🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.27 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.54 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.82

Radius: 1.71

Gravity: 1.31 G

Time & Orbit

Eccentricity (e): 0.028

Orbit Range: 0.52 AU - 0.56 AU

Year: 252 Days

Day: 36.1 Hours

Environment

Temp: -124 °C

Axial Tilt: 25.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 2 - Terrestrial

Semi-Major Axis: 0.64 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.15

Radius: 1.58

Gravity: 1.26 G

Time & Orbit

Eccentricity (e): 0.17

Orbit Range: 0.53 AU - 0.75 AU

Year: 326 Days

Day: 40.5 Hours

Environment

Temp: -128 °C

Axial Tilt: 21.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 53,213,567 km

• M1: 40,092 km (0.087 R)

Planet 3 - Gas Giant

Semi-Major Axis: 0.81 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 279

Radius: 9.2

Gravity: 3.3 G

Time & Orbit

Eccentricity (e): 0.012

Orbit Range: 0.8 AU - 0.82 AU

Year: 464 Days

Day: 12.7 Hours

Environment

Temp: -155 °C

Axial Tilt: 12.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (11)

Outer Limit: 53,213,567 km

• M1: 115,639 km (0.112 R)
• M2: 420,220 km (0.096 R)
• M3: 838,047 km (0.118 R)
• M4: 1,144,125 km (0.082 R)
• M5: 1,434,943 km (0.1 R)
• M6: 2,061,309 km (0.11 R)
• M7: 2,429,021 km (0.09 R)
• M8: 2,801,968 km (0.099 R)
• M9: 3,088,747 km (0.088 R)
• M10: 3,449,876 km (0.112 R)
• M11: 4,057,094 km (0.117 R)

Planet 4 - Gas Giant

Semi-Major Axis: 1.05 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 986.5

Radius: 9.5

Gravity: 10.93 G

Time & Orbit

Eccentricity (e): 0.064

Orbit Range: 0.98 AU - 1.12 AU

Year: 684 Days

Day: 13.5 Hours

Environment

Temp: -160 °C

Axial Tilt: 35.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 53,213,567 km

• M1: 120,426 km (0.117 R)
• M2: 853,755 km (0.118 R)
• M3: 1,433,447 km (0.079 R)
• M4: 1,729,800 km (0.072 R)
• M5: 2,087,189 km (0.081 R)
• M6: 2,583,555 km (0.086 R)
• M7: 3,066,457 km (0.096 R)
• M8: 3,680,856 km (0.108 R)
• M9: 4,025,380 km (0.078 R)
• M10: 5,742,613 km (0.07 R)
• M11: 6,719,787 km (0.11 R)
• M12: 7,167,683 km (0.113 R)

Planet 5 - Gas Giant

Semi-Major Axis: 1.51 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 243.3

Radius: 13

Gravity: 1.44 G

Time & Orbit

Eccentricity (e): 0.028

Orbit Range: 1.47 AU - 1.55 AU

Year: 1180 Days

Day: 11.7 Hours

Environment

Temp: -185 °C

Axial Tilt: 49.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 53,213,567 km

• M1: 161,865 km (0.116 R)
• M2: 767,437 km (0.109 R)
• M3: 1,254,977 km (0.116 R)
• M4: 1,822,252 km (0.079 R)
• M5: 2,483,773 km (0.098 R)
• M6: 3,099,518 km (0.045 R)
• M7: 3,930,834 km (0.102 R)
• M8: 4,415,232 km (0.099 R)
• M9: 5,377,894 km (0.093 R)
• M10: 5,957,586 km (0.082 R)
• M11: 6,704,079 km (0.118 R)
• M12: 7,974,913 km (0.102 R)

Planet 6 - Gas Giant

Semi-Major Axis: 2.55 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 313.6

Radius: 11.7

Gravity: 2.29 G

Time & Orbit

Eccentricity (e): 0.023

Orbit Range: 2.49 AU - 2.61 AU

Year: 2589 Days

Day: 13.1 Hours

Environment

Temp: -199 °C

Axial Tilt: 33.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 53,213,567 km

• M1: 145,858 km (0.095 R)
• M2: 618,886 km (0.108 R)
• M3: 1,238,670 km (0.036 R)
• M4: 1,768,546 km (0.05 R)
• M5: 2,686,179 km (0.081 R)
• M6: 3,120,761 km (0.076 R)
• M7: 3,552,052 km (0.118 R)
• M8: 4,340,881 km (0.098 R)
• M9: 5,286,789 km (0.067 R)
• M10: 5,738,874 km (0.106 R)
• M11: 7,669,284 km (0.043 R)
• M12: 8,429,840 km (0.104 R)
• M13: 9,176,034 km (0.114 R)
• M14: 10,135,705 km (0.104 R)
• M15: 10,764,165 km (0.095 R)
• M16: 11,642,604 km (0.086 R)
• M17: 12,254,310 km (0.094 R)
• M18: 12,847,166 km (0.109 R)
• M19: 14,175,745 km (0.089 R)
• M20: 14,609,279 km (0.098 R)

Planet 7 - Gas Giant

Semi-Major Axis: 5.22 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 366.5

Radius: 10.5

Gravity: 3.32 G

Time & Orbit

Eccentricity (e): 0.103

Orbit Range: 4.68 AU - 5.76 AU

Year: 7583 Days

Day: 13.5 Hours

Environment

Temp: -224 °C

Axial Tilt: 10.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (19)

Outer Limit: 53,213,567 km

• M1: 130,599 km (0.113 R)
• M2: 473,776 km (0.115 R)
• M3: 1,621,641 km (0.09 R)
• M4: 3,606,356 km (0.074 R)
• M5: 4,159,120 km (0.116 R)
• M6: 6,257,380 km (0.074 R)
• M7: 6,953,459 km (0.112 R)
• M8: 7,848,652 km (0.106 R)
• M9: 8,899,727 km (0.119 R)
• M10: 9,522,802 km (0.076 R)
• M11: 9,910,560 km (0.071 R)
• M12: 11,137,412 km (0.043 R)
• M13: 11,568,104 km (0.116 R)
• M14: 12,159,614 km (0.109 R)
• M15: 14,672,410 km (0.084 R)
• M16: 15,660,803 km (0.08 R)
• M17: 17,835,058 km (0.031 R)
• M18: 27,069,735 km (0.069 R)
• M19: 28,732,964 km (0.051 R)

Planet 8 - Ice Giant

Semi-Major Axis: 10.37 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 207.9

Radius: 7.3

Gravity: 3.9 G

Time & Orbit

Eccentricity (e): 0.24

Orbit Range: 7.88 AU - 12.86 AU

Year: 21233 Days

Day: 19.2 Hours

Environment

Temp: -237 °C

Axial Tilt: 2.8 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (28)

Outer Limit: 53,213,567 km

• M1: 91,255 km (0.083 R)
• M2: 351,705 km (0.025 R)
• M3: 679,922 km (0.103 R)
• M4: 1,079,349 km (0.115 R)
• M5: 2,017,327 km (0.073 R)
• M6: 2,348,986 km (0.116 R)
• M7: 3,832,997 km (0.062 R)
• M8: 4,709,191 km (0.051 R)
• M9: 9,469,994 km (0.063 R)
• M10: 9,825,588 km (0.06 R)
• M11: 10,137,350 km (0.088 R)
• M12: 10,780,621 km (0.075 R)
• M13: 13,374,050 km (0.094 R)
• M14: 14,147,620 km (0.068 R)
• M15: 15,018,878 km (0.065 R)
• M16: 15,502,678 km (0.101 R)
• M17: 23,967,075 km (0.084 R)
• M18: 25,203,501 km (0.099 R)
• M19: 28,954,369 km (0.054 R)
• M20: 29,920,023 km (0.104 R)
• M21: 30,356,101 km (0.095 R)
• M22: 31,129,223 km (0.04 R)
• M23: 31,802,263 km (0.115 R)
• M24: 35,314,073 km (0.103 R)
• M25: 36,416,011 km (0.114 R)
• M26: 47,680,432 km (0.061 R)
• M27: 48,724,625 km (0.093 R)
• M28: 53,054,286 km (0.067 R)

Kuiper Belt

Range: 30 - 55 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 266 - 13,513 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit