🌌 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: 0.62 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.42

Radius: 1.42

Gravity: 1.2 G

Time & Orbit

Eccentricity (e): 0.225

Orbit Range: 0.48 AU - 0.76 AU

Year: 320 Days

Day: 40.4 Hours

Environment

Temp: -123 °C

Axial Tilt: 39.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.82 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 754.1

Radius: 9.4

Gravity: 8.53 G

Time & Orbit

Eccentricity (e): 0.23

Orbit Range: 0.63 AU - 1.01 AU

Year: 487 Days

Day: 8.7 Hours

Environment

Temp: -142 °C

Axial Tilt: 5.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 76,758,130 km

• M1: 116,986 km (0.106 R)
• M2: 472,729 km (0.113 R)
• M3: 768,933 km (0.059 R)
• M4: 1,369,120 km (0.03 R)
• M5: 1,947,465 km (0.072 R)
• M6: 2,588,043 km (0.101 R)
• M7: 2,918,654 km (0.043 R)
• M8: 3,338,276 km (0.119 R)
• M9: 3,878,474 km (0.066 R)
• M10: 4,284,633 km (0.068 R)
• M11: 4,672,839 km (0.069 R)
• M12: 5,332,715 km (0.113 R)
• M13: 5,980,324 km (0.091 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.88 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 860.2

Radius: 10.1

Gravity: 8.43 G

Time & Orbit

Eccentricity (e): 0.248

Orbit Range: 0.66 AU - 1.1 AU

Year: 542 Days

Day: 5.9 Hours

Environment

Temp: -153 °C

Axial Tilt: 13.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 76,758,130 km

• M1: 125,662 km (0.059 R)
• M2: 497,114 km (0.111 R)
• M3: 910,453 km (0.055 R)
• M4: 1,246,150 km (0.092 R)
• M5: 1,627,625 km (0.114 R)
• M6: 2,217,639 km (0.061 R)
• M7: 2,664,488 km (0.048 R)
• M8: 3,014,846 km (0.029 R)
• M9: 3,565,516 km (0.1 R)
• M10: 5,067,478 km (0.093 R)
• M11: 5,519,114 km (0.048 R)
• M12: 5,922,131 km (0.104 R)
• M13: 6,483,273 km (0.089 R)
• M14: 6,911,571 km (0.062 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.51 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 51.3

Radius: 9.3

Gravity: 0.59 G

Time & Orbit

Eccentricity (e): 0.064

Orbit Range: 1.41 AU - 1.61 AU

Year: 1217 Days

Day: 12.1 Hours

Environment

Temp: -180 °C

Axial Tilt: 21.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 76,758,130 km

• M1: 116,537 km (0.057 R)
• M2: 1,521,710 km (0.099 R)
• M3: 1,821,204 km (0.093 R)
• M4: 3,050,301 km (0.107 R)
• M5: 3,660,660 km (0.06 R)
• M6: 4,115,587 km (0.11 R)

Planet 5 - Gas Giant

Semi-Major Axis: 4.63 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 312

Radius: 9.9

Gravity: 3.18 G

Time & Orbit

Eccentricity (e): 0.197

Orbit Range: 3.72 AU - 5.54 AU

Year: 6536 Days

Day: 9.2 Hours

Environment

Temp: -208 °C

Axial Tilt: 39.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (30)

Outer Limit: 76,758,130 km

• M1: 123,269 km (0.082 R)
• M2: 539,749 km (0.086 R)
• M3: 869,762 km (0.114 R)
• M4: 1,478,775 km (0.078 R)
• M5: 2,903,246 km (0.11 R)
• M6: 3,944,148 km (0.094 R)
• M7: 4,428,995 km (0.107 R)
• M8: 5,005,096 km (0.083 R)
• M9: 5,602,291 km (0.05 R)
• M10: 6,065,894 km (0.118 R)
• M11: 6,873,873 km (0.08 R)
• M12: 8,072,750 km (0.101 R)
• M13: 9,049,624 km (0.106 R)
• M14: 10,968,516 km (0.094 R)
• M15: 11,282,671 km (0.108 R)
• M16: 13,704,511 km (0.106 R)
• M17: 14,601,351 km (0.079 R)
• M18: 15,147,084 km (0.103 R)
• M19: 15,819,676 km (0.09 R)
• M20: 16,453,522 km (0.081 R)
• M21: 18,966,616 km (0.075 R)
• M22: 19,354,673 km (0.065 R)
• M23: 19,946,632 km (0.096 R)
• M24: 20,891,642 km (0.079 R)
• M25: 23,681,044 km (0.101 R)
• M26: 24,282,577 km (0.115 R)
• M27: 24,663,603 km (0.066 R)
• M28: 25,126,159 km (0.099 R)
• M29: 27,034,280 km (0.03 R)
• M30: 27,443,729 km (0.114 R)

Planet 6 - Gas Giant

Semi-Major Axis: 4.99 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 760.3

Radius: 9.1

Gravity: 9.18 G

Time & Orbit

Eccentricity (e): 0.24

Orbit Range: 3.79 AU - 6.19 AU

Year: 7312 Days

Day: 7.8 Hours

Environment

Temp: -218 °C

Axial Tilt: 18.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 76,758,130 km

• M1: 113,246 km (0.085 R)
• M2: 439,369 km (0.071 R)
• M3: 1,298,210 km (0.096 R)
• M4: 1,865,037 km (0.113 R)
• M5: 4,022,986 km (0.094 R)
• M6: 4,527,729 km (0.098 R)
• M7: 6,579,763 km (0.058 R)
• M8: 7,243,230 km (0.106 R)
• M9: 11,608,944 km (0.066 R)
• M10: 13,831,969 km (0.108 R)
• M11: 17,955,784 km (0.08 R)
• M12: 19,395,962 km (0.11 R)
• M13: 19,917,760 km (0.064 R)
• M14: 22,179,680 km (0.112 R)
• M15: 25,396,034 km (0.1 R)
• M16: 28,526,070 km (0.086 R)
• M17: 29,591,506 km (0.089 R)
• M18: 37,343,518 km (0.089 R)

Planet 7 - Gas Giant

Semi-Major Axis: 5.04 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 727.2

Radius: 10.1

Gravity: 7.13 G

Time & Orbit

Eccentricity (e): 0.13

Orbit Range: 4.38 AU - 5.7 AU

Year: 7423 Days

Day: 12.1 Hours

Environment

Temp: -211 °C

Axial Tilt: 10.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (29)

Outer Limit: 76,758,130 km

• M1: 132,993 km (0.094 R)
• M2: 454,927 km (0.049 R)
• M3: 869,313 km (0.114 R)
• M4: 1,226,254 km (0.085 R)
• M5: 1,795,174 km (0.104 R)
• M6: 2,199,388 km (0.087 R)
• M7: 2,663,889 km (0.038 R)
• M8: 3,044,017 km (0.095 R)
• M9: 3,840,327 km (0.058 R)
• M10: 4,221,652 km (0.112 R)
• M11: 5,679,782 km (0.099 R)
• M12: 6,074,721 km (0.05 R)
• M13: 7,841,920 km (0.061 R)
• M14: 10,260,918 km (0.119 R)
• M15: 12,913,438 km (0.094 R)
• M16: 15,416,659 km (0.082 R)
• M17: 20,052,847 km (0.087 R)
• M18: 20,739,052 km (0.053 R)
• M19: 21,757,814 km (0.104 R)
• M20: 26,530,434 km (0.108 R)
• M21: 27,824,157 km (0.09 R)
• M22: 28,486,726 km (0.113 R)
• M23: 29,548,871 km (0.108 R)
• M24: 30,040,449 km (0.118 R)
• M25: 30,838,105 km (0.11 R)
• M26: 31,649,823 km (0.108 R)
• M27: 33,955,575 km (0.108 R)
• M28: 34,386,567 km (0.09 R)
• M29: 38,198,320 km (0.11 R)

Planet 8 - Gas Giant

Semi-Major Axis: 5.49 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 405.4

Radius: 15

Gravity: 1.8 G

Time & Orbit

Eccentricity (e): 0.088

Orbit Range: 5.01 AU - 5.97 AU

Year: 8439 Days

Day: 9.9 Hours

Environment

Temp: -215 °C

Axial Tilt: 36 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 76,758,130 km

• M1: 186,549 km (0.083 R)
• M2: 693,237 km (0.116 R)
• M3: 1,786,049 km (0.046 R)
• M4: 2,509,055 km (0.082 R)
• M5: 3,379,565 km (0.089 R)
• M6: 4,018,049 km (0.09 R)
• M7: 5,098,295 km (0.039 R)
• M8: 5,847,332 km (0.085 R)
• M9: 6,532,490 km (0.103 R)
• M10: 8,914,687 km (0.091 R)
• M11: 9,735,231 km (0.087 R)
• M12: 10,652,715 km (0.096 R)
• M13: 11,477,298 km (0.092 R)
• M14: 12,084,815 km (0.095 R)
• M15: 14,673,457 km (0.077 R)
• M16: 15,511,354 km (0.119 R)
• M17: 16,957,068 km (0.118 R)
• M18: 18,082,044 km (0.057 R)
• M19: 20,999,951 km (0.105 R)
• M20: 21,603,877 km (0.077 R)
• M21: 31,032,134 km (0.084 R)
• M22: 35,616,261 km (0.093 R)

Planet 9 - Gas Giant

Semi-Major Axis: 5.58 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 86.8

Radius: 13.1

Gravity: 0.51 G

Time & Orbit

Eccentricity (e): 0.233

Orbit Range: 4.28 AU - 6.88 AU

Year: 8647 Days

Day: 10.1 Hours

Environment

Temp: -217 °C

Axial Tilt: 29.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 76,758,130 km

• M1: 162,912 km (0.053 R)
• M2: 1,875,359 km (0.053 R)
• M3: 2,357,662 km (0.063 R)
• M4: 3,230,117 km (0.107 R)
• M5: 4,221,951 km (0.084 R)
• M6: 5,306,984 km (0.073 R)
• M7: 6,257,679 km (0.106 R)
• M8: 7,256,843 km (0.111 R)
• M9: 8,090,702 km (0.088 R)
• M10: 13,910,059 km (0.091 R)
• M11: 14,494,238 km (0.116 R)
• M12: 17,664,666 km (0.1 R)
• M13: 19,835,481 km (0.113 R)
• M14: 20,638,672 km (0.056 R)

Planet 10 - Ice Giant

Semi-Major Axis: 8.96 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 908.7

Radius: 6.9

Gravity: 19.09 G

Time & Orbit

Eccentricity (e): 0.024

Orbit Range: 8.74 AU - 9.18 AU

Year: 17594 Days

Day: 17.1 Hours

Environment

Temp: -225 °C

Axial Tilt: 33.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (30)

Outer Limit: 76,758,130 km

• M1: 86,168 km (0.081 R)
• M2: 349,760 km (0.094 R)
• M3: 891,155 km (0.093 R)
• M4: 1,936,544 km (0.116 R)
• M5: 3,072,890 km (0.107 R)
• M6: 3,603,813 km (0.06 R)
• M7: 4,461,308 km (0.049 R)
• M8: 7,403,748 km (0.052 R)
• M9: 8,725,146 km (0.064 R)
• M10: 9,960,226 km (0.06 R)
• M11: 12,091,996 km (0.093 R)
• M12: 13,052,115 km (0.106 R)
• M13: 13,988,149 km (0.088 R)
• M14: 14,434,998 km (0.071 R)
• M15: 16,155,074 km (0.082 R)
• M16: 16,481,945 km (0.106 R)
• M17: 17,489,038 km (0.119 R)
• M18: 18,007,544 km (0.062 R)
• M19: 18,894,660 km (0.098 R)
• M20: 19,440,692 km (0.116 R)
• M21: 26,497,224 km (0.054 R)
• M22: 26,724,014 km (0.098 R)
• M23: 34,953,094 km (0.075 R)
• M24: 36,052,638 km (0.088 R)
• M25: 39,048,335 km (0.098 R)
• M26: 43,295,269 km (0.091 R)
• M27: 49,194,661 km (0.051 R)
• M28: 55,237,967 km (0.049 R)
• M29: 66,447,485 km (0.041 R)
• M30: 67,076,095 km (0.093 R)

Kuiper Belt

Range: 30 - 55 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 533 - 11,089 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit