🌌 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: 0.66 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.29

Radius: 1.39

Gravity: 1.19 G

Time & Orbit

Eccentricity (e): 0.21

Orbit Range: 0.52 AU - 0.8 AU

Year: 346 Days

Day: 20.1 Hours

Environment

Temp: -137 °C

Axial Tilt: 49.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.69 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 98.4

Radius: 9

Gravity: 1.21 G

Time & Orbit

Eccentricity (e): 0.149

Orbit Range: 0.59 AU - 0.79 AU

Year: 370 Days

Day: 5.7 Hours

Environment

Temp: -140 °C

Axial Tilt: 42.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 52,840,067 km

• M1: 118,033 km (0.114 R)
• M2: 615,296 km (0.073 R)
• M3: 1,014,124 km (0.075 R)
• M4: 1,426,266 km (0.087 R)
• M5: 2,141,643 km (0.1 R)
• M6: 2,449,964 km (0.075 R)
• M7: 2,747,814 km (0.049 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.85 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 917

Radius: 13.5

Gravity: 5.03 G

Time & Orbit

Eccentricity (e): 0.218

Orbit Range: 0.66 AU - 1.04 AU

Year: 506 Days

Day: 14.8 Hours

Environment

Temp: -140 °C

Axial Tilt: 33.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (10)

Outer Limit: 52,840,067 km

• M1: 167,849 km (0.114 R)
• M2: 643,869 km (0.119 R)
• M3: 1,132,157 km (0.095 R)
• M4: 2,329,239 km (0.115 R)
• M5: 2,925,237 km (0.116 R)
• M6: 3,595,734 km (0.073 R)
• M7: 4,307,222 km (0.053 R)
• M8: 5,144,372 km (0.118 R)
• M9: 5,956,538 km (0.112 R)
• M10: 6,730,857 km (0.058 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.43 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 708.2

Radius: 14.5

Gravity: 3.37 G

Time & Orbit

Eccentricity (e): 0.2

Orbit Range: 1.14 AU - 1.72 AU

Year: 1104 Days

Day: 8 Hours

Environment

Temp: -171 °C

Axial Tilt: 27.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 52,840,067 km

• M1: 180,565 km (0.066 R)
• M2: 650,900 km (0.106 R)
• M3: 1,511,387 km (0.103 R)
• M4: 2,026,154 km (0.111 R)
• M5: 2,622,750 km (0.049 R)
• M6: 3,692,375 km (0.104 R)
• M7: 4,379,777 km (0.115 R)
• M8: 5,016,914 km (0.101 R)
• M9: 5,570,726 km (0.065 R)
• M10: 7,185,186 km (0.085 R)
• M11: 8,048,216 km (0.1 R)
• M12: 8,894,491 km (0.03 R)
• M13: 9,383,227 km (0.03 R)
• M14: 10,604,694 km (0.083 R)
• M15: 11,154,915 km (0.112 R)

Planet 5 - Gas Giant

Semi-Major Axis: 4.33 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 304.4

Radius: 11.7

Gravity: 2.22 G

Time & Orbit

Eccentricity (e): 0.206

Orbit Range: 3.44 AU - 5.22 AU

Year: 5818 Days

Day: 13.1 Hours

Environment

Temp: -219 °C

Axial Tilt: 33.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 52,840,067 km

• M1: 145,858 km (0.111 R)
• M2: 655,538 km (0.085 R)
• M3: 3,390,337 km (0.047 R)
• M4: 3,876,230 km (0.058 R)
• M5: 5,565,490 km (0.09 R)
• M6: 7,333,288 km (0.101 R)
• M7: 8,185,397 km (0.118 R)
• M8: 8,801,740 km (0.12 R)
• M9: 11,671,476 km (0.115 R)
• M10: 12,736,912 km (0.055 R)
• M11: 15,710,619 km (0.116 R)
• M12: 16,492,567 km (0.099 R)
• M13: 18,133,805 km (0.12 R)
• M14: 22,013,476 km (0.079 R)
• M15: 22,569,382 km (0.115 R)
• M16: 24,073,289 km (0.102 R)

Planet 6 - Gas Giant

Semi-Major Axis: 4.45 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 253.4

Radius: 15

Gravity: 1.13 G

Time & Orbit

Eccentricity (e): 0.184

Orbit Range: 3.63 AU - 5.27 AU

Year: 6061 Days

Day: 10.2 Hours

Environment

Temp: -204 °C

Axial Tilt: 42 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (14)

Outer Limit: 52,840,067 km

• M1: 192,084 km (0.083 R)
• M2: 1,356,404 km (0.12 R)
• M3: 3,170,876 km (0.078 R)
• M4: 6,627,934 km (0.118 R)
• M5: 7,443,990 km (0.113 R)
• M6: 8,467,987 km (0.029 R)
• M7: 9,391,455 km (0.088 R)
• M8: 11,352,085 km (0.07 R)
• M9: 13,232,380 km (0.083 R)
• M10: 14,374,111 km (0.101 R)
• M11: 16,515,007 km (0.113 R)
• M12: 17,196,724 km (0.111 R)
• M13: 20,050,004 km (0.105 R)
• M14: 23,559,720 km (0.099 R)

Planet 7 - Ice Giant

Semi-Major Axis: 6.29 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 884.5

Radius: 7.5

Gravity: 15.72 G

Time & Orbit

Eccentricity (e): 0.152

Orbit Range: 5.33 AU - 7.25 AU

Year: 10186 Days

Day: 20.1 Hours

Environment

Temp: -231 °C

Axial Tilt: 18.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (34)

Outer Limit: 52,840,067 km

• M1: 93,199 km (0.111 R)
• M2: 654,939 km (0.114 R)
• M3: 1,009,636 km (0.082 R)
• M4: 1,903,932 km (0.059 R)
• M5: 2,453,106 km (0.073 R)
• M6: 3,033,546 km (0.039 R)
• M7: 3,393,628 km (0.043 R)
• M8: 4,772,770 km (0.054 R)
• M9: 5,639,840 km (0.048 R)
• M10: 6,336,966 km (0.08 R)
• M11: 7,424,692 km (0.091 R)
• M12: 8,215,765 km (0.048 R)
• M13: 13,345,327 km (0.063 R)
• M14: 14,115,905 km (0.116 R)
• M15: 15,745,475 km (0.058 R)
• M16: 18,107,925 km (0.099 R)
• M17: 18,972,002 km (0.114 R)
• M18: 20,697,165 km (0.102 R)
• M19: 21,037,201 km (0.049 R)
• M20: 21,728,492 km (0.079 R)
• M21: 22,974,792 km (0.094 R)
• M22: 25,414,285 km (0.091 R)
• M23: 26,297,510 km (0.093 R)
• M24: 28,542,376 km (0.049 R)
• M25: 29,389,549 km (0.114 R)
• M26: 32,258,238 km (0.088 R)
• M27: 33,293,305 km (0.028 R)
• M28: 39,580,156 km (0.059 R)
• M29: 40,899,310 km (0.114 R)
• M30: 41,569,658 km (0.115 R)
• M31: 44,184,180 km (0.088 R)
• M32: 50,042,732 km (0.07 R)
• M33: 51,273,473 km (0.106 R)
• M34: 52,052,878 km (0.04 R)

Kuiper Belt

Range: 30 - 55 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 416 - 12,384 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit