🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.27 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.53 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.46

Radius: 1.82

Gravity: 1.35 G

Time & Orbit

Eccentricity (e): 0.053

Orbit Range: 0.5 AU - 0.56 AU

Year: 249 Days

Day: 25.7 Hours

Environment

Temp: -124 °C

Axial Tilt: 34 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.63 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.03

Radius: 1.75

Gravity: 1.32 G

Time & Orbit

Eccentricity (e): 0.242

Orbit Range: 0.48 AU - 0.78 AU

Year: 323 Days

Day: 13 Hours

Environment

Temp: -125 °C

Axial Tilt: 0.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.86 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 801.7

Radius: 13.9

Gravity: 4.15 G

Time & Orbit

Eccentricity (e): 0.105

Orbit Range: 0.77 AU - 0.95 AU

Year: 515 Days

Day: 6.5 Hours

Environment

Temp: -153 °C

Axial Tilt: 12.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 89,243,304 km

• M1: 173,085 km (0.09 R)
• M2: 674,387 km (0.085 R)
• M3: 1,205,310 km (0.107 R)
• M4: 1,735,934 km (0.072 R)
• M5: 2,432,461 km (0.043 R)
• M6: 3,273,800 km (0.055 R)
• M7: 3,729,924 km (0.11 R)
• M8: 4,316,347 km (0.096 R)
• M9: 4,883,323 km (0.109 R)
• M10: 5,430,852 km (0.101 R)
• M11: 6,168,070 km (0.073 R)

Planet 4 - Gas Giant

Semi-Major Axis: 0.97 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 722.9

Radius: 8.1

Gravity: 11.02 G

Time & Orbit

Eccentricity (e): 0.018

Orbit Range: 0.95 AU - 0.99 AU

Year: 617 Days

Day: 14.2 Hours

Environment

Temp: -158 °C

Axial Tilt: 48 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 89,243,304 km

• M1: 100,679 km (0.112 R)
• M2: 368,460 km (0.037 R)
• M3: 1,080,545 km (0.079 R)
• M4: 1,338,003 km (0.094 R)
• M5: 1,740,870 km (0.117 R)
• M6: 2,071,482 km (0.045 R)
• M7: 3,209,323 km (0.055 R)
• M8: 3,600,222 km (0.071 R)
• M9: 3,949,833 km (0.114 R)
• M10: 5,102,634 km (0.111 R)
• M11: 5,654,650 km (0.101 R)
• M12: 6,285,355 km (0.075 R)
• M13: 6,669,372 km (0.079 R)
• M14: 7,307,258 km (0.072 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.44 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 952.9

Radius: 10.6

Gravity: 8.48 G

Time & Orbit

Eccentricity (e): 0.163

Orbit Range: 1.21 AU - 1.67 AU

Year: 1116 Days

Day: 8 Hours

Environment

Temp: -174 °C

Axial Tilt: 42.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 89,243,304 km

• M1: 134,339 km (0.059 R)
• M2: 690,095 km (0.038 R)
• M3: 1,169,855 km (0.069 R)
• M4: 1,968,858 km (0.101 R)
• M5: 2,638,906 km (0.071 R)
• M6: 2,971,911 km (0.093 R)
• M7: 3,408,737 km (0.108 R)
• M8: 3,888,497 km (0.113 R)
• M9: 4,579,041 km (0.094 R)
• M10: 5,266,593 km (0.093 R)
• M11: 6,822,710 km (0.051 R)
• M12: 7,223,483 km (0.047 R)
• M13: 8,694,030 km (0.036 R)
• M14: 9,561,698 km (0.037 R)
• M15: 9,968,903 km (0.095 R)
• M16: 11,054,834 km (0.086 R)
• M17: 11,468,771 km (0.091 R)
• M18: 11,857,127 km (0.091 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.68 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 557.3

Radius: 9.5

Gravity: 6.18 G

Time & Orbit

Eccentricity (e): 0.167

Orbit Range: 2.23 AU - 3.13 AU

Year: 2833 Days

Day: 9.2 Hours

Environment

Temp: -194 °C

Axial Tilt: 151.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 89,243,304 km

• M1: 118,182 km (0.045 R)
• M2: 417,827 km (0.084 R)
• M3: 734,974 km (0.117 R)
• M4: 1,204,263 km (0.06 R)
• M5: 2,815,432 km (0.109 R)
• M6: 3,206,331 km (0.048 R)
• M7: 4,158,970 km (0.071 R)
• M8: 4,846,522 km (0.025 R)
• M9: 5,217,824 km (0.116 R)
• M10: 5,887,574 km (0.055 R)
• M11: 6,338,013 km (0.116 R)
• M12: 6,839,764 km (0.095 R)
• M13: 9,256,368 km (0.036 R)
• M14: 9,720,421 km (0.07 R)
• M15: 10,350,527 km (0.109 R)
• M16: 10,656,305 km (0.086 R)
• M17: 13,013,220 km (0.044 R)
• M18: 15,104,299 km (0.099 R)
• M19: 17,196,126 km (0.065 R)

Planet 7 - Gas Giant

Semi-Major Axis: 4.71 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 996.3

Radius: 14.8

Gravity: 4.55 G

Time & Orbit

Eccentricity (e): 0.005

Orbit Range: 4.69 AU - 4.73 AU

Year: 6600 Days

Day: 13.1 Hours

Environment

Temp: -211 °C

Axial Tilt: 46.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 89,243,304 km

• M1: 184,155 km (0.092 R)
• M2: 750,682 km (0.105 R)
• M3: 1,501,963 km (0.118 R)
• M4: 2,293,934 km (0.113 R)
• M5: 2,767,860 km (0.052 R)
• M6: 4,976,373 km (0.108 R)
• M7: 6,080,854 km (0.065 R)
• M8: 6,637,658 km (0.097 R)
• M9: 7,458,950 km (0.1 R)
• M10: 9,395,494 km (0.086 R)
• M11: 10,877,560 km (0.102 R)
• M12: 11,860,119 km (0.089 R)
• M13: 16,325,017 km (0.109 R)
• M14: 18,460,826 km (0.117 R)
• M15: 18,967,813 km (0.076 R)
• M16: 20,932,931 km (0.105 R)
• M17: 25,353,548 km (0.092 R)
• M18: 26,434,692 km (0.093 R)
• M19: 30,663,225 km (0.115 R)
• M20: 34,333,759 km (0.116 R)
• M21: 36,444,435 km (0.104 R)

Planet 8 - Ice Giant

Semi-Major Axis: 10.72 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 860.8

Radius: 3.2

Gravity: 84.06 G

Time & Orbit

Eccentricity (e): 0.157

Orbit Range: 9.04 AU - 12.4 AU

Year: 22662 Days

Day: 20.8 Hours

Environment

Temp: -239 °C

Axial Tilt: 9.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (32)

Outer Limit: 89,243,304 km

• M1: 39,793 km (0.109 R)
• M2: 259,253 km (0.102 R)
• M3: 385,065 km (0.096 R)
• M4: 1,571,675 km (0.093 R)
• M5: 2,962,786 km (0.119 R)
• M6: 3,333,789 km (0.078 R)
• M7: 3,576,885 km (0.113 R)
• M8: 4,201,606 km (0.118 R)
• M9: 5,170,102 km (0.058 R)
• M10: 6,009,646 km (0.063 R)
• M11: 6,142,937 km (0.113 R)
• M12: 6,461,730 km (0.094 R)
• M13: 6,696,001 km (0.038 R)
• M14: 9,125,021 km (0.055 R)
• M15: 12,800,791 km (0.108 R)
• M16: 13,021,747 km (0.106 R)
• M17: 13,699,575 km (0.095 R)
• M18: 14,881,099 km (0.072 R)
• M19: 16,386,352 km (0.114 R)
• M20: 18,830,034 km (0.111 R)
• M21: 19,990,015 km (0.114 R)
• M22: 27,352,325 km (0.098 R)
• M23: 28,336,380 km (0.09 R)
• M24: 32,920,358 km (0.097 R)
• M25: 49,044,016 km (0.056 R)
• M26: 51,786,145 km (0.05 R)
• M27: 54,052,104 km (0.085 R)
• M28: 56,976,443 km (0.066 R)
• M29: 59,186,602 km (0.036 R)
• M30: 69,049,440 km (0.114 R)
• M31: 72,022,997 km (0.118 R)
• M32: 81,705,420 km (0.038 R)

Kuiper Belt

Range: 30 - 47 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 489 - 17,534 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit