🌌 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: 1.46

Radius: 1.16

Gravity: 1.09 G

Time & Orbit

Eccentricity (e): 0.183

Orbit Range: 0.49 AU - 0.71 AU

Year: 300 Days

Day: 47.5 Hours

Environment

Temp: -125 °C

Axial Tilt: 24.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.93 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 567.5

Radius: 9

Gravity: 7.01 G

Time & Orbit

Eccentricity (e): 0.177

Orbit Range: 0.77 AU - 1.09 AU

Year: 579 Days

Day: 10.7 Hours

Environment

Temp: -163 °C

Axial Tilt: 18.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 49,680,988 km

• M1: 112,049 km (0.034 R)
• M2: 439,519 km (0.086 R)
• M3: 901,028 km (0.089 R)
• M4: 1,332,618 km (0.094 R)
• M5: 2,140,746 km (0.112 R)
• M6: 2,797,031 km (0.113 R)
• M7: 3,184,490 km (0.098 R)
• M8: 3,659,613 km (0.101 R)
• M9: 4,053,504 km (0.077 R)
• M10: 5,373,406 km (0.108 R)
• M11: 6,011,291 km (0.091 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.02 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 661.1

Radius: 13.2

Gravity: 3.79 G

Time & Orbit

Eccentricity (e): 0.142

Orbit Range: 0.88 AU - 1.16 AU

Year: 665 Days

Day: 11 Hours

Environment

Temp: -167 °C

Axial Tilt: 42.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 49,680,988 km

• M1: 164,109 km (0.05 R)
• M2: 700,417 km (0.034 R)
• M3: 1,246,898 km (0.041 R)
• M4: 1,816,567 km (0.11 R)
• M5: 2,547,053 km (0.102 R)
• M6: 3,790,361 km (0.103 R)
• M7: 4,315,300 km (0.102 R)
• M8: 5,090,816 km (0.119 R)
• M9: 5,621,439 km (0.117 R)
• M10: 6,794,137 km (0.084 R)
• M11: 7,306,659 km (0.116 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.05 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 397.9

Radius: 10.9

Gravity: 3.35 G

Time & Orbit

Eccentricity (e): 0

Orbit Range: 1.05 AU - 1.05 AU

Year: 695 Days

Day: 7.6 Hours

Environment

Temp: -166 °C

Axial Tilt: 17.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 49,680,988 km

• M1: 135,536 km (0.112 R)
• M2: 476,469 km (0.117 R)
• M3: 1,019,360 km (0.118 R)
• M4: 1,482,066 km (0.11 R)
• M5: 1,888,075 km (0.116 R)
• M6: 2,301,862 km (0.068 R)
• M7: 2,659,401 km (0.061 R)
• M8: 3,054,489 km (0.102 R)
• M9: 3,720,948 km (0.049 R)
• M10: 4,572,459 km (0.106 R)
• M11: 5,343,486 km (0.048 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.92 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 625.3

Radius: 11.6

Gravity: 4.65 G

Time & Orbit

Eccentricity (e): 0.176

Orbit Range: 1.58 AU - 2.26 AU

Year: 1718 Days

Day: 9 Hours

Environment

Temp: -179 °C

Axial Tilt: 41.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 49,680,988 km

• M1: 144,212 km (0.08 R)
• M2: 539,899 km (0.11 R)
• M3: 988,094 km (0.077 R)
• M4: 1,537,866 km (0.091 R)
• M5: 1,943,725 km (0.115 R)
• M6: 2,737,043 km (0.114 R)
• M7: 3,155,617 km (0.05 R)
• M8: 4,346,267 km (0.078 R)
• M9: 5,453,441 km (0.09 R)
• M10: 6,193,202 km (0.068 R)
• M11: 6,714,252 km (0.119 R)
• M12: 7,318,328 km (0.058 R)
• M13: 8,160,414 km (0.058 R)
• M14: 9,097,346 km (0.106 R)
• M15: 10,827,894 km (0.082 R)
• M16: 14,283,305 km (0.106 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.9 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 642

Radius: 9

Gravity: 7.93 G

Time & Orbit

Eccentricity (e): 0.141

Orbit Range: 2.49 AU - 3.31 AU

Year: 3189 Days

Day: 10.5 Hours

Environment

Temp: -209 °C

Axial Tilt: 137 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 49,680,988 km

• M1: 112,198 km (0.118 R)
• M2: 468,840 km (0.091 R)
• M3: 786,286 km (0.118 R)
• M4: 1,354,908 km (0.087 R)
• M5: 2,110,078 km (0.097 R)
• M6: 2,520,874 km (0.108 R)
• M7: 3,410,083 km (0.105 R)
• M8: 3,855,736 km (0.095 R)
• M9: 4,562,735 km (0.108 R)
• M10: 5,848,678 km (0.05 R)
• M11: 6,204,871 km (0.074 R)
• M12: 7,143,747 km (0.107 R)
• M13: 7,583,116 km (0.089 R)
• M14: 8,344,120 km (0.052 R)
• M15: 9,227,945 km (0.084 R)
• M16: 10,770,000 km (0.099 R)
• M17: 11,559,577 km (0.119 R)
• M18: 12,747,534 km (0.069 R)
• M19: 15,006,462 km (0.092 R)
• M20: 19,625,146 km (0.071 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.35 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 477.4

Radius: 10.5

Gravity: 4.33 G

Time & Orbit

Eccentricity (e): 0.208

Orbit Range: 2.65 AU - 4.05 AU

Year: 3959 Days

Day: 6.6 Hours

Environment

Temp: -199 °C

Axial Tilt: 9.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 49,680,988 km

• M1: 130,898 km (0.107 R)
• M2: 465,698 km (0.119 R)
• M3: 1,066,184 km (0.046 R)
• M4: 1,482,066 km (0.109 R)
• M5: 1,879,548 km (0.103 R)
• M6: 2,995,548 km (0.081 R)
• M7: 3,580,326 km (0.042 R)
• M8: 5,666,019 km (0.042 R)
• M9: 7,044,265 km (0.103 R)
• M10: 7,811,851 km (0.115 R)
• M11: 8,848,564 km (0.028 R)
• M12: 12,969,986 km (0.118 R)
• M13: 14,171,406 km (0.086 R)
• M14: 14,824,700 km (0.077 R)
• M15: 16,518,597 km (0.1 R)
• M16: 16,905,756 km (0.077 R)
• M17: 17,469,291 km (0.096 R)
• M18: 19,113,970 km (0.095 R)
• M19: 20,161,455 km (0.106 R)
• M20: 21,573,359 km (0.091 R)

Planet 8 - Ice Giant

Semi-Major Axis: 6.45 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 560.5

Radius: 6.1

Gravity: 15.06 G

Time & Orbit

Eccentricity (e): 0.101

Orbit Range: 5.8 AU - 7.1 AU

Year: 10577 Days

Day: 22.5 Hours

Environment

Temp: -214 °C

Axial Tilt: 9.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 49,680,988 km

• M1: 75,846 km (0.041 R)
• M2: 280,795 km (0.117 R)
• M3: 518,656 km (0.083 R)
• M4: 726,298 km (0.11 R)
• M5: 1,612,665 km (0.093 R)
• M6: 2,467,766 km (0.101 R)
• M7: 2,983,131 km (0.073 R)
• M8: 4,869,261 km (0.114 R)
• M9: 6,312,282 km (0.064 R)
• M10: 7,976,259 km (0.056 R)
• M11: 9,141,627 km (0.106 R)
• M12: 10,212,897 km (0.111 R)
• M13: 13,073,208 km (0.109 R)
• M14: 18,450,205 km (0.104 R)
• M15: 18,676,397 km (0.071 R)
• M16: 27,029,792 km (0.074 R)
• M17: 29,733,175 km (0.059 R)
• M18: 39,662,435 km (0.095 R)

Planet 9 - Ice Giant

Semi-Major Axis: 7.01 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 531.1

Radius: 5.3

Gravity: 18.91 G

Time & Orbit

Eccentricity (e): 0.108

Orbit Range: 6.25 AU - 7.77 AU

Year: 11984 Days

Day: 20.8 Hours

Environment

Temp: -220 °C

Axial Tilt: 6.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (28)

Outer Limit: 49,680,988 km

• M1: 65,973 km (0.097 R)
• M2: 331,808 km (0.029 R)
• M3: 669,600 km (0.044 R)
• M4: 1,120,488 km (0.111 R)
• M5: 1,473,689 km (0.091 R)
• M6: 1,737,878 km (0.098 R)
• M7: 2,138,950 km (0.111 R)
• M8: 2,498,434 km (0.089 R)
• M9: 5,054,463 km (0.104 R)
• M10: 5,249,988 km (0.047 R)
• M11: 6,047,195 km (0.105 R)
• M12: 8,967,196 km (0.119 R)
• M13: 10,101,147 km (0.085 R)
• M14: 11,550,601 km (0.115 R)
• M15: 18,507,650 km (0.115 R)
• M16: 18,817,019 km (0.059 R)
• M17: 19,208,815 km (0.098 R)
• M18: 23,160,892 km (0.043 R)
• M19: 24,528,067 km (0.119 R)
• M20: 25,659,775 km (0.058 R)
• M21: 26,531,182 km (0.1 R)
• M22: 29,368,007 km (0.064 R)
• M23: 32,737,549 km (0.101 R)
• M24: 34,108,315 km (0.09 R)
• M25: 34,925,268 km (0.049 R)
• M26: 42,202,906 km (0.073 R)
• M27: 43,279,861 km (0.1 R)
• M28: 48,646,385 km (0.097 R)

Kuiper Belt

Range: 30 - 53 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 257 - 14,660 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit