🌌 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: 2.67

Radius: 1.48

Gravity: 1.22 G

Time & Orbit

Eccentricity (e): 0.25

Orbit Range: 0.44 AU - 0.74 AU

Year: 297 Days

Day: 41.7 Hours

Environment

Temp: -132 °C

Axial Tilt: 32.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.67 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.22

Radius: 1.38

Gravity: 1.17 G

Time & Orbit

Eccentricity (e): 0.095

Orbit Range: 0.61 AU - 0.73 AU

Year: 360 Days

Day: 23.3 Hours

Environment

Temp: -125 °C

Axial Tilt: 60.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 65,147,738 km

• M1: 145,559 km (0.061 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.03 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 957.8

Radius: 13.3

Gravity: 5.41 G

Time & Orbit

Eccentricity (e): 0.155

Orbit Range: 0.87 AU - 1.19 AU

Year: 686 Days

Day: 10.6 Hours

Environment

Temp: -151 °C

Axial Tilt: 16.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 65,147,738 km

• M1: 165,455 km (0.119 R)
• M2: 649,105 km (0.098 R)
• M3: 1,092,214 km (0.118 R)
• M4: 1,584,391 km (0.089 R)
• M5: 2,078,812 km (0.099 R)
• M6: 2,530,598 km (0.077 R)
• M7: 2,949,172 km (0.111 R)
• M8: 3,373,881 km (0.079 R)
• M9: 4,019,545 km (0.106 R)
• M10: 4,494,818 km (0.047 R)
• M11: 5,427,261 km (0.056 R)
• M12: 5,870,220 km (0.083 R)
• M13: 6,873,723 km (0.107 R)
• M14: 7,486,625 km (0.07 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.39 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 450.2

Radius: 9.9

Gravity: 4.59 G

Time & Orbit

Eccentricity (e): 0.105

Orbit Range: 1.24 AU - 1.54 AU

Year: 1075 Days

Day: 11.8 Hours

Environment

Temp: -173 °C

Axial Tilt: 1.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 65,147,738 km

• M1: 123,119 km (0.085 R)
• M2: 445,353 km (0.11 R)
• M3: 920,625 km (0.116 R)
• M4: 1,515,426 km (0.112 R)
• M5: 2,013,587 km (0.089 R)
• M6: 2,350,183 km (0.059 R)
• M7: 2,676,904 km (0.1 R)
• M8: 3,034,144 km (0.106 R)
• M9: 4,519,202 km (0.107 R)
• M10: 5,595,559 km (0.096 R)
• M11: 5,976,285 km (0.083 R)
• M12: 7,038,729 km (0.107 R)
• M13: 7,724,336 km (0.088 R)
• M14: 9,283,595 km (0.1 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.7 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 363.2

Radius: 11.1

Gravity: 2.95 G

Time & Orbit

Eccentricity (e): 0.166

Orbit Range: 1.42 AU - 1.98 AU

Year: 1454 Days

Day: 14 Hours

Environment

Temp: -187 °C

Axial Tilt: 13.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 65,147,738 km

• M1: 138,079 km (0.086 R)
• M2: 546,930 km (0.043 R)
• M3: 1,162,076 km (0.104 R)
• M4: 1,618,499 km (0.083 R)
• M5: 2,182,932 km (0.042 R)
• M6: 3,046,261 km (0.097 R)
• M7: 3,556,689 km (0.09 R)
• M8: 4,786,683 km (0.102 R)
• M9: 5,539,609 km (0.096 R)
• M10: 7,281,078 km (0.078 R)
• M11: 8,573,753 km (0.046 R)
• M12: 9,160,177 km (0.113 R)
• M13: 9,507,094 km (0.096 R)
• M14: 10,104,887 km (0.11 R)
• M15: 10,569,688 km (0.085 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.59 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 211.3

Radius: 13.2

Gravity: 1.21 G

Time & Orbit

Eccentricity (e): 0.215

Orbit Range: 2.03 AU - 3.15 AU

Year: 2734 Days

Day: 13.1 Hours

Environment

Temp: -196 °C

Axial Tilt: 39.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 65,147,738 km

• M1: 164,109 km (0.09 R)
• M2: 581,487 km (0.032 R)
• M3: 1,020,407 km (0.104 R)
• M4: 2,286,753 km (0.104 R)
• M5: 3,470,970 km (0.107 R)
• M6: 3,900,316 km (0.073 R)
• M7: 4,402,665 km (0.06 R)
• M8: 5,451,346 km (0.061 R)
• M9: 8,619,081 km (0.106 R)
• M10: 9,539,557 km (0.078 R)
• M11: 9,991,043 km (0.102 R)
• M12: 11,431,970 km (0.06 R)

Planet 7 - Gas Giant

Semi-Major Axis: 5.59 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 53.4

Radius: 13.8

Gravity: 0.28 G

Time & Orbit

Eccentricity (e): 0.032

Orbit Range: 5.41 AU - 5.77 AU

Year: 8670 Days

Day: 10 Hours

Environment

Temp: -228 °C

Axial Tilt: 10.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 65,147,738 km

• M1: 171,888 km (0.063 R)
• M2: 679,773 km (0.079 R)
• M3: 4,018,199 km (0.104 R)
• M4: 7,318,178 km (0.069 R)
• M5: 11,460,094 km (0.054 R)
• M6: 11,986,679 km (0.031 R)
• M7: 12,571,756 km (0.092 R)
• M8: 13,001,252 km (0.113 R)
• M9: 13,889,863 km (0.066 R)
• M10: 14,771,144 km (0.063 R)
• M11: 15,738,743 km (0.111 R)

Planet 8 - Ice Giant

Semi-Major Axis: 6.14 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 364.1

Radius: 3.2

Gravity: 35.56 G

Time & Orbit

Eccentricity (e): 0.209

Orbit Range: 4.86 AU - 7.42 AU

Year: 9981 Days

Day: 24.5 Hours

Environment

Temp: -217 °C

Axial Tilt: 28.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (33)

Outer Limit: 65,147,738 km

• M1: 42,935 km (0.041 R)
• M2: 233,522 km (0.11 R)
• M3: 1,054,665 km (0.101 R)
• M4: 1,309,131 km (0.068 R)
• M5: 1,686,566 km (0.097 R)
• M6: 2,182,334 km (0.052 R)
• M7: 2,556,478 km (0.056 R)
• M8: 2,909,828 km (0.106 R)
• M9: 3,076,929 km (0.089 R)
• M10: 3,339,623 km (0.029 R)
• M11: 4,853,105 km (0.116 R)
• M12: 5,088,272 km (0.108 R)
• M13: 5,239,217 km (0.116 R)
• M14: 6,139,646 km (0.087 R)
• M15: 6,916,059 km (0.101 R)
• M16: 8,660,819 km (0.117 R)
• M17: 10,386,431 km (0.067 R)
• M18: 10,875,915 km (0.069 R)
• M19: 11,742,984 km (0.116 R)
• M20: 13,498,515 km (0.065 R)
• M21: 13,671,600 km (0.092 R)
• M22: 15,109,535 km (0.087 R)
• M23: 16,579,334 km (0.064 R)
• M24: 17,794,068 km (0.025 R)
• M25: 21,791,922 km (0.079 R)
• M26: 23,495,542 km (0.099 R)
• M27: 26,169,754 km (0.101 R)
• M28: 28,848,453 km (0.119 R)
• M29: 31,400,593 km (0.068 R)
• M30: 34,420,076 km (0.107 R)
• M31: 34,851,068 km (0.054 R)
• M32: 35,944,628 km (0.05 R)
• M33: 38,315,007 km (0.108 R)

Planet 9 - Ice Giant

Semi-Major Axis: 8.8 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 958.3

Radius: 6.4

Gravity: 23.4 G

Time & Orbit

Eccentricity (e): 0.13

Orbit Range: 7.66 AU - 9.94 AU

Year: 17125 Days

Day: 20.1 Hours

Environment

Temp: -233 °C

Axial Tilt: 21.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (37)

Outer Limit: 65,147,738 km

• M1: 79,586 km (0.076 R)
• M2: 564,882 km (0.051 R)
• M3: 820,395 km (0.097 R)
• M4: 1,024,446 km (0.06 R)
• M5: 1,588,430 km (0.107 R)
• M6: 1,798,615 km (0.054 R)
• M7: 2,047,546 km (0.091 R)
• M8: 2,275,982 km (0.116 R)
• M9: 2,809,448 km (0.089 R)
• M10: 4,626,763 km (0.108 R)
• M11: 4,948,847 km (0.045 R)
• M12: 8,987,990 km (0.103 R)
• M13: 10,248,053 km (0.072 R)
• M14: 10,611,127 km (0.064 R)
• M15: 11,363,155 km (0.108 R)
• M16: 12,488,430 km (0.115 R)
• M17: 13,469,493 km (0.095 R)
• M18: 14,201,027 km (0.083 R)
• M19: 19,065,052 km (0.075 R)
• M20: 19,430,071 km (0.068 R)
• M21: 26,485,256 km (0.093 R)
• M22: 27,399,598 km (0.116 R)
• M23: 27,631,475 km (0.051 R)
• M24: 28,810,456 km (0.064 R)
• M25: 29,291,263 km (0.118 R)
• M26: 30,145,617 km (0.109 R)
• M27: 33,995,817 km (0.118 R)
• M28: 47,321,846 km (0.098 R)
• M29: 47,655,748 km (0.109 R)
• M30: 51,256,718 km (0.117 R)
• M31: 52,854,125 km (0.084 R)
• M32: 54,119,124 km (0.095 R)
• M33: 58,802,136 km (0.086 R)
• M34: 60,552,132 km (0.074 R)
• M35: 61,737,844 km (0.106 R)
• M36: 70,040,825 km (0.081 R)
• M37: 72,006,242 km (0.069 R)

Planet 10 - Ice Giant

Semi-Major Axis: 9.19 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 514.9

Radius: 7.4

Gravity: 9.4 G

Time & Orbit

Eccentricity (e): 0.052

Orbit Range: 8.71 AU - 9.67 AU

Year: 18276 Days

Day: 19.4 Hours

Environment

Temp: -237 °C

Axial Tilt: 37.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (28)

Outer Limit: 65,147,738 km

• M1: 113,395 km (0.103 R)
• M2: 490,681 km (0.117 R)
• M3: 925,562 km (0.106 R)
• M4: 1,262,008 km (0.105 R)
• M5: 1,629,869 km (0.042 R)
• M6: 2,106,039 km (0.104 R)
• M7: 3,495,354 km (0.097 R)
• M8: 3,775,701 km (0.11 R)
• M9: 7,331,792 km (0.086 R)
• M10: 7,887,249 km (0.096 R)
• M11: 8,371,198 km (0.107 R)
• M12: 9,239,314 km (0.109 R)
• M13: 14,144,030 km (0.08 R)
• M14: 14,713,699 km (0.098 R)
• M15: 18,541,459 km (0.07 R)
• M16: 19,922,397 km (0.112 R)
• M17: 21,093,898 km (0.096 R)
• M18: 24,172,174 km (0.096 R)
• M19: 24,986,136 km (0.112 R)
• M20: 28,313,043 km (0.101 R)
• M21: 33,151,337 km (0.084 R)
• M22: 37,155,773 km (0.107 R)
• M23: 39,343,492 km (0.1 R)
• M24: 41,326,861 km (0.09 R)
• M25: 51,580,598 km (0.075 R)
• M26: 58,009,566 km (0.108 R)
• M27: 59,100,135 km (0.069 R)
• M28: 62,643,360 km (0.067 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: 398 - 13,703 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit