 Hours

Environment

Temp: -204 °C

Axial Tilt: 25.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 34,597,274 km

• M1: 131,347 km (0.09 R)
• M2: 491,130 km (0.09 R)
• M3: 1,064,838 km (0.105 R)
• M4: 1,920,238 km (0.113 R)
• M5: 3,091,739 km (0.099 R)
• M6: 3,441,349 km (0.079 R)
• M7: 3,847,508 km (0.084 R)

Planet 8 - Gas Giant

Semi-Major Axis: 4.55 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 10.1

Radius: 12.5

Gravity: 0.06 G

Time & Orbit

Eccentricity (e): 0.23

Orbit Range: 3.5 AU - 5.6 AU

Year: 6171 Days

Day: 13.5 Hours

Environment

Temp: -210 °C

Axial Tilt: 0.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (5)

Outer Limit: 34,597,274 km

• M1: 155,432 km (0.104 R)
• M2: 801,994 km (0.113 R)
• M3: 1,386,623 km (0.07 R)
• M4: 1,971,102 km (0.099 R)
• M5: 4,469,984 km (0.103 R)

Planet 9 - Ice Giant

Semi-Major Axis: 8.15 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 117.7

Radius: 6.7

Gravity: 2.62 G

Time & Orbit

Eccentricity (e): 0.076

Orbit Range: 7.53 AU - 8.77 AU

Year: 14793 Days

Day: 16.5 Hours

Environment

Temp: -231 °C

Axial Tilt: 1.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 34,597,274 km

• M1: 84,224 km (0.103 R)
• M2: 298,298 km (0.082 R)
• M3: 629,059 km (0.102 R)
• M4: 925,113 km (0.049 R)
• M5: 1,279,062 km (0.029 R)
• M6: 1,627,475 km (0.067 R)
• M7: 2,099,307 km (0.112 R)
• M8: 2,789,252 km (0.092 R)
• M9: 4,193,827 km (0.116 R)
• M10: 4,634,692 km (0.108 R)
• M11: 5,732,142 km (0.105 R)
• M12: 6,508,704 km (0.083 R)
• M13: 7,994,660 km (0.098 R)
• M14: 10,279,019 km (0.099 R)
• M15: 11,031,646 km (0.055 R)
• M16: 13,181,517 km (0.037 R)
• M17: 13,899,737 km (0.062 R)
• M18: 17,294,711 km (0.104 R)
• M19: 19,960,993 km (0.089 R)
• M20: 24,744,086 km (0.117 R)
• M21: 28,385,598 km (0.07 R)
• M22: 32,270,205 km (0.051 R)

Kuiper Belt

Range: 30 - 58 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 393 - 14,147 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit