🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.46 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.92 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.93

Radius: 0.97

Gravity: 0.99 G

Time & Orbit

Eccentricity (e): 0.071

Orbit Range: 0.85 AU - 0.99 AU

Year: 321 Days

Day: 32.7 Hours

Environment

Temp: 121 °C

Axial Tilt: 2.1 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 2 - Terrestrial

Semi-Major Axis: 1.03 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.87

Radius: 1.52

Gravity: 1.24 G

Time & Orbit

Eccentricity (e): 0.148

Orbit Range: 0.88 AU - 1.18 AU

Year: 380 Days

Day: 22.7 Hours

Environment

Temp: 13 °C

Axial Tilt: 5.9 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Planet 3 - Terrestrial

Semi-Major Axis: 1.72 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.17

Radius: 1.06

Gravity: 1.04 G

Time & Orbit

Eccentricity (e): 0.212

Orbit Range: 1.36 AU - 2.08 AU

Year: 820 Days

Day: 21.5 Hours

Environment

Temp: -52 °C

Axial Tilt: 21.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 90,520,761 km

• M1: 71,657 km (0.101 R)

Planet 4 - Terrestrial

Semi-Major Axis: 2.03 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.95

Radius: 1.9

Gravity: 1.37 G

Time & Orbit

Eccentricity (e): 0.022

Orbit Range: 1.99 AU - 2.07 AU

Year: 1051 Days

Day: 45.1 Hours

Environment

Temp: -60 °C

Axial Tilt: 36.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (2)

Outer Limit: 90,520,761 km

• M1: 1,511,836 km (0.111 R)
• M2: 1,606,831 km (0.077 R)

Planet 5 - Terrestrial

Semi-Major Axis: 3.54 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.05

Radius: 1.75

Gravity: 1.32 G

Time & Orbit

Eccentricity (e): 0.119

Orbit Range: 3.12 AU - 3.96 AU

Year: 2421 Days

Day: 17.3 Hours

Environment

Temp: -124 °C

Axial Tilt: 23.7 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 6 - Gas Giant

Semi-Major Axis: 7.15 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 689.5

Radius: 10.8

Gravity: 5.91 G

Time & Orbit

Eccentricity (e): 0.096

Orbit Range: 6.46 AU - 7.84 AU

Year: 6948 Days

Day: 9.9 Hours

Environment

Temp: -156 °C

Axial Tilt: 76.1 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 90,520,761 km

• M1: 135,386 km (0.095 R)
• M2: 686,505 km (0.036 R)
• M3: 1,040,752 km (0.071 R)
• M4: 1,915,601 km (0.055 R)
• M5: 2,837,722 km (0.097 R)
• M6: 3,488,174 km (0.079 R)
• M7: 5,057,156 km (0.063 R)
• M8: 5,630,415 km (0.1 R)
• M9: 7,537,040 km (0.089 R)
• M10: 9,749,144 km (0.1 R)
• M11: 10,304,601 km (0.111 R)
• M12: 10,930,069 km (0.083 R)
• M13: 11,428,380 km (0.092 R)
• M14: 16,423,901 km (0.057 R)
• M15: 17,613,803 km (0.066 R)
• M16: 21,761,105 km (0.106 R)
• M17: 23,358,511 km (0.069 R)
• M18: 29,470,332 km (0.117 R)
• M19: 30,047,480 km (0.104 R)
• M20: 34,725,256 km (0.101 R)
• M21: 35,911,717 km (0.097 R)
• M22: 36,459,843 km (0.116 R)

Planet 7 - Gas Giant

Semi-Major Axis: 8.41 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 49.5

Radius: 14.2

Gravity: 0.25 G

Time & Orbit

Eccentricity (e): 0.078

Orbit Range: 7.75 AU - 9.07 AU

Year: 8864 Days

Day: 11 Hours

Environment

Temp: -166 °C

Axial Tilt: 22.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (13)

Outer Limit: 90,520,761 km

• M1: 193,280 km (0.061 R)
• M2: 945,608 km (0.115 R)
• M3: 1,471,295 km (0.12 R)
• M4: 2,816,928 km (0.09 R)
• M5: 4,567,373 km (0.092 R)
• M6: 5,713,591 km (0.083 R)
• M7: 6,958,545 km (0.027 R)
• M8: 8,029,217 km (0.109 R)
• M9: 11,421,648 km (0.063 R)
• M10: 11,985,781 km (0.057 R)
• M11: 13,522,451 km (0.092 R)
• M12: 14,338,358 km (0.046 R)
• M13: 15,331,538 km (0.089 R)

Planet 8 - Ice Giant

Semi-Major Axis: 17.4 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 588.6

Radius: 4.6

Gravity: 27.82 G

Time & Orbit

Eccentricity (e): 0.022

Orbit Range: 17.02 AU - 17.78 AU

Year: 26379 Days

Day: 18.3 Hours

Environment

Temp: -188 °C

Axial Tilt: 32.5 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (22)

Outer Limit: 90,520,761 km

• M1: 69,413 km (0.07 R)
• M2: 350,657 km (0.12 R)
• M3: 1,199,925 km (0.114 R)
• M4: 2,134,014 km (0.102 R)
• M5: 2,381,299 km (0.078 R)
• M6: 2,800,622 km (0.088 R)
• M7: 9,914,599 km (0.11 R)
• M8: 10,538,272 km (0.095 R)
• M9: 16,585,617 km (0.059 R)
• M10: 17,552,468 km (0.107 R)
• M11: 20,677,717 km (0.111 R)
• M12: 24,600,771 km (0.089 R)
• M13: 25,394,837 km (0.112 R)
• M14: 27,394,362 km (0.107 R)
• M15: 29,750,529 km (0.104 R)
• M16: 35,430,909 km (0.102 R)
• M17: 37,921,863 km (0.072 R)
• M18: 39,748,753 km (0.095 R)
• M19: 49,232,061 km (0.099 R)
• M20: 56,131,963 km (0.071 R)
• M21: 73,894,616 km (0.076 R)
• M22: 85,185,516 km (0.052 R)

Planet 9 - Ice Giant

Semi-Major Axis: 17.86 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 613.1

Radius: 4.9

Gravity: 25.54 G

Time & Orbit

Eccentricity (e): 0.089

Orbit Range: 16.27 AU - 19.45 AU

Year: 27432 Days

Day: 20.7 Hours

Environment

Temp: -200 °C

Axial Tilt: 26.4 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (23)

Outer Limit: 90,520,761 km

• M1: 66,721 km (0.072 R)
• M2: 225,145 km (0.116 R)
• M3: 1,050,626 km (0.096 R)
• M4: 1,249,890 km (0.113 R)
• M5: 2,089,583 km (0.042 R)
• M6: 6,114,813 km (0.107 R)
• M7: 6,387,231 km (0.096 R)
• M8: 10,253,887 km (0.091 R)
• M9: 11,166,135 km (0.108 R)
• M10: 13,150,700 km (0.097 R)
• M11: 13,990,842 km (0.081 R)
• M12: 16,290,011 km (0.096 R)
• M13: 16,463,246 km (0.096 R)
• M14: 19,502,775 km (0.088 R)
• M15: 22,465,411 km (0.101 R)
• M16: 22,680,084 km (0.071 R)
• M17: 23,222,975 km (0.06 R)
• M18: 30,037,008 km (0.114 R)
• M19: 44,661,098 km (0.098 R)
• M20: 45,857,282 km (0.113 R)
• M21: 54,833,903 km (0.115 R)
• M22: 56,799,320 km (0.099 R)
• M23: 74,478,347 km (0.116 R)

Kuiper Belt

Range: 30.2 - 54.2 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 305 - 15,633 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit