🌌 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: 0.59 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.56

Radius: 1.46

Gravity: 1.2 G

Time & Orbit

Eccentricity (e): 0.206

Orbit Range: 0.47 AU - 0.71 AU

Year: 293 Days

Day: 16.6 Hours

Environment

Temp: -121 °C

Axial Tilt: 4.4 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.59 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.6

Radius: 1.67

Gravity: 1.29 G

Time & Orbit

Eccentricity (e): 0.076

Orbit Range: 0.55 AU - 0.63 AU

Year: 293 Days

Day: 37.5 Hours

Environment

Temp: -134 °C

Axial Tilt: 21.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 3 - Gas Giant

Semi-Major Axis: 0.92 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 124.8

Radius: 13.4

Gravity: 0.7 G

Time & Orbit

Eccentricity (e): 0.012

Orbit Range: 0.91 AU - 0.93 AU

Year: 570 Days

Day: 9.9 Hours

Environment

Temp: -155 °C

Axial Tilt: 34.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 53,071,966 km

• M1: 169,345 km (0.111 R)
• M2: 614,847 km (0.028 R)
• M3: 1,735,934 km (0.088 R)
• M4: 3,006,468 km (0.116 R)
• M5: 3,483,835 km (0.028 R)
• M6: 4,000,397 km (0.117 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.33 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 312.1

Radius: 11.6

Gravity: 2.32 G

Time & Orbit

Eccentricity (e): 0.157

Orbit Range: 1.12 AU - 1.54 AU

Year: 990 Days

Day: 5 Hours

Environment

Temp: -168 °C

Axial Tilt: 4.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 53,071,966 km

• M1: 144,512 km (0.075 R)
• M2: 651,499 km (0.085 R)
• M3: 1,240,466 km (0.067 R)
• M4: 1,860,698 km (0.086 R)
• M5: 2,454,602 km (0.029 R)
• M6: 2,837,124 km (0.085 R)
• M7: 6,561,512 km (0.057 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.63 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 952.7

Radius: 10.4

Gravity: 8.81 G

Time & Orbit

Eccentricity (e): 0.057

Orbit Range: 1.54 AU - 1.72 AU

Year: 1344 Days

Day: 5.1 Hours

Environment

Temp: -185 °C

Axial Tilt: 36.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 53,071,966 km

• M1: 129,402 km (0.093 R)
• M2: 531,671 km (0.111 R)
• M3: 973,433 km (0.043 R)
• M4: 1,775,577 km (0.117 R)
• M5: 2,519,677 km (0.069 R)
• M6: 3,178,506 km (0.113 R)
• M7: 3,640,015 km (0.082 R)
• M8: 4,274,759 km (0.062 R)
• M9: 6,306,747 km (0.045 R)
• M10: 6,754,344 km (0.117 R)
• M11: 8,401,566 km (0.039 R)
• M12: 8,760,751 km (0.074 R)
• M13: 10,301,309 km (0.118 R)
• M14: 13,019,203 km (0.054 R)

Planet 6 - Gas Giant

Semi-Major Axis: 5.07 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 378.4

Radius: 8.1

Gravity: 5.77 G

Time & Orbit

Eccentricity (e): 0.031

Orbit Range: 4.91 AU - 5.23 AU

Year: 7371 Days

Day: 9.2 Hours

Environment

Temp: -218 °C

Axial Tilt: 19.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (29)

Outer Limit: 53,071,966 km

• M1: 100,679 km (0.06 R)
• M2: 392,844 km (0.047 R)
• M3: 1,026,391 km (0.089 R)
• M4: 1,403,078 km (0.102 R)
• M5: 1,721,273 km (0.09 R)
• M6: 2,013,139 km (0.119 R)
• M7: 2,662,094 km (0.052 R)
• M8: 3,035,490 km (0.118 R)
• M9: 3,594,687 km (0.104 R)
• M10: 5,110,413 km (0.108 R)
• M11: 6,538,474 km (0.076 R)
• M12: 7,115,174 km (0.072 R)
• M13: 7,986,432 km (0.064 R)
• M14: 8,408,896 km (0.109 R)
• M15: 8,725,296 km (0.067 R)
• M16: 10,071,527 km (0.104 R)
• M17: 12,241,743 km (0.055 R)
• M18: 12,700,261 km (0.115 R)
• M19: 13,814,466 km (0.056 R)
• M20: 14,479,578 km (0.097 R)
• M21: 14,820,212 km (0.116 R)
• M22: 17,292,167 km (0.062 R)
• M23: 18,859,953 km (0.093 R)
• M24: 23,267,705 km (0.038 R)
• M25: 23,735,198 km (0.109 R)
• M26: 25,093,696 km (0.062 R)
• M27: 27,098,906 km (0.049 R)
• M28: 28,493,607 km (0.053 R)
• M29: 32,092,633 km (0.111 R)

Planet 7 - Ice Giant

Semi-Major Axis: 6.27 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 904.8

Radius: 7.5

Gravity: 16.09 G

Time & Orbit

Eccentricity (e): 0.1

Orbit Range: 5.64 AU - 6.9 AU

Year: 10137 Days

Day: 23.1 Hours

Environment

Temp: -226 °C

Axial Tilt: 9.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (33)

Outer Limit: 53,071,966 km

• M1: 110,702 km (0.097 R)
• M2: 358,137 km (0.115 R)
• M3: 612,454 km (0.038 R)
• M4: 1,068,129 km (0.047 R)
• M5: 2,031,988 km (0.093 R)
• M6: 2,345,246 km (0.055 R)
• M7: 2,820,518 km (0.083 R)
• M8: 3,211,866 km (0.063 R)
• M9: 3,990,374 km (0.108 R)
• M10: 5,989,001 km (0.103 R)
• M11: 7,585,510 km (0.11 R)
• M12: 8,811,763 km (0.091 R)
• M13: 11,196,802 km (0.083 R)
• M14: 11,651,430 km (0.111 R)
• M15: 12,059,384 km (0.073 R)
• M16: 13,658,286 km (0.082 R)
• M17: 14,442,029 km (0.108 R)
• M18: 15,463,334 km (0.102 R)
• M19: 17,648,958 km (0.067 R)
• M20: 22,533,179 km (0.12 R)
• M21: 25,331,258 km (0.116 R)
• M22: 26,914,303 km (0.091 R)
• M23: 27,422,337 km (0.028 R)
• M24: 29,518,353 km (0.114 R)
• M25: 32,974,512 km (0.11 R)
• M26: 33,790,718 km (0.052 R)
• M27: 34,263,148 km (0.047 R)
• M28: 36,196,701 km (0.106 R)
• M29: 37,190,330 km (0.094 R)
• M30: 37,441,654 km (0.072 R)
• M31: 38,074,603 km (0.069 R)
• M32: 40,016,533 km (0.078 R)
• M33: 51,342,887 km (0.085 R)

Kuiper Belt

Range: 30 - 46 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 293 - 19,234 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit