🌌 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: 0.35

Radius: 0.66

Gravity: 0.8 G

Time & Orbit

Eccentricity (e): 0.06

Orbit Range: 0.61 AU - 0.69 AU

Year: 344 Days

Day: 37.4 Hours

Environment

Temp: -123 °C

Axial Tilt: 178.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.84 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 686.6

Radius: 12.6

Gravity: 4.32 G

Time & Orbit

Eccentricity (e): 0.084

Orbit Range: 0.77 AU - 0.91 AU

Year: 505 Days

Day: 9.3 Hours

Environment

Temp: -145 °C

Axial Tilt: 14.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 55,487,203 km

• M1: 156,928 km (0.114 R)
• M2: 735,722 km (0.068 R)
• M3: 1,322,894 km (0.114 R)
• M4: 1,897,499 km (0.112 R)
• M5: 2,427,225 km (0.108 R)
• M6: 2,823,361 km (0.106 R)
• M7: 3,481,591 km (0.084 R)
• M8: 3,989,326 km (0.113 R)
• M9: 4,427,947 km (0.046 R)
• M10: 4,977,720 km (0.08 R)
• M11: 6,178,093 km (0.071 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.21 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 88.9

Radius: 9.7

Gravity: 0.94 G

Time & Orbit

Eccentricity (e): 0.235

Orbit Range: 0.93 AU - 1.49 AU

Year: 873 Days

Day: 6.6 Hours

Environment

Temp: -168 °C

Axial Tilt: 32.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (9)

Outer Limit: 55,487,203 km

• M1: 122,072 km (0.116 R)
• M2: 567,874 km (0.054 R)
• M3: 870,211 km (0.107 R)
• M4: 1,284,747 km (0.095 R)
• M5: 1,683,574 km (0.101 R)
• M6: 2,531,346 km (0.111 R)
• M7: 2,880,058 km (0.053 R)
• M8: 3,347,701 km (0.025 R)
• M9: 4,502,597 km (0.103 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.61 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 309.2

Radius: 13.8

Gravity: 1.62 G

Time & Orbit

Eccentricity (e): 0.195

Orbit Range: 1.3 AU - 1.92 AU

Year: 1340 Days

Day: 5 Hours

Environment

Temp: -173 °C

Axial Tilt: 10.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 55,487,203 km

• M1: 171,738 km (0.067 R)
• M2: 711,338 km (0.114 R)
• M3: 1,178,831 km (0.114 R)
• M4: 1,797,119 km (0.12 R)
• M5: 2,382,196 km (0.097 R)
• M6: 3,211,417 km (0.115 R)
• M7: 3,672,179 km (0.105 R)
• M8: 4,258,004 km (0.046 R)
• M9: 4,694,232 km (0.049 R)
• M10: 5,482,164 km (0.086 R)
• M11: 6,838,717 km (0.092 R)
• M12: 7,464,186 km (0.05 R)
• M13: 8,001,691 km (0.101 R)
• M14: 8,749,830 km (0.118 R)
• M15: 9,292,571 km (0.074 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.82 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 650.7

Radius: 9.2

Gravity: 7.69 G

Time & Orbit

Eccentricity (e): 0.008

Orbit Range: 1.81 AU - 1.83 AU

Year: 1611 Days

Day: 10.9 Hours

Environment

Temp: -191 °C

Axial Tilt: 49.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 55,487,203 km

• M1: 115,041 km (0.082 R)
• M2: 418,126 km (0.108 R)
• M3: 855,700 km (0.079 R)
• M4: 1,843,794 km (0.115 R)
• M5: 2,268,801 km (0.05 R)
• M6: 2,609,585 km (0.081 R)
• M7: 3,058,080 km (0.052 R)
• M8: 3,896,277 km (0.09 R)
• M9: 4,312,757 km (0.055 R)
• M10: 5,171,299 km (0.078 R)
• M11: 5,585,237 km (0.072 R)
• M12: 5,904,329 km (0.055 R)
• M13: 6,832,284 km (0.04 R)
• M14: 7,576,085 km (0.099 R)
• M15: 8,197,664 km (0.083 R)
• M16: 10,608,583 km (0.058 R)
• M17: 12,858,386 km (0.085 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.61 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 382.5

Radius: 9.5

Gravity: 4.24 G

Time & Orbit

Eccentricity (e): 0.142

Orbit Range: 2.24 AU - 2.98 AU

Year: 2766 Days

Day: 10 Hours

Environment

Temp: -195 °C

Axial Tilt: 43.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 55,487,203 km

• M1: 118,182 km (0.081 R)
• M2: 483,351 km (0.102 R)
• M3: 947,403 km (0.078 R)
• M4: 1,298,809 km (0.066 R)
• M5: 1,644,529 km (0.065 R)
• M6: 1,946,717 km (0.11 R)
• M7: 2,796,732 km (0.106 R)
• M8: 3,552,800 km (0.099 R)
• M9: 4,459,513 km (0.075 R)
• M10: 5,655,697 km (0.092 R)
• M11: 6,251,246 km (0.056 R)
• M12: 6,751,801 km (0.09 R)
• M13: 7,743,934 km (0.029 R)
• M14: 8,136,179 km (0.09 R)
• M15: 10,445,073 km (0.095 R)
• M16: 11,534,445 km (0.07 R)
• M17: 12,167,094 km (0.112 R)
• M18: 12,822,632 km (0.088 R)
• M19: 13,762,406 km (0.106 R)
• M20: 14,474,043 km (0.104 R)
• M21: 14,839,062 km (0.066 R)
• M22: 16,409,989 km (0.064 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.39 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 501

Radius: 14.5

Gravity: 2.38 G

Time & Orbit

Eccentricity (e): 0.205

Orbit Range: 2.7 AU - 4.08 AU

Year: 4095 Days

Day: 6.2 Hours

Environment

Temp: -208 °C

Axial Tilt: 29.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 55,487,203 km

• M1: 180,265 km (0.104 R)
• M2: 655,837 km (0.091 R)
• M3: 1,210,995 km (0.11 R)
• M4: 3,840,028 km (0.063 R)
• M5: 4,649,801 km (0.078 R)
• M6: 5,362,036 km (0.091 R)
• M7: 6,730,707 km (0.074 R)
• M8: 7,644,152 km (0.104 R)
• M9: 8,567,620 km (0.029 R)
• M10: 10,391,816 km (0.091 R)
• M11: 12,099,925 km (0.084 R)
• M12: 14,038,264 km (0.088 R)
• M13: 14,848,187 km (0.068 R)
• M14: 16,340,575 km (0.075 R)
• M15: 17,581,639 km (0.096 R)
• M16: 18,463,369 km (0.097 R)
• M17: 18,945,523 km (0.089 R)
• M18: 21,351,805 km (0.112 R)
• M19: 22,423,674 km (0.084 R)

Planet 8 - Ice Giant

Semi-Major Axis: 6.76 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 799.3

Radius: 4.4

Gravity: 41.29 G

Time & Orbit

Eccentricity (e): 0.032

Orbit Range: 6.54 AU - 6.98 AU

Year: 11530 Days

Day: 16.6 Hours

Environment

Temp: -225 °C

Axial Tilt: 29.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (31)

Outer Limit: 55,487,203 km

• M1: 54,753 km (0.065 R)
• M2: 249,380 km (0.03 R)
• M3: 417,228 km (0.104 R)
• M4: 811,419 km (0.108 R)
• M5: 995,723 km (0.092 R)
• M6: 1,284,597 km (0.056 R)
• M7: 2,028,697 km (0.049 R)
• M8: 2,862,555 km (0.08 R)
• M9: 3,267,666 km (0.119 R)
• M10: 4,370,352 km (0.027 R)
• M11: 4,776,660 km (0.11 R)
• M12: 4,939,422 km (0.063 R)
• M13: 8,448,241 km (0.086 R)
• M14: 12,575,047 km (0.062 R)
• M15: 17,561,444 km (0.109 R)
• M16: 18,986,663 km (0.101 R)
• M17: 22,426,366 km (0.053 R)
• M18: 23,816,430 km (0.112 R)
• M19: 25,957,624 km (0.03 R)
• M20: 26,665,072 km (0.104 R)
• M21: 26,972,047 km (0.116 R)
• M22: 29,187,741 km (0.039 R)
• M23: 29,623,071 km (0.119 R)
• M24: 31,521,767 km (0.081 R)
• M25: 35,807,148 km (0.079 R)
• M26: 37,063,022 km (0.059 R)
• M27: 39,928,569 km (0.065 R)
• M28: 40,465,027 km (0.089 R)
• M29: 47,132,305 km (0.119 R)
• M30: 51,908,516 km (0.088 R)
• M31: 53,353,333 km (0.111 R)

Kuiper Belt

Range: 30 - 58 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 177 - 15,373 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit