🌌 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: 1.62

Radius: 1.21

Gravity: 1.11 G

Time & Orbit

Eccentricity (e): 0.209

Orbit Range: 0.47 AU - 0.73 AU

Year: 300 Days

Day: 25.6 Hours

Environment

Temp: -137 °C

Axial Tilt: 11 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 40,207,758 km

• M1: 38,447 km (0.103 R)
• M2: 76,594 km (0.119 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.84 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 290.1

Radius: 13.2

Gravity: 1.66 G

Time & Orbit

Eccentricity (e): 0.18

Orbit Range: 0.69 AU - 0.99 AU

Year: 497 Days

Day: 12.1 Hours

Environment

Temp: -139 °C

Axial Tilt: 3.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 40,207,758 km

• M1: 164,408 km (0.092 R)
• M2: 751,879 km (0.055 R)
• M3: 1,273,975 km (0.115 R)
• M4: 1,978,432 km (0.043 R)
• M5: 2,473,750 km (0.08 R)
• M6: 2,931,370 km (0.077 R)
• M7: 3,649,590 km (0.072 R)
• M8: 4,685,405 km (0.092 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.11 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 90.5

Radius: 10

Gravity: 0.91 G

Time & Orbit

Eccentricity (e): 0.002

Orbit Range: 1.11 AU - 1.11 AU

Year: 755 Days

Day: 13 Hours

Environment

Temp: -170 °C

Axial Tilt: 127.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 40,207,758 km

• M1: 124,316 km (0.068 R)
• M2: 456,573 km (0.095 R)
• M3: 1,072,018 km (0.081 R)
• M4: 1,410,110 km (0.095 R)
• M5: 1,834,369 km (0.099 R)
• M6: 2,181,735 km (0.063 R)
• M7: 2,529,550 km (0.07 R)
• M8: 2,895,168 km (0.115 R)
• M9: 3,233,708 km (0.101 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.33 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 259.4

Radius: 14.8

Gravity: 1.18 G

Time & Orbit

Eccentricity (e): 0.211

Orbit Range: 1.84 AU - 2.82 AU

Year: 2296 Days

Day: 14 Hours

Environment

Temp: -203 °C

Axial Tilt: 128.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 40,207,758 km

• M1: 184,005 km (0.097 R)
• M2: 865,573 km (0.059 R)
• M3: 1,601,894 km (0.096 R)
• M4: 2,136,258 km (0.118 R)
• M5: 3,079,771 km (0.038 R)
• M6: 4,022,687 km (0.104 R)
• M7: 4,562,585 km (0.11 R)
• M8: 5,029,331 km (0.104 R)
• M9: 5,592,716 km (0.102 R)
• M10: 6,105,687 km (0.117 R)
• M11: 6,674,608 km (0.064 R)
• M12: 7,461,792 km (0.03 R)
• M13: 8,539,346 km (0.118 R)
• M14: 9,877,050 km (0.086 R)
• M15: 11,921,155 km (0.1 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.89 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 740.3

Radius: 13.5

Gravity: 4.06 G

Time & Orbit

Eccentricity (e): 0.19

Orbit Range: 2.34 AU - 3.44 AU

Year: 3172 Days

Day: 15 Hours

Environment

Temp: -205 °C

Axial Tilt: 11.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 40,207,758 km

• M1: 167,849 km (0.107 R)
• M2: 781,050 km (0.12 R)
• M3: 1,299,706 km (0.06 R)
• M4: 2,037,373 km (0.058 R)
• M5: 2,556,179 km (0.077 R)
• M6: 3,925,897 km (0.093 R)
• M7: 5,425,017 km (0.057 R)
• M8: 6,968,119 km (0.099 R)
• M9: 7,531,954 km (0.105 R)
• M10: 7,991,369 km (0.07 R)
• M11: 8,469,633 km (0.11 R)
• M12: 11,365,549 km (0.081 R)
• M13: 12,193,124 km (0.105 R)
• M14: 13,342,784 km (0.074 R)
• M15: 15,020,673 km (0.082 R)
• M16: 15,592,586 km (0.087 R)
• M17: 16,232,865 km (0.092 R)
• M18: 16,669,541 km (0.042 R)
• M19: 17,680,673 km (0.055 R)
• M20: 21,872,705 km (0.116 R)
• M21: 22,338,852 km (0.104 R)

Planet 6 - Gas Giant

Semi-Major Axis: 4.59 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 764.7

Radius: 8.9

Gravity: 9.65 G

Time & Orbit

Eccentricity (e): 0.139

Orbit Range: 3.95 AU - 5.23 AU

Year: 6349 Days

Day: 9.3 Hours

Environment

Temp: -224 °C

Axial Tilt: 13.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (32)

Outer Limit: 40,207,758 km

• M1: 111,002 km (0.1 R)
• M2: 539,001 km (0.107 R)
• M3: 958,474 km (0.104 R)
• M4: 1,667,418 km (0.094 R)
• M5: 2,561,564 km (0.101 R)
• M6: 2,981,934 km (0.106 R)
• M7: 3,792,904 km (0.1 R)
• M8: 4,633,794 km (0.062 R)
• M9: 5,319,700 km (0.077 R)
• M10: 5,687,262 km (0.085 R)
• M11: 6,715,897 km (0.04 R)
• M12: 8,021,139 km (0.087 R)
• M13: 11,474,157 km (0.118 R)
• M14: 11,830,349 km (0.066 R)
• M15: 12,193,872 km (0.056 R)
• M16: 12,672,136 km (0.099 R)
• M17: 13,894,052 km (0.076 R)
• M18: 14,240,670 km (0.042 R)
• M19: 14,771,144 km (0.113 R)
• M20: 16,635,283 km (0.075 R)
• M21: 18,030,134 km (0.041 R)
• M22: 21,355,096 km (0.098 R)
• M23: 23,000,673 km (0.079 R)
• M24: 23,485,819 km (0.106 R)
• M25: 24,644,753 km (0.096 R)
• M26: 26,190,249 km (0.037 R)
• M27: 27,436,100 km (0.08 R)
• M28: 27,981,983 km (0.113 R)
• M29: 28,442,445 km (0.119 R)
• M30: 29,283,933 km (0.096 R)
• M31: 34,790,780 km (0.101 R)
• M32: 36,404,343 km (0.042 R)

Planet 7 - Gas Giant

Semi-Major Axis: 5.76 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 890.9

Radius: 10.1

Gravity: 8.73 G

Time & Orbit

Eccentricity (e): 0.225

Orbit Range: 4.46 AU - 7.06 AU

Year: 8926 Days

Day: 7.9 Hours

Environment

Temp: -227 °C

Axial Tilt: 25.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (31)

Outer Limit: 40,207,758 km

• M1: 125,662 km (0.083 R)
• M2: 613,202 km (0.108 R)
• M3: 1,131,708 km (0.092 R)
• M4: 1,879,996 km (0.026 R)
• M5: 3,062,119 km (0.114 R)
• M6: 3,508,968 km (0.092 R)
• M7: 4,246,635 km (0.068 R)
• M8: 4,865,372 km (0.115 R)
• M9: 5,543,050 km (0.098 R)
• M10: 7,409,882 km (0.084 R)
• M11: 8,758,955 km (0.12 R)
• M12: 9,132,202 km (0.055 R)
• M13: 11,160,749 km (0.077 R)
• M14: 11,655,619 km (0.038 R)
• M15: 13,411,599 km (0.086 R)
• M16: 14,288,691 km (0.089 R)
• M17: 17,077,644 km (0.091 R)
• M18: 19,571,291 km (0.072 R)
• M19: 23,887,638 km (0.083 R)
• M20: 24,988,380 km (0.101 R)
• M21: 25,740,857 km (0.092 R)
• M22: 26,122,631 km (0.082 R)
• M23: 26,702,472 km (0.068 R)
• M24: 27,192,255 km (0.038 R)
• M25: 30,576,159 km (0.11 R)
• M26: 31,982,978 km (0.113 R)
• M27: 32,535,443 km (0.099 R)
• M28: 36,342,409 km (0.116 R)
• M29: 39,797,222 km (0.117 R)
• M30: 44,827,900 km (0.115 R)
• M31: 47,209,647 km (0.039 R)

Planet 8 - Ice Giant

Semi-Major Axis: 8.38 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 164.8

Radius: 6.4

Gravity: 4.02 G

Time & Orbit

Eccentricity (e): 0.211

Orbit Range: 6.61 AU - 10.15 AU

Year: 15663 Days

Day: 22.3 Hours

Environment

Temp: -234 °C

Axial Tilt: 47.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 40,207,758 km

• M1: 79,586 km (0.082 R)
• M2: 302,038 km (0.115 R)
• M3: 506,838 km (0.095 R)
• M4: 760,705 km (0.091 R)
• M5: 1,419,385 km (0.079 R)
• M6: 2,229,756 km (0.035 R)
• M7: 2,667,031 km (0.099 R)
• M8: 3,428,484 km (0.114 R)
• M9: 3,909,591 km (0.12 R)
• M10: 4,272,515 km (0.09 R)
• M11: 4,489,731 km (0.117 R)
• M12: 5,125,821 km (0.079 R)
• M13: 6,087,586 km (0.028 R)
• M14: 6,363,295 km (0.109 R)
• M15: 7,126,693 km (0.115 R)
• M16: 8,532,315 km (0.103 R)
• M17: 8,747,287 km (0.117 R)
• M18: 10,161,435 km (0.11 R)
• M19: 17,144,514 km (0.102 R)
• M20: 19,195,800 km (0.116 R)
• M21: 21,326,523 km (0.062 R)
• M22: 22,941,581 km (0.075 R)
• M23: 24,463,291 km (0.082 R)
• M24: 34,159,627 km (0.112 R)

Kuiper Belt

Range: 30 - 60 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 331 - 14,198 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit