🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.29 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.58 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.71

Radius: 1.49

Gravity: 1.22 G

Time & Orbit

Eccentricity (e): 0.195

Orbit Range: 0.47 AU - 0.69 AU

Year: 196 Days

Day: 29.5 Hours

Environment

Temp: 21 °C

Axial Tilt: 36.5 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Planet 2 - Terrestrial

Semi-Major Axis: 0.65 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.97

Radius: 1.74

Gravity: 1.31 G

Time & Orbit

Eccentricity (e): 0.212

Orbit Range: 0.51 AU - 0.79 AU

Year: 232 Days

Day: 12.7 Hours

Environment

Temp: 6 °C

Axial Tilt: 35.4 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Planet 3 - Terrestrial

Semi-Major Axis: 0.65 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.75

Radius: 1.25

Gravity: 1.12 G

Time & Orbit

Eccentricity (e): 0.07

Orbit Range: 0.6 AU - 0.7 AU

Year: 232 Days

Day: 30.7 Hours

Environment

Temp: 5 °C

Axial Tilt: 12.9 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Planet 4 - Terrestrial

Semi-Major Axis: 1.36 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.36

Radius: 0.66

Gravity: 0.83 G

Time & Orbit

Eccentricity (e): 0.176

Orbit Range: 1.12 AU - 1.6 AU

Year: 702 Days

Day: 43 Hours

Environment

Temp: -91 °C

Axial Tilt: 33.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 5 - Gas Giant

Semi-Major Axis: 3.08 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 197.6

Radius: 11.1

Gravity: 1.6 G

Time & Orbit

Eccentricity (e): 0.162

Orbit Range: 2.58 AU - 3.58 AU

Year: 2394 Days

Day: 10 Hours

Environment

Temp: -154 °C

Axial Tilt: 68.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 74,385,192 km

• M1: 184,753 km (0.115 R)
• M2: 591,959 km (0.077 R)
• M3: 1,104,631 km (0.062 R)
• M4: 1,576,014 km (0.111 R)
• M5: 2,580,114 km (0.12 R)
• M6: 3,834,792 km (0.098 R)
• M7: 4,588,316 km (0.052 R)
• M8: 5,090,367 km (0.066 R)
• M9: 5,438,032 km (0.089 R)
• M10: 8,822,834 km (0.116 R)
• M11: 9,818,258 km (0.086 R)
• M12: 10,391,816 km (0.104 R)
• M13: 11,191,417 km (0.111 R)
• M14: 12,175,472 km (0.056 R)

Planet 6 - Ice Giant

Semi-Major Axis: 9.5 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 987.4

Radius: 6.9

Gravity: 20.74 G

Time & Orbit

Eccentricity (e): 0.078

Orbit Range: 8.76 AU - 10.24 AU

Year: 12969 Days

Day: 24.4 Hours

Environment

Temp: -190 °C

Axial Tilt: 31.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 74,385,192 km

• M1: 258,505 km (0.118 R)
• M2: 681,418 km (0.093 R)
• M3: 1,590,225 km (0.085 R)
• M4: 2,076,718 km (0.071 R)
• M5: 2,355,119 km (0.103 R)
• M6: 2,866,744 km (0.069 R)
• M7: 3,396,320 km (0.086 R)
• M8: 4,294,805 km (0.088 R)
• M9: 4,987,743 km (0.113 R)
• M10: 5,985,112 km (0.114 R)
• M11: 8,076,191 km (0.115 R)
• M12: 15,710,918 km (0.032 R)
• M13: 18,997,733 km (0.029 R)
• M14: 20,395,874 km (0.067 R)
• M15: 24,390,138 km (0.112 R)
• M16: 26,784,302 km (0.114 R)
• M17: 38,065,777 km (0.094 R)
• M18: 40,139,502 km (0.048 R)
• M19: 43,167,513 km (0.095 R)
• M20: 53,499,490 km (0.048 R)
• M21: 55,222,408 km (0.116 R)
• M22: 59,874,453 km (0.032 R)

Planet 7 - Ice Giant

Semi-Major Axis: 10.22 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 734.4

Radius: 6.5

Gravity: 17.38 G

Time & Orbit

Eccentricity (e): 0.047

Orbit Range: 9.74 AU - 10.7 AU

Year: 14471 Days

Day: 22.1 Hours

Environment

Temp: -196 °C

Axial Tilt: 34.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (27)

Outer Limit: 74,385,192 km

• M1: 80,783 km (0.076 R)
• M2: 464,950 km (0.065 R)
• M3: 686,654 km (0.115 R)
• M4: 1,516,773 km (0.103 R)
• M5: 1,756,429 km (0.102 R)
• M6: 1,966,464 km (0.114 R)
• M7: 2,699,942 km (0.069 R)
• M8: 3,602,616 km (0.065 R)
• M9: 4,464,599 km (0.095 R)
• M10: 5,240,563 km (0.106 R)
• M11: 6,547,450 km (0.114 R)
• M12: 7,683,646 km (0.057 R)
• M13: 7,916,420 km (0.033 R)
• M14: 9,896,647 km (0.116 R)
• M15: 10,453,301 km (0.092 R)
• M16: 18,432,103 km (0.112 R)
• M17: 19,103,498 km (0.081 R)
• M18: 21,124,267 km (0.097 R)
• M19: 25,072,603 km (0.091 R)
• M20: 27,706,722 km (0.069 R)
• M21: 29,486,189 km (0.097 R)
• M22: 32,903,004 km (0.098 R)
• M23: 40,651,426 km (0.055 R)
• M24: 43,090,769 km (0.107 R)
• M25: 44,122,845 km (0.091 R)
• M26: 46,698,172 km (0.089 R)
• M27: 57,824,065 km (0.109 R)

Planet 8 - Ice Giant

Semi-Major Axis: 10.66 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 374.9

Radius: 7.2

Gravity: 7.23 G

Time & Orbit

Eccentricity (e): 0.057

Orbit Range: 10.05 AU - 11.27 AU

Year: 15416 Days

Day: 16.2 Hours

Environment

Temp: -212 °C

Axial Tilt: 43.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (29)

Outer Limit: 74,385,192 km

• M1: 95,294 km (0.081 R)
• M2: 332,855 km (0.109 R)
• M3: 784,940 km (0.108 R)
• M4: 1,039,705 km (0.112 R)
• M5: 1,600,847 km (0.087 R)
• M6: 3,024,121 km (0.106 R)
• M7: 3,585,113 km (0.12 R)
• M8: 4,156,128 km (0.061 R)
• M9: 7,391,631 km (0.068 R)
• M10: 8,043,279 km (0.089 R)
• M11: 8,874,894 km (0.119 R)
• M12: 9,460,420 km (0.07 R)
• M13: 9,813,770 km (0.094 R)
• M14: 10,439,837 km (0.089 R)
• M15: 14,700,534 km (0.052 R)
• M16: 17,174,135 km (0.074 R)
• M17: 17,624,275 km (0.114 R)
• M18: 19,102,152 km (0.098 R)
• M19: 20,999,203 km (0.104 R)
• M20: 22,390,912 km (0.08 R)
• M21: 24,781,635 km (0.12 R)
• M22: 27,236,088 km (0.085 R)
• M23: 27,745,618 km (0.088 R)
• M24: 29,206,441 km (0.111 R)
• M25: 32,622,209 km (0.112 R)
• M26: 36,912,227 km (0.06 R)
• M27: 37,536,350 km (0.07 R)
• M28: 38,040,644 km (0.106 R)
• M29: 45,014,448 km (0.098 R)

Planet 9 - Ice Giant

Semi-Major Axis: 11.55 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 846.9

Radius: 4.5

Gravity: 41.82 G

Time & Orbit

Eccentricity (e): 0.054

Orbit Range: 10.93 AU - 12.17 AU

Year: 17386 Days

Day: 19.2 Hours

Environment

Temp: -212 °C

Axial Tilt: 19.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (37)

Outer Limit: 74,385,192 km

• M1: 67,618 km (0.059 R)
• M2: 226,940 km (0.116 R)
• M3: 421,118 km (0.066 R)
• M4: 869,164 km (0.044 R)
• M5: 1,584,989 km (0.081 R)
• M6: 2,446,224 km (0.1 R)
• M7: 2,751,554 km (0.088 R)
• M8: 3,134,823 km (0.087 R)
• M9: 4,007,129 km (0.108 R)
• M10: 4,431,239 km (0.064 R)
• M11: 6,174,203 km (0.108 R)
• M12: 7,577,731 km (0.111 R)
• M13: 7,723,888 km (0.111 R)
• M14: 8,022,036 km (0.077 R)
• M15: 8,535,755 km (0.093 R)
• M16: 10,689,217 km (0.026 R)
• M17: 12,490,076 km (0.046 R)
• M18: 15,244,173 km (0.094 R)
• M19: 15,477,396 km (0.114 R)
• M20: 19,087,791 km (0.086 R)
• M21: 19,358,862 km (0.078 R)
• M22: 20,752,516 km (0.075 R)
• M23: 22,112,510 km (0.112 R)
• M24: 22,915,701 km (0.09 R)
• M25: 24,156,615 km (0.09 R)
• M26: 27,914,963 km (0.067 R)
• M27: 41,793,008 km (0.072 R)
• M28: 42,864,427 km (0.027 R)
• M29: 44,426,678 km (0.085 R)
• M30: 45,864,762 km (0.06 R)
• M31: 48,833,383 km (0.115 R)
• M32: 50,192,928 km (0.101 R)
• M33: 55,150,153 km (0.111 R)
• M34: 55,699,775 km (0.103 R)
• M35: 59,650,505 km (0.111 R)
• M36: 61,399,454 km (0.084 R)
• M37: 62,982,349 km (0.068 R)

Kuiper Belt

Range: 30 - 56 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 324 - 11,671 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit