🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.32 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.63 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.13

Radius: 0.44

Gravity: 0.67 G

Time & Orbit

Eccentricity (e): 0.001

Orbit Range: 0.63 AU - 0.63 AU

Year: 328 Days

Day: 41.9 Hours

Environment

Temp: -136 °C

Axial Tilt: 38.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.91 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 158.4

Radius: 9.8

Gravity: 1.65 G

Time & Orbit

Eccentricity (e): 0.095

Orbit Range: 0.82 AU - 1 AU

Year: 569 Days

Day: 6.2 Hours

Environment

Temp: -150 °C

Axial Tilt: 109.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 74,648,799 km

• M1: 127,607 km (0.117 R)
• M2: 523,293 km (0.093 R)
• M3: 849,417 km (0.055 R)
• M4: 1,215,931 km (0.111 R)
• M5: 1,549,086 km (0.111 R)
• M6: 2,092,276 km (0.075 R)
• M7: 3,218,000 km (0.045 R)
• M8: 3,985,138 km (0.119 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.17 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 701.4

Radius: 9

Gravity: 8.66 G

Time & Orbit

Eccentricity (e): 0.112

Orbit Range: 1.04 AU - 1.3 AU

Year: 830 Days

Day: 11 Hours

Environment

Temp: -170 °C

Axial Tilt: 28.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 74,648,799 km

• M1: 111,899 km (0.105 R)
• M2: 398,529 km (0.071 R)
• M3: 742,454 km (0.099 R)
• M4: 1,091,466 km (0.1 R)
• M5: 1,441,226 km (0.095 R)
• M6: 1,838,558 km (0.114 R)
• M7: 2,204,025 km (0.105 R)
• M8: 2,515,189 km (0.104 R)
• M9: 3,005,720 km (0.083 R)
• M10: 3,321,522 km (0.059 R)
• M11: 3,630,591 km (0.108 R)
• M12: 4,036,300 km (0.116 R)
• M13: 4,572,908 km (0.072 R)
• M14: 5,137,939 km (0.088 R)
• M15: 6,113,317 km (0.06 R)
• M16: 6,493,146 km (0.104 R)
• M17: 7,923,451 km (0.063 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.78 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 33.7

Radius: 10.5

Gravity: 0.31 G

Time & Orbit

Eccentricity (e): 0.072

Orbit Range: 2.58 AU - 2.98 AU

Year: 3041 Days

Day: 9.5 Hours

Environment

Temp: -194 °C

Axial Tilt: 17.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 74,648,799 km

• M1: 135,685 km (0.073 R)
• M2: 477,068 km (0.113 R)
• M3: 946,805 km (0.045 R)
• M4: 1,817,913 km (0.092 R)
• M5: 4,437,522 km (0.06 R)
• M6: 5,417,687 km (0.083 R)
• M7: 6,413,710 km (0.074 R)
• M8: 7,618,571 km (0.116 R)

Planet 5 - Gas Giant

Semi-Major Axis: 3.46 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 812.9

Radius: 9.9

Gravity: 8.29 G

Time & Orbit

Eccentricity (e): 0.14

Orbit Range: 2.98 AU - 3.94 AU

Year: 4222 Days

Day: 6.9 Hours

Environment

Temp: -214 °C

Axial Tilt: 20.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (25)

Outer Limit: 74,648,799 km

• M1: 123,119 km (0.077 R)
• M2: 628,760 km (0.113 R)
• M3: 978,520 km (0.078 R)
• M4: 1,311,225 km (0.076 R)
• M5: 1,671,307 km (0.117 R)
• M6: 1,998,179 km (0.036 R)
• M7: 2,855,075 km (0.083 R)
• M8: 4,167,946 km (0.087 R)
• M9: 5,037,260 km (0.111 R)
• M10: 5,816,365 km (0.084 R)
• M11: 7,404,496 km (0.101 R)
• M12: 9,183,514 km (0.088 R)
• M13: 9,710,847 km (0.084 R)
• M14: 10,870,529 km (0.093 R)
• M15: 12,904,462 km (0.055 R)
• M16: 15,013,044 km (0.097 R)
• M17: 15,574,186 km (0.103 R)
• M18: 17,159,325 km (0.046 R)
• M19: 20,992,471 km (0.072 R)
• M20: 21,623,325 km (0.059 R)
• M21: 21,979,368 km (0.111 R)
• M22: 22,411,706 km (0.048 R)
• M23: 23,969,618 km (0.048 R)
• M24: 24,427,687 km (0.102 R)
• M25: 27,548,897 km (0.119 R)

Planet 6 - Ice Giant

Semi-Major Axis: 8.29 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 48.7

Radius: 4.2

Gravity: 2.76 G

Time & Orbit

Eccentricity (e): 0.048

Orbit Range: 7.89 AU - 8.69 AU

Year: 15658 Days

Day: 23.9 Hours

Environment

Temp: -230 °C

Axial Tilt: 18.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 74,648,799 km

• M1: 52,210 km (0.1 R)
• M2: 195,524 km (0.107 R)
• M3: 385,963 km (0.097 R)
• M4: 2,147,477 km (0.057 R)
• M5: 3,273,800 km (0.116 R)
• M6: 4,030,765 km (0.107 R)
• M7: 4,620,779 km (0.103 R)
• M8: 4,897,834 km (0.106 R)
• M9: 6,830,190 km (0.096 R)
• M10: 7,189,823 km (0.094 R)
• M11: 11,829,601 km (0.104 R)
• M12: 13,632,256 km (0.083 R)
• M13: 15,332,286 km (0.058 R)
• M14: 16,872,545 km (0.067 R)
• M15: 20,793,655 km (0.071 R)
• M16: 21,756,168 km (0.106 R)
• M17: 23,181,985 km (0.114 R)

Planet 7 - Ice Giant

Semi-Major Axis: 8.56 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 761.9

Radius: 4.1

Gravity: 45.32 G

Time & Orbit

Eccentricity (e): 0.062

Orbit Range: 8.03 AU - 9.09 AU

Year: 16429 Days

Day: 22 Hours

Environment

Temp: -233 °C

Axial Tilt: 38.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (42)

Outer Limit: 74,648,799 km

• M1: 104,868 km (0.114 R)
• M2: 284,236 km (0.034 R)
• M3: 718,668 km (0.086 R)
• M4: 1,519,615 km (0.036 R)
• M5: 2,695,604 km (0.043 R)
• M6: 3,410,981 km (0.093 R)
• M7: 3,753,411 km (0.113 R)
• M8: 4,149,845 km (0.096 R)
• M9: 4,743,898 km (0.083 R)
• M10: 5,857,056 km (0.069 R)
• M11: 6,516,932 km (0.079 R)
• M12: 6,820,616 km (0.119 R)
• M13: 7,409,583 km (0.101 R)
• M14: 7,550,205 km (0.115 R)
• M15: 7,788,514 km (0.11 R)
• M16: 7,982,842 km (0.109 R)
• M17: 8,688,196 km (0.118 R)
• M18: 9,216,874 km (0.059 R)
• M19: 13,324,682 km (0.096 R)
• M20: 14,753,342 km (0.105 R)
• M21: 15,581,067 km (0.086 R)
• M22: 17,083,030 km (0.117 R)
• M23: 17,576,553 km (0.101 R)
• M24: 18,592,323 km (0.094 R)
• M25: 19,826,056 km (0.106 R)
• M26: 23,751,355 km (0.112 R)
• M27: 26,382,482 km (0.104 R)
• M28: 30,144,270 km (0.084 R)
• M29: 34,769,687 km (0.1 R)
• M30: 37,594,244 km (0.116 R)
• M31: 44,771,950 km (0.112 R)
• M32: 47,622,238 km (0.073 R)
• M33: 51,949,357 km (0.083 R)
• M34: 53,506,222 km (0.081 R)
• M35: 57,259,333 km (0.046 R)
• M36: 57,993,559 km (0.107 R)
• M37: 59,106,568 km (0.104 R)
• M38: 59,480,712 km (0.054 R)
• M39: 64,687,615 km (0.079 R)
• M40: 65,284,212 km (0.091 R)
• M41: 68,528,391 km (0.102 R)
• M42: 68,941,431 km (0.059 R)

Planet 8 - Ice Giant

Semi-Major Axis: 8.93 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 123.8

Radius: 3.9

Gravity: 8.14 G

Time & Orbit

Eccentricity (e): 0.208

Orbit Range: 7.07 AU - 10.79 AU

Year: 17506 Days

Day: 17.9 Hours

Environment

Temp: -230 °C

Axial Tilt: 33 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 74,648,799 km

• M1: 63,729 km (0.078 R)
• M2: 248,632 km (0.104 R)
• M3: 372,499 km (0.091 R)
• M4: 641,027 km (0.077 R)
• M5: 6,102,696 km (0.116 R)
• M6: 6,343,099 km (0.12 R)
• M7: 7,102,009 km (0.065 R)
• M8: 7,406,441 km (0.109 R)
• M9: 7,879,320 km (0.11 R)
• M10: 11,198,149 km (0.11 R)
• M11: 11,506,470 km (0.03 R)
• M12: 12,193,722 km (0.101 R)
• M13: 25,848,866 km (0.089 R)
• M14: 27,115,960 km (0.063 R)
• M15: 33,756,760 km (0.058 R)
• M16: 38,196,525 km (0.108 R)

Planet 9 - Ice Giant

Semi-Major Axis: 9.87 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 625.3

Radius: 4

Gravity: 39.08 G

Time & Orbit

Eccentricity (e): 0.207

Orbit Range: 7.83 AU - 11.91 AU

Year: 20342 Days

Day: 16.6 Hours

Environment

Temp: -231 °C

Axial Tilt: 21.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (28)

Outer Limit: 74,648,799 km

• M1: 61,485 km (0.098 R)
• M2: 514,467 km (0.113 R)
• M3: 1,376,151 km (0.048 R)
• M4: 1,831,826 km (0.095 R)
• M5: 2,166,327 km (0.12 R)
• M6: 3,331,096 km (0.113 R)
• M7: 4,143,113 km (0.11 R)
• M8: 6,232,696 km (0.073 R)
• M9: 6,757,336 km (0.06 R)
• M10: 7,647,443 km (0.05 R)
• M11: 12,461,203 km (0.115 R)
• M12: 13,010,676 km (0.088 R)
• M13: 13,937,734 km (0.108 R)
• M14: 15,763,726 km (0.08 R)
• M15: 18,970,805 km (0.114 R)
• M16: 22,687,863 km (0.113 R)
• M17: 23,094,620 km (0.067 R)
• M18: 26,749,595 km (0.096 R)
• M19: 29,791,518 km (0.109 R)
• M20: 32,410,678 km (0.079 R)
• M21: 37,674,429 km (0.06 R)
• M22: 43,792,832 km (0.1 R)
• M23: 44,899,557 km (0.08 R)
• M24: 50,713,828 km (0.05 R)
• M25: 57,761,084 km (0.101 R)
• M26: 59,475,177 km (0.103 R)
• M27: 62,804,926 km (0.113 R)
• M28: 66,463,641 km (0.096 R)

Kuiper Belt

Range: 30 - 49 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 475 - 17,104 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit