🌌 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: 0.6 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.89

Radius: 1.53

Gravity: 1.23 G

Time & Orbit

Eccentricity (e): 0.057

Orbit Range: 0.57 AU - 0.63 AU

Year: 305 Days

Day: 28.2 Hours

Environment

Temp: -126 °C

Axial Tilt: 1.1 °

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: 999.2

Radius: 11.3

Gravity: 7.83 G

Time & Orbit

Eccentricity (e): 0.143

Orbit Range: 0.59 AU - 0.79 AU

Year: 376 Days

Day: 14.3 Hours

Environment

Temp: -146 °C

Axial Tilt: 52 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 47,311,531 km

• M1: 140,622 km (0.057 R)
• M2: 582,085 km (0.091 R)
• M3: 964,158 km (0.104 R)
• M4: 1,493,436 km (0.041 R)
• M5: 1,965,566 km (0.113 R)
• M6: 2,365,292 km (0.111 R)
• M7: 3,261,533 km (0.117 R)
• M8: 3,635,677 km (0.083 R)
• M9: 4,025,080 km (0.105 R)
• M10: 4,529,375 km (0.034 R)
• M11: 5,138,836 km (0.077 R)
• M12: 5,614,258 km (0.094 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.75 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 848.1

Radius: 14.7

Gravity: 3.92 G

Time & Orbit

Eccentricity (e): 0.174

Orbit Range: 1.45 AU - 2.05 AU

Year: 1519 Days

Day: 5.1 Hours

Environment

Temp: -177 °C

Axial Tilt: 41.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 47,311,531 km

• M1: 182,809 km (0.101 R)
• M2: 684,111 km (0.117 R)
• M3: 1,209,499 km (0.11 R)
• M4: 1,937,592 km (0.098 R)
• M5: 3,035,042 km (0.111 R)
• M6: 4,156,128 km (0.055 R)
• M7: 4,632,448 km (0.109 R)
• M8: 6,286,551 km (0.089 R)
• M9: 6,995,944 km (0.076 R)
• M10: 7,562,771 km (0.053 R)
• M11: 8,277,400 km (0.103 R)
• M12: 8,943,110 km (0.073 R)
• M13: 10,279,618 km (0.119 R)
• M14: 11,412,223 km (0.095 R)
• M15: 14,136,251 km (0.106 R)

Planet 4 - Gas Giant

Semi-Major Axis: 2.13 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 22.4

Radius: 14.5

Gravity: 0.11 G

Time & Orbit

Eccentricity (e): 0.141

Orbit Range: 1.83 AU - 2.43 AU

Year: 2039 Days

Day: 10.4 Hours

Environment

Temp: -192 °C

Axial Tilt: 6.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 47,311,531 km

• M1: 190,288 km (0.111 R)
• M2: 806,333 km (0.103 R)
• M3: 1,362,089 km (0.079 R)
• M4: 1,814,921 km (0.071 R)
• M5: 2,335,971 km (0.112 R)
• M6: 4,306,773 km (0.053 R)
• M7: 5,128,065 km (0.035 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.28 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 259.2

Radius: 10.7

Gravity: 2.26 G

Time & Orbit

Eccentricity (e): 0.23

Orbit Range: 1.76 AU - 2.8 AU

Year: 2258 Days

Day: 5.3 Hours

Environment

Temp: -195 °C

Axial Tilt: 37.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 47,311,531 km

• M1: 133,142 km (0.103 R)
• M2: 615,745 km (0.029 R)
• M3: 1,016,518 km (0.106 R)
• M4: 1,505,403 km (0.069 R)
• M5: 2,103,496 km (0.074 R)
• M6: 3,960,155 km (0.042 R)
• M7: 4,902,322 km (0.045 R)
• M8: 5,247,594 km (0.118 R)
• M9: 5,919,588 km (0.051 R)
• M10: 6,623,595 km (0.101 R)
• M11: 7,278,086 km (0.113 R)
• M12: 8,226,537 km (0.077 R)
• M13: 9,012,973 km (0.096 R)
• M14: 9,912,804 km (0.046 R)
• M15: 10,871,277 km (0.086 R)
• M16: 11,603,260 km (0.119 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.51 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 985

Radius: 11.3

Gravity: 7.71 G

Time & Orbit

Eccentricity (e): 0.204

Orbit Range: 2 AU - 3.02 AU

Year: 2609 Days

Day: 8.3 Hours

Environment

Temp: -190 °C

Axial Tilt: 34.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (16)

Outer Limit: 47,311,531 km

• M1: 141,968 km (0.094 R)
• M2: 607,068 km (0.068 R)
• M3: 1,122,433 km (0.05 R)
• M4: 1,609,374 km (0.067 R)
• M5: 2,917,009 km (0.076 R)
• M6: 3,577,334 km (0.113 R)
• M7: 4,740,457 km (0.108 R)
• M8: 6,536,829 km (0.091 R)
• M9: 6,920,547 km (0.113 R)
• M10: 7,962,795 km (0.117 R)
• M11: 8,366,710 km (0.112 R)
• M12: 8,784,237 km (0.048 R)
• M13: 12,419,765 km (0.083 R)
• M14: 15,353,678 km (0.036 R)
• M15: 16,898,725 km (0.096 R)
• M16: 21,243,346 km (0.1 R)

Planet 7 - Gas Giant

Semi-Major Axis: 2.57 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 723.3

Radius: 8.9

Gravity: 9.13 G

Time & Orbit

Eccentricity (e): 0.064

Orbit Range: 2.41 AU - 2.73 AU

Year: 2703 Days

Day: 9.2 Hours

Environment

Temp: -207 °C

Axial Tilt: 35.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 47,311,531 km

• M1: 111,002 km (0.114 R)
• M2: 405,410 km (0.085 R)
• M3: 781,948 km (0.076 R)
• M4: 1,130,362 km (0.09 R)
• M5: 1,792,631 km (0.108 R)
• M6: 2,755,443 km (0.051 R)
• M7: 3,486,977 km (0.084 R)
• M8: 5,065,085 km (0.119 R)
• M9: 6,186,919 km (0.095 R)
• M10: 6,952,711 km (0.08 R)
• M11: 7,812,001 km (0.102 R)
• M12: 9,593,562 km (0.031 R)
• M13: 9,927,315 km (0.105 R)
• M14: 11,015,639 km (0.112 R)
• M15: 11,798,186 km (0.093 R)
• M16: 12,883,817 km (0.097 R)
• M17: 17,073,755 km (0.118 R)
• M18: 19,210,611 km (0.113 R)

Planet 8 - Ice Giant

Semi-Major Axis: 7.99 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 276.8

Radius: 6.5

Gravity: 6.55 G

Time & Orbit

Eccentricity (e): 0.082

Orbit Range: 7.33 AU - 8.65 AU

Year: 14816 Days

Day: 23.1 Hours

Environment

Temp: -231 °C

Axial Tilt: 44.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (31)

Outer Limit: 47,311,531 km

• M1: 81,381 km (0.084 R)
• M2: 335,847 km (0.115 R)
• M3: 544,087 km (0.113 R)
• M4: 926,759 km (0.094 R)
• M5: 1,237,324 km (0.093 R)
• M6: 1,545,346 km (0.029 R)
• M7: 2,225,867 km (0.09 R)
• M8: 3,023,223 km (0.098 R)
• M9: 3,736,057 km (0.074 R)
• M10: 4,270,271 km (0.106 R)
• M11: 4,497,660 km (0.093 R)
• M12: 5,293,371 km (0.081 R)
• M13: 6,360,453 km (0.051 R)
• M14: 7,280,031 km (0.097 R)
• M15: 8,154,730 km (0.114 R)
• M16: 8,821,038 km (0.087 R)
• M17: 11,090,887 km (0.066 R)
• M18: 13,178,525 km (0.078 R)
• M19: 14,157,344 km (0.064 R)
• M20: 15,850,044 km (0.098 R)
• M21: 17,097,989 km (0.113 R)
• M22: 19,553,938 km (0.109 R)
• M23: 20,906,452 km (0.089 R)
• M24: 22,320,302 km (0.081 R)
• M25: 23,619,709 km (0.111 R)
• M26: 24,243,083 km (0.04 R)
• M27: 28,916,969 km (0.08 R)
• M28: 35,880,451 km (0.095 R)
• M29: 36,703,838 km (0.091 R)
• M30: 39,125,827 km (0.06 R)
• M31: 42,692,540 km (0.064 R)

Planet 9 - Ice Giant

Semi-Major Axis: 10.83 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 120.5

Radius: 7.7

Gravity: 2.03 G

Time & Orbit

Eccentricity (e): 0.186

Orbit Range: 8.82 AU - 12.84 AU

Year: 23380 Days

Day: 23.7 Hours

Environment

Temp: -232 °C

Axial Tilt: 18.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 47,311,531 km

• M1: 95,743 km (0.073 R)
• M2: 362,027 km (0.061 R)
• M3: 1,686,866 km (0.118 R)
• M4: 4,843,081 km (0.115 R)
• M5: 5,284,844 km (0.064 R)
• M6: 9,645,772 km (0.079 R)
• M7: 11,240,036 km (0.073 R)
• M8: 11,734,008 km (0.036 R)
• M9: 16,499,897 km (0.105 R)
• M10: 16,923,558 km (0.116 R)
• M11: 18,539,066 km (0.108 R)
• M12: 40,577,375 km (0.107 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: 267 - 15,050 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit