🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.26 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.52 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.75

Radius: 1.25

Gravity: 1.12 G

Time & Orbit

Eccentricity (e): 0.01

Orbit Range: 0.51 AU - 0.53 AU

Year: 246 Days

Day: 14.1 Hours

Environment

Temp: -114 °C

Axial Tilt: 50 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.53 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.69

Radius: 1.23

Gravity: 1.12 G

Time & Orbit

Eccentricity (e): 0.21

Orbit Range: 0.42 AU - 0.64 AU

Year: 253 Days

Day: 26.8 Hours

Environment

Temp: -112 °C

Axial Tilt: 2.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 91,241,509 km

• M1: 29,321 km (0.105 R)
• M2: 497,263 km (0.071 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.74 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 422.6

Radius: 11.7

Gravity: 3.09 G

Time & Orbit

Eccentricity (e): 0.091

Orbit Range: 0.67 AU - 0.81 AU

Year: 418 Days

Day: 6.9 Hours

Environment

Temp: -142 °C

Axial Tilt: 1.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 91,241,509 km

• M1: 153,188 km (0.084 R)
• M2: 618,587 km (0.113 R)
• M3: 1,046,886 km (0.12 R)
• M4: 1,780,215 km (0.081 R)
• M5: 3,631,488 km (0.086 R)
• M6: 4,576,498 km (0.11 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.03 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 636.8

Radius: 9.2

Gravity: 7.52 G

Time & Orbit

Eccentricity (e): 0.139

Orbit Range: 1.75 AU - 2.31 AU

Year: 1897 Days

Day: 12.2 Hours

Environment

Temp: -197 °C

Axial Tilt: 6.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 91,241,509 km

• M1: 114,442 km (0.097 R)
• M2: 406,308 km (0.117 R)
• M3: 835,803 km (0.079 R)
• M4: 1,266,645 km (0.115 R)
• M5: 1,767,948 km (0.1 R)
• M6: 2,528,653 km (0.115 R)
• M7: 3,199,749 km (0.08 R)
• M8: 3,509,716 km (0.041 R)
• M9: 5,217,226 km (0.055 R)
• M10: 5,718,827 km (0.105 R)
• M11: 6,428,819 km (0.084 R)
• M12: 6,792,043 km (0.053 R)
• M13: 7,334,634 km (0.047 R)
• M14: 8,112,693 km (0.075 R)
• M15: 8,786,631 km (0.117 R)
• M16: 11,403,846 km (0.082 R)
• M17: 11,783,076 km (0.1 R)
• M18: 14,413,007 km (0.098 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.43 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 797.8

Radius: 12

Gravity: 5.54 G

Time & Orbit

Eccentricity (e): 0.054

Orbit Range: 2.3 AU - 2.56 AU

Year: 2485 Days

Day: 14.9 Hours

Environment

Temp: -190 °C

Axial Tilt: 22.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 91,241,509 km

• M1: 149,299 km (0.088 R)
• M2: 683,363 km (0.091 R)
• M3: 1,857,557 km (0.049 R)
• M4: 2,563,360 km (0.098 R)
• M5: 3,077,976 km (0.101 R)
• M6: 3,910,339 km (0.051 R)
• M7: 4,639,928 km (0.06 R)
• M8: 5,408,861 km (0.102 R)
• M9: 6,877,164 km (0.095 R)
• M10: 7,751,114 km (0.104 R)
• M11: 9,866,578 km (0.053 R)
• M12: 11,177,803 km (0.12 R)
• M13: 11,584,710 km (0.113 R)
• M14: 12,558,292 km (0.118 R)
• M15: 14,002,660 km (0.115 R)
• M16: 14,620,050 km (0.067 R)
• M17: 17,543,791 km (0.104 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.74 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 849

Radius: 14.9

Gravity: 3.82 G

Time & Orbit

Eccentricity (e): 0.239

Orbit Range: 2.85 AU - 4.63 AU

Year: 4745 Days

Day: 9.1 Hours

Environment

Temp: -209 °C

Axial Tilt: 28.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 91,241,509 km

• M1: 191,036 km (0.084 R)
• M2: 654,491 km (0.06 R)
• M3: 1,121,834 km (0.09 R)
• M4: 2,118,904 km (0.09 R)
• M5: 2,643,694 km (0.067 R)
• M6: 3,916,173 km (0.058 R)
• M7: 4,820,791 km (0.056 R)
• M8: 6,197,840 km (0.03 R)
• M9: 7,534,497 km (0.115 R)
• M10: 13,112,104 km (0.104 R)
• M11: 13,585,581 km (0.095 R)
• M12: 15,712,564 km (0.079 R)
• M13: 17,040,993 km (0.065 R)
• M14: 20,267,669 km (0.069 R)
• M15: 26,881,241 km (0.047 R)
• M16: 27,647,182 km (0.092 R)
• M17: 29,851,358 km (0.115 R)

Planet 7 - Gas Giant

Semi-Major Axis: 4.48 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 906.6

Radius: 8.7

Gravity: 11.98 G

Time & Orbit

Eccentricity (e): 0.107

Orbit Range: 4 AU - 4.96 AU

Year: 6221 Days

Day: 12 Hours

Environment

Temp: -215 °C

Axial Tilt: 39.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 91,241,509 km

• M1: 109,506 km (0.045 R)
• M2: 1,776,026 km (0.115 R)
• M3: 2,290,493 km (0.074 R)
• M4: 4,579,789 km (0.048 R)
• M5: 5,737,228 km (0.069 R)
• M6: 6,129,773 km (0.099 R)
• M7: 7,042,170 km (0.12 R)
• M8: 9,534,321 km (0.114 R)
• M9: 10,658,699 km (0.086 R)
• M10: 13,679,828 km (0.115 R)
• M11: 14,322,351 km (0.076 R)
• M12: 16,112,588 km (0.105 R)
• M13: 18,891,070 km (0.081 R)
• M14: 20,280,983 km (0.058 R)
• M15: 23,676,107 km (0.08 R)
• M16: 25,203,501 km (0.076 R)
• M17: 28,641,709 km (0.062 R)
• M18: 32,277,985 km (0.078 R)
• M19: 34,579,997 km (0.043 R)
• M20: 37,892,393 km (0.102 R)

Planet 8 - Ice Giant

Semi-Major Axis: 10.43 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 967.6

Radius: 3.2

Gravity: 94.49 G

Time & Orbit

Eccentricity (e): 0.128

Orbit Range: 9.09 AU - 11.77 AU

Year: 22097 Days

Day: 24.2 Hours

Environment

Temp: -229 °C

Axial Tilt: 14 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (40)

Outer Limit: 91,241,509 km

• M1: 40,691 km (0.074 R)
• M2: 142,417 km (0.066 R)
• M3: 528,529 km (0.055 R)
• M4: 802,742 km (0.037 R)
• M5: 1,149,510 km (0.098 R)
• M6: 1,736,981 km (0.041 R)
• M7: 1,936,544 km (0.074 R)
• M8: 2,502,174 km (0.08 R)
• M9: 3,624,457 km (0.077 R)
• M10: 4,887,811 km (0.099 R)
• M11: 5,083,784 km (0.065 R)
• M12: 5,746,353 km (0.115 R)
• M13: 7,341,665 km (0.095 R)
• M14: 9,150,603 km (0.113 R)
• M15: 10,444,475 km (0.066 R)
• M16: 11,034,489 km (0.053 R)
• M17: 14,966,519 km (0.081 R)
• M18: 16,314,994 km (0.111 R)
• M19: 16,576,641 km (0.055 R)
• M20: 18,111,964 km (0.119 R)
• M21: 19,347,941 km (0.118 R)
• M22: 21,150,745 km (0.111 R)
• M23: 21,881,082 km (0.065 R)
• M24: 22,628,024 km (0.078 R)
• M25: 24,172,622 km (0.074 R)
• M26: 32,681,899 km (0.117 R)
• M27: 35,228,055 km (0.104 R)
• M28: 35,518,873 km (0.112 R)
• M29: 37,903,164 km (0.102 R)
• M30: 38,361,831 km (0.115 R)
• M31: 40,392,023 km (0.118 R)
• M32: 42,822,241 km (0.071 R)
• M33: 58,862,424 km (0.082 R)
• M34: 60,928,520 km (0.038 R)
• M35: 74,588,152 km (0.093 R)
• M36: 80,729,294 km (0.054 R)
• M37: 83,793,059 km (0.072 R)
• M38: 84,570,967 km (0.097 R)
• M39: 88,801,146 km (0.064 R)
• M40: 89,339,699 km (0.106 R)

Kuiper Belt

Range: 30 - 47 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 202 - 16,657 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit