🌌 Stone's Star System Generator

Asteroid Belt

Center: 0.39 AU

Composition

Type: Inner System (Rocky)

A dense region of planetesimals and debris.

Boundary

Planet 1 - Terrestrial

Semi-Major Axis: 0.77 AU

Status: Inner (Hot)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 1.54

Radius: 1.19

Gravity: 1.09 G

Time & Orbit

Eccentricity (e): 0.174

Orbit Range: 0.64 AU - 0.9 AU

Year: 257 Days

Day: 19.5 Hours

Environment

Temp: 80 °C

Axial Tilt: 47 °

Atmosphere: Dense CO₂

Biome: Volcanic/Barren

Satellites (1)

Outer Limit: 78,614,634 km

• M1: 27,676 km (0.113 R)

Planet 2 - Terrestrial

Semi-Major Axis: 0.93 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 4.75

Radius: 1.86

Gravity: 1.37 G

Time & Orbit

Eccentricity (e): 0.008

Orbit Range: 0.92 AU - 0.94 AU

Year: 342 Days

Day: 46.8 Hours

Environment

Temp: 34 °C

Axial Tilt: 6.9 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Planet 3 - Terrestrial

Semi-Major Axis: 1.09 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.98

Radius: 1.74

Gravity: 1.31 G

Time & Orbit

Eccentricity (e): 0.081

Orbit Range: 1 AU - 1.18 AU

Year: 433 Days

Day: 13.8 Hours

Environment

Temp: -5 °C

Axial Tilt: 7.2 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Satellites (2)

Outer Limit: 78,614,634 km

• M1: 41,887 km (0.044 R)
• M2: 276,158 km (0.067 R)

Planet 4 - Terrestrial

Semi-Major Axis: 1.19 AU

Status: HZ

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 3.66

Radius: 1.68

Gravity: 1.3 G

Time & Orbit

Eccentricity (e): 0.25

Orbit Range: 0.89 AU - 1.49 AU

Year: 494 Days

Day: 23.5 Hours

Environment

Temp: 1 °C

Axial Tilt: 73.5 °

Atmosphere: N₂, O₂

Biome: Arid/Tundra

Satellites (2)

Outer Limit: 78,614,634 km

• M1: 43,383 km (0.097 R)
• M2: 464,801 km (0.091 R)

Planet 5 - Terrestrial

Semi-Major Axis: 3 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 0.11

Radius: 0.41

Gravity: 0.65 G

Time & Orbit

Eccentricity (e): 0.133

Orbit Range: 2.6 AU - 3.4 AU

Year: 1979 Days

Day: 44.8 Hours

Environment

Temp: -121 °C

Axial Tilt: 23.6 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Satellites (1)

Outer Limit: 78,614,634 km

• M1: 798,404 km (0.068 R)

Planet 6 - Terrestrial

Semi-Major Axis: 3.49 AU

Status: Outer (Cold)

Composition: Rocky (Silicates/Metals)

Physical Data

Mass: 2.84

Radius: 1.52

Gravity: 1.23 G

Time & Orbit

Eccentricity (e): 0.122

Orbit Range: 3.06 AU - 3.92 AU

Year: 2483 Days

Day: 39.9 Hours

Environment

Temp: -123 °C

Axial Tilt: 1.1 °

Atmosphere: Thin N₂/CH₄

Biome: Ice Cap/Desert

Asteroid Belt

Center: 4.21 AU

Composition

Type: Main (Rocky/Icy Mix)

A dense region of planetesimals and debris.

Boundary

Planet 7 - Gas Giant

Semi-Major Axis: 4.92 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 206.9

Radius: 8.1

Gravity: 3.15 G

Time & Orbit

Eccentricity (e): 0.119

Orbit Range: 4.33 AU - 5.51 AU

Year: 4156 Days

Day: 5.3 Hours

Environment

Temp: -154 °C

Axial Tilt: 13.7 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (18)

Outer Limit: 78,614,634 km

• M1: 100,679 km (0.085 R)
• M2: 362,625 km (0.089 R)
• M3: 782,397 km (0.116 R)
• M4: 2,326,845 km (0.102 R)
• M5: 3,433,720 km (0.038 R)
• M6: 3,852,145 km (0.106 R)
• M7: 5,409,160 km (0.047 R)
• M8: 5,749,944 km (0.1 R)
• M9: 6,105,089 km (0.084 R)
• M10: 7,288,109 km (0.087 R)
• M11: 8,682,660 km (0.058 R)
• M12: 9,741,514 km (0.047 R)
• M13: 11,114,972 km (0.029 R)
• M14: 11,467,724 km (0.033 R)
• M15: 12,319,983 km (0.08 R)
• M16: 13,432,692 km (0.114 R)
• M17: 14,611,074 km (0.104 R)
• M18: 17,485,598 km (0.082 R)

Planet 8 - Gas Giant

Semi-Major Axis: 7.77 AU

Status: Outer (Cold)

Composition: Hydrogen/Helium Atmosphere

Physical Data

Mass: 763.3

Radius: 14.7

Gravity: 3.53 G

Time & Orbit

Eccentricity (e): 0.071

Orbit Range: 7.22 AU - 8.32 AU

Year: 8248 Days

Day: 6.9 Hours

Environment

Temp: -176 °C

Axial Tilt: 12.6 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (28)

Outer Limit: 78,614,634 km

• M1: 184,155 km (0.072 R)
• M2: 762,201 km (0.11 R)
• M3: 1,704,518 km (0.053 R)
• M4: 2,196,396 km (0.045 R)
• M5: 3,248,667 km (0.104 R)
• M6: 4,175,127 km (0.119 R)
• M7: 4,701,263 km (0.093 R)
• M8: 5,655,697 km (0.096 R)
• M9: 7,703,692 km (0.056 R)
• M10: 8,718,265 km (0.076 R)
• M11: 9,820,352 km (0.094 R)
• M12: 14,171,257 km (0.085 R)
• M13: 16,090,897 km (0.025 R)
• M14: 16,974,422 km (0.066 R)
• M15: 17,961,917 km (0.078 R)
• M16: 18,616,857 km (0.089 R)
• M17: 21,235,567 km (0.093 R)
• M18: 22,215,882 km (0.073 R)
• M19: 22,801,558 km (0.099 R)
• M20: 23,916,511 km (0.065 R)
• M21: 25,067,666 km (0.103 R)
• M22: 33,304,525 km (0.082 R)
• M23: 35,189,309 km (0.073 R)
• M24: 37,970,034 km (0.108 R)
• M25: 40,396,811 km (0.083 R)
• M26: 40,894,224 km (0.056 R)
• M27: 42,539,351 km (0.11 R)
• M28: 43,183,669 km (0.108 R)

Planet 9 - Ice Giant

Semi-Major Axis: 13.93 AU

Status: Outer (Cold)

Composition: Methane/Ammonia Ices

Physical Data

Mass: 771

Radius: 5.2

Gravity: 28.51 G

Time & Orbit

Eccentricity (e): 0.088

Orbit Range: 12.7 AU - 15.16 AU

Year: 19798 Days

Day: 23.6 Hours

Environment

Temp: -195 °C

Axial Tilt: 3 °

Atmosphere: H₂, CH₄

Biome: None

Satellites (33)

Outer Limit: 78,614,634 km

• M1: 64,626 km (0.091 R)
• M2: 553,961 km (0.104 R)
• M3: 813,064 km (0.055 R)
• M4: 1,628,074 km (0.085 R)
• M5: 1,882,988 km (0.081 R)
• M6: 2,687,227 km (0.094 R)
• M7: 2,965,179 km (0.101 R)
• M8: 3,318,380 km (0.087 R)
• M9: 3,608,749 km (0.055 R)
• M10: 3,853,043 km (0.052 R)
• M11: 4,075,794 km (0.078 R)
• M12: 4,340,881 km (0.101 R)
• M13: 6,441,535 km (0.059 R)
• M14: 7,415,118 km (0.105 R)
• M15: 9,942,424 km (0.086 R)
• M16: 12,780,296 km (0.074 R)
• M17: 14,082,246 km (0.085 R)
• M18: 14,919,994 km (0.092 R)
• M19: 16,279,390 km (0.112 R)
• M20: 18,694,947 km (0.09 R)
• M21: 21,537,007 km (0.064 R)
• M22: 22,340,946 km (0.114 R)
• M23: 32,283,669 km (0.105 R)
• M24: 34,819,204 km (0.074 R)
• M25: 36,065,204 km (0.113 R)
• M26: 36,912,227 km (0.081 R)
• M27: 39,831,480 km (0.108 R)
• M28: 45,630,941 km (0.068 R)
• M29: 48,816,777 km (0.064 R)
• M30: 56,378,501 km (0.084 R)
• M31: 66,775,403 km (0.1 R)
• M32: 69,777,982 km (0.067 R)
• M33: 77,442,330 km (0.104 R)

Kuiper Belt

Range: 30 - 47 AU

Composition

Type: Dwarf Planets/TNOs (Ices)

Reservoir of dwarf planets and volatile ices.

Outer System

Oort Cloud

Range: 365 - 20,346 AU

Composition

Type: Cometary Reservoir

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

Gravitational Limit