🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.31 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.61 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.37

Radius: 1.41

Gravity: 1.19 G

Time & Orbit

Eccentricity (e): 0.029

Orbit Range: 0.59 AU - 0.63 AU

Year: 313 Days

Day: 28.3 Hours

Environment

Temp: -138 °C

Axial Tilt: 27.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.66 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.99

Radius: 1

Gravity: 0.99 G

Time & Orbit

Eccentricity (e): 0.069

Orbit Range: 0.61 AU - 0.71 AU

Year: 352 Days

Day: 37.2 Hours

Environment

Temp: -137 °C

Axial Tilt: 95.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.85 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 548.2

Radius: 9.1

Gravity: 6.62 G

Time & Orbit

Eccentricity (e): 0.021

Orbit Range: 0.83 AU - 0.87 AU

Year: 514 Days

Day: 6.3 Hours

Environment

Temp: -160 °C

Axial Tilt: 0.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 54,820,675 km

• M1: 113,096 km (0.111 R)
• M2: 434,283 km (0.073 R)
• M3: 732,282 km (0.101 R)
• M4: 1,038,060 km (0.069 R)
• M5: 1,353,562 km (0.113 R)
• M6: 1,644,978 km (0.094 R)
• M7: 2,012,241 km (0.078 R)
• M8: 2,580,414 km (0.031 R)
• M9: 3,406,792 km (0.064 R)
• M10: 3,861,719 km (0.104 R)
• M11: 4,709,640 km (0.118 R)
• M12: 5,423,372 km (0.103 R)
• M13: 5,920,336 km (0.12 R)

Planet 4 - Ice Giant

Semi-Major Axis: 6.2 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 725.9

Radius: 5.7

Gravity: 22.34 G

Time & Orbit

Eccentricity (e): 0.135

Orbit Range: 5.36 AU - 7.04 AU

Year: 10127 Days

Day: 22.7 Hours

Environment

Temp: -215 °C

Axial Tilt: 10.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (26)

Outer Limit: 54,820,675 km

• M1: 71,059 km (0.096 R)
• M2: 325,675 km (0.085 R)
• M3: 669,600 km (0.089 R)
• M4: 1,061,247 km (0.065 R)
• M5: 1,791,584 km (0.074 R)
• M6: 2,583,854 km (0.113 R)
• M7: 3,956,265 km (0.11 R)
• M8: 6,259,325 km (0.089 R)
• M9: 7,438,904 km (0.073 R)
• M10: 8,575,100 km (0.096 R)
• M11: 8,806,228 km (0.093 R)
• M12: 9,722,366 km (0.107 R)
• M13: 9,973,690 km (0.106 R)
• M14: 11,970,522 km (0.119 R)
• M15: 14,674,055 km (0.1 R)
• M16: 17,609,913 km (0.11 R)
• M17: 17,908,511 km (0.114 R)
• M18: 18,210,399 km (0.113 R)
• M19: 18,438,985 km (0.076 R)
• M20: 19,851,338 km (0.096 R)
• M21: 24,334,188 km (0.104 R)
• M22: 29,238,904 km (0.094 R)
• M23: 36,911,479 km (0.049 R)
• M24: 39,654,656 km (0.079 R)
• M25: 46,105,615 km (0.08 R)
• M26: 48,256,384 km (0.12 R)

Planet 5 - Ice Giant

Semi-Major Axis: 8.66 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 724.3

Radius: 4

Gravity: 45.27 G

Time & Orbit

Eccentricity (e): 0.066

Orbit Range: 8.09 AU - 9.23 AU

Year: 16718 Days

Day: 21.2 Hours

Environment

Temp: -230 °C

Axial Tilt: 27.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (35)

Outer Limit: 54,820,675 km

• M1: 49,816 km (0.108 R)
• M2: 226,491 km (0.113 R)
• M3: 450,589 km (0.109 R)
• M4: 599,588 km (0.066 R)
• M5: 1,060,649 km (0.089 R)
• M6: 1,243,906 km (0.112 R)
• M7: 1,887,177 km (0.085 R)
• M8: 2,137,305 km (0.091 R)
• M9: 2,996,745 km (0.11 R)
• M10: 3,851,248 km (0.115 R)
• M11: 4,683,909 km (0.08 R)
• M12: 6,355,217 km (0.097 R)
• M13: 6,696,749 km (0.097 R)
• M14: 7,604,060 km (0.106 R)
• M15: 8,488,034 km (0.111 R)
• M16: 10,693,854 km (0.095 R)
• M17: 13,391,702 km (0.073 R)
• M18: 13,600,242 km (0.091 R)
• M19: 14,238,576 km (0.083 R)
• M20: 14,528,646 km (0.096 R)
• M21: 17,401,224 km (0.106 R)
• M22: 17,566,530 km (0.079 R)
• M23: 23,424,783 km (0.051 R)
• M24: 27,454,052 km (0.101 R)
• M25: 28,016,390 km (0.104 R)
• M26: 30,702,270 km (0.115 R)
• M27: 37,122,861 km (0.106 R)
• M28: 37,259,743 km (0.085 R)
• M29: 37,810,263 km (0.113 R)
• M30: 40,355,073 km (0.106 R)
• M31: 43,162,726 km (0.084 R)
• M32: 52,878,808 km (0.036 R)
• M33: 56,054,771 km (0.083 R)
• M34: 60,673,306 km (0.105 R)
• M35: 63,172,338 km (0.086 R)

Planet 6 - Ice Giant

Semi-Major Axis: 10.05 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 597.6

Radius: 3.2

Gravity: 58.36 G

Time & Orbit

Eccentricity (e): 0.162

Orbit Range: 8.42 AU - 11.68 AU

Year: 20901 Days

Day: 16.8 Hours

Environment

Temp: -226 °C

Axial Tilt: 31.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (45)

Outer Limit: 54,820,675 km

• M1: 39,793 km (0.087 R)
• M2: 185,950 km (0.101 R)
• M3: 483,500 km (0.11 R)
• M4: 703,559 km (0.077 R)
• M5: 1,153,848 km (0.095 R)
• M6: 1,613,114 km (0.058 R)
• M7: 2,100,952 km (0.107 R)
• M8: 2,290,792 km (0.113 R)
• M9: 2,423,486 km (0.054 R)
• M10: 3,648,842 km (0.112 R)
• M11: 4,310,214 km (0.106 R)
• M12: 4,757,511 km (0.053 R)
• M13: 5,865,733 km (0.087 R)
• M14: 6,072,776 km (0.102 R)
• M15: 7,229,018 km (0.104 R)
• M16: 7,467,028 km (0.114 R)
• M17: 8,059,585 km (0.103 R)
• M18: 8,212,474 km (0.112 R)
• M19: 8,419,368 km (0.065 R)
• M20: 9,006,241 km (0.116 R)
• M21: 10,142,436 km (0.099 R)
• M22: 11,117,515 km (0.117 R)
• M23: 13,536,513 km (0.102 R)
• M24: 14,640,246 km (0.096 R)
• M25: 15,098,016 km (0.065 R)
• M26: 15,882,208 km (0.115 R)
• M27: 20,213,215 km (0.07 R)
• M28: 30,486,251 km (0.092 R)
• M29: 35,278,469 km (0.082 R)
• M30: 35,962,281 km (0.104 R)
• M31: 36,654,919 km (0.031 R)
• M32: 37,923,808 km (0.077 R)
• M33: 41,299,185 km (0.082 R)
• M34: 41,905,954 km (0.058 R)
• M35: 43,761,865 km (0.087 R)
• M36: 49,486,377 km (0.051 R)
• M37: 51,035,014 km (0.096 R)
• M38: 51,733,636 km (0.109 R)
• M39: 53,507,867 km (0.114 R)
• M40: 55,322,190 km (0.047 R)
• M41: 58,881,722 km (0.117 R)
• M42: 67,285,382 km (0.083 R)
• M43: 70,254,750 km (0.118 R)
• M44: 72,648,167 km (0.1 R)
• M45: 73,089,181 km (0.099 R)

Planet 7 - Ice Giant

Semi-Major Axis: 10.08 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 232.5

Radius: 4.2

Gravity: 13.18 G

Time & Orbit

Eccentricity (e): 0.131

Orbit Range: 8.76 AU - 11.4 AU

Year: 20994 Days

Day: 18.8 Hours

Environment

Temp: -231 °C

Axial Tilt: 29.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 54,820,675 km

• M1: 73,602 km (0.103 R)
• M2: 404,662 km (0.094 R)
• M3: 1,014,872 km (0.119 R)
• M4: 1,360,593 km (0.098 R)
• M5: 1,668,166 km (0.118 R)
• M6: 2,607,491 km (0.07 R)
• M7: 6,223,421 km (0.094 R)
• M8: 7,189,823 km (0.119 R)
• M9: 7,797,639 km (0.071 R)
• M10: 8,580,784 km (0.053 R)
• M11: 23,436,002 km (0.114 R)
• M12: 26,042,745 km (0.119 R)
• M13: 29,591,805 km (0.085 R)
• M14: 31,368,130 km (0.116 R)
• M15: 35,622,245 km (0.109 R)
• M16: 39,712,849 km (0.113 R)
• M17: 43,258,468 km (0.108 R)

Kuiper Belt

Range: 30 - 45 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 243 - 18,176 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit