🌌 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: 0.57 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.9

Radius: 1.89

Gravity: 1.37 G

Time & Orbit

Eccentricity (e): 0.073

Orbit Range: 0.53 AU - 0.61 AU

Year: 278 Days

Day: 47.6 Hours

Environment

Temp: -123 °C

Axial Tilt: 17 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.8 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 206.2

Radius: 8.8

Gravity: 2.66 G

Time & Orbit

Eccentricity (e): 0.189

Orbit Range: 0.65 AU - 0.95 AU

Year: 462 Days

Day: 14.5 Hours

Environment

Temp: -143 °C

Axial Tilt: 19.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 25,338,162 km

• M1: 109,506 km (0.088 R)
• M2: 384,915 km (0.079 R)
• M3: 662,719 km (0.088 R)
• M4: 1,205,160 km (0.098 R)
• M5: 1,581,249 km (0.095 R)
• M6: 2,706,525 km (0.088 R)
• M7: 3,443,294 km (0.074 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.04 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 900.3

Radius: 9

Gravity: 11.11 G

Time & Orbit

Eccentricity (e): 0.178

Orbit Range: 0.85 AU - 1.23 AU

Year: 685 Days

Day: 10.6 Hours

Environment

Temp: -162 °C

Axial Tilt: 19.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 25,338,162 km

• M1: 111,899 km (0.032 R)
• M2: 506,688 km (0.062 R)
• M3: 806,632 km (0.107 R)
• M4: 1,170,603 km (0.109 R)
• M5: 1,508,695 km (0.081 R)
• M6: 1,796,072 km (0.105 R)
• M7: 2,260,873 km (0.075 R)
• M8: 2,876,318 km (0.068 R)
• M9: 3,165,192 km (0.06 R)
• M10: 3,543,076 km (0.078 R)
• M11: 4,913,392 km (0.072 R)
• M12: 5,440,426 km (0.077 R)
• M13: 5,786,146 km (0.076 R)
• M14: 8,178,516 km (0.077 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.38 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 902.2

Radius: 14.3

Gravity: 4.41 G

Time & Orbit

Eccentricity (e): 0.151

Orbit Range: 1.17 AU - 1.59 AU

Year: 1047 Days

Day: 6.1 Hours

Environment

Temp: -173 °C

Axial Tilt: 41.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 25,338,162 km

• M1: 178,021 km (0.119 R)
• M2: 818,450 km (0.114 R)
• M3: 1,505,104 km (0.107 R)
• M4: 2,110,676 km (0.087 R)
• M5: 2,747,963 km (0.118 R)
• M6: 3,304,767 km (0.059 R)
• M7: 3,823,273 km (0.04 R)
• M8: 4,575,301 km (0.032 R)
• M9: 5,342,888 km (0.081 R)
• M10: 7,037,832 km (0.096 R)
• M11: 8,009,171 km (0.079 R)
• M12: 9,039,152 km (0.117 R)
• M13: 9,541,203 km (0.119 R)
• M14: 10,155,601 km (0.116 R)
• M15: 11,464,134 km (0.096 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.95 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 456.5

Radius: 10.8

Gravity: 3.91 G

Time & Orbit

Eccentricity (e): 0.136

Orbit Range: 1.68 AU - 2.22 AU

Year: 1758 Days

Day: 12.8 Hours

Environment

Temp: -191 °C

Axial Tilt: 43.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 25,338,162 km

• M1: 134,339 km (0.116 R)
• M2: 548,575 km (0.109 R)
• M3: 1,017,565 km (0.044 R)
• M4: 1,627,176 km (0.118 R)
• M5: 2,070,584 km (0.073 R)
• M6: 2,632,773 km (0.092 R)
• M7: 3,370,889 km (0.053 R)
• M8: 4,369,754 km (0.06 R)
• M9: 4,968,444 km (0.098 R)
• M10: 6,644,539 km (0.094 R)
• M11: 8,320,334 km (0.035 R)
• M12: 8,728,138 km (0.069 R)
• M13: 9,583,838 km (0.106 R)
• M14: 10,032,332 km (0.118 R)
• M15: 10,936,652 km (0.109 R)
• M16: 12,300,386 km (0.108 R)
• M17: 12,791,964 km (0.094 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.66 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 672.8

Radius: 10.1

Gravity: 6.6 G

Time & Orbit

Eccentricity (e): 0.178

Orbit Range: 2.19 AU - 3.13 AU

Year: 2801 Days

Day: 11.8 Hours

Environment

Temp: -206 °C

Axial Tilt: 3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (21)

Outer Limit: 25,338,162 km

• M1: 127,757 km (0.1 R)
• M2: 442,361 km (0.108 R)
• M3: 1,095,356 km (0.114 R)
• M4: 1,502,411 km (0.052 R)
• M5: 1,936,245 km (0.109 R)
• M6: 3,572,547 km (0.104 R)
• M7: 3,899,717 km (0.082 R)
• M8: 4,749,732 km (0.068 R)
• M9: 5,901,038 km (0.068 R)
• M10: 6,872,526 km (0.068 R)
• M11: 7,883,060 km (0.119 R)
• M12: 8,307,319 km (0.036 R)
• M13: 8,884,917 km (0.053 R)
• M14: 10,466,316 km (0.075 R)
• M15: 10,859,459 km (0.058 R)
• M16: 11,221,635 km (0.062 R)
• M17: 11,717,104 km (0.044 R)
• M18: 12,575,496 km (0.063 R)
• M19: 14,321,004 km (0.109 R)
• M20: 16,963,651 km (0.099 R)
• M21: 19,205,973 km (0.059 R)

Planet 7 - Gas Giant

Semi-Major Axis: 2.8 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 936.9

Radius: 10.6

Gravity: 8.34 G

Time & Orbit

Eccentricity (e): 0.24

Orbit Range: 2.13 AU - 3.47 AU

Year: 3025 Days

Day: 8.5 Hours

Environment

Temp: -209 °C

Axial Tilt: 9.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 25,338,162 km

• M1: 132,843 km (0.094 R)
• M2: 527,183 km (0.106 R)
• M3: 1,036,414 km (0.081 R)
• M4: 1,811,630 km (0.112 R)
• M5: 2,852,233 km (0.117 R)
• M6: 3,742,490 km (0.097 R)
• M7: 4,252,619 km (0.094 R)
• M8: 4,881,379 km (0.111 R)
• M9: 5,597,803 km (0.064 R)
• M10: 5,981,521 km (0.049 R)
• M11: 8,310,910 km (0.095 R)
• M12: 10,232,046 km (0.104 R)
• M13: 11,666,839 km (0.104 R)
• M14: 14,724,320 km (0.074 R)
• M15: 17,457,324 km (0.074 R)
• M16: 19,498,437 km (0.106 R)

Planet 8 - Ice Giant

Semi-Major Axis: 6.11 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 729.5

Radius: 4.5

Gravity: 36.02 G

Time & Orbit

Eccentricity (e): 0.161

Orbit Range: 5.13 AU - 7.09 AU

Year: 9752 Days

Day: 20.9 Hours

Environment

Temp: -225 °C

Axial Tilt: 21.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (34)

Outer Limit: 25,338,162 km

• M1: 55,950 km (0.117 R)
• M2: 360,381 km (0.108 R)
• M3: 567,874 km (0.084 R)
• M4: 950,694 km (0.075 R)
• M5: 1,228,498 km (0.093 R)
• M6: 2,778,332 km (0.086 R)
• M7: 2,930,024 km (0.086 R)
• M8: 3,202,741 km (0.116 R)
• M9: 4,040,788 km (0.108 R)
• M10: 6,433,756 km (0.108 R)
• M11: 7,173,367 km (0.085 R)
• M12: 7,418,409 km (0.046 R)
• M13: 8,098,930 km (0.076 R)
• M14: 8,959,865 km (0.059 R)
• M15: 9,291,973 km (0.101 R)
• M16: 9,632,308 km (0.103 R)
• M17: 9,930,456 km (0.103 R)
• M18: 11,130,830 km (0.114 R)
• M19: 11,681,799 km (0.115 R)
• M20: 14,842,652 km (0.119 R)
• M21: 15,919,158 km (0.058 R)
• M22: 24,213,911 km (0.115 R)
• M23: 25,324,376 km (0.059 R)
• M24: 25,607,266 km (0.099 R)
• M25: 25,987,693 km (0.117 R)
• M26: 26,275,370 km (0.057 R)
• M27: 26,662,380 km (0.115 R)
• M28: 27,447,769 km (0.118 R)
• M29: 31,065,793 km (0.111 R)
• M30: 32,265,269 km (0.059 R)
• M31: 37,985,143 km (0.071 R)
• M32: 38,853,709 km (0.108 R)
• M33: 40,759,436 km (0.083 R)
• M34: 45,864,164 km (0.094 R)

Planet 9 - Ice Giant

Semi-Major Axis: 8.04 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 46.7

Radius: 4.2

Gravity: 2.65 G

Time & Orbit

Eccentricity (e): 0.021

Orbit Range: 7.87 AU - 8.21 AU

Year: 14720 Days

Day: 16.3 Hours

Environment

Temp: -220 °C

Axial Tilt: 10.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 25,338,162 km

• M1: 52,359 km (0.11 R)
• M2: 776,712 km (0.114 R)
• M3: 952,639 km (0.108 R)
• M4: 1,396,347 km (0.07 R)
• M5: 2,104,992 km (0.117 R)
• M6: 3,308,806 km (0.114 R)
• M7: 6,107,782 km (0.077 R)
• M8: 14,458,185 km (0.059 R)
• M9: 15,471,561 km (0.109 R)
• M10: 15,745,924 km (0.093 R)
• M11: 20,522,584 km (0.115 R)
• M12: 22,563,697 km (0.12 R)

Kuiper Belt

Range: 30 - 54 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 195 - 10,859 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit