🌌 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: 0.59 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.2

Radius: 1.37

Gravity: 1.17 G

Time & Orbit

Eccentricity (e): 0.089

Orbit Range: 0.54 AU - 0.64 AU

Year: 293 Days

Day: 30.1 Hours

Environment

Temp: -134 °C

Axial Tilt: 1.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 77,987,495 km

• M1: 117,285 km (0.099 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.72 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 306.2

Radius: 14.5

Gravity: 1.46 G

Time & Orbit

Eccentricity (e): 0.152

Orbit Range: 0.61 AU - 0.83 AU

Year: 394 Days

Day: 12.7 Hours

Environment

Temp: -130 °C

Axial Tilt: 22.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 77,987,495 km

• M1: 180,265 km (0.114 R)
• M2: 635,641 km (0.106 R)
• M3: 1,333,665 km (0.107 R)
• M4: 1,801,607 km (0.115 R)
• M5: 2,325,499 km (0.102 R)
• M6: 2,794,039 km (0.102 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.74 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 308.3

Radius: 14.4

Gravity: 1.49 G

Time & Orbit

Eccentricity (e): 0.17

Orbit Range: 0.61 AU - 0.87 AU

Year: 411 Days

Day: 10 Hours

Environment

Temp: -138 °C

Axial Tilt: 39.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 77,987,495 km

• M1: 179,218 km (0.089 R)
• M2: 684,859 km (0.087 R)
• M3: 1,183,918 km (0.033 R)
• M4: 1,751,641 km (0.07 R)
• M5: 2,335,372 km (0.066 R)
• M6: 2,810,794 km (0.068 R)
• M7: 3,414,422 km (0.093 R)
• M8: 4,116,036 km (0.087 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.41 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 957.6

Radius: 11.4

Gravity: 7.37 G

Time & Orbit

Eccentricity (e): 0.102

Orbit Range: 1.27 AU - 1.55 AU

Year: 1081 Days

Day: 13 Hours

Environment

Temp: -167 °C

Axial Tilt: 4.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 77,987,495 km

• M1: 141,819 km (0.101 R)
• M2: 618,438 km (0.102 R)
• M3: 1,051,523 km (0.111 R)
• M4: 1,479,523 km (0.071 R)
• M5: 2,034,681 km (0.082 R)
• M6: 2,523,716 km (0.069 R)
• M7: 2,897,262 km (0.084 R)
• M8: 4,684,807 km (0.084 R)
• M9: 5,253,728 km (0.082 R)
• M10: 6,045,998 km (0.098 R)
• M11: 7,064,909 km (0.113 R)
• M12: 7,921,806 km (0.092 R)
• M13: 9,873,310 km (0.119 R)
• M14: 10,677,698 km (0.074 R)
• M15: 11,215,053 km (0.053 R)
• M16: 11,805,666 km (0.06 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.95 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 769.2

Radius: 8.5

Gravity: 10.65 G

Time & Orbit

Eccentricity (e): 0.064

Orbit Range: 1.83 AU - 2.07 AU

Year: 1758 Days

Day: 9.6 Hours

Environment

Temp: -181 °C

Axial Tilt: 32.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 77,987,495 km

• M1: 105,766 km (0.118 R)
• M2: 435,779 km (0.072 R)
• M3: 806,333 km (0.048 R)
• M4: 1,160,431 km (0.111 R)
• M5: 1,474,287 km (0.113 R)
• M6: 1,823,299 km (0.077 R)
• M7: 2,202,380 km (0.065 R)
• M8: 2,717,894 km (0.072 R)
• M9: 3,073,638 km (0.064 R)
• M10: 3,527,817 km (0.08 R)
• M11: 4,530,123 km (0.105 R)
• M12: 5,341,841 km (0.086 R)
• M13: 5,999,473 km (0.084 R)
• M14: 7,168,281 km (0.096 R)
• M15: 8,420,415 km (0.104 R)
• M16: 9,677,037 km (0.093 R)
• M17: 10,332,575 km (0.117 R)
• M18: 11,165,237 km (0.083 R)
• M19: 11,617,023 km (0.113 R)
• M20: 11,925,045 km (0.1 R)
• M21: 12,557,395 km (0.115 R)
• M22: 14,105,284 km (0.063 R)
• M23: 15,496,694 km (0.045 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.05 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 640.1

Radius: 10.7

Gravity: 5.59 G

Time & Orbit

Eccentricity (e): 0.018

Orbit Range: 3 AU - 3.1 AU

Year: 3439 Days

Day: 9.1 Hours

Environment

Temp: -193 °C

Axial Tilt: 35.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 77,987,495 km

• M1: 134,488 km (0.067 R)
• M2: 477,666 km (0.12 R)
• M3: 1,675,047 km (0.114 R)
• M4: 2,107,984 km (0.042 R)
• M5: 2,553,336 km (0.075 R)
• M6: 3,149,035 km (0.112 R)
• M7: 3,499,543 km (0.115 R)
• M8: 4,458,316 km (0.027 R)
• M9: 5,023,796 km (0.108 R)
• M10: 6,270,096 km (0.104 R)
• M11: 7,104,552 km (0.079 R)
• M12: 8,848,564 km (0.107 R)
• M13: 9,858,948 km (0.096 R)
• M14: 10,212,299 km (0.114 R)
• M15: 12,242,491 km (0.097 R)
• M16: 12,743,195 km (0.115 R)
• M17: 13,400,080 km (0.078 R)
• M18: 17,085,124 km (0.085 R)
• M19: 18,116,901 km (0.074 R)
• M20: 18,707,812 km (0.096 R)

Planet 7 - Gas Giant

Semi-Major Axis: 4.43 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 909.7

Radius: 12.9

Gravity: 5.47 G

Time & Orbit

Eccentricity (e): 0.209

Orbit Range: 3.5 AU - 5.36 AU

Year: 6020 Days

Day: 12.2 Hours

Environment

Temp: -205 °C

Axial Tilt: 18.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (26)

Outer Limit: 77,987,495 km

• M1: 164,258 km (0.109 R)
• M2: 575,204 km (0.099 R)
• M3: 1,101,340 km (0.088 R)
• M4: 1,516,922 km (0.113 R)
• M5: 1,979,329 km (0.097 R)
• M6: 2,554,384 km (0.055 R)
• M7: 3,134,375 km (0.071 R)
• M8: 3,945,644 km (0.077 R)
• M9: 4,780,101 km (0.066 R)
• M10: 5,572,969 km (0.042 R)
• M11: 6,182,132 km (0.098 R)
• M12: 7,308,604 km (0.043 R)
• M13: 7,920,908 km (0.055 R)
• M14: 8,989,037 km (0.064 R)
• M15: 10,962,981 km (0.08 R)
• M16: 15,940,401 km (0.095 R)
• M17: 16,645,007 km (0.076 R)
• M18: 17,170,395 km (0.104 R)
• M19: 18,883,889 km (0.102 R)
• M20: 19,818,726 km (0.103 R)
• M21: 21,470,586 km (0.109 R)
• M22: 22,015,122 km (0.089 R)
• M23: 28,069,497 km (0.095 R)
• M24: 28,533,699 km (0.059 R)
• M25: 31,228,107 km (0.111 R)
• M26: 32,028,007 km (0.086 R)

Planet 8 - Ice Giant

Semi-Major Axis: 6.9 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 290.7

Radius: 3.8

Gravity: 20.13 G

Time & Orbit

Eccentricity (e): 0.228

Orbit Range: 5.33 AU - 8.47 AU

Year: 11703 Days

Day: 23.2 Hours

Environment

Temp: -233 °C

Axial Tilt: 44.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (32)

Outer Limit: 77,987,495 km

• M1: 47,273 km (0.084 R)
• M2: 276,457 km (0.047 R)
• M3: 428,000 km (0.097 R)
• M4: 634,893 km (0.035 R)
• M5: 757,564 km (0.073 R)
• M6: 896,390 km (0.114 R)
• M7: 1,169,706 km (0.07 R)
• M8: 1,549,385 km (0.112 R)
• M9: 1,789,789 km (0.078 R)
• M10: 2,188,168 km (0.1 R)
• M11: 2,454,003 km (0.103 R)
• M12: 3,136,020 km (0.081 R)
• M13: 5,162,323 km (0.08 R)
• M14: 5,285,143 km (0.118 R)
• M15: 6,097,160 km (0.074 R)
• M16: 6,914,563 km (0.053 R)
• M17: 8,720,658 km (0.037 R)
• M18: 9,708,453 km (0.035 R)
• M19: 10,037,718 km (0.088 R)
• M20: 11,956,759 km (0.082 R)
• M21: 12,945,751 km (0.091 R)
• M22: 13,810,427 km (0.027 R)
• M23: 14,287,045 km (0.109 R)
• M24: 18,934,902 km (0.106 R)
• M25: 19,374,570 km (0.05 R)
• M26: 24,239,493 km (0.088 R)
• M27: 25,460,510 km (0.105 R)
• M28: 30,255,122 km (0.102 R)
• M29: 31,977,891 km (0.098 R)
• M30: 32,496,846 km (0.037 R)
• M31: 32,810,852 km (0.092 R)
• M32: 35,396,352 km (0.108 R)

Planet 9 - Ice Giant

Semi-Major Axis: 8.94 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 216.1

Radius: 4.9

Gravity: 9 G

Time & Orbit

Eccentricity (e): 0.133

Orbit Range: 7.75 AU - 10.13 AU

Year: 17259 Days

Day: 16.2 Hours

Environment

Temp: -238 °C

Axial Tilt: 41.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (28)

Outer Limit: 77,987,495 km

• M1: 62,083 km (0.034 R)
• M2: 219,161 km (0.102 R)
• M3: 377,435 km (0.059 R)
• M4: 631,453 km (0.067 R)
• M5: 963,560 km (0.091 R)
• M6: 1,540,559 km (0.075 R)
• M7: 1,986,361 km (0.075 R)
• M8: 3,974,067 km (0.03 R)
• M9: 5,054,463 km (0.094 R)
• M10: 5,214,084 km (0.086 R)
• M11: 6,063,800 km (0.117 R)
• M12: 7,444,289 km (0.086 R)
• M13: 8,653,339 km (0.098 R)
• M14: 9,400,132 km (0.1 R)
• M15: 12,819,341 km (0.106 R)
• M16: 13,602,785 km (0.106 R)
• M17: 14,610,027 km (0.047 R)
• M18: 15,531,550 km (0.081 R)
• M19: 23,179,143 km (0.077 R)
• M20: 25,257,656 km (0.066 R)
• M21: 28,552,848 km (0.077 R)
• M22: 30,093,556 km (0.099 R)
• M23: 30,725,159 km (0.098 R)
• M24: 33,676,575 km (0.109 R)
• M25: 35,511,842 km (0.104 R)
• M26: 36,335,378 km (0.107 R)
• M27: 36,811,548 km (0.104 R)
• M28: 41,157,665 km (0.086 R)

Planet 10 - Ice Giant

Semi-Major Axis: 9.79 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 754.2

Radius: 3.8

Gravity: 52.23 G

Time & Orbit

Eccentricity (e): 0.06

Orbit Range: 9.2 AU - 10.38 AU

Year: 19778 Days

Day: 21.2 Hours

Environment

Temp: -239 °C

Axial Tilt: 10.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 77,987,495 km

• M1: 47,273 km (0.072 R)
• M2: 165,754 km (0.092 R)
• M3: 289,771 km (0.088 R)
• M4: 625,170 km (0.059 R)
• M5: 865,872 km (0.105 R)
• M6: 3,683,698 km (0.045 R)
• M7: 5,224,855 km (0.056 R)
• M8: 6,731,904 km (0.069 R)
• M9: 7,733,013 km (0.064 R)
• M10: 8,666,803 km (0.078 R)
• M11: 10,204,669 km (0.118 R)
• M12: 12,873,645 km (0.106 R)
• M13: 18,893,613 km (0.1 R)
• M14: 22,864,688 km (0.107 R)
• M15: 31,630,525 km (0.088 R)
• M16: 34,667,960 km (0.107 R)
• M17: 39,654,057 km (0.059 R)
• M18: 42,863,979 km (0.113 R)
• M19: 48,081,504 km (0.107 R)
• M20: 52,440,337 km (0.063 R)
• M21: 61,733,357 km (0.097 R)

Kuiper Belt

Range: 30 - 50 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 549 - 16,378 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit