🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.32 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.64 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.09

Radius: 1.34

Gravity: 1.16 G

Time & Orbit

Eccentricity (e): 0.227

Orbit Range: 0.49 AU - 0.79 AU

Year: 331 Days

Day: 34.6 Hours

Environment

Temp: -132 °C

Axial Tilt: 11.9 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.74 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 713.6

Radius: 11.9

Gravity: 5.04 G

Time & Orbit

Eccentricity (e): 0.048

Orbit Range: 0.7 AU - 0.78 AU

Year: 411 Days

Day: 12.6 Hours

Environment

Temp: -147 °C

Axial Tilt: 0.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 49,683,639 km

• M1: 148,102 km (0.105 R)
• M2: 553,961 km (0.092 R)
• M3: 1,040,902 km (0.072 R)
• M4: 1,453,343 km (0.043 R)
• M5: 1,874,611 km (0.053 R)
• M6: 2,414,659 km (0.117 R)
• M7: 2,813,786 km (0.111 R)
• M8: 3,268,564 km (0.108 R)
• M9: 3,734,860 km (0.118 R)
• M10: 4,123,366 km (0.11 R)
• M11: 4,524,887 km (0.096 R)
• M12: 4,998,065 km (0.108 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.83 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 706.2

Radius: 14.7

Gravity: 3.27 G

Time & Orbit

Eccentricity (e): 0.217

Orbit Range: 0.65 AU - 1.01 AU

Year: 488 Days

Day: 11.4 Hours

Environment

Temp: -140 °C

Axial Tilt: 0.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 49,683,639 km

• M1: 183,108 km (0.116 R)
• M2: 1,390,213 km (0.093 R)
• M3: 2,668,377 km (0.078 R)
• M4: 3,305,515 km (0.085 R)
• M5: 3,921,708 km (0.118 R)
• M6: 4,408,200 km (0.111 R)
• M7: 5,420,230 km (0.109 R)
• M8: 6,026,700 km (0.102 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.12 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 323.5

Radius: 13.1

Gravity: 1.89 G

Time & Orbit

Eccentricity (e): 0.047

Orbit Range: 1.07 AU - 1.17 AU

Year: 765 Days

Day: 11.8 Hours

Environment

Temp: -163 °C

Axial Tilt: 20.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 49,683,639 km

• M1: 166,054 km (0.087 R)
• M2: 835,953 km (0.058 R)
• M3: 1,424,172 km (0.119 R)
• M4: 3,375,526 km (0.109 R)
• M5: 3,944,297 km (0.112 R)
• M6: 4,382,918 km (0.113 R)
• M7: 5,478,124 km (0.11 R)
• M8: 6,155,204 km (0.052 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.39 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 586.9

Radius: 8.1

Gravity: 8.95 G

Time & Orbit

Eccentricity (e): 0.182

Orbit Range: 1.14 AU - 1.64 AU

Year: 1058 Days

Day: 11.1 Hours

Environment

Temp: -175 °C

Axial Tilt: 3.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 49,683,639 km

• M1: 100,829 km (0.109 R)
• M2: 450,140 km (0.11 R)
• M3: 896,839 km (0.11 R)
• M4: 1,543,252 km (0.113 R)
• M5: 1,978,133 km (0.065 R)
• M6: 2,378,307 km (0.081 R)
• M7: 3,052,844 km (0.081 R)
• M8: 3,485,930 km (0.106 R)
• M9: 3,848,854 km (0.118 R)
• M10: 4,492,574 km (0.108 R)
• M11: 5,091,414 km (0.092 R)
• M12: 5,539,609 km (0.105 R)
• M13: 7,281,826 km (0.101 R)
• M14: 7,674,670 km (0.095 R)
• M15: 8,317,043 km (0.098 R)
• M16: 8,637,781 km (0.1 R)
• M17: 9,826,037 km (0.109 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.91 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 763.3

Radius: 13.4

Gravity: 4.25 G

Time & Orbit

Eccentricity (e): 0.137

Orbit Range: 1.65 AU - 2.17 AU

Year: 1704 Days

Day: 14.8 Hours

Environment

Temp: -187 °C

Axial Tilt: 46 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 49,683,639 km

• M1: 166,652 km (0.101 R)
• M2: 744,997 km (0.07 R)
• M3: 1,177,784 km (0.075 R)
• M4: 2,519,527 km (0.092 R)
• M5: 3,579,428 km (0.108 R)
• M6: 4,127,555 km (0.117 R)
• M7: 4,980,712 km (0.1 R)
• M8: 5,924,524 km (0.094 R)
• M9: 6,643,492 km (0.119 R)
• M10: 7,644,451 km (0.098 R)
• M11: 8,681,763 km (0.117 R)
• M12: 9,743,609 km (0.067 R)
• M13: 10,463,324 km (0.04 R)
• M14: 11,108,091 km (0.037 R)
• M15: 11,590,245 km (0.067 R)
• M16: 12,086,311 km (0.112 R)
• M17: 13,203,059 km (0.108 R)

Planet 7 - Gas Giant

Semi-Major Axis: 2.76 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 999.8

Radius: 8.2

Gravity: 14.87 G

Time & Orbit

Eccentricity (e): 0.217

Orbit Range: 2.16 AU - 3.36 AU

Year: 2961 Days

Day: 13 Hours

Environment

Temp: -200 °C

Axial Tilt: 34.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 49,683,639 km

• M1: 104,419 km (0.083 R)
• M2: 379,530 km (0.087 R)
• M3: 688,599 km (0.087 R)
• M4: 1,047,185 km (0.115 R)
• M5: 1,421,629 km (0.067 R)
• M6: 1,711,549 km (0.055 R)
• M7: 2,000,872 km (0.093 R)
• M8: 2,293,635 km (0.086 R)
• M9: 3,036,687 km (0.058 R)
• M10: 3,311,050 km (0.109 R)
• M11: 4,016,703 km (0.056 R)
• M12: 4,303,033 km (0.072 R)
• M13: 4,794,462 km (0.108 R)
• M14: 5,401,530 km (0.103 R)
• M15: 6,058,564 km (0.047 R)
• M16: 7,433,069 km (0.028 R)
• M17: 9,690,651 km (0.11 R)
• M18: 11,081,761 km (0.098 R)
• M19: 11,383,949 km (0.099 R)
• M20: 13,803,994 km (0.039 R)
• M21: 15,292,942 km (0.071 R)
• M22: 15,830,297 km (0.066 R)
• M23: 17,576,403 km (0.106 R)
• M24: 19,572,189 km (0.096 R)
• M25: 24,008,364 km (0.095 R)

Planet 8 - Gas Giant

Semi-Major Axis: 5.94 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 27.2

Radius: 13.2

Gravity: 0.16 G

Time & Orbit

Eccentricity (e): 0.105

Orbit Range: 5.32 AU - 6.56 AU

Year: 9347 Days

Day: 9.6 Hours

Environment

Temp: -225 °C

Axial Tilt: 13.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 49,683,639 km

• M1: 168,447 km (0.104 R)
• M2: 777,610 km (0.08 R)
• M3: 1,402,630 km (0.103 R)
• M4: 1,961,976 km (0.101 R)
• M5: 3,488,922 km (0.111 R)
• M6: 4,412,389 km (0.092 R)
• M7: 5,492,935 km (0.118 R)
• M8: 9,697,832 km (0.048 R)
• M9: 10,634,314 km (0.107 R)
• M10: 12,566,969 km (0.076 R)

Planet 9 - Ice Giant

Semi-Major Axis: 7.7 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 400.8

Radius: 4.5

Gravity: 19.79 G

Time & Orbit

Eccentricity (e): 0.172

Orbit Range: 6.38 AU - 9.02 AU

Year: 13796 Days

Day: 17 Hours

Environment

Temp: -224 °C

Axial Tilt: 35 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (27)

Outer Limit: 49,683,639 km

• M1: 56,997 km (0.116 R)
• M2: 375,341 km (0.104 R)
• M3: 598,990 km (0.086 R)
• M4: 1,330,075 km (0.112 R)
• M5: 2,313,980 km (0.057 R)
• M6: 2,489,159 km (0.101 R)
• M7: 2,736,295 km (0.077 R)
• M8: 3,501,488 km (0.106 R)
• M9: 3,654,526 km (0.083 R)
• M10: 3,974,217 km (0.074 R)
• M11: 5,208,399 km (0.105 R)
• M12: 5,374,603 km (0.109 R)
• M13: 5,966,412 km (0.096 R)
• M14: 7,237,246 km (0.048 R)
• M15: 9,839,501 km (0.118 R)
• M16: 11,940,902 km (0.107 R)
• M17: 13,559,551 km (0.066 R)
• M18: 13,811,175 km (0.1 R)
• M19: 19,362,004 km (0.11 R)
• M20: 22,274,076 km (0.08 R)
• M21: 22,978,532 km (0.098 R)
• M22: 24,617,377 km (0.102 R)
• M23: 30,641,234 km (0.063 R)
• M24: 39,333,918 km (0.118 R)
• M25: 44,376,264 km (0.052 R)
• M26: 47,339,349 km (0.095 R)
• M27: 47,773,182 km (0.093 R)

Kuiper Belt

Range: 30 - 59 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 395 - 19,237 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit