🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.31 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.62 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.93

Radius: 1.73

Gravity: 1.31 G

Time & Orbit

Eccentricity (e): 0.185

Orbit Range: 0.51 AU - 0.73 AU

Year: 320 Days

Day: 19.1 Hours

Environment

Temp: -120 °C

Axial Tilt: 10 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Gas Giant

Semi-Major Axis: 0.97 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 838.3

Radius: 10

Gravity: 8.38 G

Time & Orbit

Eccentricity (e): 0.229

Orbit Range: 0.75 AU - 1.19 AU

Year: 627 Days

Day: 10.3 Hours

Environment

Temp: -149 °C

Axial Tilt: 47.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 38,336,240 km

• M1: 124,615 km (0.078 R)
• M2: 578,944 km (0.033 R)
• M3: 1,244,355 km (0.08 R)
• M4: 1,905,727 km (0.035 R)
• M5: 2,435,154 km (0.058 R)
• M6: 2,752,302 km (0.102 R)
• M7: 3,072,591 km (0.083 R)
• M8: 4,156,726 km (0.1 R)
• M9: 4,629,456 km (0.115 R)
• M10: 5,137,789 km (0.118 R)
• M11: 5,758,321 km (0.117 R)
• M12: 6,655,908 km (0.081 R)
• M13: 7,506,821 km (0.081 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.68 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 625.6

Radius: 14.5

Gravity: 2.98 G

Time & Orbit

Eccentricity (e): 0.17

Orbit Range: 1.39 AU - 1.97 AU

Year: 1428 Days

Day: 5.6 Hours

Environment

Temp: -185 °C

Axial Tilt: 0.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 38,336,240 km

• M1: 181,013 km (0.097 R)
• M2: 717,471 km (0.105 R)
• M3: 1,472,791 km (0.051 R)
• M4: 1,972,448 km (0.066 R)
• M5: 3,195,111 km (0.071 R)
• M6: 4,367,809 km (0.059 R)
• M7: 4,895,441 km (0.041 R)
• M8: 7,473,910 km (0.102 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.71 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 816.4

Radius: 8.5

Gravity: 11.3 G

Time & Orbit

Eccentricity (e): 0.057

Orbit Range: 1.61 AU - 1.81 AU

Year: 1467 Days

Day: 6.4 Hours

Environment

Temp: -185 °C

Axial Tilt: 7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 38,336,240 km

• M1: 105,766 km (0.04 R)
• M2: 407,205 km (0.045 R)
• M3: 827,875 km (0.099 R)
• M4: 1,152,652 km (0.075 R)
• M5: 1,637,947 km (0.089 R)
• M6: 3,016,491 km (0.033 R)
• M7: 3,337,379 km (0.037 R)
• M8: 3,681,005 km (0.073 R)
• M9: 4,734,623 km (0.057 R)
• M10: 5,042,645 km (0.053 R)
• M11: 5,883,535 km (0.119 R)
• M12: 8,782,592 km (0.061 R)
• M13: 10,299,215 km (0.079 R)
• M14: 10,643,290 km (0.109 R)
• M15: 13,149,204 km (0.064 R)
• M16: 13,554,315 km (0.068 R)
• M17: 14,093,316 km (0.072 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.32 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 456.8

Radius: 8.8

Gravity: 5.9 G

Time & Orbit

Eccentricity (e): 0.047

Orbit Range: 2.21 AU - 2.43 AU

Year: 2318 Days

Day: 8.3 Hours

Environment

Temp: -189 °C

Axial Tilt: 33.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 38,336,240 km

• M1: 109,506 km (0.047 R)
• M2: 504,145 km (0.072 R)
• M3: 1,083,986 km (0.108 R)
• M4: 1,780,813 km (0.085 R)
• M5: 2,253,094 km (0.112 R)
• M6: 2,594,326 km (0.113 R)
• M7: 4,014,908 km (0.11 R)
• M8: 4,519,501 km (0.108 R)
• M9: 5,109,665 km (0.113 R)
• M10: 5,492,336 km (0.079 R)
• M11: 6,998,488 km (0.03 R)
• M12: 8,573,753 km (0.1 R)
• M13: 9,050,372 km (0.085 R)
• M14: 9,411,052 km (0.075 R)
• M15: 11,322,764 km (0.11 R)
• M16: 11,703,191 km (0.119 R)
• M17: 12,855,244 km (0.094 R)
• M18: 13,437,629 km (0.107 R)
• M19: 13,735,328 km (0.049 R)
• M20: 14,212,247 km (0.07 R)
• M21: 14,699,936 km (0.059 R)
• M22: 15,016,185 km (0.107 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.03 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 420

Radius: 13.8

Gravity: 2.21 G

Time & Orbit

Eccentricity (e): 0.167

Orbit Range: 2.52 AU - 3.54 AU

Year: 3460 Days

Day: 12 Hours

Environment

Temp: -201 °C

Axial Tilt: 28.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 38,336,240 km

• M1: 173,085 km (0.118 R)
• M2: 608,415 km (0.114 R)
• M3: 1,084,585 km (0.083 R)
• M4: 1,753,586 km (0.098 R)
• M5: 3,287,413 km (0.114 R)
• M6: 4,114,540 km (0.112 R)
• M7: 4,599,835 km (0.092 R)
• M8: 6,129,324 km (0.086 R)
• M9: 6,595,172 km (0.102 R)
• M10: 7,084,656 km (0.101 R)
• M11: 8,007,974 km (0.109 R)
• M12: 8,599,634 km (0.037 R)
• M13: 9,469,695 km (0.107 R)
• M14: 10,435,947 km (0.055 R)
• M15: 11,590,095 km (0.086 R)
• M16: 13,501,657 km (0.093 R)
• M17: 14,871,375 km (0.04 R)
• M18: 15,615,325 km (0.073 R)

Planet 7 - Gas Giant

Semi-Major Axis: 3.76 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 97.7

Radius: 9.7

Gravity: 1.04 G

Time & Orbit

Eccentricity (e): 0.096

Orbit Range: 3.4 AU - 4.12 AU

Year: 4783 Days

Day: 13.8 Hours

Environment

Temp: -201 °C

Axial Tilt: 87.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 38,336,240 km

• M1: 120,576 km (0.119 R)
• M2: 921,972 km (0.036 R)
• M3: 1,262,606 km (0.12 R)
• M4: 1,580,502 km (0.08 R)
• M5: 1,952,551 km (0.072 R)
• M6: 2,382,944 km (0.076 R)
• M7: 2,920,001 km (0.052 R)
• M8: 3,305,515 km (0.069 R)
• M9: 4,104,218 km (0.101 R)
• M10: 4,650,250 km (0.112 R)
• M11: 5,090,965 km (0.1 R)
• M12: 6,505,862 km (0.063 R)
• M13: 9,354,355 km (0.098 R)
• M14: 10,582,553 km (0.114 R)
• M15: 12,343,620 km (0.065 R)
• M16: 12,904,013 km (0.111 R)
• M17: 14,075,514 km (0.095 R)

Planet 8 - Gas Giant

Semi-Major Axis: 4.46 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 917.9

Radius: 8

Gravity: 14.34 G

Time & Orbit

Eccentricity (e): 0.234

Orbit Range: 3.42 AU - 5.5 AU

Year: 6179 Days

Day: 14.2 Hours

Environment

Temp: -212 °C

Axial Tilt: 3.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 38,336,240 km

• M1: 100,679 km (0.109 R)
• M2: 740,958 km (0.104 R)
• M3: 1,041,800 km (0.102 R)
• M4: 1,898,397 km (0.099 R)
• M5: 2,264,613 km (0.083 R)
• M6: 4,249,328 km (0.115 R)
• M7: 5,695,939 km (0.079 R)
• M8: 8,651,095 km (0.118 R)
• M9: 14,731,052 km (0.074 R)
• M10: 15,656,913 km (0.043 R)
• M11: 17,760,708 km (0.063 R)
• M12: 19,239,483 km (0.11 R)
• M13: 19,897,714 km (0.104 R)
• M14: 23,831,090 km (0.094 R)
• M15: 27,696,251 km (0.061 R)
• M16: 30,166,261 km (0.038 R)
• M17: 30,855,458 km (0.109 R)
• M18: 31,555,277 km (0.065 R)
• M19: 33,612,697 km (0.099 R)
• M20: 34,246,992 km (0.118 R)

Kuiper Belt

Range: 30 - 59 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 370 - 12,511 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit