🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.33 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.65 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.66

Radius: 1.68

Gravity: 1.3 G

Time & Orbit

Eccentricity (e): 0.042

Orbit Range: 0.62 AU - 0.68 AU

Year: 338 Days

Day: 31.8 Hours

Environment

Temp: -139 °C

Axial Tilt: 23.5 °

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: 623.5

Radius: 14.1

Gravity: 3.14 G

Time & Orbit

Eccentricity (e): 0.051

Orbit Range: 0.7 AU - 0.78 AU

Year: 411 Days

Day: 13.1 Hours

Environment

Temp: -132 °C

Axial Tilt: 27.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 76,629,678 km

• M1: 175,329 km (0.094 R)
• M2: 915,689 km (0.083 R)
• M3: 1,421,479 km (0.111 R)
• M4: 1,912,310 km (0.051 R)
• M5: 2,399,400 km (0.051 R)
• M6: 2,928,528 km (0.117 R)
• M7: 3,523,778 km (0.102 R)
• M8: 4,080,731 km (0.103 R)
• M9: 4,915,038 km (0.071 R)
• M10: 5,420,828 km (0.064 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.1 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 288.3

Radius: 13.4

Gravity: 1.61 G

Time & Orbit

Eccentricity (e): 0.174

Orbit Range: 0.91 AU - 1.29 AU

Year: 745 Days

Day: 13.5 Hours

Environment

Temp: -164 °C

Axial Tilt: 34.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 76,629,678 km

• M1: 166,652 km (0.1 R)
• M2: 606,021 km (0.118 R)
• M3: 1,027,438 km (0.103 R)
• M4: 1,572,274 km (0.102 R)
• M5: 2,157,201 km (0.072 R)
• M6: 2,737,641 km (0.084 R)
• M7: 3,397,218 km (0.105 R)
• M8: 4,772,172 km (0.108 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.49 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 423.4

Radius: 12.1

Gravity: 2.89 G

Time & Orbit

Eccentricity (e): 0.029

Orbit Range: 2.42 AU - 2.56 AU

Year: 2537 Days

Day: 9.3 Hours

Environment

Temp: -191 °C

Axial Tilt: 32.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 76,629,678 km

• M1: 155,731 km (0.055 R)
• M2: 541,843 km (0.111 R)
• M3: 1,276,070 km (0.112 R)
• M4: 1,833,771 km (0.107 R)
• M5: 2,275,832 km (0.065 R)
• M6: 2,952,164 km (0.111 R)
• M7: 3,582,869 km (0.073 R)
• M8: 4,108,556 km (0.114 R)
• M9: 4,685,555 km (0.118 R)
• M10: 5,807,240 km (0.087 R)
• M11: 7,437,258 km (0.087 R)
• M12: 9,320,396 km (0.106 R)
• M13: 10,248,202 km (0.093 R)
• M14: 11,541,326 km (0.086 R)
• M15: 12,448,488 km (0.114 R)
• M16: 13,963,016 km (0.058 R)
• M17: 14,674,354 km (0.119 R)
• M18: 16,120,966 km (0.045 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.66 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 577.6

Radius: 14.5

Gravity: 2.75 G

Time & Orbit

Eccentricity (e): 0.003

Orbit Range: 2.65 AU - 2.67 AU

Year: 2801 Days

Day: 10.4 Hours

Environment

Temp: -192 °C

Axial Tilt: 20.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 76,629,678 km

• M1: 191,336 km (0.114 R)
• M2: 769,232 km (0.111 R)
• M3: 1,302,249 km (0.071 R)
• M4: 1,761,216 km (0.097 R)
• M5: 2,304,406 km (0.104 R)
• M6: 5,931,107 km (0.087 R)
• M7: 6,600,108 km (0.104 R)
• M8: 7,590,746 km (0.108 R)
• M9: 8,611,452 km (0.05 R)
• M10: 10,731,403 km (0.119 R)
• M11: 12,017,197 km (0.056 R)
• M12: 13,224,302 km (0.04 R)
• M13: 14,558,416 km (0.06 R)
• M14: 17,226,045 km (0.094 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.81 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 861.3

Radius: 15

Gravity: 3.83 G

Time & Orbit

Eccentricity (e): 0.147

Orbit Range: 2.4 AU - 3.22 AU

Year: 3041 Days

Day: 13.6 Hours

Environment

Temp: -198 °C

Axial Tilt: 36.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 76,629,678 km

• M1: 189,840 km (0.066 R)
• M2: 679,922 km (0.066 R)
• M3: 1,260,512 km (0.113 R)
• M4: 2,315,775 km (0.073 R)
• M5: 2,801,968 km (0.105 R)
• M6: 3,450,176 km (0.119 R)
• M7: 4,395,185 km (0.117 R)
• M8: 8,494,018 km (0.028 R)
• M9: 9,031,822 km (0.109 R)
• M10: 9,784,150 km (0.067 R)
• M11: 11,457,551 km (0.106 R)
• M12: 12,705,497 km (0.116 R)
• M13: 13,943,868 km (0.118 R)
• M14: 15,418,454 km (0.099 R)
• M15: 16,549,564 km (0.11 R)
• M16: 17,793,320 km (0.111 R)
• M17: 21,633,797 km (0.074 R)
• M18: 22,913,607 km (0.095 R)

Planet 7 - Gas Giant

Semi-Major Axis: 4.04 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 534.7

Radius: 12.2

Gravity: 3.59 G

Time & Orbit

Eccentricity (e): 0.183

Orbit Range: 3.3 AU - 4.78 AU

Year: 5243 Days

Day: 10 Hours

Environment

Temp: -216 °C

Axial Tilt: 23.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 76,629,678 km

• M1: 151,991 km (0.103 R)
• M2: 536,608 km (0.046 R)
• M3: 1,078,301 km (0.101 R)
• M4: 1,574,218 km (0.07 R)
• M5: 2,312,185 km (0.105 R)
• M6: 2,912,072 km (0.091 R)
• M7: 3,368,196 km (0.115 R)
• M8: 3,784,527 km (0.112 R)
• M9: 4,188,591 km (0.117 R)
• M10: 5,137,939 km (0.098 R)
• M11: 5,721,221 km (0.05 R)
• M12: 6,194,997 km (0.104 R)
• M13: 8,321,082 km (0.115 R)
• M14: 8,852,903 km (0.12 R)
• M15: 11,954,815 km (0.092 R)
• M16: 12,534,506 km (0.12 R)
• M17: 15,209,616 km (0.102 R)
• M18: 17,252,374 km (0.076 R)
• M19: 24,702,797 km (0.092 R)
• M20: 26,527,592 km (0.045 R)
• M21: 27,265,558 km (0.105 R)
• M22: 28,270,706 km (0.034 R)

Planet 8 - Ice Giant

Semi-Major Axis: 10.42 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 593.4

Radius: 5

Gravity: 23.74 G

Time & Orbit

Eccentricity (e): 0.192

Orbit Range: 8.42 AU - 12.42 AU

Year: 21718 Days

Day: 18.5 Hours

Environment

Temp: -229 °C

Axial Tilt: 47.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (31)

Outer Limit: 76,629,678 km

• M1: 62,233 km (0.073 R)
• M2: 325,824 km (0.083 R)
• M3: 899,981 km (0.028 R)
• M4: 1,094,458 km (0.103 R)
• M5: 2,642,347 km (0.071 R)
• M6: 3,045,065 km (0.068 R)
• M7: 3,430,130 km (0.105 R)
• M8: 5,111,011 km (0.07 R)
• M9: 5,775,525 km (0.106 R)
• M10: 9,518,763 km (0.086 R)
• M11: 10,338,858 km (0.073 R)
• M12: 13,010,676 km (0.116 R)
• M13: 15,948,031 km (0.106 R)
• M14: 18,398,743 km (0.083 R)
• M15: 19,574,582 km (0.119 R)
• M16: 22,175,192 km (0.086 R)
• M17: 23,505,715 km (0.1 R)
• M18: 27,235,639 km (0.081 R)
• M19: 31,849,985 km (0.117 R)
• M20: 33,673,434 km (0.117 R)
• M21: 34,746,050 km (0.099 R)
• M22: 40,153,415 km (0.099 R)
• M23: 40,602,807 km (0.102 R)
• M24: 40,904,247 km (0.069 R)
• M25: 41,511,464 km (0.063 R)
• M26: 49,617,724 km (0.092 R)
• M27: 51,885,777 km (0.101 R)
• M28: 52,597,415 km (0.118 R)
• M29: 64,473,242 km (0.032 R)
• M30: 68,228,447 km (0.112 R)
• M31: 69,296,875 km (0.062 R)

Kuiper Belt

Range: 30 - 46 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 452 - 12,817 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit