🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.26 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.52 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.18

Radius: 1.77

Gravity: 1.33 G

Time & Orbit

Eccentricity (e): 0.197

Orbit Range: 0.42 AU - 0.62 AU

Year: 242 Days

Day: 30.7 Hours

Environment

Temp: -110 °C

Axial Tilt: 36.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 37,366,593 km

• M1: 48,619 km (0.072 R)
• M2: 512,672 km (0.114 R)

Planet 2 - Gas Giant

Semi-Major Axis: 0.82 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 421.4

Radius: 8.9

Gravity: 5.32 G

Time & Orbit

Eccentricity (e): 0.022

Orbit Range: 0.8 AU - 0.84 AU

Year: 479 Days

Day: 13.1 Hours

Environment

Temp: -154 °C

Axial Tilt: 32.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (8)

Outer Limit: 37,366,593 km

• M1: 110,702 km (0.095 R)
• M2: 523,892 km (0.065 R)
• M3: 1,422,077 km (0.054 R)
• M4: 1,752,988 km (0.09 R)
• M5: 2,620,955 km (0.043 R)
• M6: 3,616,678 km (0.065 R)
• M7: 4,431,687 km (0.114 R)
• M8: 5,131,207 km (0.09 R)

Planet 3 - Gas Giant

Semi-Major Axis: 1.19 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 168.7

Radius: 12

Gravity: 1.17 G

Time & Orbit

Eccentricity (e): 0.194

Orbit Range: 0.96 AU - 1.42 AU

Year: 838 Days

Day: 14.7 Hours

Environment

Temp: -172 °C

Axial Tilt: 39.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (7)

Outer Limit: 37,366,593 km

• M1: 153,338 km (0.083 R)
• M2: 529,876 km (0.106 R)
• M3: 969,693 km (0.112 R)
• M4: 1,421,479 km (0.072 R)
• M5: 1,903,932 km (0.094 R)
• M6: 2,542,416 km (0.104 R)
• M7: 5,440,875 km (0.116 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.87 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 911.7

Radius: 13.7

Gravity: 4.86 G

Time & Orbit

Eccentricity (e): 0.121

Orbit Range: 1.64 AU - 2.1 AU

Year: 1651 Days

Day: 9.2 Hours

Environment

Temp: -181 °C

Axial Tilt: 14.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 37,366,593 km

• M1: 170,542 km (0.095 R)
• M2: 837,748 km (0.095 R)
• M3: 1,300,454 km (0.066 R)
• M4: 1,758,972 km (0.094 R)
• M5: 2,314,578 km (0.119 R)
• M6: 3,185,986 km (0.115 R)
• M7: 3,966,288 km (0.074 R)
• M8: 4,870,757 km (0.1 R)
• M9: 5,463,165 km (0.056 R)
• M10: 6,054,226 km (0.069 R)
• M11: 6,480,281 km (0.044 R)
• M12: 7,735,257 km (0.075 R)
• M13: 8,543,983 km (0.089 R)
• M14: 9,845,185 km (0.048 R)
• M15: 11,424,789 km (0.061 R)
• M16: 12,756,659 km (0.082 R)
• M17: 13,292,519 km (0.105 R)
• M18: 13,886,273 km (0.093 R)
• M19: 14,453,398 km (0.118 R)

Planet 5 - Gas Giant

Semi-Major Axis: 2.28 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 177.9

Radius: 13.8

Gravity: 0.93 G

Time & Orbit

Eccentricity (e): 0.095

Orbit Range: 2.06 AU - 2.5 AU

Year: 2223 Days

Day: 5.3 Hours

Environment

Temp: -192 °C

Axial Tilt: 34.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 37,366,593 km

• M1: 171,589 km (0.089 R)
• M2: 602,131 km (0.115 R)
• M3: 1,138,889 km (0.092 R)
• M4: 1,646,175 km (0.095 R)
• M5: 2,133,116 km (0.097 R)
• M6: 2,741,979 km (0.11 R)
• M7: 3,555,044 km (0.058 R)
• M8: 3,994,562 km (0.119 R)
• M9: 4,740,906 km (0.052 R)
• M10: 5,766,100 km (0.089 R)
• M11: 6,242,270 km (0.072 R)
• M12: 7,175,911 km (0.062 R)
• M13: 8,636,883 km (0.089 R)
• M14: 9,350,017 km (0.101 R)
• M15: 10,194,796 km (0.097 R)
• M16: 10,636,109 km (0.077 R)
• M17: 11,189,023 km (0.119 R)

Planet 6 - Gas Giant

Semi-Major Axis: 3.54 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 518.5

Radius: 12

Gravity: 3.6 G

Time & Orbit

Eccentricity (e): 0.011

Orbit Range: 3.5 AU - 3.58 AU

Year: 4301 Days

Day: 9.1 Hours

Environment

Temp: -198 °C

Axial Tilt: 0.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (26)

Outer Limit: 37,366,593 km

• M1: 149,299 km (0.047 R)
• M2: 569,220 km (0.113 R)
• M3: 1,352,215 km (0.082 R)
• M4: 1,930,261 km (0.11 R)
• M5: 2,388,629 km (0.096 R)
• M6: 3,113,580 km (0.072 R)
• M7: 3,607,702 km (0.033 R)
• M8: 4,355,692 km (0.112 R)
• M9: 5,026,339 km (0.1 R)
• M10: 5,931,855 km (0.083 R)
• M11: 6,513,641 km (0.112 R)
• M12: 7,791,655 km (0.067 R)
• M13: 9,230,039 km (0.117 R)
• M14: 10,923,637 km (0.042 R)
• M15: 11,979,797 km (0.047 R)
• M16: 14,192,799 km (0.068 R)
• M17: 14,707,864 km (0.039 R)
• M18: 15,503,725 km (0.085 R)
• M19: 16,552,705 km (0.05 R)
• M20: 17,123,571 km (0.085 R)
• M21: 17,530,926 km (0.073 R)
• M22: 18,608,330 km (0.089 R)
• M23: 19,602,557 km (0.075 R)
• M24: 20,112,686 km (0.089 R)
• M25: 21,226,442 km (0.108 R)
• M26: 23,648,132 km (0.118 R)

Planet 7 - Gas Giant

Semi-Major Axis: 5.66 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 429.3

Radius: 11.7

Gravity: 3.14 G

Time & Orbit

Eccentricity (e): 0.114

Orbit Range: 5.01 AU - 6.31 AU

Year: 8694 Days

Day: 12.2 Hours

Environment

Temp: -216 °C

Axial Tilt: 2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (17)

Outer Limit: 37,366,593 km

• M1: 145,559 km (0.067 R)
• M2: 610,359 km (0.117 R)
• M3: 1,810,733 km (0.057 R)
• M4: 4,009,971 km (0.094 R)
• M5: 5,941,579 km (0.11 R)
• M6: 6,823,159 km (0.067 R)
• M7: 9,276,414 km (0.066 R)
• M8: 10,943,982 km (0.055 R)
• M9: 13,865,329 km (0.028 R)
• M10: 14,565,746 km (0.103 R)
• M11: 16,228,078 km (0.032 R)
• M12: 16,809,266 km (0.06 R)
• M13: 18,219,674 km (0.108 R)
• M14: 19,634,721 km (0.055 R)
• M15: 24,825,168 km (0.088 R)
• M16: 25,684,010 km (0.088 R)
• M17: 31,258,475 km (0.083 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: 539 - 19,262 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit