🌌 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: 0.58 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.93

Radius: 1.73

Gravity: 1.31 G

Time & Orbit

Eccentricity (e): 0.235

Orbit Range: 0.44 AU - 0.72 AU

Year: 281 Days

Day: 45.7 Hours

Environment

Temp: -127 °C

Axial Tilt: 23 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.72 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 428.6

Radius: 9.7

Gravity: 4.56 G

Time & Orbit

Eccentricity (e): 0.101

Orbit Range: 0.65 AU - 0.79 AU

Year: 388 Days

Day: 10.1 Hours

Environment

Temp: -132 °C

Axial Tilt: 27.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 56,493,610 km

• M1: 120,875 km (0.102 R)
• M2: 467,344 km (0.075 R)
• M3: 982,559 km (0.082 R)
• M4: 1,510,938 km (0.088 R)
• M5: 2,484,073 km (0.119 R)
• M6: 3,688,336 km (0.114 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.11 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 928.5

Radius: 14.8

Gravity: 4.24 G

Time & Orbit

Eccentricity (e): 0.017

Orbit Range: 1.09 AU - 1.13 AU

Year: 744 Days

Day: 7.8 Hours

Environment

Temp: -162 °C

Axial Tilt: 13.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 56,493,610 km

• M1: 184,005 km (0.104 R)
• M2: 841,338 km (0.089 R)
• M3: 1,375,403 km (0.102 R)
• M4: 1,905,129 km (0.103 R)
• M5: 2,505,465 km (0.097 R)
• M6: 3,338,276 km (0.112 R)
• M7: 3,940,857 km (0.065 R)
• M8: 4,497,959 km (0.116 R)
• M9: 5,180,574 km (0.071 R)
• M10: 5,732,590 km (0.058 R)
• M11: 6,344,745 km (0.06 R)
• M12: 6,955,254 km (0.085 R)
• M13: 7,485,877 km (0.085 R)
• M14: 8,143,510 km (0.113 R)
• M15: 9,352,560 km (0.1 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.73 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 48.6

Radius: 8.9

Gravity: 0.61 G

Time & Orbit

Eccentricity (e): 0.171

Orbit Range: 1.43 AU - 2.03 AU

Year: 1447 Days

Day: 13.3 Hours

Environment

Temp: -174 °C

Axial Tilt: 22.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 56,493,610 km

• M1: 110,702 km (0.073 R)
• M2: 428,448 km (0.093 R)
• M3: 725,699 km (0.093 R)
• M4: 1,172,399 km (0.106 R)
• M5: 1,561,802 km (0.108 R)
• M6: 4,546,728 km (0.082 R)
• M7: 4,895,740 km (0.086 R)
• M8: 5,200,022 km (0.113 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.95 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 518.4

Radius: 9.3

Gravity: 5.99 G

Time & Orbit

Eccentricity (e): 0.088

Orbit Range: 2.69 AU - 3.21 AU

Year: 3222 Days

Day: 8.7 Hours

Environment

Temp: -209 °C

Axial Tilt: 131.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 56,493,610 km

• M1: 115,639 km (0.107 R)
• M2: 683,513 km (0.096 R)
• M3: 1,262,456 km (0.106 R)
• M4: 1,606,382 km (0.068 R)
• M5: 2,728,815 km (0.092 R)
• M6: 4,393,689 km (0.115 R)
• M7: 5,171,150 km (0.087 R)
• M8: 5,983,915 km (0.109 R)
• M9: 6,282,363 km (0.07 R)
• M10: 6,676,403 km (0.063 R)
• M11: 7,359,766 km (0.102 R)
• M12: 9,764,851 km (0.077 R)
• M13: 10,333,174 km (0.102 R)
• M14: 12,170,684 km (0.107 R)
• M15: 12,606,912 km (0.09 R)
• M16: 14,408,519 km (0.1 R)
• M17: 15,958,353 km (0.068 R)
• M18: 18,174,795 km (0.068 R)
• M19: 20,405,299 km (0.098 R)

Planet 6 - Gas Giant

Semi-Major Axis: 4.09 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 93.1

Radius: 10.2

Gravity: 0.89 G

Time & Orbit

Eccentricity (e): 0.083

Orbit Range: 3.75 AU - 4.43 AU

Year: 5259 Days

Day: 14.2 Hours

Environment

Temp: -202 °C

Axial Tilt: 37.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 56,493,610 km

• M1: 127,757 km (0.119 R)
• M2: 775,366 km (0.099 R)
• M3: 2,240,079 km (0.055 R)
• M4: 2,579,965 km (0.08 R)
• M5: 5,360,092 km (0.114 R)
• M6: 7,064,759 km (0.061 R)
• M7: 9,535,069 km (0.111 R)
• M8: 10,330,182 km (0.12 R)
• M9: 10,653,164 km (0.093 R)
• M10: 16,057,087 km (0.101 R)

Planet 7 - Ice Giant

Semi-Major Axis: 7.55 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 883.6

Radius: 4.1

Gravity: 52.56 G

Time & Orbit

Eccentricity (e): 0.055

Orbit Range: 7.13 AU - 7.97 AU

Year: 13190 Days

Day: 23.5 Hours

Environment

Temp: -223 °C

Axial Tilt: 4.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (29)

Outer Limit: 56,493,610 km

• M1: 51,013 km (0.117 R)
• M2: 467,643 km (0.117 R)
• M3: 746,344 km (0.086 R)
• M4: 1,472,193 km (0.077 R)
• M5: 1,744,012 km (0.119 R)
• M6: 2,387,432 km (0.114 R)
• M7: 4,309,765 km (0.056 R)
• M8: 4,696,775 km (0.09 R)
• M9: 5,106,374 km (0.083 R)
• M10: 5,429,056 km (0.048 R)
• M11: 7,338,224 km (0.119 R)
• M12: 10,257,627 km (0.076 R)
• M13: 10,483,520 km (0.118 R)
• M14: 11,300,773 km (0.092 R)
• M15: 14,144,329 km (0.05 R)
• M16: 14,923,285 km (0.102 R)
• M17: 16,488,827 km (0.1 R)
• M18: 21,743,751 km (0.089 R)
• M19: 23,455,600 km (0.112 R)
• M20: 25,563,883 km (0.032 R)
• M21: 28,234,205 km (0.072 R)
• M22: 29,922,566 km (0.096 R)
• M23: 33,006,227 km (0.094 R)
• M24: 40,494,199 km (0.063 R)
• M25: 47,772,734 km (0.09 R)
• M26: 50,001,891 km (0.101 R)
• M27: 54,666,353 km (0.092 R)
• M28: 59,612,358 km (0.118 R)
• M29: 60,525,952 km (0.104 R)

Planet 8 - Ice Giant

Semi-Major Axis: 8.07 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 515.7

Radius: 4

Gravity: 32.23 G

Time & Orbit

Eccentricity (e): 0.015

Orbit Range: 7.95 AU - 8.19 AU

Year: 14576 Days

Day: 15.4 Hours

Environment

Temp: -233 °C

Axial Tilt: 38.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (33)

Outer Limit: 56,493,610 km

• M1: 52,210 km (0.109 R)
• M2: 1,401,582 km (0.078 R)
• M3: 1,734,438 km (0.103 R)
• M4: 1,919,640 km (0.092 R)
• M5: 3,026,963 km (0.063 R)
• M6: 3,423,398 km (0.115 R)
• M7: 6,639,004 km (0.063 R)
• M8: 8,247,181 km (0.106 R)
• M9: 8,435,226 km (0.04 R)
• M10: 10,044,450 km (0.051 R)
• M11: 10,586,593 km (0.116 R)
• M12: 11,147,884 km (0.111 R)
• M13: 13,723,510 km (0.092 R)
• M14: 14,458,185 km (0.09 R)
• M15: 15,501,930 km (0.099 R)
• M16: 16,372,290 km (0.108 R)
• M17: 20,436,116 km (0.045 R)
• M18: 20,694,173 km (0.086 R)
• M19: 21,927,308 km (0.076 R)
• M20: 22,561,752 km (0.086 R)
• M21: 23,489,409 km (0.087 R)
• M22: 24,153,623 km (0.096 R)
• M23: 25,818,797 km (0.077 R)
• M24: 27,768,656 km (0.095 R)
• M25: 29,484,843 km (0.11 R)
• M26: 37,441,804 km (0.091 R)
• M27: 39,933,805 km (0.116 R)
• M28: 40,202,483 km (0.055 R)
• M29: 47,465,160 km (0.095 R)
• M30: 50,067,565 km (0.113 R)
• M31: 50,693,482 km (0.092 R)
• M32: 54,064,970 km (0.103 R)
• M33: 54,889,254 km (0.092 R)

Planet 9 - Ice Giant

Semi-Major Axis: 8.38 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 471.4

Radius: 4

Gravity: 29.46 G

Time & Orbit

Eccentricity (e): 0.114

Orbit Range: 7.42 AU - 9.34 AU

Year: 15424 Days

Day: 19.6 Hours

Environment

Temp: -217 °C

Axial Tilt: 20.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 56,493,610 km

• M1: 54,304 km (0.114 R)
• M2: 221,854 km (0.119 R)
• M3: 395,686 km (0.119 R)
• M4: 618,587 km (0.036 R)
• M5: 745,446 km (0.095 R)
• M6: 1,426,416 km (0.046 R)
• M7: 3,554,894 km (0.111 R)
• M8: 4,413,287 km (0.105 R)
• M9: 6,175,699 km (0.079 R)
• M10: 12,363,965 km (0.118 R)
• M11: 13,051,367 km (0.106 R)
• M12: 15,983,934 km (0.107 R)
• M13: 16,573,948 km (0.104 R)
• M14: 18,112,562 km (0.099 R)
• M15: 25,319,440 km (0.082 R)
• M16: 38,514,720 km (0.031 R)
• M17: 42,865,325 km (0.073 R)
• M18: 49,831,799 km (0.096 R)

Kuiper Belt

Range: 30 - 55 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 522 - 11,650 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit