🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.29 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.57 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.59

Radius: 1.46

Gravity: 1.22 G

Time & Orbit

Eccentricity (e): 0.164

Orbit Range: 0.48 AU - 0.66 AU

Year: 282 Days

Day: 44.5 Hours

Environment

Temp: -115 °C

Axial Tilt: 37.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 34,875,507 km

• M1: 398,379 km (0.069 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.69 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 114.6

Radius: 13

Gravity: 0.68 G

Time & Orbit

Eccentricity (e): 0.075

Orbit Range: 0.64 AU - 0.74 AU

Year: 376 Days

Day: 13.8 Hours

Environment

Temp: -132 °C

Axial Tilt: 18.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 34,875,507 km

• M1: 161,715 km (0.113 R)
• M2: 664,514 km (0.056 R)
• M3: 1,118,842 km (0.09 R)
• M4: 1,532,929 km (0.048 R)
• M5: 1,963,023 km (0.065 R)
• M6: 2,511,898 km (0.102 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.73 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 905.4

Radius: 8.5

Gravity: 12.53 G

Time & Orbit

Eccentricity (e): 0.088

Orbit Range: 0.67 AU - 0.79 AU

Year: 409 Days

Day: 12.8 Hours

Environment

Temp: -131 °C

Axial Tilt: 166.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 34,875,507 km

• M1: 105,766 km (0.048 R)
• M2: 371,302 km (0.115 R)
• M3: 657,782 km (0.08 R)
• M4: 1,099,694 km (0.099 R)
• M5: 1,799,812 km (0.105 R)
• M6: 2,465,074 km (0.104 R)
• M7: 3,823,722 km (0.058 R)
• M8: 4,177,221 km (0.099 R)
• M9: 4,582,033 km (0.057 R)
• M10: 4,856,096 km (0.118 R)
• M11: 5,521,358 km (0.064 R)
• M12: 5,885,031 km (0.094 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.75 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 999.6

Radius: 13.4

Gravity: 5.57 G

Time & Orbit

Eccentricity (e): 0.219

Orbit Range: 0.59 AU - 0.91 AU

Year: 426 Days

Day: 12.4 Hours

Environment

Temp: -142 °C

Axial Tilt: 105.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 34,875,507 km

• M1: 166,652 km (0.108 R)
• M2: 602,580 km (0.1 R)
• M3: 1,029,383 km (0.106 R)
• M4: 1,656,048 km (0.093 R)
• M5: 2,190,711 km (0.094 R)
• M6: 2,872,728 km (0.038 R)
• M7: 3,731,719 km (0.095 R)
• M8: 4,308,119 km (0.087 R)
• M9: 4,755,716 km (0.109 R)
• M10: 5,502,958 km (0.1 R)
• M11: 6,440,488 km (0.11 R)

Planet 5 - Gas Giant

Semi-Major Axis: 0.96 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 707.7

Radius: 10.7

Gravity: 6.18 G

Time & Orbit

Eccentricity (e): 0.211

Orbit Range: 0.76 AU - 1.16 AU

Year: 617 Days

Day: 6.5 Hours

Environment

Temp: -147 °C

Axial Tilt: 55.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 34,875,507 km

• M1: 133,142 km (0.083 R)
• M2: 664,364 km (0.057 R)
• M3: 1,002,306 km (0.053 R)
• M4: 1,459,626 km (0.103 R)
• M5: 2,319,066 km (0.098 R)
• M6: 2,671,818 km (0.094 R)
• M7: 3,357,724 km (0.105 R)
• M8: 3,953,273 km (0.107 R)
• M9: 4,322,331 km (0.112 R)
• M10: 5,078,848 km (0.064 R)
• M11: 5,444,465 km (0.072 R)
• M12: 6,307,196 km (0.098 R)
• M13: 6,709,764 km (0.095 R)
• M14: 7,107,993 km (0.119 R)

Asteroid Belt

Center: 2.29 AU

Composition

Type: Outer System (Icy)

A dense region of planetesimals and debris.

Boundary

Planet 6 - Gas Giant

Semi-Major Axis: 3.61 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 384.3

Radius: 9

Gravity: 4.74 G

Time & Orbit

Eccentricity (e): 0.005

Orbit Range: 3.59 AU - 3.63 AU

Year: 4500 Days

Day: 12 Hours

Environment

Temp: -206 °C

Axial Tilt: 7.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 34,875,507 km

• M1: 111,899 km (0.076 R)
• M2: 729,439 km (0.05 R)
• M3: 1,052,271 km (0.07 R)
• M4: 1,461,272 km (0.073 R)
• M5: 2,147,627 km (0.118 R)
• M6: 2,587,744 km (0.089 R)
• M7: 3,087,102 km (0.095 R)
• M8: 3,934,574 km (0.092 R)
• M9: 5,202,266 km (0.095 R)
• M10: 6,844,551 km (0.117 R)
• M11: 8,345,317 km (0.087 R)
• M12: 8,879,082 km (0.081 R)
• M13: 10,093,668 km (0.032 R)
• M14: 12,028,866 km (0.092 R)
• M15: 13,755,524 km (0.042 R)
• M16: 15,962,542 km (0.074 R)
• M17: 21,921,623 km (0.081 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.89 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 514.8

Radius: 13.8

Gravity: 2.7 G

Time & Orbit

Eccentricity (e): 0.008

Orbit Range: 3.86 AU - 3.92 AU

Year: 5033 Days

Day: 9.5 Hours

Environment

Temp: -217 °C

Axial Tilt: 31.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 34,875,507 km

• M1: 171,888 km (0.054 R)
• M2: 812,616 km (0.115 R)
• M3: 1,570,927 km (0.088 R)
• M4: 2,230,953 km (0.056 R)
• M5: 3,455,112 km (0.095 R)
• M6: 4,182,308 km (0.056 R)
• M7: 4,830,964 km (0.115 R)
• M8: 5,914,801 km (0.104 R)
• M9: 7,321,469 km (0.115 R)
• M10: 8,121,668 km (0.045 R)
• M11: 8,940,866 km (0.099 R)
• M12: 9,450,397 km (0.113 R)
• M13: 10,571,034 km (0.052 R)
• M14: 11,824,814 km (0.106 R)
• M15: 12,730,629 km (0.102 R)
• M16: 13,785,145 km (0.037 R)
• M17: 14,307,241 km (0.119 R)
• M18: 14,842,652 km (0.111 R)
• M19: 15,953,715 km (0.094 R)
• M20: 17,968,649 km (0.111 R)
• M21: 21,232,725 km (0.112 R)
• M22: 23,370,479 km (0.079 R)
• M23: 23,814,784 km (0.09 R)
• M24: 25,104,019 km (0.094 R)

Planet 8 - Gas Giant

Semi-Major Axis: 5.18 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 32.6

Radius: 14.5

Gravity: 0.16 G

Time & Orbit

Eccentricity (e): 0.13

Orbit Range: 4.51 AU - 5.85 AU

Year: 7734 Days

Day: 11.1 Hours

Environment

Temp: -223 °C

Axial Tilt: 34.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 34,875,507 km

• M1: 226,192 km (0.08 R)
• M2: 1,524,103 km (0.114 R)
• M3: 2,494,694 km (0.099 R)
• M4: 4,887,811 km (0.03 R)
• M5: 6,779,626 km (0.101 R)
• M6: 9,930,755 km (0.093 R)
• M7: 11,547,011 km (0.104 R)

Planet 9 - Ice Giant

Semi-Major Axis: 6.37 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 237.2

Radius: 3.3

Gravity: 21.78 G

Time & Orbit

Eccentricity (e): 0.216

Orbit Range: 4.99 AU - 7.75 AU

Year: 10547 Days

Day: 22.3 Hours

Environment

Temp: -220 °C

Axial Tilt: 33.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (26)

Outer Limit: 34,875,507 km

• M1: 41,588 km (0.085 R)
• M2: 186,399 km (0.118 R)
• M3: 387,309 km (0.106 R)
• M4: 516,561 km (0.112 R)
• M5: 726,746 km (0.049 R)
• M6: 1,098,946 km (0.043 R)
• M7: 1,748,949 km (0.078 R)
• M8: 1,878,052 km (0.111 R)
• M9: 2,204,175 km (0.058 R)
• M10: 2,715,201 km (0.082 R)
• M11: 3,110,738 km (0.099 R)
• M12: 4,826,925 km (0.037 R)
• M13: 7,565,314 km (0.06 R)
• M14: 7,716,707 km (0.109 R)
• M15: 9,087,323 km (0.111 R)
• M16: 9,607,474 km (0.118 R)
• M17: 9,740,467 km (0.107 R)
• M18: 10,517,927 km (0.119 R)
• M19: 10,802,013 km (0.118 R)
• M20: 11,434,812 km (0.113 R)
• M21: 16,193,222 km (0.053 R)
• M22: 16,318,734 km (0.106 R)
• M23: 17,876,347 km (0.088 R)
• M24: 18,348,628 km (0.036 R)
• M25: 19,388,482 km (0.101 R)
• M26: 34,459,122 km (0.065 R)

Kuiper Belt

Range: 30 - 52 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 318 - 14,914 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit