🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.29 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.58 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.08

Radius: 1.03

Gravity: 1.02 G

Time & Orbit

Eccentricity (e): 0.206

Orbit Range: 0.46 AU - 0.7 AU

Year: 290 Days

Day: 40.1 Hours

Environment

Temp: -118 °C

Axial Tilt: 17.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.62 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.96

Radius: 1.9

Gravity: 1.37 G

Time & Orbit

Eccentricity (e): 0.084

Orbit Range: 0.57 AU - 0.67 AU

Year: 320 Days

Day: 18.8 Hours

Environment

Temp: -133 °C

Axial Tilt: 28.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Terrestrial

Semi-Major Axis: 0.64 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.57

Radius: 1.46

Gravity: 1.21 G

Time & Orbit

Eccentricity (e): 0.229

Orbit Range: 0.49 AU - 0.79 AU

Year: 336 Days

Day: 21 Hours

Environment

Temp: -130 °C

Axial Tilt: 38.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 54,140,296 km

• M1: 489,335 km (0.045 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.87 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 58

Radius: 11.2

Gravity: 0.46 G

Time & Orbit

Eccentricity (e): 0.032

Orbit Range: 0.84 AU - 0.9 AU

Year: 532 Days

Day: 5.4 Hours

Environment

Temp: -161 °C

Axial Tilt: 3.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (5)

Outer Limit: 54,140,296 km

• M1: 143,764 km (0.053 R)
• M2: 1,096,552 km (0.086 R)
• M3: 1,864,588 km (0.089 R)
• M4: 2,264,762 km (0.11 R)
• M5: 2,902,647 km (0.101 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.12 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 711.5

Radius: 11

Gravity: 5.88 G

Time & Orbit

Eccentricity (e): 0.144

Orbit Range: 0.96 AU - 1.28 AU

Year: 778 Days

Day: 7.3 Hours

Environment

Temp: -165 °C

Axial Tilt: 122.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 54,140,296 km

• M1: 137,630 km (0.116 R)
• M2: 546,481 km (0.056 R)
• M3: 1,099,694 km (0.049 R)
• M4: 1,515,426 km (0.059 R)
• M5: 1,879,847 km (0.062 R)
• M6: 2,387,283 km (0.062 R)
• M7: 2,778,930 km (0.047 R)
• M8: 3,226,676 km (0.068 R)
• M9: 4,019,396 km (0.11 R)
• M10: 4,544,634 km (0.084 R)
• M11: 5,540,507 km (0.112 R)
• M12: 6,110,624 km (0.063 R)
• M13: 7,299,329 km (0.083 R)
• M14: 7,767,869 km (0.056 R)
• M15: 8,584,823 km (0.072 R)

Planet 6 - Gas Giant

Semi-Major Axis: 1.93 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 853.5

Radius: 11.8

Gravity: 6.13 G

Time & Orbit

Eccentricity (e): 0.131

Orbit Range: 1.68 AU - 2.18 AU

Year: 1759 Days

Day: 6.6 Hours

Environment

Temp: -183 °C

Axial Tilt: 38.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 54,140,296 km

• M1: 146,756 km (0.111 R)
• M2: 952,938 km (0.083 R)
• M3: 1,560,605 km (0.104 R)
• M4: 2,140,446 km (0.1 R)
• M5: 3,526,620 km (0.091 R)
• M6: 4,472,378 km (0.072 R)
• M7: 5,303,993 km (0.05 R)
• M8: 5,938,138 km (0.044 R)
• M9: 6,754,643 km (0.063 R)
• M10: 7,586,706 km (0.104 R)
• M11: 8,027,721 km (0.12 R)
• M12: 10,603,647 km (0.114 R)
• M13: 11,306,308 km (0.095 R)
• M14: 11,921,903 km (0.068 R)
• M15: 13,773,626 km (0.043 R)
• M16: 15,110,133 km (0.05 R)
• M17: 15,480,836 km (0.114 R)
• M18: 15,904,946 km (0.113 R)

Planet 7 - Gas Giant

Semi-Major Axis: 2.04 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 231.5

Radius: 9.8

Gravity: 2.41 G

Time & Orbit

Eccentricity (e): 0.14

Orbit Range: 1.75 AU - 2.33 AU

Year: 1911 Days

Day: 7.7 Hours

Environment

Temp: -189 °C

Axial Tilt: 25.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 54,140,296 km

• M1: 122,221 km (0.039 R)
• M2: 464,352 km (0.115 R)
• M3: 786,885 km (0.082 R)
• M4: 1,100,442 km (0.086 R)
• M5: 1,866,383 km (0.08 R)
• M6: 2,464,924 km (0.06 R)
• M7: 2,784,016 km (0.05 R)
• M8: 3,659,014 km (0.076 R)
• M9: 4,314,552 km (0.042 R)
• M10: 5,222,162 km (0.115 R)
• M11: 5,565,190 km (0.038 R)
• M12: 5,901,786 km (0.081 R)
• M13: 6,523,664 km (0.078 R)
• M14: 9,222,410 km (0.103 R)
• M15: 9,575,461 km (0.03 R)
• M16: 10,121,942 km (0.088 R)
• M17: 10,561,161 km (0.084 R)

Planet 8 - Gas Giant

Semi-Major Axis: 3 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 477.7

Radius: 12.7

Gravity: 2.96 G

Time & Orbit

Eccentricity (e): 0.179

Orbit Range: 2.46 AU - 3.54 AU

Year: 3409 Days

Day: 10.3 Hours

Environment

Temp: -193 °C

Axial Tilt: 33.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 54,140,296 km

• M1: 224,696 km (0.092 R)
• M2: 1,360,293 km (0.114 R)
• M3: 1,996,384 km (0.105 R)
• M4: 2,953,212 km (0.093 R)
• M5: 3,471,718 km (0.098 R)
• M6: 4,428,546 km (0.112 R)
• M7: 5,231,737 km (0.108 R)
• M8: 8,364,466 km (0.059 R)
• M9: 8,772,569 km (0.116 R)
• M10: 12,621,423 km (0.113 R)
• M11: 14,620,200 km (0.111 R)
• M12: 15,063,907 km (0.112 R)
• M13: 17,806,186 km (0.067 R)
• M14: 18,597,858 km (0.092 R)
• M15: 19,413,016 km (0.091 R)

Planet 9 - Ice Giant

Semi-Major Axis: 7.17 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 782.6

Radius: 6.9

Gravity: 16.44 G

Time & Orbit

Eccentricity (e): 0.076

Orbit Range: 6.63 AU - 7.71 AU

Year: 12595 Days

Day: 19.9 Hours

Environment

Temp: -214 °C

Axial Tilt: 48.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (31)

Outer Limit: 54,140,296 km

• M1: 86,468 km (0.104 R)
• M2: 382,671 km (0.107 R)
• M3: 657,632 km (0.091 R)
• M4: 902,674 km (0.118 R)
• M5: 2,279,722 km (0.111 R)
• M6: 3,163,097 km (0.111 R)
• M7: 3,415,918 km (0.06 R)
• M8: 4,137,129 km (0.106 R)
• M9: 4,628,857 km (0.086 R)
• M10: 6,067,241 km (0.109 R)
• M11: 6,701,985 km (0.086 R)
• M12: 7,035,438 km (0.083 R)
• M13: 7,872,139 km (0.119 R)
• M14: 9,325,632 km (0.088 R)
• M15: 10,169,813 km (0.059 R)
• M16: 11,948,980 km (0.103 R)
• M17: 14,400,889 km (0.08 R)
• M18: 14,956,795 km (0.119 R)
• M19: 15,311,342 km (0.119 R)
• M20: 16,037,490 km (0.061 R)
• M21: 16,862,373 km (0.062 R)
• M22: 20,620,271 km (0.06 R)
• M23: 25,199,612 km (0.096 R)
• M24: 26,313,368 km (0.096 R)
• M25: 38,247,688 km (0.055 R)
• M26: 40,260,527 km (0.057 R)
• M27: 41,501,441 km (0.087 R)
• M28: 46,420,219 km (0.065 R)
• M29: 48,708,468 km (0.094 R)
• M30: 49,331,244 km (0.082 R)
• M31: 53,508,765 km (0.116 R)

Planet 10 - Ice Giant

Semi-Major Axis: 7.33 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 582.4

Radius: 3.1

Gravity: 60.6 G

Time & Orbit

Eccentricity (e): 0.144

Orbit Range: 6.27 AU - 8.39 AU

Year: 13019 Days

Day: 22.9 Hours

Environment

Temp: -221 °C

Axial Tilt: 5.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 54,140,296 km

• M1: 38,596 km (0.111 R)
• M2: 160,219 km (0.03 R)
• M3: 260,151 km (0.118 R)
• M4: 795,861 km (0.102 R)
• M5: 1,499,270 km (0.103 R)
• M6: 2,868,838 km (0.108 R)
• M7: 7,089,293 km (0.113 R)
• M8: 9,693,194 km (0.111 R)
• M9: 10,005,106 km (0.098 R)
• M10: 12,198,210 km (0.066 R)
• M11: 16,529,966 km (0.086 R)
• M12: 19,897,265 km (0.039 R)
• M13: 21,258,456 km (0.12 R)
• M14: 25,417,576 km (0.102 R)
• M15: 29,434,129 km (0.113 R)
• M16: 31,085,241 km (0.112 R)
• M17: 33,616,886 km (0.071 R)
• M18: 44,545,758 km (0.069 R)
• M19: 49,415,767 km (0.119 R)
• M20: 50,183,204 km (0.086 R)

Kuiper Belt

Range: 30 - 60 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 201 - 12,996 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit