🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.28 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.55 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.55

Radius: 1.19

Gravity: 1.09 G

Time & Orbit

Eccentricity (e): 0.192

Orbit Range: 0.44 AU - 0.66 AU

Year: 263 Days

Day: 37.5 Hours

Environment

Temp: -125 °C

Axial Tilt: 24.3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 53,457,376 km

• M1: 239,656 km (0.059 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.61 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.84

Radius: 1.71

Gravity: 1.31 G

Time & Orbit

Eccentricity (e): 0.172

Orbit Range: 0.51 AU - 0.71 AU

Year: 308 Days

Day: 39.8 Hours

Environment

Temp: -135 °C

Axial Tilt: 3 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 53,457,376 km

• M1: 67,469 km (0.065 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.08 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 87.4

Radius: 12.8

Gravity: 0.53 G

Time & Orbit

Eccentricity (e): 0.1

Orbit Range: 0.97 AU - 1.19 AU

Year: 725 Days

Day: 10.9 Hours

Environment

Temp: -165 °C

Axial Tilt: 37.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (6)

Outer Limit: 53,457,376 km

• M1: 159,172 km (0.086 R)
• M2: 666,608 km (0.116 R)
• M3: 1,116,299 km (0.095 R)
• M4: 1,937,592 km (0.083 R)
• M5: 2,576,674 km (0.04 R)
• M6: 3,160,105 km (0.077 R)

Asteroid Belt

Center: 1.34 AU

Composition

Type: Outer System (Icy)

A dense region of planetesimals and debris.

Boundary

Planet 4 - Gas Giant

Semi-Major Axis: 1.59 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 65.7

Radius: 13.1

Gravity: 0.38 G

Time & Orbit

Eccentricity (e): 0.179

Orbit Range: 1.31 AU - 1.87 AU

Year: 1295 Days

Day: 12.7 Hours

Environment

Temp: -173 °C

Axial Tilt: 12.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (5)

Outer Limit: 53,457,376 km

• M1: 163,062 km (0.09 R)
• M2: 969,993 km (0.064 R)
• M3: 1,532,630 km (0.114 R)
• M4: 3,070,945 km (0.065 R)
• M5: 5,341,392 km (0.038 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.79 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 118.3

Radius: 13.5

Gravity: 0.65 G

Time & Orbit

Eccentricity (e): 0.177

Orbit Range: 1.47 AU - 2.11 AU

Year: 1546 Days

Day: 13.2 Hours

Environment

Temp: -189 °C

Axial Tilt: 0.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 53,457,376 km

• M1: 167,998 km (0.076 R)
• M2: 705,504 km (0.094 R)
• M3: 1,207,404 km (0.112 R)
• M4: 1,681,630 km (0.11 R)
• M5: 3,379,565 km (0.085 R)
• M6: 3,961,800 km (0.081 R)
• M7: 4,562,885 km (0.052 R)
• M8: 4,985,798 km (0.105 R)
• M9: 6,102,097 km (0.11 R)
• M10: 6,617,163 km (0.065 R)
• M11: 7,555,440 km (0.096 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.02 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 596.1

Radius: 8.4

Gravity: 8.45 G

Time & Orbit

Eccentricity (e): 0.098

Orbit Range: 1.82 AU - 2.22 AU

Year: 1854 Days

Day: 8.9 Hours

Environment

Temp: -199 °C

Axial Tilt: 2.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 53,457,376 km

• M1: 104,419 km (0.104 R)
• M2: 370,105 km (0.108 R)
• M3: 759,808 km (0.1 R)
• M4: 1,199,027 km (0.075 R)
• M5: 1,638,246 km (0.119 R)
• M6: 2,217,938 km (0.091 R)
• M7: 2,643,694 km (0.08 R)
• M8: 3,490,866 km (0.109 R)
• M9: 4,587,568 km (0.084 R)
• M10: 5,128,365 km (0.104 R)
• M11: 5,414,396 km (0.117 R)
• M12: 6,311,983 km (0.084 R)
• M13: 7,305,612 km (0.12 R)
• M14: 7,955,615 km (0.115 R)
• M15: 8,582,280 km (0.049 R)
• M16: 9,305,736 km (0.108 R)
• M17: 10,069,433 km (0.064 R)
• M18: 10,766,858 km (0.106 R)
• M19: 12,690,836 km (0.047 R)

Planet 7 - Gas Giant

Semi-Major Axis: 2.19 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 982.5

Radius: 14.5

Gravity: 4.67 G

Time & Orbit

Eccentricity (e): 0.18

Orbit Range: 1.8 AU - 2.58 AU

Year: 2093 Days

Day: 13.5 Hours

Environment

Temp: -195 °C

Axial Tilt: 1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 53,457,376 km

• M1: 180,714 km (0.113 R)
• M2: 655,089 km (0.093 R)
• M3: 1,159,683 km (0.118 R)
• M4: 1,670,410 km (0.068 R)
• M5: 2,280,620 km (0.096 R)
• M6: 2,990,013 km (0.059 R)
• M7: 4,422,113 km (0.097 R)
• M8: 5,268,239 km (0.039 R)
• M9: 6,088,484 km (0.106 R)
• M10: 8,206,191 km (0.112 R)
• M11: 8,897,483 km (0.102 R)
• M12: 10,434,751 km (0.119 R)
• M13: 12,823,679 km (0.1 R)
• M14: 13,440,321 km (0.105 R)
• M15: 14,590,729 km (0.077 R)
• M16: 15,068,994 km (0.106 R)
• M17: 16,825,721 km (0.109 R)
• M18: 17,458,371 km (0.113 R)

Planet 8 - Gas Giant

Semi-Major Axis: 2.82 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 228

Radius: 8.2

Gravity: 3.39 G

Time & Orbit

Eccentricity (e): 0.245

Orbit Range: 2.13 AU - 3.51 AU

Year: 3058 Days

Day: 14.7 Hours

Environment

Temp: -198 °C

Axial Tilt: 0.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (15)

Outer Limit: 53,457,376 km

• M1: 102,026 km (0.091 R)
• M2: 368,160 km (0.085 R)
• M3: 777,610 km (0.109 R)
• M4: 1,060,350 km (0.105 R)
• M5: 1,531,284 km (0.095 R)
• M6: 2,407,927 km (0.1 R)
• M7: 3,023,672 km (0.112 R)
• M8: 4,505,738 km (0.108 R)
• M9: 7,485,129 km (0.095 R)
• M10: 9,009,382 km (0.091 R)
• M11: 9,396,093 km (0.085 R)
• M12: 10,909,724 km (0.089 R)
• M13: 11,648,887 km (0.102 R)
• M14: 12,900,423 km (0.101 R)
• M15: 13,981,417 km (0.111 R)

Planet 9 - Gas Giant

Semi-Major Axis: 4.82 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 659.6

Radius: 12.5

Gravity: 4.22 G

Time & Orbit

Eccentricity (e): 0.151

Orbit Range: 4.09 AU - 5.55 AU

Year: 6833 Days

Day: 6.6 Hours

Environment

Temp: -218 °C

Axial Tilt: 49.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 53,457,376 km

• M1: 155,881 km (0.11 R)
• M2: 726,746 km (0.111 R)
• M3: 1,364,781 km (0.108 R)
• M4: 2,443,232 km (0.074 R)
• M5: 3,831,650 km (0.066 R)
• M6: 4,249,776 km (0.065 R)
• M7: 4,753,323 km (0.094 R)
• M8: 5,537,515 km (0.058 R)
• M9: 6,305,251 km (0.052 R)
• M10: 7,818,583 km (0.08 R)
• M11: 8,911,695 km (0.114 R)
• M12: 11,005,317 km (0.047 R)
• M13: 11,856,230 km (0.115 R)
• M14: 12,589,409 km (0.057 R)
• M15: 16,460,553 km (0.083 R)
• M16: 17,439,970 km (0.118 R)
• M17: 23,249,903 km (0.081 R)
• M18: 24,232,461 km (0.026 R)
• M19: 25,072,304 km (0.103 R)
• M20: 26,544,347 km (0.102 R)
• M21: 28,073,387 km (0.09 R)
• M22: 28,999,846 km (0.072 R)
• M23: 29,850,909 km (0.05 R)
• M24: 33,012,361 km (0.103 R)

Planet 10 - Ice Giant

Semi-Major Axis: 10.07 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 223.2

Radius: 3.7

Gravity: 16.3 G

Time & Orbit

Eccentricity (e): 0.086

Orbit Range: 9.2 AU - 10.94 AU

Year: 20633 Days

Day: 24.2 Hours

Environment

Temp: -230 °C

Axial Tilt: 20.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 53,457,376 km

• M1: 46,226 km (0.053 R)
• M2: 554,859 km (0.064 R)
• M3: 1,282,503 km (0.102 R)
• M4: 1,417,141 km (0.07 R)
• M5: 1,879,548 km (0.104 R)
• M6: 3,093,983 km (0.096 R)
• M7: 5,143,773 km (0.034 R)
• M8: 6,445,873 km (0.097 R)
• M9: 8,317,043 km (0.025 R)
• M10: 9,577,405 km (0.106 R)
• M11: 17,288,727 km (0.107 R)
• M12: 17,515,966 km (0.101 R)
• M13: 20,568,810 km (0.099 R)
• M14: 25,490,131 km (0.058 R)
• M15: 27,392,567 km (0.028 R)
• M16: 29,066,417 km (0.091 R)
• M17: 32,847,204 km (0.029 R)
• M18: 34,494,875 km (0.072 R)
• M19: 42,593,356 km (0.025 R)

Kuiper Belt

Range: 30 - 56 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 258 - 16,866 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit