🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.44 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.88 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.33

Radius: 0.64

Gravity: 0.81 G

Time & Orbit

Eccentricity (e): 0.234

Orbit Range: 0.67 AU - 1.09 AU

Year: 303 Days

Day: 29.2 Hours

Environment

Temp: 169 °C

Axial Tilt: 35.4 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Satellites (1)

Outer Limit: 21,808,232 km

• M1: 121,773 km (0.08 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.9 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.5

Radius: 1.18

Gravity: 1.08 G

Time & Orbit

Eccentricity (e): 0.177

Orbit Range: 0.74 AU - 1.06 AU

Year: 313 Days

Day: 46.4 Hours

Environment

Temp: 157 °C

Axial Tilt: 7.2 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Planet 3 - Terrestrial

Semi-Major Axis: 1.32 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.68

Radius: 1.48

Gravity: 1.22 G

Time & Orbit

Eccentricity (e): 0.162

Orbit Range: 1.11 AU - 1.53 AU

Year: 557 Days

Day: 14.6 Hours

Environment

Temp: -17 °C

Axial Tilt: 19.7 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Satellites (2)

Outer Limit: 21,808,232 km

• M1: 36,951 km (0.119 R)
• M2: 90,357 km (0.079 R)

Planet 4 - Terrestrial

Semi-Major Axis: 1.38 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.26

Radius: 1.6

Gravity: 1.27 G

Time & Orbit

Eccentricity (e): 0.168

Orbit Range: 1.15 AU - 1.61 AU

Year: 595 Days

Day: 23.4 Hours

Environment

Temp: -32 °C

Axial Tilt: 10 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 21,808,232 km

• M1: 53,556 km (0.119 R)

Planet 5 - Terrestrial

Semi-Major Axis: 2.1 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.13

Radius: 1.35

Gravity: 1.17 G

Time & Orbit

Eccentricity (e): 0.075

Orbit Range: 1.94 AU - 2.26 AU

Year: 1117 Days

Day: 30.7 Hours

Environment

Temp: -73 °C

Axial Tilt: 28.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 21,808,232 km

• M1: 109,506 km (0.089 R)

Planet 6 - Terrestrial

Semi-Major Axis: 2.93 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.76

Radius: 0.9

Gravity: 0.94 G

Time & Orbit

Eccentricity (e): 0.202

Orbit Range: 2.34 AU - 3.52 AU

Year: 1841 Days

Day: 15 Hours

Environment

Temp: -101 °C

Axial Tilt: 66.5 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Asteroid Belt

Center: 4.23 AU

Composition

Type: Inner (Rocky/Metallic)

A dense region of planetesimals and debris.

Boundary

Planet 7 - Gas Giant

Semi-Major Axis: 5.52 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 750.8

Radius: 13.6

Gravity: 4.06 G

Time & Orbit

Eccentricity (e): 0.167

Orbit Range: 4.6 AU - 6.44 AU

Year: 4761 Days

Day: 13.6 Hours

Environment

Temp: -145 °C

Axial Tilt: 12.9 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (20)

Outer Limit: 21,808,232 km

• M1: 169,494 km (0.097 R)
• M2: 683,662 km (0.069 R)
• M3: 1,169,556 km (0.051 R)
• M4: 1,787,395 km (0.082 R)
• M5: 2,551,392 km (0.112 R)
• M6: 3,566,413 km (0.105 R)
• M7: 4,406,555 km (0.051 R)
• M8: 5,631,013 km (0.06 R)
• M9: 6,738,786 km (0.056 R)
• M10: 8,359,828 km (0.08 R)
• M11: 9,343,285 km (0.082 R)
• M12: 11,777,541 km (0.061 R)
• M13: 13,167,156 km (0.038 R)
• M14: 14,116,504 km (0.115 R)
• M15: 17,178,174 km (0.116 R)
• M16: 19,360,657 km (0.085 R)
• M17: 20,867,856 km (0.106 R)
• M18: 24,426,041 km (0.036 R)
• M19: 25,295,055 km (0.066 R)
• M20: 26,844,590 km (0.102 R)

Planet 8 - Gas Giant

Semi-Major Axis: 10.03 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 359.4

Radius: 13.3

Gravity: 2.03 G

Time & Orbit

Eccentricity (e): 0.027

Orbit Range: 9.76 AU - 10.3 AU

Year: 11661 Days

Day: 6.6 Hours

Environment

Temp: -182 °C

Axial Tilt: 28.3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (27)

Outer Limit: 21,808,232 km

• M1: 165,455 km (0.113 R)
• M2: 691,292 km (0.117 R)
• M3: 1,630,018 km (0.106 R)
• M4: 2,379,504 km (0.068 R)
• M5: 3,020,680 km (0.042 R)
• M6: 5,032,772 km (0.103 R)
• M7: 6,374,365 km (0.116 R)
• M8: 7,302,470 km (0.075 R)
• M9: 7,901,311 km (0.102 R)
• M10: 9,660,133 km (0.077 R)
• M11: 10,382,840 km (0.042 R)
• M12: 10,935,455 km (0.077 R)
• M13: 11,507,667 km (0.063 R)
• M14: 12,209,580 km (0.098 R)
• M15: 14,549,889 km (0.074 R)
• M16: 15,178,798 km (0.107 R)
• M17: 16,762,591 km (0.111 R)
• M18: 18,236,579 km (0.1 R)
• M19: 19,341,060 km (0.115 R)
• M20: 20,724,990 km (0.106 R)
• M21: 21,846,076 km (0.051 R)
• M22: 27,397,055 km (0.103 R)
• M23: 32,422,047 km (0.089 R)
• M24: 34,151,698 km (0.088 R)
• M25: 35,263,509 km (0.031 R)
• M26: 36,976,255 km (0.089 R)
• M27: 42,066,323 km (0.095 R)

Planet 9 - Gas Giant

Semi-Major Axis: 10.68 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 39.3

Radius: 11.1

Gravity: 0.32 G

Time & Orbit

Eccentricity (e): 0.171

Orbit Range: 8.85 AU - 12.51 AU

Year: 12812 Days

Day: 7.7 Hours

Environment

Temp: -173 °C

Axial Tilt: 0.2 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (12)

Outer Limit: 21,808,232 km

• M1: 138,079 km (0.063 R)
• M2: 583,880 km (0.078 R)
• M3: 982,260 km (0.061 R)
• M4: 1,686,866 km (0.074 R)
• M5: 2,460,436 km (0.035 R)
• M6: 4,432,136 km (0.057 R)
• M7: 5,582,394 km (0.035 R)
• M8: 9,575,760 km (0.106 R)
• M9: 9,954,242 km (0.119 R)
• M10: 11,484,629 km (0.113 R)
• M11: 13,873,407 km (0.098 R)
• M12: 16,957,367 km (0.107 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: 213 - 14,755 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit