🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.3 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.6 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.35

Radius: 1.62

Gravity: 1.28 G

Time & Orbit

Eccentricity (e): 0.12

Orbit Range: 0.53 AU - 0.67 AU

Year: 300 Days

Day: 43.2 Hours

Environment

Temp: -133 °C

Axial Tilt: 37.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.65 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.85

Radius: 0.94

Gravity: 0.96 G

Time & Orbit

Eccentricity (e): 0.072

Orbit Range: 0.6 AU - 0.7 AU

Year: 338 Days

Day: 19.3 Hours

Environment

Temp: -141 °C

Axial Tilt: 6.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 1.04 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 71.4

Radius: 14.4

Gravity: 0.34 G

Time & Orbit

Eccentricity (e): 0.17

Orbit Range: 0.86 AU - 1.22 AU

Year: 685 Days

Day: 7.9 Hours

Environment

Temp: -163 °C

Axial Tilt: 6.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (4)

Outer Limit: 62,526,434 km

• M1: 192,233 km (0.071 R)
• M2: 1,370,915 km (0.072 R)
• M3: 2,318,468 km (0.035 R)
• M4: 3,243,431 km (0.11 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.86 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 220.2

Radius: 12.5

Gravity: 1.41 G

Time & Orbit

Eccentricity (e): 0.096

Orbit Range: 1.68 AU - 2.04 AU

Year: 1638 Days

Day: 10.2 Hours

Environment

Temp: -180 °C

Axial Tilt: 11.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 62,526,434 km

• M1: 155,432 km (0.115 R)
• M2: 545,883 km (0.11 R)
• M3: 1,153,400 km (0.103 R)
• M4: 1,645,128 km (0.074 R)
• M5: 2,265,959 km (0.095 R)
• M6: 3,361,165 km (0.088 R)
• M7: 3,949,833 km (0.095 R)
• M8: 5,258,664 km (0.084 R)
• M9: 5,727,055 km (0.091 R)
• M10: 6,180,786 km (0.095 R)
• M11: 7,493,657 km (0.081 R)
• M12: 8,088,458 km (0.085 R)
• M13: 8,875,941 km (0.07 R)
• M14: 9,428,855 km (0.077 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.92 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 111.8

Radius: 9.6

Gravity: 1.21 G

Time & Orbit

Eccentricity (e): 0.118

Orbit Range: 1.69 AU - 2.15 AU

Year: 1718 Days

Day: 12.5 Hours

Environment

Temp: -182 °C

Axial Tilt: 122.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 62,526,434 km

• M1: 120,875 km (0.103 R)
• M2: 441,164 km (0.087 R)
• M3: 1,253,780 km (0.066 R)
• M4: 1,707,809 km (0.118 R)
• M5: 2,486,017 km (0.118 R)
• M6: 2,843,108 km (0.074 R)
• M7: 3,324,962 km (0.103 R)
• M8: 3,634,181 km (0.091 R)
• M9: 4,233,470 km (0.072 R)
• M10: 4,914,140 km (0.105 R)
• M11: 6,329,636 km (0.082 R)

Planet 6 - Gas Giant

Semi-Major Axis: 4.38 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 383.7

Radius: 14.5

Gravity: 1.82 G

Time & Orbit

Eccentricity (e): 0.047

Orbit Range: 4.17 AU - 4.59 AU

Year: 5919 Days

Day: 14.6 Hours

Environment

Temp: -215 °C

Axial Tilt: 23.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 62,526,434 km

• M1: 182,809 km (0.103 R)
• M2: 965,505 km (0.114 R)
• M3: 1,847,235 km (0.044 R)
• M4: 2,411,368 km (0.087 R)
• M5: 2,873,925 km (0.032 R)
• M6: 4,734,473 km (0.055 R)
• M7: 5,720,623 km (0.085 R)
• M8: 6,743,872 km (0.109 R)
• M9: 7,640,711 km (0.086 R)
• M10: 8,245,386 km (0.082 R)
• M11: 9,350,615 km (0.106 R)
• M12: 10,043,253 km (0.115 R)
• M13: 10,990,058 km (0.11 R)
• M14: 12,863,472 km (0.091 R)
• M15: 14,778,474 km (0.06 R)
• M16: 16,523,982 km (0.099 R)
• M17: 19,623,650 km (0.094 R)
• M18: 20,153,227 km (0.045 R)
• M19: 23,238,982 km (0.038 R)
• M20: 23,906,937 km (0.065 R)

Planet 7 - Gas Giant

Semi-Major Axis: 5.09 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 899

Radius: 8.6

Gravity: 12.16 G

Time & Orbit

Eccentricity (e): 0.156

Orbit Range: 4.3 AU - 5.88 AU

Year: 7415 Days

Day: 5.5 Hours

Environment

Temp: -218 °C

Axial Tilt: 22 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (28)

Outer Limit: 62,526,434 km

• M1: 106,962 km (0.116 R)
• M2: 405,709 km (0.099 R)
• M3: 677,828 km (0.083 R)
• M4: 1,207,853 km (0.075 R)
• M5: 1,485,956 km (0.101 R)
• M6: 1,777,671 km (0.113 R)
• M7: 2,261,621 km (0.075 R)
• M8: 2,790,299 km (0.118 R)
• M9: 3,106,101 km (0.106 R)
• M10: 3,835,241 km (0.104 R)
• M11: 5,152,300 km (0.09 R)
• M12: 5,662,878 km (0.078 R)
• M13: 6,102,097 km (0.064 R)
• M14: 7,438,305 km (0.051 R)
• M15: 9,698,131 km (0.111 R)
• M16: 12,048,014 km (0.114 R)
• M17: 13,237,467 km (0.068 R)
• M18: 14,133,857 km (0.076 R)
• M19: 14,503,514 km (0.084 R)
• M20: 16,247,376 km (0.094 R)
• M21: 20,301,777 km (0.111 R)
• M22: 23,237,037 km (0.089 R)
• M23: 23,665,785 km (0.112 R)
• M24: 24,539,287 km (0.059 R)
• M25: 30,034,615 km (0.118 R)
• M26: 30,441,372 km (0.095 R)
• M27: 39,977,488 km (0.108 R)
• M28: 42,606,820 km (0.089 R)

Planet 8 - Ice Giant

Semi-Major Axis: 7.94 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 728.6

Radius: 7.8

Gravity: 11.98 G

Time & Orbit

Eccentricity (e): 0.095

Orbit Range: 7.19 AU - 8.69 AU

Year: 14446 Days

Day: 16.2 Hours

Environment

Temp: -216 °C

Axial Tilt: 27.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (38)

Outer Limit: 62,526,434 km

• M1: 98,884 km (0.063 R)
• M2: 431,590 km (0.083 R)
• M3: 743,801 km (0.059 R)
• M4: 1,181,674 km (0.054 R)
• M5: 2,200,734 km (0.062 R)
• M6: 2,550,793 km (0.098 R)
• M7: 3,107,896 km (0.079 R)
• M8: 4,244,241 km (0.046 R)
• M9: 6,703,481 km (0.063 R)
• M10: 7,087,798 km (0.074 R)
• M11: 8,184,948 km (0.104 R)
• M12: 9,710,547 km (0.081 R)
• M13: 11,842,018 km (0.103 R)
• M14: 12,788,673 km (0.114 R)
• M15: 13,649,310 km (0.092 R)
• M16: 14,059,208 km (0.117 R)
• M17: 14,337,161 km (0.089 R)
• M18: 16,006,523 km (0.054 R)
• M19: 16,462,498 km (0.099 R)
• M20: 17,162,616 km (0.073 R)
• M21: 17,882,481 km (0.069 R)
• M22: 18,291,032 km (0.107 R)
• M23: 19,900,556 km (0.117 R)
• M24: 20,964,346 km (0.104 R)
• M25: 21,327,271 km (0.091 R)
• M26: 23,986,074 km (0.056 R)
• M27: 27,071,530 km (0.116 R)
• M28: 32,542,773 km (0.078 R)
• M29: 35,279,666 km (0.059 R)
• M30: 38,166,456 km (0.069 R)
• M31: 38,980,268 km (0.112 R)
• M32: 42,495,968 km (0.067 R)
• M33: 43,664,327 km (0.094 R)
• M34: 45,759,894 km (0.087 R)
• M35: 48,868,688 km (0.064 R)
• M36: 59,035,209 km (0.091 R)
• M37: 59,577,502 km (0.108 R)
• M38: 61,224,574 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: 170 - 16,044 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit