🌌 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: 0.65 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.93

Radius: 1.73

Gravity: 1.31 G

Time & Orbit

Eccentricity (e): 0.202

Orbit Range: 0.52 AU - 0.78 AU

Year: 344 Days

Day: 16.9 Hours

Environment

Temp: -138 °C

Axial Tilt: 164.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.68 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 190.3

Radius: 14.2

Gravity: 0.94 G

Time & Orbit

Eccentricity (e): 0.197

Orbit Range: 0.55 AU - 0.81 AU

Year: 368 Days

Day: 11.8 Hours

Environment

Temp: -134 °C

Axial Tilt: 22.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (5)

Outer Limit: 89,457,645 km

• M1: 180,116 km (0.116 R)
• M2: 673,639 km (0.095 R)
• M3: 1,396,795 km (0.107 R)
• M4: 2,129,226 km (0.037 R)
• M5: 2,683,187 km (0.1 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.93 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 347.6

Radius: 12.1

Gravity: 2.37 G

Time & Orbit

Eccentricity (e): 0.106

Orbit Range: 0.83 AU - 1.03 AU

Year: 588 Days

Day: 13.9 Hours

Environment

Temp: -162 °C

Axial Tilt: 32.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 89,457,645 km

• M1: 150,495 km (0.114 R)
• M2: 841,937 km (0.119 R)
• M3: 1,325,138 km (0.114 R)
• M4: 1,913,806 km (0.085 R)
• M5: 2,423,785 km (0.025 R)
• M6: 3,489,221 km (0.11 R)
• M7: 4,256,957 km (0.073 R)
• M8: 4,844,129 km (0.106 R)
• M9: 5,468,401 km (0.039 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.01 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 692.7

Radius: 9.5

Gravity: 7.68 G

Time & Orbit

Eccentricity (e): 0.058

Orbit Range: 1.89 AU - 2.13 AU

Year: 1869 Days

Day: 6.6 Hours

Environment

Temp: -180 °C

Axial Tilt: 23 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 89,457,645 km

• M1: 118,182 km (0.072 R)
• M2: 514,916 km (0.095 R)
• M3: 921,822 km (0.117 R)
• M4: 1,385,575 km (0.084 R)
• M5: 2,338,664 km (0.099 R)
• M6: 2,743,924 km (0.113 R)
• M7: 3,148,437 km (0.113 R)
• M8: 4,021,789 km (0.112 R)
• M9: 4,525,336 km (0.115 R)
• M10: 5,404,373 km (0.091 R)
• M11: 6,141,591 km (0.111 R)
• M12: 6,677,899 km (0.109 R)
• M13: 7,583,714 km (0.114 R)
• M14: 7,962,347 km (0.041 R)
• M15: 8,353,396 km (0.093 R)
• M16: 9,705,611 km (0.112 R)
• M17: 10,327,639 km (0.089 R)
• M18: 12,554,253 km (0.041 R)
• M19: 13,630,311 km (0.115 R)
• M20: 14,856,714 km (0.065 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.66 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 396.3

Radius: 13.6

Gravity: 2.14 G

Time & Orbit

Eccentricity (e): 0.207

Orbit Range: 2.11 AU - 3.21 AU

Year: 2846 Days

Day: 7 Hours

Environment

Temp: -204 °C

Axial Tilt: 6.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 89,457,645 km

• M1: 169,195 km (0.11 R)
• M2: 599,588 km (0.066 R)
• M3: 1,100,741 km (0.093 R)
• M4: 1,548,637 km (0.117 R)
• M5: 2,207,017 km (0.061 R)
• M6: 3,062,867 km (0.106 R)
• M7: 4,072,353 km (0.101 R)
• M8: 4,890,205 km (0.109 R)
• M9: 5,621,140 km (0.117 R)
• M10: 6,476,541 km (0.1 R)
• M11: 7,273,299 km (0.114 R)
• M12: 8,510,174 km (0.088 R)
• M13: 9,535,069 km (0.098 R)
• M14: 10,203,024 km (0.116 R)
• M15: 11,750,913 km (0.053 R)
• M16: 12,810,664 km (0.081 R)
• M17: 13,756,272 km (0.071 R)
• M18: 14,609,878 km (0.095 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.92 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 18.4

Radius: 10

Gravity: 0.18 G

Time & Orbit

Eccentricity (e): 0.03

Orbit Range: 2.83 AU - 3.01 AU

Year: 3273 Days

Day: 8.4 Hours

Environment

Temp: -208 °C

Axial Tilt: 68.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 89,457,645 km

• M1: 143,913 km (0.05 R)
• M2: 457,919 km (0.109 R)
• M3: 1,208,003 km (0.082 R)
• M4: 1,570,179 km (0.071 R)
• M5: 2,257,133 km (0.118 R)
• M6: 2,591,634 km (0.055 R)
• M7: 4,955,429 km (0.044 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.99 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 248.6

Radius: 11.9

Gravity: 1.76 G

Time & Orbit

Eccentricity (e): 0.13

Orbit Range: 3.47 AU - 4.51 AU

Year: 5228 Days

Day: 13.3 Hours

Environment

Temp: -214 °C

Axial Tilt: 112.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 89,457,645 km

• M1: 147,952 km (0.064 R)
• M2: 591,510 km (0.081 R)
• M3: 1,084,884 km (0.116 R)
• M4: 1,876,107 km (0.056 R)
• M5: 2,886,641 km (0.085 R)
• M6: 3,835,241 km (0.099 R)
• M7: 4,980,712 km (0.044 R)
• M8: 5,529,287 km (0.093 R)
• M9: 8,935,780 km (0.114 R)
• M10: 10,933,061 km (0.082 R)
• M11: 17,033,214 km (0.084 R)
• M12: 18,455,441 km (0.099 R)
• M13: 19,466,722 km (0.069 R)
• M14: 20,640,317 km (0.043 R)
• M15: 22,123,580 km (0.061 R)

Planet 8 - Ice Giant

Semi-Major Axis: 10.18 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 980.8

Radius: 6.8

Gravity: 21.21 G

Time & Orbit

Eccentricity (e): 0.077

Orbit Range: 9.4 AU - 10.96 AU

Year: 21307 Days

Day: 20.9 Hours

Environment

Temp: -240 °C

Axial Tilt: 36.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (41)

Outer Limit: 89,457,645 km

• M1: 84,523 km (0.112 R)
• M2: 351,405 km (0.089 R)
• M3: 678,426 km (0.084 R)
• M4: 1,431,352 km (0.088 R)
• M5: 1,785,750 km (0.108 R)
• M6: 2,153,461 km (0.1 R)
• M7: 2,958,597 km (0.064 R)
• M8: 3,296,389 km (0.078 R)
• M9: 4,185,300 km (0.095 R)
• M10: 4,502,298 km (0.112 R)
• M11: 6,289,394 km (0.098 R)
• M12: 6,993,850 km (0.099 R)
• M13: 10,030,388 km (0.095 R)
• M14: 14,393,410 km (0.095 R)
• M15: 19,680,198 km (0.115 R)
• M16: 24,290,356 km (0.109 R)
• M17: 25,662,318 km (0.039 R)
• M18: 27,085,293 km (0.027 R)
• M19: 29,316,994 km (0.103 R)
• M20: 31,401,191 km (0.05 R)
• M21: 31,802,563 km (0.07 R)
• M22: 32,889,989 km (0.09 R)
• M23: 34,283,793 km (0.102 R)
• M24: 36,595,080 km (0.085 R)
• M25: 37,788,871 km (0.112 R)
• M26: 39,627,728 km (0.108 R)
• M27: 43,152,553 km (0.101 R)
• M28: 48,823,210 km (0.097 R)
• M29: 50,086,713 km (0.085 R)
• M30: 56,337,960 km (0.119 R)
• M31: 61,406,036 km (0.072 R)
• M32: 63,729,142 km (0.097 R)
• M33: 67,211,780 km (0.105 R)
• M34: 72,437,234 km (0.052 R)
• M35: 73,372,819 km (0.056 R)
• M36: 73,607,987 km (0.113 R)
• M37: 73,843,603 km (0.079 R)
• M38: 77,439,039 km (0.095 R)
• M39: 79,651,441 km (0.055 R)
• M40: 80,898,489 km (0.105 R)
• M41: 83,944,601 km (0.111 R)

Kuiper Belt

Range: 30 - 48 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 535 - 13,547 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit