🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.57 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 1.13 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.76

Radius: 1.25

Gravity: 1.13 G

Time & Orbit

Eccentricity (e): 0.153

Orbit Range: 0.96 AU - 1.3 AU

Year: 420 Days

Day: 37 Hours

Environment

Temp: 36 °C

Axial Tilt: 49.5 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Planet 2 - Terrestrial

Semi-Major Axis: 1.31 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.89

Radius: 1.72

Gravity: 1.31 G

Time & Orbit

Eccentricity (e): 0.179

Orbit Range: 1.08 AU - 1.54 AU

Year: 525 Days

Day: 18.9 Hours

Environment

Temp: 2 °C

Axial Tilt: 27.6 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Planet 3 - Terrestrial

Semi-Major Axis: 1.41 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.36

Radius: 0.66

Gravity: 0.83 G

Time & Orbit

Eccentricity (e): 0.062

Orbit Range: 1.32 AU - 1.5 AU

Year: 586 Days

Day: 33.7 Hours

Environment

Temp: 8 °C

Axial Tilt: 21.3 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Planet 4 - Terrestrial

Semi-Major Axis: 1.81 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.22

Radius: 1.08

Gravity: 1.05 G

Time & Orbit

Eccentricity (e): 0.052

Orbit Range: 1.72 AU - 1.9 AU

Year: 852 Days

Day: 25.7 Hours

Environment

Temp: -47 °C

Axial Tilt: 5.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 43,389,200 km

• M1: 31,116 km (0.075 R)

Planet 5 - Terrestrial

Semi-Major Axis: 2.81 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.95

Radius: 1.9

Gravity: 1.37 G

Time & Orbit

Eccentricity (e): 0.05

Orbit Range: 2.67 AU - 2.95 AU

Year: 1648 Days

Day: 22.2 Hours

Environment

Temp: -92 °C

Axial Tilt: 0 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 43,389,200 km

• M1: 2,655,961 km (0.117 R)

Planet 6 - Gas Giant

Semi-Major Axis: 5.7 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 595.1

Radius: 12.3

Gravity: 3.93 G

Time & Orbit

Eccentricity (e): 0.19

Orbit Range: 4.62 AU - 6.78 AU

Year: 4761 Days

Day: 8.7 Hours

Environment

Temp: -133 °C

Axial Tilt: 2.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 43,389,200 km

• M1: 155,731 km (0.09 R)
• M2: 596,746 km (0.113 R)
• M3: 1,281,904 km (0.114 R)
• M4: 1,914,554 km (0.094 R)
• M5: 3,032,349 km (0.065 R)
• M6: 3,703,445 km (0.082 R)
• M7: 4,097,635 km (0.087 R)
• M8: 5,762,360 km (0.107 R)
• M9: 6,173,455 km (0.089 R)
• M10: 7,629,491 km (0.111 R)
• M11: 8,834,801 km (0.079 R)
• M12: 10,721,530 km (0.116 R)
• M13: 11,300,324 km (0.066 R)
• M14: 13,983,063 km (0.108 R)
• M15: 14,459,233 km (0.087 R)
• M16: 15,612,782 km (0.055 R)
• M17: 16,357,031 km (0.032 R)
• M18: 16,767,378 km (0.107 R)
• M19: 17,365,770 km (0.042 R)
• M20: 18,040,306 km (0.055 R)
• M21: 19,441,739 km (0.093 R)
• M22: 20,641,365 km (0.046 R)

Planet 7 - Gas Giant

Semi-Major Axis: 6.17 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 571.3

Radius: 14.9

Gravity: 2.57 G

Time & Orbit

Eccentricity (e): 0.011

Orbit Range: 6.1 AU - 6.24 AU

Year: 5362 Days

Day: 11.8 Hours

Environment

Temp: -136 °C

Axial Tilt: 6.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (24)

Outer Limit: 43,389,200 km

• M1: 185,352 km (0.09 R)
• M2: 687,552 km (0.061 R)
• M3: 1,201,121 km (0.063 R)
• M4: 1,720,974 km (0.097 R)
• M5: 2,723,280 km (0.078 R)
• M6: 3,199,300 km (0.119 R)
• M7: 4,322,331 km (0.113 R)
• M8: 6,706,024 km (0.077 R)
• M9: 7,237,994 km (0.118 R)
• M10: 7,942,899 km (0.078 R)
• M11: 8,425,202 km (0.06 R)
• M12: 8,927,253 km (0.067 R)
• M13: 10,162,632 km (0.069 R)
• M14: 10,732,151 km (0.079 R)
• M15: 12,031,708 km (0.112 R)
• M16: 13,960,174 km (0.065 R)
• M17: 16,028,813 km (0.053 R)
• M18: 18,681,483 km (0.076 R)
• M19: 20,836,889 km (0.112 R)
• M20: 21,329,664 km (0.056 R)
• M21: 24,764,432 km (0.106 R)
• M22: 25,960,018 km (0.103 R)
• M23: 27,698,046 km (0.075 R)
• M24: 28,638,717 km (0.072 R)

Planet 8 - Gas Giant

Semi-Major Axis: 7.54 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 782.2

Radius: 14

Gravity: 3.99 G

Time & Orbit

Eccentricity (e): 0.039

Orbit Range: 7.25 AU - 7.83 AU

Year: 7243 Days

Day: 6.2 Hours

Environment

Temp: -154 °C

Axial Tilt: 48.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 43,389,200 km

• M1: 183,257 km (0.103 R)
• M2: 765,792 km (0.106 R)
• M3: 2,035,578 km (0.084 R)
• M4: 4,141,617 km (0.104 R)
• M5: 6,232,098 km (0.078 R)
• M6: 6,831,536 km (0.101 R)
• M7: 7,430,676 km (0.044 R)
• M8: 8,521,544 km (0.086 R)
• M9: 11,428,529 km (0.051 R)
• M10: 12,220,800 km (0.116 R)
• M11: 14,272,086 km (0.088 R)
• M12: 15,761,482 km (0.059 R)
• M13: 17,696,680 km (0.096 R)
• M14: 21,874,350 km (0.043 R)
• M15: 25,233,122 km (0.06 R)
• M16: 26,123,678 km (0.036 R)
• M17: 29,700,413 km (0.095 R)
• M18: 33,166,746 km (0.065 R)
• M19: 34,887,869 km (0.058 R)
• M20: 35,993,248 km (0.113 R)

Planet 9 - Gas Giant

Semi-Major Axis: 9.47 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 488.8

Radius: 11.1

Gravity: 3.97 G

Time & Orbit

Eccentricity (e): 0.144

Orbit Range: 8.11 AU - 10.83 AU

Year: 10195 Days

Day: 8.6 Hours

Environment

Temp: -176 °C

Axial Tilt: 20.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (29)

Outer Limit: 43,389,200 km

• M1: 138,528 km (0.111 R)
• M2: 505,192 km (0.085 R)
• M3: 915,838 km (0.042 R)
• M4: 1,735,186 km (0.089 R)
• M5: 2,258,629 km (0.078 R)
• M6: 2,644,890 km (0.111 R)
• M7: 3,140,807 km (0.118 R)
• M8: 3,847,508 km (0.055 R)
• M9: 4,212,078 km (0.115 R)
• M10: 4,773,369 km (0.118 R)
• M11: 6,468,462 km (0.075 R)
• M12: 6,910,823 km (0.042 R)
• M13: 7,531,954 km (0.077 R)
• M14: 7,980,448 km (0.111 R)
• M15: 9,763,355 km (0.079 R)
• M16: 10,748,158 km (0.064 R)
• M17: 11,212,360 km (0.109 R)
• M18: 12,403,758 km (0.116 R)
• M19: 12,972,379 km (0.074 R)
• M20: 14,100,796 km (0.077 R)
• M21: 16,013,854 km (0.098 R)
• M22: 17,950,249 km (0.112 R)
• M23: 18,974,695 km (0.102 R)
• M24: 23,379,754 km (0.071 R)
• M25: 28,717,406 km (0.101 R)
• M26: 29,914,937 km (0.1 R)
• M27: 36,986,727 km (0.114 R)
• M28: 38,165,259 km (0.092 R)
• M29: 43,130,263 km (0.09 R)

Kuiper Belt

Range: 31.4 - 56.4 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 247 - 15,614 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit