🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.41 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.82 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.81

Radius: 1.71

Gravity: 1.3 G

Time & Orbit

Eccentricity (e): 0.242

Orbit Range: 0.62 AU - 1.02 AU

Year: 273 Days

Day: 20.4 Hours

Environment

Temp: 97 °C

Axial Tilt: 18.7 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Satellites (2)

Outer Limit: 105,642,961 km

• M1: 71,957 km (0.112 R)
• M2: 200,611 km (0.118 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.89 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.31

Radius: 1.61

Gravity: 1.28 G

Time & Orbit

Eccentricity (e): 0.112

Orbit Range: 0.79 AU - 0.99 AU

Year: 308 Days

Day: 26.1 Hours

Environment

Temp: 152 °C

Axial Tilt: 13.5 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 3 - Terrestrial

Semi-Major Axis: 1.34 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.51

Radius: 1.83

Gravity: 1.35 G

Time & Orbit

Eccentricity (e): 0.02

Orbit Range: 1.31 AU - 1.37 AU

Year: 569 Days

Day: 44.7 Hours

Environment

Temp: -5 °C

Axial Tilt: 26.3 °

Atmosphere: N₂, O₂

Biome: Oceanic/Continental

Planet 4 - Terrestrial

Semi-Major Axis: 1.93 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.26

Radius: 1.1

Gravity: 1.04 G

Time & Orbit

Eccentricity (e): 0.149

Orbit Range: 1.64 AU - 2.22 AU

Year: 984 Days

Day: 44.9 Hours

Environment

Temp: -55 °C

Axial Tilt: 31.2 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 5 - Terrestrial

Semi-Major Axis: 4.19 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.59

Radius: 1.46

Gravity: 1.22 G

Time & Orbit

Eccentricity (e): 0.134

Orbit Range: 3.63 AU - 4.75 AU

Year: 3148 Days

Day: 29.7 Hours

Environment

Temp: -135 °C

Axial Tilt: 5.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Planet 6 - Gas Giant

Semi-Major Axis: 7.89 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 977

Radius: 8.5

Gravity: 13.52 G

Time & Orbit

Eccentricity (e): 0.227

Orbit Range: 6.1 AU - 9.68 AU

Year: 8136 Days

Day: 12.2 Hours

Environment

Temp: -161 °C

Axial Tilt: 18.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (33)

Outer Limit: 105,642,961 km

• M1: 124,017 km (0.097 R)
• M2: 432,637 km (0.036 R)
• M3: 902,075 km (0.064 R)
• M4: 1,169,107 km (0.034 R)
• M5: 1,614,460 km (0.069 R)
• M6: 2,387,133 km (0.117 R)
• M7: 2,803,913 km (0.11 R)
• M8: 3,631,488 km (0.038 R)
• M9: 5,007,789 km (0.099 R)
• M10: 5,294,119 km (0.088 R)
• M11: 5,591,520 km (0.101 R)
• M12: 6,778,878 km (0.097 R)
• M13: 8,703,006 km (0.097 R)
• M14: 9,306,932 km (0.092 R)
• M15: 12,061,628 km (0.048 R)
• M16: 12,989,882 km (0.111 R)
• M17: 13,289,527 km (0.104 R)
• M18: 14,534,480 km (0.088 R)
• M19: 16,128,894 km (0.089 R)
• M20: 17,471,236 km (0.08 R)
• M21: 17,763,102 km (0.045 R)
• M22: 21,274,762 km (0.118 R)
• M23: 25,690,592 km (0.052 R)
• M24: 26,163,172 km (0.107 R)
• M25: 28,816,140 km (0.109 R)
• M26: 29,842,531 km (0.112 R)
• M27: 30,155,191 km (0.095 R)
• M28: 32,077,224 km (0.099 R)
• M29: 35,576,468 km (0.095 R)
• M30: 35,928,173 km (0.071 R)
• M31: 39,073,019 km (0.061 R)
• M32: 39,572,526 km (0.068 R)
• M33: 43,992,395 km (0.092 R)

Planet 7 - Gas Giant

Semi-Major Axis: 11 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 652.4

Radius: 8.3

Gravity: 9.47 G

Time & Orbit

Eccentricity (e): 0.22

Orbit Range: 8.58 AU - 13.42 AU

Year: 13393 Days

Day: 7.7 Hours

Environment

Temp: -187 °C

Axial Tilt: 170.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (28)

Outer Limit: 105,642,961 km

• M1: 103,223 km (0.093 R)
• M2: 420,370 km (0.096 R)
• M3: 695,780 km (0.06 R)
• M4: 1,204,113 km (0.119 R)
• M5: 1,512,584 km (0.114 R)
• M6: 1,823,748 km (0.12 R)
• M7: 2,103,196 km (0.05 R)
• M8: 2,727,468 km (0.111 R)
• M9: 3,444,042 km (0.052 R)
• M10: 5,143,474 km (0.098 R)
• M11: 7,295,739 km (0.115 R)
• M12: 7,735,108 km (0.081 R)
• M13: 10,309,986 km (0.114 R)
• M14: 10,976,744 km (0.1 R)
• M15: 14,817,370 km (0.037 R)
• M16: 16,923,409 km (0.109 R)
• M17: 30,952,099 km (0.091 R)
• M18: 37,507,777 km (0.106 R)
• M19: 39,748,902 km (0.117 R)
• M20: 43,346,731 km (0.113 R)
• M21: 44,641,052 km (0.076 R)
• M22: 45,518,144 km (0.068 R)
• M23: 47,609,373 km (0.075 R)
• M24: 50,548,672 km (0.032 R)
• M25: 51,821,600 km (0.084 R)
• M26: 53,606,751 km (0.07 R)
• M27: 54,265,880 km (0.081 R)
• M28: 57,299,276 km (0.105 R)

Planet 8 - Ice Giant

Semi-Major Axis: 13.57 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 312.8

Radius: 7.7

Gravity: 5.28 G

Time & Orbit

Eccentricity (e): 0.152

Orbit Range: 11.51 AU - 15.63 AU

Year: 18350 Days

Day: 23.3 Hours

Environment

Temp: -180 °C

Axial Tilt: 35.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 105,642,961 km

• M1: 95,892 km (0.107 R)
• M2: 353,051 km (0.117 R)
• M3: 1,347,578 km (0.096 R)
• M4: 4,673,288 km (0.036 R)
• M5: 5,028,583 km (0.055 R)
• M6: 7,082,562 km (0.098 R)
• M7: 11,847,254 km (0.031 R)
• M8: 12,879,928 km (0.088 R)
• M9: 13,386,167 km (0.074 R)
• M10: 15,758,341 km (0.089 R)
• M11: 19,448,172 km (0.08 R)
• M12: 19,862,857 km (0.101 R)
• M13: 21,935,985 km (0.118 R)
• M14: 42,822,091 km (0.098 R)
• M15: 45,675,970 km (0.093 R)
• M16: 46,114,740 km (0.069 R)
• M17: 53,198,798 km (0.081 R)
• M18: 53,684,542 km (0.098 R)

Planet 9 - Ice Giant

Semi-Major Axis: 18.62 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 843

Radius: 6.9

Gravity: 17.71 G

Time & Orbit

Eccentricity (e): 0.042

Orbit Range: 17.84 AU - 19.4 AU

Year: 29495 Days

Day: 18.7 Hours

Environment

Temp: -200 °C

Axial Tilt: 35.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (35)

Outer Limit: 105,642,961 km

• M1: 85,869 km (0.109 R)
• M2: 421,118 km (0.08 R)
• M3: 809,773 km (0.116 R)
• M4: 1,209,798 km (0.11 R)
• M5: 1,438,234 km (0.091 R)
• M6: 2,555,132 km (0.109 R)
• M7: 2,823,361 km (0.108 R)
• M8: 3,200,198 km (0.085 R)
• M9: 3,448,381 km (0.086 R)
• M10: 5,432,647 km (0.076 R)
• M11: 5,652,256 km (0.052 R)
• M12: 6,395,608 km (0.108 R)
• M13: 7,630,389 km (0.025 R)
• M14: 9,513,677 km (0.109 R)
• M15: 10,905,685 km (0.055 R)
• M16: 12,277,796 km (0.109 R)
• M17: 12,734,070 km (0.079 R)
• M18: 14,927,923 km (0.089 R)
• M19: 31,550,041 km (0.09 R)
• M20: 31,975,797 km (0.096 R)
• M21: 34,913,301 km (0.052 R)
• M22: 36,291,845 km (0.112 R)
• M23: 38,025,684 km (0.117 R)
• M24: 39,649,270 km (0.104 R)
• M25: 41,149,288 km (0.063 R)
• M26: 43,557,514 km (0.103 R)
• M27: 44,974,954 km (0.115 R)
• M28: 48,088,684 km (0.107 R)
• M29: 48,652,668 km (0.085 R)
• M30: 50,564,529 km (0.072 R)
• M31: 67,695,580 km (0.048 R)
• M32: 71,043,580 km (0.1 R)
• M33: 86,368,236 km (0.096 R)
• M34: 93,476,080 km (0.11 R)
• M35: 97,621,736 km (0.069 R)

Kuiper Belt

Range: 30 - 51 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 249 - 17,166 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit